Fix BSC RPC exceed maximum block range

This merge contains the following set of changes:
  * [Improvement] Add /metrics endpoint for prometheus support (#512)
  * [Improvement] Add monitor script for detecting failed AMB messages (#513)
  * [Improvement] Improve performance of BS requests in ALM (#516)
  * [Fix] Add pretty error messages for manual execution transaction reverts (#511)
  * [Fix] Fix resend of stuck pending transactions (#514)

.github/workflows/main.yml

@@ -182,6 +182,7 @@ jobs:
   deployment:
     runs-on: ubuntu-latest
     needs:
+      - build-e2e-images
       - build-molecule-runner
     strategy:
       fail-fast: false
@@ -197,11 +198,11 @@ jobs:
         run: docker login ${DOCKER_REGISTRY} -u ${{ github.actor }} -p ${{ github.token }}
       - run: deployment-e2e/molecule.sh ${{ matrix.task }}
   ultimate:
+    if: github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/tags') || contains(github.event.head_commit.message, 'ultimate')
     runs-on: ubuntu-latest
     needs:
       - initialize
       - build-e2e-images
-    if: github.ref == 'refs/heads/master' || github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/tags')
     strategy:
       fail-fast: false
       matrix:
@@ -209,12 +210,16 @@ jobs:
         include:
           - task: erc-to-erc
             ui-e2e-grep: 'ERC TO ERC'
+            ui-config: 'e2e-commons/components-envs/ui-erc20.env'
           - task: erc-to-native
             ui-e2e-grep: 'ERC TO NATIVE'
+            ui-config: 'e2e-commons/components-envs/ui-erc20-native.env'
           - task: native-to-erc
             ui-e2e-grep: 'NATIVE TO ERC'
+            ui-config: 'e2e-commons/components-envs/ui.env'
           - task: amb-stake-erc-to-erc
             ui-e2e-grep: 'AMB-STAKE-ERC-TO-ERC'
+            ui-config: 'e2e-commons/components-envs/ui-amb-stake-erc20-erc20.env'
     steps:
       - uses: actions/checkout@v2
         with:
@@ -240,7 +245,20 @@ jobs:
       - name: Deploy contracts
         run: ${{ steps.cache-repo.outputs.cache-hit }} && e2e-commons/up.sh deploy blocks
       - name: Pull e2e oracle image
-        run: docker-compose -f ./e2e-commons/docker-compose.yml pull oracle
+        run: |
+         docker-compose -f ./e2e-commons/docker-compose.yml pull oracle
+         docker tag ${DOCKER_IMAGE_BASE}/tokenbridge-e2e-oracle:${ORACLE_TAG} poanetwork/tokenbridge-oracle:latest
+      - if: ${{ matrix.ui-e2e-grep }}
+        name: Pull e2e ui image
+        run: |
+          docker-compose -f ./e2e-commons/docker-compose.yml pull ui
+          docker build \
+            --build-arg DOCKER_IMAGE_BASE=${DOCKER_IMAGE_BASE} \
+            --build-arg UI_TAG=${UI_TAG} \
+            --build-arg DOT_ENV_PATH=${{ matrix.ui-config }} \
+            -f ./e2e-commons/Dockerfile.ui \
+            -t ui_ui:latest \
+            .
       - name: Deploy oracle and ui
         run: deployment-e2e/molecule.sh ultimate-${{ matrix.task }}
       - name: Reset docker socket permissions

.gitignore

@@ -49,3 +49,6 @@ monitor/responses/*
 monitor/cache/*
 !monitor/cache/.gitkeep
 !monitor/.gitkeep
+
+# Local Netlify folder
+.netlify

CONFIGURATION.md

@@ -42,6 +42,8 @@ ORACLE_HOME_TO_FOREIGN_BLOCK_LIST | Filename with a list of addresses, separated
 ORACLE_HOME_TO_FOREIGN_CHECK_SENDER | If set to `true`, instructs the oracle to do an extra check for transaction origin in the block/allowance list. `false` by default. | `true` / `false`
 ORACLE_ALWAYS_RELAY_SIGNATURES | If set to `true`, the oracle will always relay signatures even if it was not the last who finilized the signatures collecting process. The default is `false`. | `true` / `false`
 ORACLE_RPC_REQUEST_TIMEOUT | Timeout in milliseconds for a single RPC request. Default value is `ORACLE_*_RPC_POLLING_INTERVAL * 2`. | integer
+ORACLE_HOME_TX_RESEND_INTERVAL | Interval in milliseconds for automatic resending of stuck transactions for Home sender service. Defaults to 20 minutes. | integer  
+ORACLE_FOREIGN_TX_RESEND_INTERVAL | Interval in milliseconds for automatic resending of stuck transactions for Foreign sender service. Defaults to 20 minutes. | integer  
 
 
 ## UI configuration
@@ -82,3 +84,7 @@ MONITOR_CACHE_EVENTS | If set to true, monitor will cache obtained events for ot
 MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST | File with a list of addresses, separated by newlines. If set, determines the privileged set of accounts whose requests should be automatically processed by the CollectedSignatures watcher. | string
 MONITOR_HOME_TO_FOREIGN_BLOCK_LIST | File with a list of addresses, separated by newlines. If set, determines the set of accounts whose requests should be marked as unclaimed. Has a lower priority than the `MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST`. | string
 MONITOR_HOME_TO_FOREIGN_CHECK_SENDER | If set to `true`, instructs the oracle to do an extra check for transaction origin in the block/allowance list. `false` by default. | `true` / `false`
+MONITOR_HOME_VALIDATORS_BALANCE_ENABLE | If set, defines the list of home validator addresses for which balance should be checked. | `string`
+MONITOR_FOREIGN_VALIDATORS_BALANCE_ENABLE | If set, defines the list of foreign validator addresses for which balance should be checked. | `string`
+MONITOR_HOME_EXPLORER_API | The HTTPS URL of the Home network explorer API. If set, may be used as a fallback in case of the RPC node failure. | URL
+MONITOR_FOREIGN_EXPLORER_API | The HTTPS URL of the Foreign network explorer API. If set, may be used as a fallback in case of the RPC node failure. | URL

alm/Dockerfile

@@ -19,7 +19,7 @@ COPY --from=contracts /mono/contracts/build ./contracts/build
 COPY commons/package.json ./commons/
 COPY alm/package.json ./alm/
 COPY yarn.lock .
-RUN NOYARNPOSTINSTALL=1 yarn install --frozen-lockfile --production
+RUN NOYARNPOSTINSTALL=1 yarn install --frozen-lockfile
 
 COPY ./commons ./commons
 COPY ./alm ./alm

alm/package.json

@@ -3,6 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
+    "@ethersproject/bignumber": ">=5.0.0-beta.130",
     "@react-hook/window-size": "^3.0.6",
     "@testing-library/jest-dom": "^4.2.4",
     "@testing-library/react": "^9.3.2",
@@ -15,6 +16,8 @@
     "@types/react-router-dom": "^5.1.5",
     "@types/styled-components": "^5.1.0",
     "@use-it/interval": "^0.1.3",
+    "@web3-react/core": "^6.1.1",
+    "@web3-react/injected-connector": "^6.0.7",
     "customize-cra": "^1.0.0",
     "date-fns": "^2.14.0",
     "dotenv": "^8.2.0",
@@ -27,8 +30,9 @@
     "react-scripts": "3.0.1",
     "styled-components": "^5.1.1",
     "typescript": "^3.5.2",
-    "web3": "1.2.7",
-    "web3-eth-contract": "1.2.7"
+    "web3": "1.2.11",
+    "web3-eth-contract": "1.2.11",
+    "web3-utils": "1.2.11"
   },
   "scripts": {
     "start": "yarn createSnapshots && ./load-env.sh react-app-rewired start",
@@ -54,6 +58,7 @@
     ]
   },
   "devDependencies": {
-    "eslint-plugin-prettier": "^3.1.3"
+    "eslint-plugin-prettier": "^3.1.3",
+    "node-fetch": "^2.6.1"
   }
 }

alm/public/_redirects

@@ -0,0 +1 @@
+/*  /index.html  200

alm/scripts/createSnapshots.js

@@ -3,6 +3,8 @@ const { BRIDGE_VALIDATORS_ABI, HOME_AMB_ABI } = require('commons')
 const path = require('path')
 require('dotenv').config()
 const Web3 = require('web3')
+const fetch = require('node-fetch')
+const { URL } = require('url')
 
 const fs = require('fs')
 
@@ -10,7 +12,9 @@ const {
   COMMON_HOME_RPC_URL,
   COMMON_HOME_BRIDGE_ADDRESS,
   COMMON_FOREIGN_RPC_URL,
-  COMMON_FOREIGN_BRIDGE_ADDRESS
+  COMMON_FOREIGN_BRIDGE_ADDRESS,
+  ALM_FOREIGN_EXPLORER_API,
+  ALM_HOME_EXPLORER_API
 } = process.env
 
 const generateSnapshot = async (side, url, bridgeAddress) => {
@@ -19,6 +23,31 @@ const generateSnapshot = async (side, url, bridgeAddress) => {
   const snapshot = {}
 
   const web3 = new Web3(new Web3.providers.HttpProvider(url))
+  const api = side === 'home' ? ALM_HOME_EXPLORER_API : ALM_FOREIGN_EXPLORER_API
+
+  const getPastEventsWithFallback = (contract, eventName, options) =>
+    contract.getPastEvents(eventName, options).catch(async e => {
+      if (e.message.includes('exceed maximum block range')) {
+        const abi = contract.options.jsonInterface.find(abi => abi.type === 'event' && abi.name === eventName)
+
+        const url = new URL(api)
+        url.searchParams.append('module', 'logs')
+        url.searchParams.append('action', 'getLogs')
+        url.searchParams.append('address', contract.options.address)
+        url.searchParams.append('fromBlock', options.fromBlock)
+        url.searchParams.append('toBlock', options.toBlock || 'latest')
+        url.searchParams.append('topic0', web3.eth.abi.encodeEventSignature(abi))
+
+        const logs = await fetch(url).then(res => res.json())
+
+        return logs.result.map(log => ({
+          transactionHash: log.transactionHash,
+          blockNumber: parseInt(log.blockNumber.slice(2), 16),
+          returnValues: web3.eth.abi.decodeLog(abi.inputs, log.data, log.topics.slice(1))
+        }))
+      }
+      throw e
+    })
 
   const currentBlockNumber = await web3.eth.getBlockNumber()
   snapshot.snapshotBlockNumber = currentBlockNumber
@@ -29,10 +58,14 @@ const generateSnapshot = async (side, url, bridgeAddress) => {
   const bridgeContract = new web3.eth.Contract(HOME_AMB_ABI, bridgeAddress)
 
   // Save RequiredBlockConfirmationChanged events
-  let requiredBlockConfirmationChangedEvents = await bridgeContract.getPastEvents('RequiredBlockConfirmationChanged', {
-    fromBlock: 0,
-    toBlock: currentBlockNumber
-  })
+  let requiredBlockConfirmationChangedEvents = await getPastEventsWithFallback(
+    bridgeContract,
+    'RequiredBlockConfirmationChanged',
+    {
+      fromBlock: 0,
+      toBlock: currentBlockNumber
+    }
+  )
 
   // In case RequiredBlockConfirmationChanged was not emitted during initialization in early versions of AMB
   // manually generate an event for this. Example Sokol - Kovan bridge
@@ -59,10 +92,14 @@ const generateSnapshot = async (side, url, bridgeAddress) => {
   const validatorContract = new web3.eth.Contract(BRIDGE_VALIDATORS_ABI, validatorAddress)
 
   // Save RequiredSignaturesChanged events
-  const RequiredSignaturesChangedEvents = await validatorContract.getPastEvents('RequiredSignaturesChanged', {
-    fromBlock: 0,
-    toBlock: currentBlockNumber
-  })
+  const RequiredSignaturesChangedEvents = await getPastEventsWithFallback(
+    validatorContract,
+    'RequiredSignaturesChanged',
+    {
+      fromBlock: 0,
+      toBlock: currentBlockNumber
+    }
+  )
   snapshot.RequiredSignaturesChanged = RequiredSignaturesChangedEvents.map(e => ({
     blockNumber: e.blockNumber,
     returnValues: {
@@ -71,7 +108,7 @@ const generateSnapshot = async (side, url, bridgeAddress) => {
   }))
 
   // Save ValidatorAdded events
-  const validatorAddedEvents = await validatorContract.getPastEvents('ValidatorAdded', {
+  const validatorAddedEvents = await getPastEventsWithFallback(validatorContract, 'ValidatorAdded', {
     fromBlock: 0,
     toBlock: currentBlockNumber
   })
@@ -85,7 +122,7 @@ const generateSnapshot = async (side, url, bridgeAddress) => {
   }))
 
   // Save ValidatorRemoved events
-  const validatorRemovedEvents = await validatorContract.getPastEvents('ValidatorRemoved', {
+  const validatorRemovedEvents = await getPastEventsWithFallback(validatorContract, 'ValidatorRemoved', {
     fromBlock: 0,
     toBlock: currentBlockNumber
   })

alm/src/App.tsx

@@ -1,14 +1,18 @@
 import React from 'react'
 import { BrowserRouter } from 'react-router-dom'
+import { Web3ReactProvider } from '@web3-react/core'
+import Web3 from 'web3'
 import { MainPage } from './components/MainPage'
 import { StateProvider } from './state/StateProvider'
 
 function App() {
   return (
     <BrowserRouter>
-      <StateProvider>
-        <MainPage />
-      </StateProvider>
+      <Web3ReactProvider getLibrary={provider => new Web3(provider)}>
+        <StateProvider>
+          <MainPage />
+        </StateProvider>
+      </Web3ReactProvider>
     </BrowserRouter>
   )
 }

alm/src/components/ConfirmationsContainer.tsx

@@ -39,21 +39,38 @@ export interface ConfirmationsContainerParams {
   message: MessageObject
   receipt: Maybe<TransactionReceipt>
   fromHome: boolean
-  timestamp: number
+  homeStartBlock: Maybe<number>
+  foreignStartBlock: Maybe<number>
 }
 
-export const ConfirmationsContainer = ({ message, receipt, fromHome, timestamp }: ConfirmationsContainerParams) => {
+export const ConfirmationsContainer = ({
+  message,
+  receipt,
+  fromHome,
+  homeStartBlock,
+  foreignStartBlock
+}: ConfirmationsContainerParams) => {
   const {
     home: { name: homeName },
     foreign: { name: foreignName }
   } = useStateProvider()
   const { requiredSignatures, validatorList } = useValidatorContract({ fromHome, receipt })
   const { blockConfirmations } = useBlockConfirmations({ fromHome, receipt })
-  const { confirmations, status, executionData, signatureCollected, waitingBlocksResolved } = useMessageConfirmations({
+  const {
+    confirmations,
+    status,
+    executionData,
+    signatureCollected,
+    waitingBlocksResolved,
+    setExecutionData,
+    executionEventsFetched,
+    setPendingExecution
+  } = useMessageConfirmations({
     message,
     receipt,
     fromHome,
-    timestamp,
+    homeStartBlock,
+    foreignStartBlock,
     requiredSignatures,
     validatorList,
     blockConfirmations
@@ -102,7 +119,17 @@ export const ConfirmationsContainer = ({ message, receipt, fromHome, timestamp }
           validatorList={validatorList}
           waitingBlocksResolved={waitingBlocksResolved}
         />
-        {signatureCollected && <ExecutionConfirmation executionData={executionData} isHome={!fromHome} />}
+        {signatureCollected && (
+          <ExecutionConfirmation
+            messageData={message.data}
+            executionData={executionData}
+            isHome={!fromHome}
+            signatureCollected={signatureCollected}
+            setExecutionData={setExecutionData}
+            executionEventsFetched={executionEventsFetched}
+            setPendingExecution={setPendingExecution}
+          />
+        )}
       </StyledConfirmationContainer>
     </div>
   )

alm/src/components/ExecutionConfirmation.tsx

@@ -1,24 +1,47 @@
 import React from 'react'
 import { formatTimestamp, formatTxHash, getExplorerTxUrl } from '../utils/networks'
 import { useWindowWidth } from '@react-hook/window-size'
-import { SEARCHING_TX, VALIDATOR_CONFIRMATION_STATUS } from '../config/constants'
+import { SEARCHING_TX, VALIDATOR_CONFIRMATION_STATUS, ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION } from '../config/constants'
 import { SimpleLoading } from './commons/Loading'
 import styled from 'styled-components'
 import { ExecutionData } from '../hooks/useMessageConfirmations'
 import { GreyLabel, RedLabel, SuccessLabel } from './commons/Labels'
 import { ExplorerTxLink } from './commons/ExplorerTxLink'
 import { Thead, AgeTd, StatusTd } from './commons/Table'
+import { ManualExecutionButton } from './ManualExecutionButton'
 
 const StyledExecutionConfirmation = styled.div`
   margin-top: 30px;
 `
 
 export interface ExecutionConfirmationParams {
+  messageData: string
   executionData: ExecutionData
+  setExecutionData: Function
+  signatureCollected: boolean | string[]
   isHome: boolean
+  executionEventsFetched: boolean
+  setPendingExecution: Function
 }
 
-export const ExecutionConfirmation = ({ executionData, isHome }: ExecutionConfirmationParams) => {
+export const ExecutionConfirmation = ({
+  messageData,
+  executionData,
+  setExecutionData,
+  signatureCollected,
+  isHome,
+  executionEventsFetched,
+  setPendingExecution
+}: ExecutionConfirmationParams) => {
+  const availableManualExecution =
+    !isHome &&
+    (executionData.status === VALIDATOR_CONFIRMATION_STATUS.WAITING ||
+      executionData.status === VALIDATOR_CONFIRMATION_STATUS.FAILED ||
+      (executionData.status === VALIDATOR_CONFIRMATION_STATUS.UNDEFINED &&
+        executionEventsFetched &&
+        !!executionData.validator))
+  const requiredManualExecution = availableManualExecution && ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION
+  const showAgeColumn = !requiredManualExecution || executionData.status === VALIDATOR_CONFIRMATION_STATUS.FAILED
   const windowWidth = useWindowWidth()
 
   const txExplorerLink = getExplorerTxUrl(executionData.txHash, isHome)
@@ -48,26 +71,47 @@ export const ExecutionConfirmation = ({ executionData, isHome }: ExecutionConfir
       <table>
         <Thead>
           <tr>
-            <th>Executed by</th>
+            <th>{requiredManualExecution ? 'Execution info' : 'Executed by'}</th>
             <th className="text-center">Status</th>
-            <th className="text-center">Age</th>
+            {showAgeColumn && <th className="text-center">Age</th>}
+            {availableManualExecution && <th className="text-center">Actions</th>}
           </tr>
         </Thead>
         <tbody>
           <tr>
-            <td>{formattedValidator ? formattedValidator : <SimpleLoading />}</td>
-            <StatusTd className="text-center">{getExecutionStatusElement(executionData.status)}</StatusTd>
-            <AgeTd className="text-center">
-              {executionData.timestamp > 0 ? (
-                <ExplorerTxLink href={txExplorerLink} target="_blank">
-                  {formatTimestamp(executionData.timestamp)}
-                </ExplorerTxLink>
-              ) : executionData.status === VALIDATOR_CONFIRMATION_STATUS.WAITING ? (
-                ''
+            <td>
+              {requiredManualExecution ? (
+                'Manual user action is required to complete the operation'
+              ) : formattedValidator ? (
+                formattedValidator
               ) : (
-                SEARCHING_TX
+                <SimpleLoading />
               )}
-            </AgeTd>
+            </td>
+            <StatusTd className="text-center">{getExecutionStatusElement(executionData.status)}</StatusTd>
+            {showAgeColumn && (
+              <AgeTd className="text-center">
+                {executionData.timestamp > 0 ? (
+                  <ExplorerTxLink href={txExplorerLink} target="_blank">
+                    {formatTimestamp(executionData.timestamp)}
+                  </ExplorerTxLink>
+                ) : executionData.status === VALIDATOR_CONFIRMATION_STATUS.WAITING ? (
+                  ''
+                ) : (
+                  SEARCHING_TX
+                )}
+              </AgeTd>
+            )}
+            {availableManualExecution && (
+              <td>
+                <ManualExecutionButton
+                  messageData={messageData}
+                  setExecutionData={setExecutionData}
+                  signatureCollected={signatureCollected as string[]}
+                  setPendingExecution={setPendingExecution}
+                />
+              </td>
+            )}
           </tr>
         </tbody>
       </table>

alm/src/components/MainPage.tsx

@@ -8,6 +8,7 @@ import { TransactionReceipt } from 'web3-eth'
 import { InfoAlert } from './commons/InfoAlert'
 import { ExplorerTxLink } from './commons/ExplorerTxLink'
 import { FOREIGN_NETWORK_NAME, HOME_NETWORK_NAME } from '../config/constants'
+import { ErrorAlert } from './commons/ErrorAlert'
 
 const StyledMainPage = styled.div`
   text-align: center;
@@ -51,7 +52,7 @@ export interface FormSubmitParams {
 
 export const MainPage = () => {
   const history = useHistory()
-  const { home, foreign } = useStateProvider()
+  const { home, foreign, error, setError } = useStateProvider()
   const [networkName, setNetworkName] = useState('')
   const [receipt, setReceipt] = useState<Maybe<TransactionReceipt>>(null)
   const [showInfoAlert, setShowInfoAlert] = useState(false)
@@ -131,6 +132,7 @@ export const MainPage = () => {
             </AlertP>
           </InfoAlert>
         )}
+        {error && <ErrorAlert onClick={() => setError('')} error={error} />}
         <Route exact path={['/']} children={<Form onSubmit={onFormSubmit} />} />
         <Route
           path={['/:chainId/:txHash/:messageIdParam', '/:chainId/:txHash']}

alm/src/components/ManualExecutionButton.tsx

@@ -0,0 +1,146 @@
+import React, { useState, useEffect } from 'react'
+import styled from 'styled-components'
+import { InjectedConnector } from '@web3-react/injected-connector'
+import { useWeb3React } from '@web3-react/core'
+import {
+  DOUBLE_EXECUTION_ATTEMPT_ERROR,
+  EXECUTION_FAILED_ERROR,
+  EXECUTION_OUT_OF_GAS_ERROR,
+  FOREIGN_EXPLORER_API,
+  INCORRECT_CHAIN_ERROR,
+  VALIDATOR_CONFIRMATION_STATUS
+} from '../config/constants'
+import { useStateProvider } from '../state/StateProvider'
+import { signatureToVRS, packSignatures } from '../utils/signatures'
+import { getSuccessExecutionData } from '../utils/getFinalizationEvent'
+import { TransactionReceipt } from 'web3-eth'
+
+const StyledButton = styled.button`
+  color: var(--button-color);
+  border-color: var(--font-color);
+  margin-top: 10px;
+  &:focus {
+    outline: var(--button-color);
+  }
+`
+
+interface ManualExecutionButtonParams {
+  messageData: string
+  setExecutionData: Function
+  signatureCollected: string[]
+  setPendingExecution: Function
+}
+
+export const ManualExecutionButton = ({
+  messageData,
+  setExecutionData,
+  signatureCollected,
+  setPendingExecution
+}: ManualExecutionButtonParams) => {
+  const { foreign, setError } = useStateProvider()
+  const { library, activate, account, active } = useWeb3React()
+  const [manualExecution, setManualExecution] = useState(false)
+
+  useEffect(
+    () => {
+      if (!manualExecution || !foreign.chainId) return
+
+      if (!active) {
+        activate(new InjectedConnector({ supportedChainIds: [foreign.chainId] }), e => {
+          if (e.message.includes('Unsupported chain id')) {
+            setError(INCORRECT_CHAIN_ERROR)
+            const { ethereum } = window as any
+
+            // remove the error message after chain is correctly changed to the foreign one
+            const listener = (chainId: string) => {
+              if (parseInt(chainId.slice(2), 16) === foreign.chainId) {
+                ethereum.removeListener('chainChanged', listener)
+                setError((error: string) => (error === INCORRECT_CHAIN_ERROR ? '' : error))
+              }
+            }
+            ethereum.on('chainChanged', listener)
+          } else {
+            setError(e.message)
+          }
+          setManualExecution(false)
+        })
+        return
+      }
+
+      if (!library || !foreign.bridgeContract || !signatureCollected || !signatureCollected.length) return
+
+      const signatures = packSignatures(signatureCollected.map(signatureToVRS))
+      const messageId = messageData.slice(0, 66)
+      const bridge = foreign.bridgeContract
+      const data = bridge.methods.executeSignatures(messageData, signatures).encodeABI()
+      setManualExecution(false)
+
+      library.eth
+        .sendTransaction({
+          from: account,
+          to: foreign.bridgeAddress,
+          data
+        })
+        .on('transactionHash', (txHash: string) => {
+          setExecutionData({
+            status: VALIDATOR_CONFIRMATION_STATUS.PENDING,
+            validator: account,
+            txHash,
+            timestamp: Math.floor(new Date().getTime() / 1000.0),
+            executionResult: false
+          })
+          setPendingExecution(true)
+        })
+        .on('error', async (e: Error, receipt: TransactionReceipt) => {
+          if (e.message.includes('Transaction has been reverted by the EVM')) {
+            const successExecutionData = await getSuccessExecutionData(
+              bridge,
+              'RelayedMessage',
+              library,
+              messageId,
+              FOREIGN_EXPLORER_API
+            )
+            if (successExecutionData) {
+              setExecutionData(successExecutionData)
+              setError(DOUBLE_EXECUTION_ATTEMPT_ERROR)
+            } else {
+              const { gas } = await library.eth.getTransaction(receipt.transactionHash)
+              setExecutionData({
+                status: VALIDATOR_CONFIRMATION_STATUS.FAILED,
+                validator: account,
+                txHash: receipt.transactionHash,
+                timestamp: Math.floor(new Date().getTime() / 1000.0),
+                executionResult: false
+              })
+              setError(gas === receipt.gasUsed ? EXECUTION_OUT_OF_GAS_ERROR : EXECUTION_FAILED_ERROR)
+            }
+          } else {
+            setError(e.message)
+          }
+        })
+    },
+    [
+      manualExecution,
+      library,
+      activate,
+      active,
+      account,
+      foreign.chainId,
+      foreign.bridgeAddress,
+      foreign.bridgeContract,
+      setError,
+      messageData,
+      signatureCollected,
+      setExecutionData,
+      setPendingExecution
+    ]
+  )
+
+  return (
+    <div className="is-center">
+      <StyledButton className="button outline" onClick={() => setManualExecution(true)}>
+        Execute
+      </StyledButton>
+    </div>
+  )
+}

alm/src/components/StatusContainer.tsx

@@ -10,6 +10,7 @@ import { ExplorerTxLink } from './commons/ExplorerTxLink'
 import { ConfirmationsContainer } from './ConfirmationsContainer'
 import { TransactionReceipt } from 'web3-eth'
 import { BackButton } from './commons/BackButton'
+import { useClosestBlock } from '../hooks/useClosestBlock'
 
 export interface StatusContainerParam {
   onBackToMain: () => void
@@ -23,12 +24,15 @@ export const StatusContainer = ({ onBackToMain, setNetworkFromParams, receiptPar
   const { chainId, txHash, messageIdParam } = useParams()
   const validChainId = chainId === home.chainId.toString() || chainId === foreign.chainId.toString()
   const validParameters = validChainId && validTxHash(txHash)
+  const isHome = chainId === home.chainId.toString()
 
   const { messages, receipt, status, description, timestamp, loading } = useTransactionStatus({
     txHash: validParameters ? txHash : '',
     chainId: validParameters ? parseInt(chainId) : 0,
     receiptParam
   })
+  const homeStartBlock = useClosestBlock(true, isHome, receipt, timestamp)
+  const foreignStartBlock = useClosestBlock(false, isHome, receipt, timestamp)
 
   const selectedMessageId = messageIdParam === undefined || messages[messageIdParam] === undefined ? -1 : messageIdParam
 
@@ -64,7 +68,6 @@ export const StatusContainer = ({ onBackToMain, setNetworkFromParams, receiptPar
   const displayReference = multiMessageSelected ? messages[selectedMessageId].id : txHash
   const formattedMessageId = formatTxHash(displayReference)
 
-  const isHome = chainId === home.chainId.toString()
   const txExplorerLink = getExplorerTxUrl(txHash, isHome)
   const displayExplorerLink = status !== TRANSACTION_STATUS.NOT_FOUND
 
@@ -101,7 +104,13 @@ export const StatusContainer = ({ onBackToMain, setNetworkFromParams, receiptPar
       )}
       {displayMessageSelector && <MessageSelector messages={messages} onMessageSelected={onMessageSelected} />}
       {displayConfirmations && (
-        <ConfirmationsContainer message={messageToConfirm} receipt={receipt} fromHome={isHome} timestamp={timestamp} />
+        <ConfirmationsContainer
+          message={messageToConfirm}
+          receipt={receipt}
+          fromHome={isHome}
+          homeStartBlock={homeStartBlock}
+          foreignStartBlock={foreignStartBlock}
+        />
       )}
       <BackButton onBackToMain={onBackToMain} />
     </div>

alm/src/components/commons/CloseIcon.tsx

@@ -1,6 +1,6 @@
 import React from 'react'
 
-export const CloseIcon = () => (
+export const CloseIcon = ({ color }: { color?: string }) => (
   <svg
     aria-hidden="true"
     focusable="false"
@@ -10,12 +10,9 @@ export const CloseIcon = () => (
     role="img"
     xmlns="http://www.w3.org/2000/svg"
     viewBox="0 0 352 512"
-    fill="#1890ff"
+    fill={color || '#1890ff'}
     height="1em"
   >
-    <path
-      fill="#1890ff"
-      d="M242.72 256l100.07-100.07c12.28-12.28 12.28-32.19 0-44.48l-22.24-22.24c-12.28-12.28-32.19-12.28-44.48 0L176 189.28 75.93 89.21c-12.28-12.28-32.19-12.28-44.48 0L9.21 111.45c-12.28 12.28-12.28 32.19 0 44.48L109.28 256 9.21 356.07c-12.28 12.28-12.28 32.19 0 44.48l22.24 22.24c12.28 12.28 32.2 12.28 44.48 0L176 322.72l100.07 100.07c12.28 12.28 32.2 12.28 44.48 0l22.24-22.24c12.28-12.28 12.28-32.19 0-44.48L242.72 256z"
-    />
+    <path d="M242.72 256l100.07-100.07c12.28-12.28 12.28-32.19 0-44.48l-22.24-22.24c-12.28-12.28-32.19-12.28-44.48 0L176 189.28 75.93 89.21c-12.28-12.28-32.19-12.28-44.48 0L9.21 111.45c-12.28 12.28-12.28 32.19 0 44.48L109.28 256 9.21 356.07c-12.28 12.28-12.28 32.19 0 44.48l22.24 22.24c12.28 12.28 32.2 12.28 44.48 0L176 322.72l100.07 100.07c12.28 12.28 32.2 12.28 44.48 0l22.24-22.24c12.28-12.28 12.28-32.19 0-44.48L242.72 256z" />
   </svg>
 )

alm/src/components/commons/ErrorAlert.tsx

@@ -0,0 +1,48 @@
+import React from 'react'
+import styled from 'styled-components'
+import { InfoIcon } from './InfoIcon'
+import { CloseIcon } from './CloseIcon'
+import { ExplorerTxLink } from './ExplorerTxLink'
+
+const StyledErrorAlert = styled.div`
+  border: 1px solid var(--failed-color);
+  border-radius: 4px;
+  margin-bottom: 20px;
+  padding-top: 10px;
+`
+
+const CloseIconContainer = styled.div`
+  cursor: pointer;
+`
+
+const TextContainer = styled.div`
+  white-space: pre-wrap;
+  flex-direction: column;
+`
+
+export const ErrorAlert = ({ onClick, error }: { onClick: () => void; error: string }) => {
+  const errorArray = error.split('%link')
+  const text = errorArray[0]
+  let link
+  if (errorArray.length > 1) {
+    link = (
+      <ExplorerTxLink href={errorArray[1]} target="_blank" rel="noopener noreferrer">
+        {errorArray[1]}
+      </ExplorerTxLink>
+    )
+  }
+  return (
+    <div className="row is-center">
+      <StyledErrorAlert className="col-10 is-vertical-align row">
+        <InfoIcon color="var(--failed-color)" />
+        <TextContainer className="col-10">
+          {text}
+          {link}
+        </TextContainer>
+        <CloseIconContainer className="col-1 is-vertical-align is-center" onClick={onClick}>
+          <CloseIcon color="var(--failed-color)" />
+        </CloseIconContainer>
+      </StyledErrorAlert>
+    </div>
+  )
+}

alm/src/components/commons/InfoIcon.tsx

@@ -1,6 +1,6 @@
 import React from 'react'
 
-export const InfoIcon = () => (
+export const InfoIcon = ({ color }: { color?: string }) => (
   <svg
     className="col-1 is-left"
     viewBox="64 64 896 896"
@@ -8,7 +8,7 @@ export const InfoIcon = () => (
     data-icon="info-circle"
     width="1em"
     height="1em"
-    fill="#1890ff"
+    fill={color || '#1890ff'}
     aria-hidden="true"
   >
     <path d="M512 64C264.6 64 64 264.6 64 512s200.6 448 448 448 448-200.6 448-448S759.4 64 512 64zm32 664c0 4.4-3.6 8-8 8h-48c-4.4 0-8-3.6-8-8V456c0-4.4 3.6-8 8-8h48c4.4 0 8 3.6 8 8v272zm-32-344a48.01 48.01 0 010-96 48.01 48.01 0 010 96z" />

alm/src/config/constants.ts

@@ -13,11 +13,13 @@ export const FOREIGN_EXPLORER_TX_TEMPLATE: string = process.env.REACT_APP_ALM_FO
 export const HOME_EXPLORER_API: string = process.env.REACT_APP_ALM_HOME_EXPLORER_API || ''
 export const FOREIGN_EXPLORER_API: string = process.env.REACT_APP_ALM_FOREIGN_EXPLORER_API || ''
 
+export const ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION: boolean =
+  (process.env.REACT_APP_ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION || '').toLowerCase() === 'true'
+
 export const HOME_RPC_POLLING_INTERVAL: number = 5000
 export const FOREIGN_RPC_POLLING_INTERVAL: number = 5000
-export const BLOCK_RANGE: number = 50
-export const ONE_DAY_TIMESTAMP: number = 86400
-export const THREE_DAYS_TIMESTAMP: number = 259200
+export const BLOCK_RANGE: number = 500
+export const MAX_TX_SEARCH_BLOCK_RANGE: number = 10000
 
 export const EXECUTE_AFFIRMATION_HASH = 'e7a2c01f'
 export const SUBMIT_SIGNATURE_HASH = '630cea8e'
@@ -61,3 +63,14 @@ export const VALIDATOR_CONFIRMATION_STATUS = {
 }
 
 export const SEARCHING_TX = 'Searching Transaction...'
+
+export const INCORRECT_CHAIN_ERROR = `Incorrect chain chosen. Switch to ${FOREIGN_NETWORK_NAME} in the wallet.`
+
+export const DOUBLE_EXECUTION_ATTEMPT_ERROR = `Your execution transaction has been reverted.
+However, the execution completed successfully in the transaction sent by a different party.`
+
+export const EXECUTION_FAILED_ERROR = `Your execution transaction has been reverted.
+Please, contact the support by messaging on %linkhttps://forum.poa.network/c/support`
+
+export const EXECUTION_OUT_OF_GAS_ERROR = `Your execution transaction has been reverted due to Out-of-Gas error.
+Please, resend the transaction and provide more gas to it.`

alm/src/config/descriptions.ts

@@ -1,4 +1,6 @@
 // %t will be replaced by the time -> x minutes/hours/days ago
+import { ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION } from './constants'
+
 export const TRANSACTION_STATUS_DESCRIPTION: { [key: string]: string } = {
   SUCCESS_MULTIPLE_MESSAGES: 'was initiated %t and contains several bridge messages. Specify one of them:',
   SUCCESS_ONE_MESSAGE: 'was initiated %t',
@@ -24,7 +26,7 @@ export const CONFIRMATIONS_STATUS_LABEL_HOME: { [key: string]: string } = {
   SUCCESS_MESSAGE_FAILED: 'Success',
   EXECUTION_FAILED: 'Execution failed',
   EXECUTION_PENDING: 'Execution pending',
-  EXECUTION_WAITING: 'Execution waiting',
+  EXECUTION_WAITING: ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION ? 'Manual execution waiting' : 'Execution waiting',
   FAILED: 'Confirmation Failed',
   PENDING: 'Confirmation Pending',
   WAITING_VALIDATORS: 'Confirmation Waiting',
@@ -55,11 +57,12 @@ export const CONFIRMATIONS_STATUS_DESCRIPTION_HOME: { [key: string]: string } =
   SUCCESS_MESSAGE_FAILED:
     'The specified transaction was included in a block,\nthe validators collected signatures and the cross-chain relay was executed correctly,\nbut the contained message execution failed.\nContact the support of the application you used to produce the transaction for the clarifications.',
   EXECUTION_FAILED:
-    'The specified transaction was included in a block\nand the validators collected signatures. The\nvalidator’s transaction with collected signatures was\nsent but did not succeed. Contact to the validators by messaging\non %linkhttps://forum.poa.network/c/support',
+    'The specified transaction was included in a block\nand the validators collected signatures. The\n transaction with collected signatures was\nsent but did not succeed. Contact to the validators by messaging\non %linkhttps://forum.poa.network/c/support',
   EXECUTION_PENDING:
-    'The specified transaction was included in a block\nand the validators collected signatures. The\nvalidator’s transaction with collected signatures was\nsent but is not yet added to a block.',
-  EXECUTION_WAITING:
-    'The specified transaction was included in a block\nand the validators collected signatures. Either\n1. One of the validators is waiting for chain finalization.\n2. A validator skipped its duty to relay signatures.\n3. The execution transaction is still pending (e.g. due to the gas price spike).\nCheck status again after a few blocks. If the issue still persists contact to the validators by messaging on %linkhttps://forum.poa.network/c/support',
+    'The specified transaction was included in a block\nand the validators collected signatures. The\n transaction with collected signatures was\nsent but is not yet added to a block.',
+  EXECUTION_WAITING: ALM_HOME_TO_FOREIGN_MANUAL_EXECUTION
+    ? 'The specified transaction was included in a block\nand the validators collected signatures.\nNow the manual user action is required to complete message execution.\n Please, press the "Execute" button.'
+    : 'The specified transaction was included in a block\nand the validators collected signatures. Either\n1. One of the validators is waiting for chain finalization.\n2. A validator skipped its duty to relay signatures.\n3. The execution transaction is still pending (e.g. due to the gas price spike).\nCheck status again after a few blocks or force execution by pressing the "Execute" button.\nIf the issue still persists contact to the validators by messaging on %linkhttps://forum.poa.network/c/support',
   FAILED:
     'The specified transaction was included in a block,\nbut transactions with signatures sent by a majority of\nvalidators failed. The cross-chain relay request will\nnot be processed. Contact to the validators by\nmessaging on %linkhttps://forum.poa.network/c/support',
   PENDING:

alm/src/hooks/useBlockConfirmations.ts

@@ -4,6 +4,8 @@ import { useStateProvider } from '../state/StateProvider'
 import { Contract } from 'web3-eth-contract'
 import { getRequiredBlockConfirmations } from '../utils/contract'
 import { foreignSnapshotProvider, homeSnapshotProvider, SnapshotProvider } from '../services/SnapshotProvider'
+import Web3 from 'web3'
+import { FOREIGN_EXPLORER_API, HOME_EXPLORER_API } from '../config/constants'
 
 export interface UseBlockConfirmationsParams {
   fromHome: boolean
@@ -19,9 +21,11 @@ export const useBlockConfirmations = ({ receipt, fromHome }: UseBlockConfirmatio
     contract: Contract,
     receipt: TransactionReceipt,
     setResult: Function,
-    snapshotProvider: SnapshotProvider
+    snapshotProvider: SnapshotProvider,
+    web3: Web3,
+    api: string
   ) => {
-    const result = await getRequiredBlockConfirmations(contract, receipt.blockNumber, snapshotProvider)
+    const result = await getRequiredBlockConfirmations(contract, receipt.blockNumber, snapshotProvider, web3, api)
     setResult(result)
   }
 
@@ -29,10 +33,12 @@ export const useBlockConfirmations = ({ receipt, fromHome }: UseBlockConfirmatio
     () => {
       const bridgeContract = fromHome ? home.bridgeContract : foreign.bridgeContract
       const snapshotProvider = fromHome ? homeSnapshotProvider : foreignSnapshotProvider
-      if (!bridgeContract || !receipt) return
-      callRequireBlockConfirmations(bridgeContract, receipt, setBlockConfirmations, snapshotProvider)
+      const web3 = fromHome ? home.web3 : foreign.web3
+      const api = fromHome ? HOME_EXPLORER_API : FOREIGN_EXPLORER_API
+      if (!bridgeContract || !receipt || !web3) return
+      callRequireBlockConfirmations(bridgeContract, receipt, setBlockConfirmations, snapshotProvider, web3, api)
     },
-    [home.bridgeContract, foreign.bridgeContract, receipt, fromHome]
+    [home.bridgeContract, foreign.bridgeContract, receipt, fromHome, home.web3, foreign.web3]
   )
 
   return {

alm/src/hooks/useClosestBlock.ts

@@ -0,0 +1,68 @@
+import { useEffect, useState } from 'react'
+import { TransactionReceipt } from 'web3-eth'
+import { useStateProvider } from '../state/StateProvider'
+import { FOREIGN_EXPLORER_API, HOME_EXPLORER_API } from '../config/constants'
+import { getClosestBlockByTimestamp } from '../utils/explorer'
+
+export function useClosestBlock(
+  searchHome: boolean,
+  fromHome: boolean,
+  receipt: Maybe<TransactionReceipt>,
+  timestamp: number
+) {
+  const { home, foreign } = useStateProvider()
+  const [blockNumber, setBlockNumber] = useState<number | null>(null)
+
+  useEffect(
+    () => {
+      if (!receipt || blockNumber || !timestamp) return
+
+      if (fromHome === searchHome) {
+        setBlockNumber(receipt.blockNumber)
+        return
+      }
+
+      const web3 = searchHome ? home.web3 : foreign.web3
+      if (!web3) return
+
+      const getBlock = async () => {
+        // try to fast-fetch closest block number from the chain explorer
+        try {
+          const api = searchHome ? HOME_EXPLORER_API : FOREIGN_EXPLORER_API
+          setBlockNumber(await getClosestBlockByTimestamp(api, timestamp))
+          return
+        } catch {}
+
+        const lastBlock = await web3.eth.getBlock('latest')
+        if (lastBlock.timestamp <= timestamp) {
+          setBlockNumber(lastBlock.number)
+          return
+        }
+
+        const oldBlock = await web3.eth.getBlock(Math.max(lastBlock.number - 10000, 1))
+        const blockDiff = lastBlock.number - oldBlock.number
+        const timeDiff = (lastBlock.timestamp as number) - (oldBlock.timestamp as number)
+        const averageBlockTime = timeDiff / blockDiff
+        let currentBlock = lastBlock
+
+        let prevBlockDiff = Infinity
+        while (true) {
+          const timeDiff = (currentBlock.timestamp as number) - timestamp
+          const blockDiff = Math.ceil(timeDiff / averageBlockTime)
+          if (Math.abs(blockDiff) < 5 || Math.abs(blockDiff) >= Math.abs(prevBlockDiff)) {
+            setBlockNumber(currentBlock.number - blockDiff - 5)
+            break
+          }
+
+          prevBlockDiff = blockDiff
+          currentBlock = await web3.eth.getBlock(currentBlock.number - blockDiff)
+        }
+      }
+
+      getBlock()
+    },
+    [blockNumber, foreign.web3, fromHome, home.web3, receipt, searchHome, timestamp]
+  )
+
+  return blockNumber
+}

alm/src/hooks/useMessageConfirmations.ts

@@ -3,7 +3,6 @@ import { TransactionReceipt } from 'web3-eth'
 import { MessageObject } from '../utils/web3'
 import { useEffect, useState } from 'react'
 import { EventData } from 'web3-eth-contract'
-import { getAffirmationsSigned, getMessagesSigned } from '../utils/contract'
 import {
   BLOCK_RANGE,
   CONFIRMATIONS_STATUS,
@@ -12,9 +11,6 @@ import {
   VALIDATOR_CONFIRMATION_STATUS
 } from '../config/constants'
 import { homeBlockNumberProvider, foreignBlockNumberProvider } from '../services/BlockNumberProvider'
-import { checkSignaturesWaitingForBLocks } from '../utils/signatureWaitingForBlocks'
-import { getCollectedSignaturesEvent } from '../utils/getCollectedSignaturesEvent'
-import { checkWaitingBlocksForExecution } from '../utils/executionWaitingForBlocks'
 import { getConfirmationsForTx } from '../utils/getConfirmationsForTx'
 import { getFinalizationEvent } from '../utils/getFinalizationEvent'
 import {
@@ -29,7 +25,8 @@ export interface useMessageConfirmationsParams {
   message: MessageObject
   receipt: Maybe<TransactionReceipt>
   fromHome: boolean
-  timestamp: number
+  homeStartBlock: Maybe<number>
+  foreignStartBlock: Maybe<number>
   requiredSignatures: number
   validatorList: string[]
   blockConfirmations: number
@@ -57,17 +54,19 @@ export const useMessageConfirmations = ({
   message,
   receipt,
   fromHome,
-  timestamp,
+  homeStartBlock,
+  foreignStartBlock,
   requiredSignatures,
   validatorList,
   blockConfirmations
 }: useMessageConfirmationsParams) => {
   const { home, foreign } = useStateProvider()
-  const [confirmations, setConfirmations] = useState<Array<ConfirmationParam>>([])
+  const [confirmations, setConfirmations] = useState<ConfirmationParam[]>([])
   const [status, setStatus] = useState(CONFIRMATIONS_STATUS.UNDEFINED)
   const [waitingBlocks, setWaitingBlocks] = useState(false)
   const [waitingBlocksResolved, setWaitingBlocksResolved] = useState(false)
-  const [signatureCollected, setSignatureCollected] = useState(false)
+  const [signatureCollected, setSignatureCollected] = useState<boolean | string[]>(false)
+  const [executionEventsFetched, setExecutionEventsFetched] = useState(false)
   const [collectedSignaturesEvent, setCollectedSignaturesEvent] = useState<Maybe<EventData>>(null)
   const [executionData, setExecutionData] = useState<ExecutionData>({
     status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED,
@@ -83,155 +82,188 @@ export const useMessageConfirmations = ({
   const [pendingConfirmations, setPendingConfirmations] = useState(false)
   const [pendingExecution, setPendingExecution] = useState(false)
 
-  const existsConfirmation = (confirmationArray: ConfirmationParam[]) => {
-    const filteredList = confirmationArray.filter(
+  const existsConfirmation = (confirmationArray: ConfirmationParam[]) =>
+    confirmationArray.some(
       c => c.status !== VALIDATOR_CONFIRMATION_STATUS.UNDEFINED && c.status !== VALIDATOR_CONFIRMATION_STATUS.WAITING
     )
-    return filteredList.length > 0
-  }
+
+  // start watching blocks at the start
+  useEffect(
+    () => {
+      if (!home.web3 || !foreign.web3) return
+
+      homeBlockNumberProvider.start(home.web3)
+      foreignBlockNumberProvider.start(foreign.web3)
+    },
+    [foreign.web3, home.web3]
+  )
 
   // Check if the validators are waiting for block confirmations to verify the message
   useEffect(
     () => {
-      if (!receipt || !blockConfirmations) return
+      if (!receipt || !blockConfirmations || waitingBlocksResolved) return
 
-      const subscriptions: Array<number> = []
-
-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
-      }
+      let timeoutId: number
 
       const blockProvider = fromHome ? homeBlockNumberProvider : foreignBlockNumberProvider
       const interval = fromHome ? HOME_RPC_POLLING_INTERVAL : FOREIGN_RPC_POLLING_INTERVAL
-      const web3 = fromHome ? home.web3 : foreign.web3
-      blockProvider.start(web3)
-
       const targetBlock = receipt.blockNumber + blockConfirmations
+      const validatorsWaiting = validatorList.map(validator => ({
+        validator,
+        status: VALIDATOR_CONFIRMATION_STATUS.WAITING,
+        txHash: '',
+        timestamp: 0
+      }))
 
-      checkSignaturesWaitingForBLocks(
-        targetBlock,
-        setWaitingBlocks,
-        setWaitingBlocksResolved,
-        validatorList,
-        setConfirmations,
-        blockProvider,
-        interval,
-        subscriptions
-      )
+      const checkSignaturesWaitingForBLocks = () => {
+        const currentBlock = blockProvider.get()
 
-      return () => {
-        unsubscribe()
-        blockProvider.stop()
+        if (currentBlock && currentBlock >= targetBlock) {
+          setWaitingBlocksResolved(true)
+          setWaitingBlocks(false)
+        } else if (currentBlock) {
+          setWaitingBlocks(true)
+          setConfirmations(validatorsWaiting)
+          timeoutId = setTimeout(checkSignaturesWaitingForBLocks, interval)
+        } else {
+          timeoutId = setTimeout(checkSignaturesWaitingForBLocks, 500)
+        }
       }
+
+      checkSignaturesWaitingForBLocks()
+
+      return () => clearTimeout(timeoutId)
     },
-    [blockConfirmations, foreign.web3, fromHome, validatorList, home.web3, receipt]
+    [blockConfirmations, fromHome, receipt, validatorList, waitingBlocksResolved]
   )
 
   // The collected signature event is only fetched once the signatures are collected on tx from home to foreign, to calculate if
   // the execution tx on the foreign network is waiting for block confirmations
   // This is executed if the message is in Home to Foreign direction only
+  const hasCollectedSignatures = !!signatureCollected // true or string[]
   useEffect(
     () => {
-      if (!fromHome || !receipt || !home.web3 || !signatureCollected) return
+      if (!fromHome || !receipt || !home.web3 || !home.bridgeContract || !hasCollectedSignatures) return
 
-      const subscriptions: Array<number> = []
+      let timeoutId: number
+      let isCancelled = false
 
-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
+      const messageHash = home.web3.utils.soliditySha3Raw(message.data)
+      const contract = home.bridgeContract
+
+      const getCollectedSignaturesEvent = async (fromBlock: number, toBlock: number) => {
+        const currentBlock = homeBlockNumberProvider.get()
+
+        if (currentBlock) {
+          // prevent errors if the toBlock parameter is bigger than the latest
+          const securedToBlock = toBlock >= currentBlock ? currentBlock : toBlock
+          const events = await contract.getPastEvents('CollectedSignatures', {
+            fromBlock,
+            toBlock: securedToBlock
+          })
+          const event = events.find(e => e.returnValues.messageHash === messageHash)
+          if (event) {
+            setCollectedSignaturesEvent(event)
+          } else if (!isCancelled) {
+            timeoutId = setTimeout(() => getCollectedSignaturesEvent(securedToBlock, securedToBlock + BLOCK_RANGE), 500)
+          }
+        } else if (!isCancelled) {
+          timeoutId = setTimeout(() => getCollectedSignaturesEvent(fromBlock, toBlock), 500)
+        }
       }
 
-      homeBlockNumberProvider.start(home.web3)
-
-      const fromBlock = receipt.blockNumber
-      const toBlock = fromBlock + BLOCK_RANGE
-      const messageHash = home.web3.utils.soliditySha3Raw(message.data)
-
-      getCollectedSignaturesEvent(
-        home.web3,
-        home.bridgeContract,
-        fromBlock,
-        toBlock,
-        messageHash,
-        setCollectedSignaturesEvent,
-        subscriptions
-      )
+      getCollectedSignaturesEvent(receipt.blockNumber, receipt.blockNumber + BLOCK_RANGE)
 
       return () => {
-        unsubscribe()
-        homeBlockNumberProvider.stop()
+        clearTimeout(timeoutId)
+        isCancelled = true
       }
     },
-    [fromHome, home.bridgeContract, home.web3, message.data, receipt, signatureCollected]
+    [fromHome, home.bridgeContract, home.web3, message.data, receipt, hasCollectedSignatures]
   )
 
   // Check if the responsible validator is waiting for block confirmations to execute the message on foreign network
   // This is executed if the message is in Home to Foreign direction only
   useEffect(
     () => {
-      if (!fromHome || !home.web3 || !receipt || !collectedSignaturesEvent || !blockConfirmations) return
+      if (!fromHome || !home.web3 || !collectedSignaturesEvent || !blockConfirmations) return
+      if (waitingBlocksForExecutionResolved) return
 
-      const subscriptions: Array<number> = []
+      let timeoutId: number
 
-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
-      }
-
-      homeBlockNumberProvider.start(home.web3)
       const targetBlock = collectedSignaturesEvent.blockNumber + blockConfirmations
 
-      checkWaitingBlocksForExecution(
-        homeBlockNumberProvider,
-        HOME_RPC_POLLING_INTERVAL,
-        targetBlock,
-        collectedSignaturesEvent,
-        setWaitingBlocksForExecution,
-        setWaitingBlocksForExecutionResolved,
-        setExecutionData,
-        subscriptions
-      )
+      const checkWaitingBlocksForExecution = () => {
+        const currentBlock = homeBlockNumberProvider.get()
 
-      return () => {
-        unsubscribe()
-        homeBlockNumberProvider.stop()
+        if (currentBlock && currentBlock >= targetBlock) {
+          const undefinedExecutionState = {
+            status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED,
+            validator: collectedSignaturesEvent.returnValues.authorityResponsibleForRelay,
+            txHash: '',
+            timestamp: 0,
+            executionResult: false
+          }
+          setExecutionData(
+            (data: any) =>
+              data.status === VALIDATOR_CONFIRMATION_STATUS.UNDEFINED ||
+              data.status === VALIDATOR_CONFIRMATION_STATUS.WAITING
+                ? undefinedExecutionState
+                : data
+          )
+          setWaitingBlocksForExecutionResolved(true)
+          setWaitingBlocksForExecution(false)
+        } else if (currentBlock) {
+          setWaitingBlocksForExecution(true)
+          const waitingExecutionState = {
+            status: VALIDATOR_CONFIRMATION_STATUS.WAITING,
+            validator: collectedSignaturesEvent.returnValues.authorityResponsibleForRelay,
+            txHash: '',
+            timestamp: 0,
+            executionResult: false
+          }
+          setExecutionData(
+            (data: any) =>
+              data.status === VALIDATOR_CONFIRMATION_STATUS.UNDEFINED ||
+              data.status === VALIDATOR_CONFIRMATION_STATUS.WAITING
+                ? waitingExecutionState
+                : data
+          )
+          timeoutId = setTimeout(() => checkWaitingBlocksForExecution(), HOME_RPC_POLLING_INTERVAL)
+        } else {
+          timeoutId = setTimeout(() => checkWaitingBlocksForExecution(), 500)
+        }
       }
+
+      checkWaitingBlocksForExecution()
+
+      return () => clearTimeout(timeoutId)
     },
-    [collectedSignaturesEvent, fromHome, blockConfirmations, home.web3, receipt]
+    [collectedSignaturesEvent, fromHome, blockConfirmations, home.web3, waitingBlocksForExecutionResolved]
   )
 
   // Checks if validators verified the message
   // To avoid making extra requests, this is only executed when validators finished waiting for blocks confirmations
   useEffect(
     () => {
-      if (!waitingBlocksResolved || !timestamp || !requiredSignatures) return
+      if (!waitingBlocksResolved || !homeStartBlock || !requiredSignatures || !home.web3 || !home.bridgeContract) return
+      if (!validatorList || !validatorList.length) return
 
-      const subscriptions: Array<number> = []
-
-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
-      }
-
-      const confirmationContractMethod = fromHome ? getMessagesSigned : getAffirmationsSigned
+      let timeoutId: number
+      let isCancelled = false
 
       getConfirmationsForTx(
         message.data,
         home.web3,
         validatorList,
         home.bridgeContract,
-        confirmationContractMethod,
+        fromHome,
         setConfirmations,
         requiredSignatures,
         setSignatureCollected,
-        waitingBlocksResolved,
-        subscriptions,
-        timestamp,
+        id => (timeoutId = id),
+        () => isCancelled,
+        homeStartBlock,
         getValidatorFailedTransactionsForMessage,
         setFailedConfirmations,
         getValidatorPendingTransactionsForMessage,
@@ -240,7 +272,8 @@ export const useMessageConfirmations = ({
       )
 
       return () => {
-        unsubscribe()
+        clearTimeout(timeoutId)
+        isCancelled = true
       }
     },
     [
@@ -251,7 +284,7 @@ export const useMessageConfirmations = ({
       home.bridgeContract,
       requiredSignatures,
       waitingBlocksResolved,
-      timestamp
+      homeStartBlock
     ]
   )
 
@@ -262,38 +295,34 @@ export const useMessageConfirmations = ({
     () => {
       if ((fromHome && !waitingBlocksForExecutionResolved) || (!fromHome && !waitingBlocksResolved)) return
 
-      const subscriptions: Array<number> = []
-
-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
-      }
-
-      const contractEvent = fromHome ? 'RelayedMessage' : 'AffirmationCompleted'
       const bridgeContract = fromHome ? foreign.bridgeContract : home.bridgeContract
-      const providedWeb3 = fromHome ? foreign.web3 : home.web3
-      const interval = fromHome ? FOREIGN_RPC_POLLING_INTERVAL : HOME_RPC_POLLING_INTERVAL
+      const web3 = fromHome ? foreign.web3 : home.web3
+      const startBlock = fromHome ? foreignStartBlock : homeStartBlock
+      if (!startBlock || !bridgeContract || !web3) return
+
+      let timeoutId: number
+      let isCancelled = false
 
       getFinalizationEvent(
+        fromHome,
         bridgeContract,
-        contractEvent,
-        providedWeb3,
+        web3,
         setExecutionData,
-        waitingBlocksResolved,
         message,
-        interval,
-        subscriptions,
-        timestamp,
+        id => (timeoutId = id),
+        () => isCancelled,
+        startBlock,
         collectedSignaturesEvent,
         getExecutionFailedTransactionForMessage,
         setFailedExecution,
         getExecutionPendingTransactionsForMessage,
-        setPendingExecution
+        setPendingExecution,
+        setExecutionEventsFetched
       )
 
       return () => {
-        unsubscribe()
+        clearTimeout(timeoutId)
+        isCancelled = true
       }
     },
     [
@@ -305,8 +334,9 @@ export const useMessageConfirmations = ({
       home.web3,
       waitingBlocksResolved,
       waitingBlocksForExecutionResolved,
-      timestamp,
-      collectedSignaturesEvent
+      collectedSignaturesEvent,
+      foreignStartBlock,
+      homeStartBlock
     ]
   )
 
@@ -318,6 +348,9 @@ export const useMessageConfirmations = ({
           ? CONFIRMATIONS_STATUS.SUCCESS
           : CONFIRMATIONS_STATUS.SUCCESS_MESSAGE_FAILED
         setStatus(newStatus)
+
+        foreignBlockNumberProvider.stop()
+        homeBlockNumberProvider.stop()
       } else if (signatureCollected) {
         if (fromHome) {
           if (waitingBlocksForExecution) {
@@ -369,6 +402,9 @@ export const useMessageConfirmations = ({
     status,
     signatureCollected,
     executionData,
-    waitingBlocksResolved
+    setExecutionData,
+    waitingBlocksResolved,
+    executionEventsFetched,
+    setPendingExecution
   }
 }

alm/src/hooks/useTransactionFinder.ts

@@ -11,40 +11,23 @@ export const useTransactionFinder = ({ txHash, web3 }: { txHash: string; web3: M
     () => {
       if (!txHash || !web3) return
 
-      const subscriptions: number[] = []
+      let timeoutId: number
 
-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
-      }
-
-      const getReceipt = async (
-        web3: Web3,
-        txHash: string,
-        setReceipt: Function,
-        setStatus: Function,
-        subscriptions: number[]
-      ) => {
+      const getReceipt = async () => {
         const txReceipt = await web3.eth.getTransactionReceipt(txHash)
         setReceipt(txReceipt)
 
         if (!txReceipt) {
           setStatus(TRANSACTION_STATUS.NOT_FOUND)
-          const timeoutId = setTimeout(
-            () => getReceipt(web3, txHash, setReceipt, setStatus, subscriptions),
-            HOME_RPC_POLLING_INTERVAL
-          )
-          subscriptions.push(timeoutId)
+          timeoutId = setTimeout(getReceipt, HOME_RPC_POLLING_INTERVAL)
         } else {
           setStatus(TRANSACTION_STATUS.FOUND)
         }
       }
 
-      getReceipt(web3, txHash, setReceipt, setStatus, subscriptions)
-      return () => {
-        unsubscribe()
-      }
+      getReceipt()
+
+      return () => clearTimeout(timeoutId)
     },
     [txHash, web3]
   )

alm/src/hooks/useTransactionStatus.ts

@@ -31,19 +31,14 @@ export const useTransactionStatus = ({
 
   useEffect(
     () => {
-      const subscriptions: Array<number> = []
+      if (!chainId || !txHash || !home.chainId || !foreign.chainId || !home.web3 || !foreign.web3) return
+      const isHome = chainId === home.chainId
+      const web3 = isHome ? home.web3 : foreign.web3
 
-      const unsubscribe = () => {
-        subscriptions.forEach(s => {
-          clearTimeout(s)
-        })
-      }
+      let timeoutId: number
 
       const getReceipt = async () => {
-        if (!chainId || !txHash || !home.chainId || !foreign.chainId || !home.web3 || !foreign.web3) return
         setLoading(true)
-        const isHome = chainId === home.chainId
-        const web3 = isHome ? home.web3 : foreign.web3
 
         let txReceipt
 
@@ -59,8 +54,7 @@ export const useTransactionStatus = ({
           setStatus(TRANSACTION_STATUS.NOT_FOUND)
           setDescription(getTransactionStatusDescription(TRANSACTION_STATUS.NOT_FOUND))
           setMessages([{ id: txHash, data: '' }])
-          const timeoutId = setTimeout(() => getReceipt(), HOME_RPC_POLLING_INTERVAL)
-          subscriptions.push(timeoutId)
+          timeoutId = setTimeout(() => getReceipt(), HOME_RPC_POLLING_INTERVAL)
         } else {
           const blockNumber = txReceipt.blockNumber
           const block = await getBlock(web3, blockNumber)
@@ -70,9 +64,9 @@ export const useTransactionStatus = ({
           if (txReceipt.status) {
             let bridgeMessages: Array<MessageObject>
             if (isHome) {
-              bridgeMessages = getHomeMessagesFromReceipt(txReceipt, home.web3, home.bridgeAddress)
+              bridgeMessages = getHomeMessagesFromReceipt(txReceipt, web3, home.bridgeAddress)
             } else {
-              bridgeMessages = getForeignMessagesFromReceipt(txReceipt, foreign.web3, foreign.bridgeAddress)
+              bridgeMessages = getForeignMessagesFromReceipt(txReceipt, web3, foreign.bridgeAddress)
             }
 
             if (bridgeMessages.length === 0) {
@@ -98,14 +92,9 @@ export const useTransactionStatus = ({
         setLoading(false)
       }
 
-      // unsubscribe from previous txHash
-      unsubscribe()
-
       getReceipt()
-      return () => {
-        // unsubscribe when unmount component
-        unsubscribe()
-      }
+
+      return () => clearTimeout(timeoutId)
     },
     [
       txHash,

alm/src/hooks/useValidatorContract.ts

@@ -6,6 +6,7 @@ import { BRIDGE_VALIDATORS_ABI } from '../abis'
 import { useStateProvider } from '../state/StateProvider'
 import { TransactionReceipt } from 'web3-eth'
 import { foreignSnapshotProvider, homeSnapshotProvider, SnapshotProvider } from '../services/SnapshotProvider'
+import { FOREIGN_EXPLORER_API, HOME_EXPLORER_API } from '../config/constants'
 
 export interface useValidatorContractParams {
   fromHome: boolean
@@ -30,10 +31,12 @@ export const useValidatorContract = ({ receipt, fromHome }: useValidatorContract
     contract: Maybe<Contract>,
     receipt: TransactionReceipt,
     setResult: Function,
-    snapshotProvider: SnapshotProvider
+    snapshotProvider: SnapshotProvider,
+    web3: Web3,
+    api: string
   ) => {
     if (!contract) return
-    const result = await getRequiredSignatures(contract, receipt.blockNumber, snapshotProvider)
+    const result = await getRequiredSignatures(contract, receipt.blockNumber, snapshotProvider, web3, api)
     setResult(result)
   }
 
@@ -41,32 +44,35 @@ export const useValidatorContract = ({ receipt, fromHome }: useValidatorContract
     contract: Maybe<Contract>,
     receipt: TransactionReceipt,
     setResult: Function,
-    snapshotProvider: SnapshotProvider
+    snapshotProvider: SnapshotProvider,
+    web3: Web3,
+    api: string
   ) => {
     if (!contract) return
-    const result = await getValidatorList(contract, receipt.blockNumber, snapshotProvider)
+    const result = await getValidatorList(contract, receipt.blockNumber, snapshotProvider, web3, api)
     setResult(result)
   }
 
+  const web3 = fromHome ? home.web3 : foreign.web3
+  const api = fromHome ? HOME_EXPLORER_API : FOREIGN_EXPLORER_API
+  const bridgeContract = fromHome ? home.bridgeContract : foreign.bridgeContract
+  const snapshotProvider = fromHome ? homeSnapshotProvider : foreignSnapshotProvider
+
   useEffect(
     () => {
-      const web3 = fromHome ? home.web3 : foreign.web3
-      const bridgeContract = fromHome ? home.bridgeContract : foreign.bridgeContract
-
       if (!web3 || !bridgeContract) return
       callValidatorContract(bridgeContract, web3, setValidatorContract)
     },
-    [home.web3, foreign.web3, home.bridgeContract, foreign.bridgeContract, fromHome]
+    [web3, bridgeContract]
   )
 
   useEffect(
     () => {
-      if (!receipt) return
-      const snapshotProvider = fromHome ? homeSnapshotProvider : foreignSnapshotProvider
-      callRequiredSignatures(validatorContract, receipt, setRequiredSignatures, snapshotProvider)
-      callValidatorList(validatorContract, receipt, setValidatorList, snapshotProvider)
+      if (!web3 || !receipt) return
+      callRequiredSignatures(validatorContract, receipt, setRequiredSignatures, snapshotProvider, web3, api)
+      callValidatorList(validatorContract, receipt, setValidatorList, snapshotProvider, web3, api)
     },
-    [validatorContract, receipt, fromHome]
+    [validatorContract, receipt, web3, snapshotProvider, api]
   )
 
   return {

alm/src/services/BlockNumberProvider.ts

@@ -1,6 +1,6 @@
 import Web3 from 'web3'
 import differenceInMilliseconds from 'date-fns/differenceInMilliseconds'
-import { HOME_RPC_POLLING_INTERVAL } from '../config/constants'
+import { FOREIGN_RPC_POLLING_INTERVAL, HOME_RPC_POLLING_INTERVAL } from '../config/constants'
 
 export class BlockNumberProvider {
   private running: number
@@ -61,4 +61,4 @@ export class BlockNumberProvider {
 }
 
 export const homeBlockNumberProvider = new BlockNumberProvider(HOME_RPC_POLLING_INTERVAL)
-export const foreignBlockNumberProvider = new BlockNumberProvider(HOME_RPC_POLLING_INTERVAL)
+export const foreignBlockNumberProvider = new BlockNumberProvider(FOREIGN_RPC_POLLING_INTERVAL)

alm/src/state/StateProvider.tsx

@@ -1,4 +1,4 @@
-import React, { createContext, ReactNode } from 'react'
+import React, { createContext, ReactNode, useState } from 'react'
 import { useNetwork } from '../hooks/useNetwork'
 import {
   HOME_RPC_URL,
@@ -25,6 +25,8 @@ export interface StateContext {
   home: BaseNetworkParams
   foreign: BaseNetworkParams
   loading: boolean
+  error: string
+  setError: Function
 }
 
 const initialState = {
@@ -42,7 +44,9 @@ const initialState = {
     bridgeAddress: FOREIGN_BRIDGE_ADDRESS,
     bridgeContract: null
   },
-  loading: true
+  loading: true,
+  error: '',
+  setError: () => {}
 }
 
 const StateContext = createContext<StateContext>(initialState)
@@ -54,6 +58,7 @@ export const StateProvider = ({ children }: { children: ReactNode }) => {
     homeWeb3: homeNetwork.web3,
     foreignWeb3: foreignNetwork.web3
   })
+  const [error, setError] = useState('')
 
   const value = {
     home: {
@@ -68,7 +73,9 @@ export const StateProvider = ({ children }: { children: ReactNode }) => {
       bridgeContract: foreignBridge,
       ...foreignNetwork
     },
-    loading: homeNetwork.loading || foreignNetwork.loading
+    loading: homeNetwork.loading || foreignNetwork.loading,
+    error,
+    setError
   }
 
   return <StateContext.Provider value={value}>{children}</StateContext.Provider>

alm/src/utils/__tests__/contracts.test.ts

@@ -16,7 +16,7 @@ describe('getRequiredBlockConfirmations', () => {
 
   test('Should call requiredBlockConfirmations method if no events present', async () => {
     const contract = ({
-      getPastEvents: () => {
+      getPastEvents: async () => {
         return []
       },
       methods: methodsBuilder('1')
@@ -37,7 +37,7 @@ describe('getRequiredBlockConfirmations', () => {
   })
   test('Should not call to get events if block number was included in the snapshot', async () => {
     const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => []),
+      getPastEvents: jest.fn().mockImplementation(async () => []),
       methods: methodsBuilder('3')
     } as unknown) as Contract
 
@@ -64,7 +64,7 @@ describe('getRequiredBlockConfirmations', () => {
   })
   test('Should call to get events if block number was not included in the snapshot', async () => {
     const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => [
+      getPastEvents: jest.fn().mockImplementation(async () => [
         {
           blockNumber: 9,
           returnValues: {
@@ -102,7 +102,7 @@ describe('getRequiredBlockConfirmations', () => {
   })
   test('Should use the most updated event', async () => {
     const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => [
+      getPastEvents: jest.fn().mockImplementation(async () => [
         {
           blockNumber: 9,
           returnValues: {
@@ -141,7 +141,7 @@ describe('getRequiredBlockConfirmations', () => {
 describe('getRequiredSignatures', () => {
   test('Should not call to get events if block number was included in the snapshot', async () => {
     const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => [])
+      getPastEvents: jest.fn().mockImplementation(async () => [])
     } as unknown) as Contract
 
     const snapshotProvider = ({
@@ -173,7 +173,7 @@ describe('getRequiredSignatures', () => {
   })
   test('Should call to get events if block number is higher than the snapshot block number', async () => {
     const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => [
+      getPastEvents: jest.fn().mockImplementation(async () => [
         {
           blockNumber: 15,
           returnValues: {
@@ -216,7 +216,7 @@ describe('getRequiredSignatures', () => {
   })
   test('Should use the most updated event before the block number', async () => {
     const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => [
+      getPastEvents: jest.fn().mockImplementation(async () => [
         {
           blockNumber: 15,
           returnValues: {
@@ -270,7 +270,7 @@ describe('getValidatorList', () => {
   test('Should return the current validator list if no events found', async () => {
     const currentValidators = [validator1, validator2, validator3]
     const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => []),
+      getPastEvents: jest.fn().mockImplementation(async () => []),
       methods: methodsBuilder(currentValidators)
     } as unknown) as Contract
 
@@ -301,7 +301,7 @@ describe('getValidatorList', () => {
   test('If validator was added later from snapshot it should not include it', async () => {
     const currentValidators = [validator1, validator2, validator3]
     const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => []),
+      getPastEvents: jest.fn().mockImplementation(async () => []),
       methods: methodsBuilder(currentValidators)
     } as unknown) as Contract
 
@@ -340,7 +340,7 @@ describe('getValidatorList', () => {
   test('If validator was added later from chain it should not include it', async () => {
     const currentValidators = [validator1, validator2, validator3]
     const contract = ({
-      getPastEvents: jest.fn().mockImplementation(event => {
+      getPastEvents: jest.fn().mockImplementation(async event => {
         if (event === 'ValidatorAdded') {
           return [
             {
@@ -385,7 +385,7 @@ describe('getValidatorList', () => {
   test('If validator was removed later from snapshot it should include it', async () => {
     const currentValidators = [validator1, validator2]
     const contract = ({
-      getPastEvents: jest.fn().mockImplementation(() => []),
+      getPastEvents: jest.fn().mockImplementation(async () => []),
       methods: methodsBuilder(currentValidators)
     } as unknown) as Contract
 
@@ -424,7 +424,7 @@ describe('getValidatorList', () => {
   test('If validator was removed later from chain it should include it', async () => {
     const currentValidators = [validator1, validator2]
     const contract = ({
-      getPastEvents: jest.fn().mockImplementation(event => {
+      getPastEvents: jest.fn().mockImplementation(async event => {
         if (event === 'ValidatorRemoved') {
           return [
             {

alm/src/utils/__tests__/explorer.test.ts

@@ -17,19 +17,33 @@ const otherAddress = '0xD4075FB57fCf038bFc702c915Ef9592534bED5c1'
 
 describe('getFailedTransactions', () => {
   test('should only return failed transactions', async () => {
-    const transactions = [{ isError: '0' }, { isError: '1' }, { isError: '0' }, { isError: '1' }, { isError: '1' }]
+    const to = otherAddress
+    const transactions = [
+      { isError: '0', to },
+      { isError: '1', to },
+      { isError: '0', to },
+      { isError: '1', to },
+      { isError: '1', to }
+    ]
 
     const fetchAccountTransactions = jest.fn().mockImplementation(() => transactions)
-    const result = await getFailedTransactions('', '', 0, 1, '', fetchAccountTransactions)
+    const result = await getFailedTransactions('', to, 0, 1, '', fetchAccountTransactions)
     expect(result.length).toEqual(3)
   })
 })
 describe('getSuccessTransactions', () => {
   test('should only return success transactions', async () => {
-    const transactions = [{ isError: '0' }, { isError: '1' }, { isError: '0' }, { isError: '1' }, { isError: '1' }]
+    const to = otherAddress
+    const transactions = [
+      { isError: '0', to },
+      { isError: '1', to },
+      { isError: '0', to },
+      { isError: '1', to },
+      { isError: '1', to }
+    ]
 
     const fetchAccountTransactions = jest.fn().mockImplementation(() => transactions)
-    const result = await getSuccessTransactions('', '', 0, 1, '', fetchAccountTransactions)
+    const result = await getSuccessTransactions('', to, 0, 1, '', fetchAccountTransactions)
     expect(result.length).toEqual(2)
   })
 })
@@ -74,8 +88,8 @@ describe('getExecutionFailedTransactionForMessage', () => {
         account: '',
         to: '',
         messageData,
-        startTimestamp: 0,
-        endTimestamp: 1
+        startBlock: 0,
+        endBlock: 1
       },
       fetchAccountTransactions
     )

alm/src/utils/__tests__/getConfirmationsForTx.test.ts

@@ -9,7 +9,7 @@ import { BasicConfirmationParam } from '../../hooks/useMessageConfirmations'
 
 jest.mock('../validatorConfirmationHelpers')
 
-const getValidatorSuccessTransaction = helpers.getValidatorSuccessTransaction as jest.Mock<any>
+const getSuccessExecutionTransaction = helpers.getSuccessExecutionTransaction as jest.Mock<any>
 const getValidatorConfirmation = helpers.getValidatorConfirmation as jest.Mock<any>
 const getValidatorFailedTransaction = helpers.getValidatorFailedTransaction as jest.Mock<any>
 const getValidatorPendingTransaction = helpers.getValidatorPendingTransaction as jest.Mock<any>
@@ -24,10 +24,17 @@ const validator1 = '0x45b96809336A8b714BFbdAB3E4B5e0fe5d839908'
 const validator2 = '0xAe8bFfc8BBc6AAa9E21ED1E4e4957fe798BEA25f'
 const validator3 = '0x285A6eB779be4db94dA65e2F3518B1c5F0f71244'
 const validatorList = [validator1, validator2, validator3]
-const bridgeContract = {} as Contract
-const confirmationContractMethod = () => {}
+const signature =
+  '0x519d704bceed17423daa79c20531cc34fc27a4be6e53fc5069a8023019188ca4519d704bceed17423daa79c20531cc34fc27a4be6e53fc5069a8023019188ca4'
+const bridgeContract = {
+  methods: {
+    signature: () => ({
+      call: () => signature
+    })
+  }
+} as Contract
 const requiredSignatures = 2
-const waitingBlocksResolved = true
+const isCancelled = () => false
 let subscriptions: Array<number> = []
 const timestamp = 1594045859
 const getFailedTransactions = (): Promise<APITransaction[]> => Promise.resolve([])
@@ -42,7 +49,7 @@ const unsubscribe = () => {
 
 beforeEach(() => {
   // Clear all instances and calls to constructor and all methods:
-  getValidatorSuccessTransaction.mockClear()
+  getSuccessExecutionTransaction.mockClear()
   getValidatorConfirmation.mockClear()
   getValidatorFailedTransaction.mockClear()
   getValidatorPendingTransaction.mockClear()
@@ -54,7 +61,7 @@ describe('getConfirmationsForTx', () => {
       validator,
       status: validator !== validator3 ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
     }))
-    getValidatorSuccessTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
+    getSuccessExecutionTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
       validator: validatorData.validator,
       status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
       txHash: '',
@@ -83,12 +90,12 @@ describe('getConfirmationsForTx', () => {
       web3,
       validatorList,
       bridgeContract,
-      confirmationContractMethod,
+      true,
       setResult,
       requiredSignatures,
       setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       getFailedTransactions,
       setFailedConfirmations,
@@ -102,9 +109,10 @@ describe('getConfirmationsForTx', () => {
     expect(subscriptions.length).toEqual(1)
     expect(setResult).toBeCalledTimes(2)
     expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
-    expect(setSignatureCollected).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
+    expect(setSignatureCollected).toBeCalledTimes(2)
     expect(setSignatureCollected.mock.calls[0][0]).toEqual(true)
+    expect(setSignatureCollected.mock.calls[1][0]).toEqual([signature, signature])
 
     expect(getValidatorFailedTransaction).toBeCalledTimes(1)
     expect(setFailedConfirmations).toBeCalledTimes(1)
@@ -114,14 +122,16 @@ describe('getConfirmationsForTx', () => {
     expect(setPendingConfirmations).toBeCalledTimes(1)
     expect(setPendingConfirmations.mock.calls[0][0]).toEqual(false)
 
-    expect(setResult.mock.calls[0][0]()).toEqual(
+    const res1 = setResult.mock.calls[0][0]()
+    const res2 = setResult.mock.calls[1][0](res1)
+    expect(res1).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
-        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.NOT_REQUIRED }
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
       ])
     )
-    expect(setResult.mock.calls[1][0]).toEqual(
+    expect(res2).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
@@ -134,7 +144,7 @@ describe('getConfirmationsForTx', () => {
       validator,
       status: validator === validator3 ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
     }))
-    getValidatorSuccessTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
+    getSuccessExecutionTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
       validator: validatorData.validator,
       status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
       txHash: '',
@@ -163,12 +173,12 @@ describe('getConfirmationsForTx', () => {
       web3,
       validatorList,
       bridgeContract,
-      confirmationContractMethod,
+      true,
       setResult,
       requiredSignatures,
       setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       getFailedTransactions,
       setFailedConfirmations,
@@ -179,9 +189,9 @@ describe('getConfirmationsForTx', () => {
 
     unsubscribe()
 
-    expect(setResult).toBeCalledTimes(2)
+    expect(setResult).toBeCalledTimes(1)
     expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
     expect(setSignatureCollected).toBeCalledTimes(1)
     expect(setSignatureCollected.mock.calls[0][0]).toEqual(false)
 
@@ -198,7 +208,7 @@ describe('getConfirmationsForTx', () => {
       validator,
       status: validator !== validator3 ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
     }))
-    getValidatorSuccessTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
+    getSuccessExecutionTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
       validator: validatorData.validator,
       status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
       txHash: validatorData.validator !== validator3 ? '0x123' : '',
@@ -227,12 +237,12 @@ describe('getConfirmationsForTx', () => {
       web3,
       validatorList,
       bridgeContract,
-      confirmationContractMethod,
+      true,
       setResult,
       requiredSignatures,
       setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       getFailedTransactions,
       setFailedConfirmations,
@@ -244,11 +254,12 @@ describe('getConfirmationsForTx', () => {
     unsubscribe()
 
     expect(subscriptions.length).toEqual(0)
-    expect(setResult).toBeCalledTimes(2)
+    expect(setResult).toBeCalledTimes(3)
     expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
-    expect(setSignatureCollected).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
+    expect(setSignatureCollected).toBeCalledTimes(2)
     expect(setSignatureCollected.mock.calls[0][0]).toEqual(true)
+    expect(setSignatureCollected.mock.calls[1][0]).toEqual([signature, signature])
 
     expect(getValidatorFailedTransaction).toBeCalledTimes(1)
     expect(setFailedConfirmations).toBeCalledTimes(1)
@@ -258,14 +269,24 @@ describe('getConfirmationsForTx', () => {
     expect(setPendingConfirmations).toBeCalledTimes(1)
     expect(setPendingConfirmations.mock.calls[0][0]).toEqual(false)
 
-    expect(setResult.mock.calls[0][0]()).toEqual(
+    const res1 = setResult.mock.calls[0][0]()
+    const res2 = setResult.mock.calls[1][0](res1)
+    const res3 = setResult.mock.calls[2][0](res2)
+    expect(res1).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
+      ])
+    )
+    expect(res2).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
         { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.NOT_REQUIRED }
       ])
     )
-    expect(setResult.mock.calls[1][0]).toEqual(
+    expect(res3).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
@@ -283,7 +304,7 @@ describe('getConfirmationsForTx', () => {
           ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS
           : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
     }))
-    getValidatorSuccessTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
+    getSuccessExecutionTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
       validator: validatorData.validator,
       status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
       txHash: validatorData.validator !== validator3 && validatorData.validator !== validator4 ? '0x123' : '',
@@ -315,12 +336,12 @@ describe('getConfirmationsForTx', () => {
       web3,
       validatorList,
       bridgeContract,
-      confirmationContractMethod,
+      true,
       setResult,
       requiredSignatures,
       setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       getFailedTransactions,
       setFailedConfirmations,
@@ -332,11 +353,12 @@ describe('getConfirmationsForTx', () => {
     unsubscribe()
 
     expect(subscriptions.length).toEqual(0)
-    expect(setResult).toBeCalledTimes(2)
+    expect(setResult).toBeCalledTimes(4)
     expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
-    expect(setSignatureCollected).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
+    expect(setSignatureCollected).toBeCalledTimes(2)
     expect(setSignatureCollected.mock.calls[0][0]).toEqual(true)
+    expect(setSignatureCollected.mock.calls[1][0]).toEqual([signature, signature])
 
     expect(getValidatorFailedTransaction).toBeCalledTimes(1)
     expect(setFailedConfirmations).toBeCalledTimes(1)
@@ -346,7 +368,27 @@ describe('getConfirmationsForTx', () => {
     expect(setPendingConfirmations).toBeCalledTimes(1)
     expect(setPendingConfirmations.mock.calls[0][0]).toEqual(false)
 
-    expect(setResult.mock.calls[0][0]()).toEqual(
+    const res1 = setResult.mock.calls[0][0]()
+    const res2 = setResult.mock.calls[1][0](res1)
+    const res3 = setResult.mock.calls[2][0](res2)
+    const res4 = setResult.mock.calls[3][0](res3)
+    expect(res1).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED },
+        { validator: validator4, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
+      ])
+    )
+    expect(res2).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
+        { validator: validator4, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
+      ])
+    )
+    expect(res3).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
@@ -354,7 +396,7 @@ describe('getConfirmationsForTx', () => {
         { validator: validator4, status: VALIDATOR_CONFIRMATION_STATUS.NOT_REQUIRED }
       ])
     )
-    expect(setResult.mock.calls[1][0]).toEqual(
+    expect(res4).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
@@ -372,7 +414,7 @@ describe('getConfirmationsForTx', () => {
       validator,
       status: validator === validator1 ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
     }))
-    getValidatorSuccessTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
+    getSuccessExecutionTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
       validator: validatorData.validator,
       status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
       txHash: validatorData.validator === validator1 ? '0x123' : '',
@@ -407,12 +449,12 @@ describe('getConfirmationsForTx', () => {
       web3,
       validatorList,
       bridgeContract,
-      confirmationContractMethod,
+      true,
       setResult,
       requiredSignatures,
       setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       getFailedTransactions,
       setFailedConfirmations,
@@ -423,9 +465,9 @@ describe('getConfirmationsForTx', () => {
 
     unsubscribe()
 
-    expect(setResult).toBeCalledTimes(2)
+    expect(setResult).toBeCalledTimes(4)
     expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
     expect(setSignatureCollected).toBeCalledTimes(1)
     expect(setSignatureCollected.mock.calls[0][0]).toEqual(false)
 
@@ -437,14 +479,32 @@ describe('getConfirmationsForTx', () => {
     expect(setPendingConfirmations).toBeCalledTimes(1)
     expect(setPendingConfirmations.mock.calls[0][0]).toEqual(true)
 
-    expect(setResult.mock.calls[0][0]()).toEqual(
+    const res1 = setResult.mock.calls[0][0]()
+    const res2 = setResult.mock.calls[1][0](res1)
+    const res3 = setResult.mock.calls[2][0](res2)
+    const res4 = setResult.mock.calls[3][0](res3)
+    expect(res1).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
+      ])
+    )
+    expect(res2).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.PENDING, txHash: '0x123', timestamp: 123 }
+      ])
+    )
+    expect(res3).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
         { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.PENDING, txHash: '0x123', timestamp: 123 }
       ])
     )
-    expect(setResult.mock.calls[1][0]).toEqual(
+    expect(res4).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
@@ -461,7 +521,7 @@ describe('getConfirmationsForTx', () => {
       validator,
       status: validator === validator1 ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
     }))
-    getValidatorSuccessTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
+    getSuccessExecutionTransaction.mockImplementation(() => async (validatorData: BasicConfirmationParam) => ({
       validator: validatorData.validator,
       status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
       txHash: validatorData.validator === validator1 ? '0x123' : '',
@@ -493,12 +553,12 @@ describe('getConfirmationsForTx', () => {
       web3,
       validatorList,
       bridgeContract,
-      confirmationContractMethod,
+      true,
       setResult,
       requiredSignatures,
       setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       getFailedTransactions,
       setFailedConfirmations,
@@ -510,9 +570,9 @@ describe('getConfirmationsForTx', () => {
     unsubscribe()
 
     expect(subscriptions.length).toEqual(0)
-    expect(setResult).toBeCalledTimes(2)
+    expect(setResult).toBeCalledTimes(3)
     expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
     expect(setSignatureCollected).toBeCalledTimes(1)
     expect(setSignatureCollected.mock.calls[0][0]).toEqual(false)
 
@@ -524,14 +584,24 @@ describe('getConfirmationsForTx', () => {
     expect(setPendingConfirmations).toBeCalledTimes(1)
     expect(setPendingConfirmations.mock.calls[0][0]).toEqual(false)
 
-    expect(setResult.mock.calls[0][0]()).toEqual(
+    const res1 = setResult.mock.calls[0][0]()
+    const res2 = setResult.mock.calls[1][0](res1)
+    const res3 = setResult.mock.calls[2][0](res2)
+    expect(res1).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
+      ])
+    )
+    expect(res2).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
         { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 }
       ])
     )
-    expect(setResult.mock.calls[1][0]).toEqual(
+    expect(res3).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
@@ -555,7 +625,7 @@ describe('getConfirmationsForTx', () => {
         status:
           validator !== validator2 ? VALIDATOR_CONFIRMATION_STATUS.SUCCESS : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED
       }))
-    getValidatorSuccessTransaction
+    getSuccessExecutionTransaction
       .mockImplementationOnce(() => async (validatorData: BasicConfirmationParam) => ({
         validator: validatorData.validator,
         status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
@@ -604,12 +674,12 @@ describe('getConfirmationsForTx', () => {
       web3,
       validatorList,
       bridgeContract,
-      confirmationContractMethod,
+      true,
       setResult,
       requiredSignatures,
       setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       getFailedTransactions,
       setFailedConfirmations,
@@ -620,9 +690,9 @@ describe('getConfirmationsForTx', () => {
 
     unsubscribe()
 
-    expect(setResult).toBeCalledTimes(2)
+    expect(setResult).toBeCalledTimes(4)
     expect(getValidatorConfirmation).toBeCalledTimes(1)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(1)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(1)
     expect(setSignatureCollected).toBeCalledTimes(1)
     expect(setSignatureCollected.mock.calls[0][0]).toEqual(false)
 
@@ -634,14 +704,32 @@ describe('getConfirmationsForTx', () => {
     expect(setPendingConfirmations).toBeCalledTimes(1)
     expect(setPendingConfirmations.mock.calls[0][0]).toEqual(true)
 
-    expect(setResult.mock.calls[0][0]()).toEqual(
+    const res1 = setResult.mock.calls[0][0]()
+    const res2 = setResult.mock.calls[1][0](res1)
+    const res3 = setResult.mock.calls[2][0](res2)
+    const res4 = setResult.mock.calls[3][0](res3)
+    expect(res1).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED }
+      ])
+    )
+    expect(res2).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.PENDING, txHash: '0x123', timestamp: 123 }
+      ])
+    )
+    expect(res3).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
         { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.PENDING, txHash: '0x123', timestamp: 123 }
       ])
     )
-    expect(setResult.mock.calls[1][0]).toEqual(
+    expect(res4).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
@@ -654,12 +742,12 @@ describe('getConfirmationsForTx', () => {
       web3,
       validatorList,
       bridgeContract,
-      confirmationContractMethod,
+      true,
       setResult,
       requiredSignatures,
       setSignatureCollected,
-      waitingBlocksResolved,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       getFailedTransactions,
       setFailedConfirmations,
@@ -670,12 +758,13 @@ describe('getConfirmationsForTx', () => {
 
     unsubscribe()
 
-    expect(setResult).toBeCalledTimes(4)
+    expect(setResult).toBeCalledTimes(7)
     expect(getValidatorConfirmation).toBeCalledTimes(2)
-    expect(getValidatorSuccessTransaction).toBeCalledTimes(2)
-    expect(setSignatureCollected).toBeCalledTimes(2)
+    expect(getSuccessExecutionTransaction).toBeCalledTimes(2)
+    expect(setSignatureCollected).toBeCalledTimes(3)
     expect(setSignatureCollected.mock.calls[0][0]).toEqual(false)
     expect(setSignatureCollected.mock.calls[1][0]).toEqual(true)
+    expect(setSignatureCollected.mock.calls[2][0]).toEqual([signature, signature])
 
     expect(getValidatorFailedTransaction).toBeCalledTimes(2)
     expect(setFailedConfirmations).toBeCalledTimes(2)
@@ -687,14 +776,24 @@ describe('getConfirmationsForTx', () => {
     expect(setPendingConfirmations.mock.calls[0][0]).toEqual(true)
     expect(setPendingConfirmations.mock.calls[1][0]).toEqual(false)
 
-    expect(setResult.mock.calls[2][0]()).toEqual(
+    const res5 = setResult.mock.calls[4][0](res4)
+    const res6 = setResult.mock.calls[5][0](res5)
+    const res7 = setResult.mock.calls[6][0](res6)
+    expect(res5).toEqual(
       expect.arrayContaining([
-        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS },
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
         { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS }
       ])
     )
-    expect(setResult.mock.calls[3][0]).toEqual(
+    expect(res6).toEqual(
+      expect.arrayContaining([
+        { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
+        { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },
+        { validator: validator3, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS }
+      ])
+    )
+    expect(res7).toEqual(
       expect.arrayContaining([
         { validator: validator1, status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS, txHash: '0x123', timestamp: 123 },
         { validator: validator2, status: VALIDATOR_CONFIRMATION_STATUS.FAILED, txHash: '0x123', timestamp: 123 },

alm/src/utils/__tests__/getFinalizationEvent.test.ts

@@ -4,7 +4,6 @@ import Web3 from 'web3'
 import { getFinalizationEvent } from '../getFinalizationEvent'
 import { VALIDATOR_CONFIRMATION_STATUS } from '../../config/constants'
 
-const eventName = 'RelayedMessage'
 const timestamp = 1594045859
 const validator1 = '0x45b96809336A8b714BFbdAB3E4B5e0fe5d839908'
 const txHash = '0xdab36c9210e7e45fb82af10ffe4960461e41661dce0c9cd36b2843adaa1df156'
@@ -20,12 +19,11 @@ const web3 = ({
     toChecksumAddress: (a: string) => a
   }
 } as unknown) as Web3
-const waitingBlocksResolved = true
 const message = {
   id: '0x123',
   data: '0x123456789'
 }
-const interval = 10000
+const isCancelled = () => false
 let subscriptions: Array<number> = []
 
 const event = {
@@ -50,7 +48,7 @@ beforeEach(() => {
 describe('getFinalizationEvent', () => {
   test('should get finalization event and not try to get failed or pending transactions', async () => {
     const contract = ({
-      getPastEvents: () => {
+      getPastEvents: async () => {
         return [event]
       }
     } as unknown) as Contract
@@ -61,22 +59,23 @@ describe('getFinalizationEvent', () => {
     const setFailedExecution = jest.fn()
     const getPendingExecution = jest.fn()
     const setPendingExecution = jest.fn()
+    const setExecutionEventsFetched = jest.fn()
 
     await getFinalizationEvent(
+      true,
       contract,
-      eventName,
       web3,
       setResult,
-      waitingBlocksResolved,
       message,
-      interval,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       collectedSignaturesEvent,
       getFailedExecution,
       setFailedExecution,
       getPendingExecution,
-      setPendingExecution
+      setPendingExecution,
+      setExecutionEventsFetched
     )
 
     unsubscribe()
@@ -99,7 +98,7 @@ describe('getFinalizationEvent', () => {
   })
   test('should retry to get finalization event and not try to get failed or pending transactions if foreign to home transaction', async () => {
     const contract = ({
-      getPastEvents: () => {
+      getPastEvents: async () => {
         return []
       }
     } as unknown) as Contract
@@ -110,22 +109,23 @@ describe('getFinalizationEvent', () => {
     const setFailedExecution = jest.fn()
     const getPendingExecution = jest.fn()
     const setPendingExecution = jest.fn()
+    const setExecutionEventsFetched = jest.fn()
 
     await getFinalizationEvent(
+      true,
       contract,
-      eventName,
       web3,
       setResult,
-      waitingBlocksResolved,
       message,
-      interval,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       collectedSignaturesEvent,
       getFailedExecution,
       setFailedExecution,
       getPendingExecution,
-      setPendingExecution
+      setPendingExecution,
+      setExecutionEventsFetched
     )
 
     unsubscribe()
@@ -141,7 +141,7 @@ describe('getFinalizationEvent', () => {
   })
   test('should retry to get finalization event and try to get failed and pending transactions if home to foreign transaction', async () => {
     const contract = ({
-      getPastEvents: () => {
+      getPastEvents: async () => {
         return []
       },
       options: {
@@ -159,22 +159,23 @@ describe('getFinalizationEvent', () => {
     const setFailedExecution = jest.fn()
     const getPendingExecution = jest.fn().mockResolvedValue([])
     const setPendingExecution = jest.fn()
+    const setExecutionEventsFetched = jest.fn()
 
     await getFinalizationEvent(
+      true,
       contract,
-      eventName,
       web3,
       setResult,
-      waitingBlocksResolved,
       message,
-      interval,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       collectedSignaturesEvent,
       getFailedExecution,
       setFailedExecution,
       getPendingExecution,
-      setPendingExecution
+      setPendingExecution,
+      setExecutionEventsFetched
     )
 
     unsubscribe()
@@ -190,7 +191,7 @@ describe('getFinalizationEvent', () => {
   })
   test('should retry to get finalization event and not to try to get failed transaction if pending transactions found if home to foreign transaction', async () => {
     const contract = ({
-      getPastEvents: () => {
+      getPastEvents: async () => {
         return []
       },
       options: {
@@ -208,22 +209,23 @@ describe('getFinalizationEvent', () => {
     const setFailedExecution = jest.fn()
     const getPendingExecution = jest.fn().mockResolvedValue([{ hash: txHash }])
     const setPendingExecution = jest.fn()
+    const setExecutionEventsFetched = jest.fn()
 
     await getFinalizationEvent(
+      true,
       contract,
-      eventName,
       web3,
       setResult,
-      waitingBlocksResolved,
       message,
-      interval,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       collectedSignaturesEvent,
       getFailedExecution,
       setFailedExecution,
       getPendingExecution,
-      setPendingExecution
+      setPendingExecution,
+      setExecutionEventsFetched
     )
 
     unsubscribe()
@@ -246,7 +248,7 @@ describe('getFinalizationEvent', () => {
   })
   test('should retry to get finalization event even if failed transaction found if home to foreign transaction', async () => {
     const contract = ({
-      getPastEvents: () => {
+      getPastEvents: async () => {
         return []
       },
       options: {
@@ -264,22 +266,23 @@ describe('getFinalizationEvent', () => {
     const setFailedExecution = jest.fn()
     const getPendingExecution = jest.fn().mockResolvedValue([])
     const setPendingExecution = jest.fn()
+    const setExecutionEventsFetched = jest.fn()
 
     await getFinalizationEvent(
+      true,
       contract,
-      eventName,
       web3,
       setResult,
-      waitingBlocksResolved,
       message,
-      interval,
-      subscriptions,
+      subscriptions.push.bind(subscriptions),
+      isCancelled,
       timestamp,
       collectedSignaturesEvent,
       getFailedExecution,
       setFailedExecution,
       getPendingExecution,
-      setPendingExecution
+      setPendingExecution,
+      setExecutionEventsFetched
     )
 
     unsubscribe()

alm/src/utils/contract.ts

@@ -1,18 +1,33 @@
 import { Contract } from 'web3-eth-contract'
 import { EventData } from 'web3-eth-contract'
 import { SnapshotProvider } from '../services/SnapshotProvider'
+import { getLogs } from './explorer'
+import Web3 from 'web3'
+
+const getPastEventsWithFallback = (
+  api: string,
+  web3: Web3 | null,
+  contract: Contract,
+  eventName: string,
+  options: any
+) =>
+  contract
+    .getPastEvents(eventName, options)
+    .catch(() => (api && web3 ? getLogs(api, web3, contract, eventName, options) : []))
 
 export const getRequiredBlockConfirmations = async (
   contract: Contract,
   blockNumber: number,
-  snapshotProvider: SnapshotProvider
+  snapshotProvider: SnapshotProvider,
+  web3: Web3 | null = null,
+  api: string = ''
 ) => {
   const eventsFromSnapshot = snapshotProvider.requiredBlockConfirmationEvents(blockNumber)
   const snapshotBlockNumber = snapshotProvider.snapshotBlockNumber()
 
   let contractEvents: EventData[] = []
   if (blockNumber > snapshotBlockNumber) {
-    contractEvents = await contract.getPastEvents('RequiredBlockConfirmationChanged', {
+    contractEvents = await getPastEventsWithFallback(api, web3, contract, 'RequiredBlockConfirmationChanged', {
       fromBlock: snapshotBlockNumber + 1,
       toBlock: blockNumber
     })
@@ -38,14 +53,16 @@ export const getValidatorAddress = (contract: Contract) => contract.methods.vali
 export const getRequiredSignatures = async (
   contract: Contract,
   blockNumber: number,
-  snapshotProvider: SnapshotProvider
+  snapshotProvider: SnapshotProvider,
+  web3: Web3 | null = null,
+  api: string = ''
 ) => {
   const eventsFromSnapshot = snapshotProvider.requiredSignaturesEvents(blockNumber)
   const snapshotBlockNumber = snapshotProvider.snapshotBlockNumber()
 
   let contractEvents: EventData[] = []
   if (blockNumber > snapshotBlockNumber) {
-    contractEvents = await contract.getPastEvents('RequiredSignaturesChanged', {
+    contractEvents = await getPastEventsWithFallback(api, web3, contract, 'RequiredSignaturesChanged', {
       fromBlock: snapshotBlockNumber + 1,
       toBlock: blockNumber
     })
@@ -59,7 +76,13 @@ export const getRequiredSignatures = async (
   return parseInt(requiredSignatures)
 }
 
-export const getValidatorList = async (contract: Contract, blockNumber: number, snapshotProvider: SnapshotProvider) => {
+export const getValidatorList = async (
+  contract: Contract,
+  blockNumber: number,
+  snapshotProvider: SnapshotProvider,
+  web3: Web3 | null = null,
+  api: string = ''
+) => {
   const addedEventsFromSnapshot = snapshotProvider.validatorAddedEvents(blockNumber)
   const removedEventsFromSnapshot = snapshotProvider.validatorRemovedEvents(blockNumber)
   const snapshotBlockNumber = snapshotProvider.snapshotBlockNumber()
@@ -67,10 +90,10 @@ export const getValidatorList = async (contract: Contract, blockNumber: number,
   const fromBlock = snapshotBlockNumber > blockNumber ? snapshotBlockNumber + 1 : blockNumber
   const [currentList, added, removed] = await Promise.all([
     contract.methods.validatorList().call(),
-    contract.getPastEvents('ValidatorAdded', {
+    getPastEventsWithFallback(api, web3, contract, 'ValidatorAdded', {
       fromBlock
     }),
-    contract.getPastEvents('ValidatorRemoved', {
+    getPastEventsWithFallback(api, web3, contract, 'ValidatorRemoved', {
       fromBlock
     })
   ])

alm/src/utils/executionWaitingForBlocks.ts

@@ -1,58 +0,0 @@
-import { BlockNumberProvider } from '../services/BlockNumberProvider'
-import { VALIDATOR_CONFIRMATION_STATUS } from '../config/constants'
-import { EventData } from 'web3-eth-contract'
-
-export const checkWaitingBlocksForExecution = async (
-  blockProvider: BlockNumberProvider,
-  interval: number,
-  targetBlock: number,
-  collectedSignaturesEvent: EventData,
-  setWaitingBlocksForExecution: Function,
-  setWaitingBlocksForExecutionResolved: Function,
-  setExecutionData: Function,
-  subscriptions: number[]
-) => {
-  const currentBlock = blockProvider.get()
-
-  if (currentBlock && currentBlock >= targetBlock) {
-    setExecutionData({
-      status: VALIDATOR_CONFIRMATION_STATUS.UNDEFINED,
-      validator: collectedSignaturesEvent.returnValues.authorityResponsibleForRelay,
-      txHash: '',
-      timestamp: 0,
-      executionResult: false
-    })
-    setWaitingBlocksForExecutionResolved(true)
-    setWaitingBlocksForExecution(false)
-    blockProvider.stop()
-  } else {
-    let nextInterval = interval
-    if (!currentBlock) {
-      nextInterval = 500
-    } else {
-      setWaitingBlocksForExecution(true)
-      setExecutionData({
-        status: VALIDATOR_CONFIRMATION_STATUS.WAITING,
-        validator: collectedSignaturesEvent.returnValues.authorityResponsibleForRelay,
-        txHash: '',
-        timestamp: 0,
-        executionResult: false
-      })
-    }
-    const timeoutId = setTimeout(
-      () =>
-        checkWaitingBlocksForExecution(
-          blockProvider,
-          interval,
-          targetBlock,
-          collectedSignaturesEvent,
-          setWaitingBlocksForExecution,
-          setWaitingBlocksForExecutionResolved,
-          setExecutionData,
-          subscriptions
-        ),
-      nextInterval
-    )
-    subscriptions.push(timeoutId)
-  }
-}

alm/src/utils/explorer.ts

@@ -1,10 +1,15 @@
 import {
+  BLOCK_RANGE,
   EXECUTE_AFFIRMATION_HASH,
   EXECUTE_SIGNATURES_HASH,
   FOREIGN_EXPLORER_API,
   HOME_EXPLORER_API,
+  MAX_TX_SEARCH_BLOCK_RANGE,
   SUBMIT_SIGNATURE_HASH
 } from '../config/constants'
+import { AbiItem } from 'web3-utils'
+import Web3 from 'web3'
+import { Contract } from 'web3-eth-contract'
 
 export interface APITransaction {
   timeStamp: string
@@ -12,6 +17,7 @@ export interface APITransaction {
   input: string
   to: string
   hash: string
+  blockNumber: string
 }
 
 export interface APIPendingTransaction {
@@ -27,110 +33,54 @@ export interface PendingTransactionsParams {
 
 export interface AccountTransactionsParams {
   account: string
-  to: string
-  startTimestamp: number
-  endTimestamp: number
+  startBlock: number
+  endBlock: number
   api: string
 }
 
-export interface GetFailedTransactionParams {
-  account: string
-  to: string
-  messageData: string
-  startTimestamp: number
-  endTimestamp: number
-}
-
 export interface GetPendingTransactionParams {
   account: string
   to: string
   messageData: string
 }
 
-export const fetchAccountTransactionsFromBlockscout = async ({
-  account,
-  to,
-  startTimestamp,
-  endTimestamp,
-  api
-}: AccountTransactionsParams): Promise<APITransaction[]> => {
-  const url = `${api}?module=account&action=txlist&address=${account}&filterby=from=${account}&to=${to}&starttimestamp=${startTimestamp}&endtimestamp=${endTimestamp}`
-
-  try {
-    const result = await fetch(url).then(res => res.json())
-    if (result.status === '0') {
-      return []
-    }
-
-    return result.result
-  } catch (e) {
-    console.log(e)
-    return []
-  }
+export interface GetTransactionParams extends GetPendingTransactionParams {
+  startBlock: number
+  endBlock: number
 }
 
-export const getBlockByTimestampUrl = (api: string, timestamp: number) =>
-  `${api}&module=block&action=getblocknobytime&timestamp=${timestamp}&closest=before`
+export const fetchAccountTransactions = async ({ account, startBlock, endBlock, api }: AccountTransactionsParams) => {
+  const url = new URL(api)
+  url.searchParams.append('module', 'account')
+  url.searchParams.append('action', 'txlist')
+  url.searchParams.append('address', account)
+  url.searchParams.append('filterby', 'from')
+  url.searchParams.append('startblock', startBlock.toString())
+  url.searchParams.append('endblock', endBlock.toString())
 
-export const fetchAccountTransactionsFromEtherscan = async ({
-  account,
-  to,
-  startTimestamp,
-  endTimestamp,
-  api
-}: AccountTransactionsParams): Promise<APITransaction[]> => {
-  const startBlockUrl = getBlockByTimestampUrl(api, startTimestamp)
-  const endBlockUrl = getBlockByTimestampUrl(api, endTimestamp)
-  let fromBlock = 0
-  let toBlock = 9999999999999
-  try {
-    const [fromBlockResult, toBlockResult] = await Promise.all([
-      fetch(startBlockUrl).then(res => res.json()),
-      fetch(endBlockUrl).then(res => res.json())
-    ])
+  const result = await fetch(url.toString()).then(res => res.json())
 
-    if (fromBlockResult.status !== '0') {
-      fromBlock = parseInt(fromBlockResult.result)
-    }
-
-    if (toBlockResult.status !== '0') {
-      toBlock = parseInt(toBlockResult.result)
-    }
-  } catch (e) {
-    console.log(e)
+  if (result.message === 'No transactions found') {
     return []
   }
 
-  const url = `${api}&module=account&action=txlist&address=${account}&startblock=${fromBlock}&endblock=${toBlock}`
-
-  try {
-    const result = await fetch(url).then(res => res.json())
-
-    if (result.status === '0') {
-      return []
-    }
-
-    const toAddressLowerCase = to.toLowerCase()
-    const transactions: APITransaction[] = result.result
-    return transactions.filter(t => t.to.toLowerCase() === toAddressLowerCase)
-  } catch (e) {
-    console.log(e)
-    return []
-  }
-}
-
-export const fetchAccountTransactions = (api: string) => {
-  return api.includes('blockscout') ? fetchAccountTransactionsFromBlockscout : fetchAccountTransactionsFromEtherscan
+  return result.result
 }
 
 export const fetchPendingTransactions = async ({
   account,
   api
 }: PendingTransactionsParams): Promise<APIPendingTransaction[]> => {
-  const url = `${api}?module=account&action=pendingtxlist&address=${account}`
+  if (!api.includes('blockscout')) {
+    return []
+  }
+  const url = new URL(api)
+  url.searchParams.append('module', 'account')
+  url.searchParams.append('action', 'pendingtxlist')
+  url.searchParams.append('address', account)
 
   try {
-    const result = await fetch(url).then(res => res.json())
+    const result = await fetch(url.toString()).then(res => res.json())
     if (result.status === '0') {
       return []
     }
@@ -141,30 +91,135 @@ export const fetchPendingTransactions = async ({
   }
 }
 
+export const getClosestBlockByTimestamp = async (api: string, timestamp: number): Promise<number> => {
+  if (api.includes('blockscout')) {
+    throw new Error('Blockscout does not support getblocknobytime')
+  }
+
+  const url = new URL(api)
+  url.searchParams.append('module', 'block')
+  url.searchParams.append('action', 'getblocknobytime')
+  url.searchParams.append('timestamp', timestamp.toString())
+  url.searchParams.append('closest', 'before')
+
+  const blockNumber = await fetch(url.toString()).then(res => res.json())
+
+  return parseInt(blockNumber.result)
+}
+
+// fast version of fetchAccountTransactions
+// sequentially fetches transactions in small batches
+// caches the result
+const transactionsCache: { [key: string]: { lastBlock: number; transactions: APITransaction[] } } = {}
+export const getAccountTransactions = async ({
+  account,
+  startBlock,
+  endBlock,
+  api
+}: AccountTransactionsParams): Promise<APITransaction[]> => {
+  const key = `${account}-${startBlock}-${api}`
+
+  // initialize empty cache if it doesn't exist yet
+  if (!transactionsCache[key]) {
+    transactionsCache[key] = { lastBlock: startBlock - 1, transactions: [] }
+  }
+
+  // if cache contains events up to block X,
+  // new batch is fetched for range [X + 1, X + 1 + BLOCK_RANGE]
+  const newStartBlock = transactionsCache[key].lastBlock + 1
+  const newEndBlock = newStartBlock + BLOCK_RANGE
+
+  // search for new transactions only if max allowed block range is not yet exceeded
+  if (newEndBlock <= startBlock + MAX_TX_SEARCH_BLOCK_RANGE) {
+    const newTransactions = await fetchAccountTransactions({
+      account,
+      startBlock: newStartBlock,
+      endBlock: newEndBlock,
+      api
+    })
+
+    const transactions = transactionsCache[key].transactions.concat(...newTransactions)
+
+    // cache updated transactions list
+    transactionsCache[key].transactions = transactions
+
+    // enbBlock is assumed to be the current block number of the chain
+    // if the whole range is finalized, last block can be safely updated to the end of the range
+    // this works even if there are no transactions in the list
+    if (newEndBlock < endBlock) {
+      transactionsCache[key].lastBlock = newEndBlock
+    } else if (transactions.length > 0) {
+      transactionsCache[key].lastBlock = parseInt(transactions[transactions.length - 1].blockNumber, 10)
+    }
+
+    return transactions
+  }
+
+  console.warn(`Reached max transaction searching range, returning previously cached transactions for ${account}`)
+  return transactionsCache[key].transactions
+}
+
+export const getLogs = async (
+  api: string,
+  web3: Web3,
+  contract: Contract,
+  event: string,
+  options: { fromBlock: number; toBlock: number | 'latest'; topics: (string | null)[] }
+) => {
+  const abi = contract.options.jsonInterface.find((abi: AbiItem) => abi.type === 'event' && abi.name === event)!
+
+  const url = new URL(api)
+  url.searchParams.append('module', 'logs')
+  url.searchParams.append('action', 'getLogs')
+  url.searchParams.append('address', contract.options.address)
+  url.searchParams.append('fromBlock', options.fromBlock.toString())
+  url.searchParams.append('toBlock', (options.toBlock || 'latest').toString())
+
+  const topics = [web3.eth.abi.encodeEventSignature(abi), ...(options.topics || [])]
+  for (let i = 0; i < topics.length; i++) {
+    if (topics[i] !== null) {
+      url.searchParams.append(`topic${i}`, topics[i] as string)
+      for (let j = 0; j < i; j++) {
+        url.searchParams.append(`topic${j}_${i}_opr`, 'and')
+      }
+    }
+  }
+
+  const logs = await fetch(url.toString()).then(res => res.json())
+
+  return logs.result.map((log: any) => ({
+    transactionHash: log.transactionHash,
+    blockNumber: parseInt(log.blockNumber.slice(2), 16),
+    returnValues: web3.eth.abi.decodeLog(abi.inputs!, log.data, log.topics.slice(1))
+  }))
+}
+
+const filterReceiver = (to: string) => (tx: APITransaction) => tx.to.toLowerCase() === to.toLowerCase()
+
 export const getFailedTransactions = async (
   account: string,
   to: string,
-  startTimestamp: number,
-  endTimestamp: number,
+  startBlock: number,
+  endBlock: number,
   api: string,
-  fetchAccountTransactions: (args: AccountTransactionsParams) => Promise<APITransaction[]>
+  getAccountTransactionsMethod = getAccountTransactions
 ): Promise<APITransaction[]> => {
-  const transactions = await fetchAccountTransactions({ account, to, startTimestamp, endTimestamp, api })
+  const transactions = await getAccountTransactionsMethod({ account, startBlock, endBlock, api })
 
-  return transactions.filter(t => t.isError !== '0')
+  return transactions.filter(t => t.isError !== '0').filter(filterReceiver(to))
 }
 
 export const getSuccessTransactions = async (
   account: string,
   to: string,
-  startTimestamp: number,
-  endTimestamp: number,
+  startBlock: number,
+  endBlock: number,
   api: string,
-  fetchAccountTransactions: (args: AccountTransactionsParams) => Promise<APITransaction[]>
+  getAccountTransactionsMethod = getAccountTransactions
 ): Promise<APITransaction[]> => {
-  const transactions = await fetchAccountTransactions({ account, to, startTimestamp, endTimestamp, api })
+  const transactions = await getAccountTransactionsMethod({ account, startBlock, endBlock, api })
 
-  return transactions.filter(t => t.isError === '0')
+  return transactions.filter(t => t.isError === '0').filter(filterReceiver(to))
 }
 
 export const filterValidatorSignatureTransaction = (
@@ -183,17 +238,10 @@ export const getValidatorFailedTransactionsForMessage = async ({
   account,
   to,
   messageData,
-  startTimestamp,
-  endTimestamp
-}: GetFailedTransactionParams): Promise<APITransaction[]> => {
-  const failedTransactions = await getFailedTransactions(
-    account,
-    to,
-    startTimestamp,
-    endTimestamp,
-    HOME_EXPLORER_API,
-    fetchAccountTransactionsFromBlockscout
-  )
+  startBlock,
+  endBlock
+}: GetTransactionParams): Promise<APITransaction[]> => {
+  const failedTransactions = await getFailedTransactions(account, to, startBlock, endBlock, HOME_EXPLORER_API)
 
   return filterValidatorSignatureTransaction(failedTransactions, messageData)
 }
@@ -202,33 +250,19 @@ export const getValidatorSuccessTransactionsForMessage = async ({
   account,
   to,
   messageData,
-  startTimestamp,
-  endTimestamp
-}: GetFailedTransactionParams): Promise<APITransaction[]> => {
-  const transactions = await getSuccessTransactions(
-    account,
-    to,
-    startTimestamp,
-    endTimestamp,
-    HOME_EXPLORER_API,
-    fetchAccountTransactionsFromBlockscout
-  )
+  startBlock,
+  endBlock
+}: GetTransactionParams): Promise<APITransaction[]> => {
+  const transactions = await getSuccessTransactions(account, to, startBlock, endBlock, HOME_EXPLORER_API)
 
   return filterValidatorSignatureTransaction(transactions, messageData)
 }
 
 export const getExecutionFailedTransactionForMessage = async (
-  { account, to, messageData, startTimestamp, endTimestamp }: GetFailedTransactionParams,
+  { account, to, messageData, startBlock, endBlock }: GetTransactionParams,
   getFailedTransactionsMethod = getFailedTransactions
 ): Promise<APITransaction[]> => {
-  const failedTransactions = await getFailedTransactionsMethod(
-    account,
-    to,
-    startTimestamp,
-    endTimestamp,
-    FOREIGN_EXPLORER_API,
-    fetchAccountTransactions(FOREIGN_EXPLORER_API)
-  )
+  const failedTransactions = await getFailedTransactionsMethod(account, to, startBlock, endBlock, FOREIGN_EXPLORER_API)
 
   const messageDataValue = messageData.replace('0x', '')
   return failedTransactions.filter(t => t.input.includes(EXECUTE_SIGNATURES_HASH) && t.input.includes(messageDataValue))

alm/src/utils/getCollectedSignaturesEvent.ts

@@ -1,53 +0,0 @@
-import Web3 from 'web3'
-import { Contract, EventData } from 'web3-eth-contract'
-import { homeBlockNumberProvider } from '../services/BlockNumberProvider'
-import { BLOCK_RANGE } from '../config/constants'
-
-export const getCollectedSignaturesEvent = async (
-  web3: Maybe<Web3>,
-  contract: Maybe<Contract>,
-  fromBlock: number,
-  toBlock: number,
-  messageHash: string,
-  setCollectedSignaturesEvent: Function,
-  subscriptions: number[]
-) => {
-  if (!web3 || !contract) return
-  const currentBlock = homeBlockNumberProvider.get()
-
-  let events: EventData[] = []
-  let securedToBlock = toBlock
-  if (currentBlock) {
-    // prevent errors if the toBlock parameter is bigger than the latest
-    securedToBlock = toBlock >= currentBlock ? currentBlock : toBlock
-    events = await contract.getPastEvents('CollectedSignatures', {
-      fromBlock,
-      toBlock: securedToBlock
-    })
-  }
-
-  const filteredEvents = events.filter(e => e.returnValues.messageHash === messageHash)
-
-  if (filteredEvents.length) {
-    const event = filteredEvents[0]
-    setCollectedSignaturesEvent(event)
-    homeBlockNumberProvider.stop()
-  } else {
-    const newFromBlock = currentBlock ? securedToBlock : fromBlock
-    const newToBlock = currentBlock ? toBlock + BLOCK_RANGE : toBlock
-    const timeoutId = setTimeout(
-      () =>
-        getCollectedSignaturesEvent(
-          web3,
-          contract,
-          newFromBlock,
-          newToBlock,
-          messageHash,
-          setCollectedSignaturesEvent,
-          subscriptions
-        ),
-      500
-    )
-    subscriptions.push(timeoutId)
-  }
-}

alm/src/utils/getConfirmationsForTx.ts

@@ -1,82 +1,91 @@
 import Web3 from 'web3'
 import { Contract } from 'web3-eth-contract'
 import { HOME_RPC_POLLING_INTERVAL, VALIDATOR_CONFIRMATION_STATUS } from '../config/constants'
-import {
-  GetFailedTransactionParams,
-  APITransaction,
-  APIPendingTransaction,
-  GetPendingTransactionParams
-} from './explorer'
+import { GetTransactionParams, APITransaction, APIPendingTransaction, GetPendingTransactionParams } from './explorer'
+import { getAffirmationsSigned, getMessagesSigned } from './contract'
 import {
   getValidatorConfirmation,
   getValidatorFailedTransaction,
   getValidatorPendingTransaction,
-  getValidatorSuccessTransaction
+  getSuccessExecutionTransaction
 } from './validatorConfirmationHelpers'
-import { ConfirmationParam } from '../hooks/useMessageConfirmations'
+import { BasicConfirmationParam, ConfirmationParam } from '../hooks/useMessageConfirmations'
+
+const mergeConfirmations = (oldConfirmations: BasicConfirmationParam[], newConfirmations: BasicConfirmationParam[]) => {
+  const confirmations = [...oldConfirmations]
+  newConfirmations.forEach(validatorData => {
+    const index = confirmations.findIndex(e => e.validator === validatorData.validator)
+    const currentStatus = confirmations[index].status
+    const newStatus = validatorData.status
+    if (
+      (validatorData as ConfirmationParam).txHash ||
+      (newStatus !== currentStatus && newStatus !== VALIDATOR_CONFIRMATION_STATUS.UNDEFINED)
+    ) {
+      confirmations[index] = validatorData
+    }
+  })
+  return confirmations
+}
 
 export const getConfirmationsForTx = async (
   messageData: string,
-  web3: Maybe<Web3>,
+  web3: Web3,
   validatorList: string[],
-  bridgeContract: Maybe<Contract>,
-  confirmationContractMethod: Function,
+  bridgeContract: Contract,
+  fromHome: boolean,
   setResult: Function,
   requiredSignatures: number,
   setSignatureCollected: Function,
-  waitingBlocksResolved: boolean,
-  subscriptions: number[],
-  timestamp: number,
-  getFailedTransactions: (args: GetFailedTransactionParams) => Promise<APITransaction[]>,
+  setTimeoutId: (timeoutId: number) => void,
+  isCancelled: () => boolean,
+  startBlock: number,
+  getFailedTransactions: (args: GetTransactionParams) => Promise<APITransaction[]>,
   setFailedConfirmations: Function,
   getPendingTransactions: (args: GetPendingTransactionParams) => Promise<APIPendingTransaction[]>,
   setPendingConfirmations: Function,
-  getSuccessTransactions: (args: GetFailedTransactionParams) => Promise<APITransaction[]>
+  getSuccessTransactions: (args: GetTransactionParams) => Promise<APITransaction[]>
 ) => {
-  if (!web3 || !validatorList || !validatorList.length || !bridgeContract || !waitingBlocksResolved) return
+  const confirmationContractMethod = fromHome ? getMessagesSigned : getAffirmationsSigned
 
-  // If all the information was not collected, then it should retry
-  let shouldRetry = false
   const hashMsg = web3.utils.soliditySha3Raw(messageData)
   let validatorConfirmations = await Promise.all(
     validatorList.map(getValidatorConfirmation(web3, hashMsg, bridgeContract, confirmationContractMethod))
   )
 
-  const successConfirmations = validatorConfirmations.filter(c => c.status === VALIDATOR_CONFIRMATION_STATUS.SUCCESS)
-
-  setResult((prevConfirmations: ConfirmationParam[]) => {
-    if (prevConfirmations && prevConfirmations.length) {
-      successConfirmations.forEach(validatorData => {
-        const index = prevConfirmations.findIndex(e => e.validator === validatorData.validator)
-        validatorConfirmations[index] = validatorData
-      })
-      return prevConfirmations
-    } else {
-      return validatorConfirmations
+  const updateConfirmations = (confirmations: BasicConfirmationParam[]) => {
+    if (confirmations.length === 0) {
+      return
     }
-  })
+    validatorConfirmations = mergeConfirmations(validatorConfirmations, confirmations)
+    setResult((currentConfirmations: BasicConfirmationParam[]) => {
+      if (currentConfirmations && currentConfirmations.length) {
+        return mergeConfirmations(currentConfirmations, confirmations)
+      }
+      return confirmations
+    })
+  }
 
+  const successConfirmations = validatorConfirmations.filter(c => c.status === VALIDATOR_CONFIRMATION_STATUS.SUCCESS)
   const notSuccessConfirmations = validatorConfirmations.filter(c => c.status !== VALIDATOR_CONFIRMATION_STATUS.SUCCESS)
+  const hasEnoughSignatures = successConfirmations.length === requiredSignatures
+
+  updateConfirmations(validatorConfirmations)
+  setSignatureCollected(hasEnoughSignatures)
 
   // If signatures not collected, look for pending transactions
-  let pendingConfirmationsResult = false
-  if (successConfirmations.length !== requiredSignatures) {
+  if (!hasEnoughSignatures) {
     // Check if confirmation is pending
     const validatorPendingConfirmationsChecks = await Promise.all(
       notSuccessConfirmations.map(getValidatorPendingTransaction(bridgeContract, messageData, getPendingTransactions))
     )
+
     const validatorPendingConfirmations = validatorPendingConfirmationsChecks.filter(
       c => c.status === VALIDATOR_CONFIRMATION_STATUS.PENDING
     )
-
-    validatorPendingConfirmations.forEach(validatorData => {
-      const index = validatorConfirmations.findIndex(e => e.validator === validatorData.validator)
-      validatorConfirmations[index] = validatorData
-    })
-
-    if (validatorPendingConfirmations.length > 0) {
-      pendingConfirmationsResult = true
-    }
+    updateConfirmations(validatorPendingConfirmations)
+    setPendingConfirmations(validatorPendingConfirmations.length > 0)
+  } else {
+    setPendingConfirmations(false)
   }
 
   const undefinedConfirmations = validatorConfirmations.filter(
@@ -84,99 +93,79 @@ export const getConfirmationsForTx = async (
   )
 
   // Check if confirmation failed
-  let failedConfirmationsResult = false
   const validatorFailedConfirmationsChecks = await Promise.all(
     undefinedConfirmations.map(
-      getValidatorFailedTransaction(bridgeContract, messageData, timestamp, getFailedTransactions)
+      getValidatorFailedTransaction(bridgeContract, messageData, startBlock, getFailedTransactions)
     )
   )
   const validatorFailedConfirmations = validatorFailedConfirmationsChecks.filter(
     c => c.status === VALIDATOR_CONFIRMATION_STATUS.FAILED
   )
-  validatorFailedConfirmations.forEach(validatorData => {
-    const index = validatorConfirmations.findIndex(e => e.validator === validatorData.validator)
-    validatorConfirmations[index] = validatorData
-  })
-  const messageConfirmationsFailed = validatorFailedConfirmations.length > validatorList.length - requiredSignatures
-  if (messageConfirmationsFailed) {
-    failedConfirmationsResult = true
-  }
+  setFailedConfirmations(validatorFailedConfirmations.length > validatorList.length - requiredSignatures)
+  updateConfirmations(validatorFailedConfirmations)
 
   const missingConfirmations = validatorConfirmations.filter(
     c => c.status === VALIDATOR_CONFIRMATION_STATUS.UNDEFINED || c.status === VALIDATOR_CONFIRMATION_STATUS.PENDING
   )
 
-  if (successConfirmations.length !== requiredSignatures && missingConfirmations.length > 0) {
-    shouldRetry = true
-  }
-
-  let signatureCollectedResult = false
-  if (successConfirmations.length === requiredSignatures) {
+  if (hasEnoughSignatures) {
     // If signatures collected, it should set other signatures not found as not required
     const notRequiredConfirmations = missingConfirmations.map(c => ({
       validator: c.validator,
       status: VALIDATOR_CONFIRMATION_STATUS.NOT_REQUIRED
     }))
+    updateConfirmations(notRequiredConfirmations)
 
-    notRequiredConfirmations.forEach(validatorData => {
-      const index = validatorConfirmations.findIndex(e => e.validator === validatorData.validator)
-      validatorConfirmations[index] = validatorData
-    })
-    signatureCollectedResult = true
+    if (fromHome) {
+      // fetch collected signatures for possible manual processing
+      setSignatureCollected(
+        await Promise.all(
+          Array.from(Array(requiredSignatures).keys()).map(i => bridgeContract.methods.signature(hashMsg, i).call())
+        )
+      )
+    }
   }
 
   // get transactions from success signatures
   const successConfirmationWithData = await Promise.all(
-    validatorConfirmations
-      .filter(c => c.status === VALIDATOR_CONFIRMATION_STATUS.SUCCESS)
-      .map(getValidatorSuccessTransaction(bridgeContract, messageData, timestamp, getSuccessTransactions))
+    successConfirmations.map(
+      getSuccessExecutionTransaction(web3, bridgeContract, fromHome, messageData, startBlock, getSuccessTransactions)
+    )
   )
 
   const successConfirmationWithTxFound = successConfirmationWithData.filter(v => v.txHash !== '')
+  updateConfirmations(successConfirmationWithTxFound)
 
-  const updatedValidatorConfirmations = [...validatorConfirmations]
-
-  if (successConfirmationWithTxFound.length > 0) {
-    successConfirmationWithTxFound.forEach(validatorData => {
-      const index = updatedValidatorConfirmations.findIndex(e => e.validator === validatorData.validator)
-      updatedValidatorConfirmations[index] = validatorData
-    })
-  }
-
-  // Set results
-  setResult(updatedValidatorConfirmations)
-  setFailedConfirmations(failedConfirmationsResult)
-  setPendingConfirmations(pendingConfirmationsResult)
-  setSignatureCollected(signatureCollectedResult)
-
-  // Retry if not all transaction were found for validator confirmations
-  if (successConfirmationWithTxFound.length < successConfirmationWithData.length) {
-    shouldRetry = true
-  }
-
-  if (shouldRetry) {
-    const timeoutId = setTimeout(
-      () =>
-        getConfirmationsForTx(
-          messageData,
-          web3,
-          validatorList,
-          bridgeContract,
-          confirmationContractMethod,
-          setResult,
-          requiredSignatures,
-          setSignatureCollected,
-          waitingBlocksResolved,
-          subscriptions,
-          timestamp,
-          getFailedTransactions,
-          setFailedConfirmations,
-          getPendingTransactions,
-          setPendingConfirmations,
-          getSuccessTransactions
-        ),
-      HOME_RPC_POLLING_INTERVAL
-    )
-    subscriptions.push(timeoutId)
+  // retry if not all signatures are collected and some confirmations are still missing
+  // or some success transactions were not fetched successfully
+  if (
+    (!hasEnoughSignatures && missingConfirmations.length > 0) ||
+    successConfirmationWithTxFound.length < successConfirmationWithData.length
+  ) {
+    if (!isCancelled()) {
+      const timeoutId = setTimeout(
+        () =>
+          getConfirmationsForTx(
+            messageData,
+            web3,
+            validatorList,
+            bridgeContract,
+            fromHome,
+            setResult,
+            requiredSignatures,
+            setSignatureCollected,
+            setTimeoutId,
+            isCancelled,
+            startBlock,
+            getFailedTransactions,
+            setFailedConfirmations,
+            getPendingTransactions,
+            setPendingConfirmations,
+            getSuccessTransactions
+          ),
+        HOME_RPC_POLLING_INTERVAL
+      )
+      setTimeoutId(timeoutId)
+    }
   }
 }

alm/src/utils/getFinalizationEvent.ts

@@ -1,40 +1,51 @@
 import { Contract, EventData } from 'web3-eth-contract'
 import Web3 from 'web3'
-import { CACHE_KEY_EXECUTION_FAILED, THREE_DAYS_TIMESTAMP, VALIDATOR_CONFIRMATION_STATUS } from '../config/constants'
+import {
+  CACHE_KEY_EXECUTION_FAILED,
+  FOREIGN_EXPLORER_API,
+  FOREIGN_RPC_POLLING_INTERVAL,
+  HOME_EXPLORER_API,
+  HOME_RPC_POLLING_INTERVAL,
+  VALIDATOR_CONFIRMATION_STATUS
+} from '../config/constants'
 import { ExecutionData } from '../hooks/useMessageConfirmations'
 import {
   APIPendingTransaction,
   APITransaction,
-  GetFailedTransactionParams,
-  GetPendingTransactionParams
+  GetTransactionParams,
+  GetPendingTransactionParams,
+  getLogs
 } from './explorer'
 import { getBlock, MessageObject } from './web3'
 import validatorsCache from '../services/ValidatorsCache'
+import { foreignBlockNumberProvider, homeBlockNumberProvider } from '../services/BlockNumberProvider'
 
-export const getFinalizationEvent = async (
-  contract: Maybe<Contract>,
+const getPastEventsWithFallback = (api: string, web3: Web3, contract: Contract, eventName: string, options: any) =>
+  contract.getPastEvents(eventName, options).catch(
+    () =>
+      api
+        ? getLogs(api, web3, contract, eventName, {
+            fromBlock: options.fromBlock,
+            toBlock: options.toBlock,
+            topics: [null, null, options.filter.messageId]
+          })
+        : []
+  )
+
+export const getSuccessExecutionData = async (
+  contract: Contract,
   eventName: string,
-  web3: Maybe<Web3>,
-  setResult: React.Dispatch<React.SetStateAction<ExecutionData>>,
-  waitingBlocksResolved: boolean,
-  message: MessageObject,
-  interval: number,
-  subscriptions: number[],
-  timestamp: number,
-  collectedSignaturesEvent: Maybe<EventData>,
-  getFailedExecution: (args: GetFailedTransactionParams) => Promise<APITransaction[]>,
-  setFailedExecution: Function,
-  getPendingExecution: (args: GetPendingTransactionParams) => Promise<APIPendingTransaction[]>,
-  setPendingExecution: Function
+  web3: Web3,
+  messageId: string,
+  api: string = ''
 ) => {
-  if (!contract || !web3 || !waitingBlocksResolved) return
   // Since it filters by the message id, only one event will be fetched
   // so there is no need to limit the range of the block to reduce the network traffic
-  const events: EventData[] = await contract.getPastEvents(eventName, {
+  const events: EventData[] = await getPastEventsWithFallback(api, web3, contract, eventName, {
     fromBlock: 0,
     toBlock: 'latest',
     filter: {
-      messageId: message.id
+      messageId
     }
   })
   if (events.length > 0) {
@@ -47,14 +58,42 @@ export const getFinalizationEvent = async (
     const blockTimestamp = typeof block.timestamp === 'string' ? parseInt(block.timestamp) : block.timestamp
     const validatorAddress = web3.utils.toChecksumAddress(txReceipt.from)
 
-    setResult({
+    return {
       status: VALIDATOR_CONFIRMATION_STATUS.SUCCESS,
       validator: validatorAddress,
       txHash: event.transactionHash,
       timestamp: blockTimestamp,
       executionResult: event.returnValues.status
-    })
+    }
+  }
+  return null
+}
+
+export const getFinalizationEvent = async (
+  fromHome: boolean,
+  contract: Contract,
+  web3: Web3,
+  setResult: React.Dispatch<React.SetStateAction<ExecutionData>>,
+  message: MessageObject,
+  setTimeoutId: (timeoutId: number) => void,
+  isCancelled: () => boolean,
+  startBlock: number,
+  collectedSignaturesEvent: Maybe<EventData>,
+  getFailedExecution: (args: GetTransactionParams) => Promise<APITransaction[]>,
+  setFailedExecution: Function,
+  getPendingExecution: (args: GetPendingTransactionParams) => Promise<APIPendingTransaction[]>,
+  setPendingExecution: Function,
+  setExecutionEventsFetched: Function
+) => {
+  const eventName = fromHome ? 'RelayedMessage' : 'AffirmationCompleted'
+  const api = fromHome ? FOREIGN_EXPLORER_API : HOME_EXPLORER_API
+
+  const successExecutionData = await getSuccessExecutionData(contract, eventName, web3, message.id, api)
+
+  if (successExecutionData) {
+    setResult(successExecutionData)
   } else {
+    setExecutionEventsFetched(true)
     // If event is defined, it means it is a message from Home to Foreign
     if (collectedSignaturesEvent) {
       const validator = collectedSignaturesEvent.returnValues.authorityResponsibleForRelay
@@ -82,14 +121,15 @@ export const getFinalizationEvent = async (
       } else {
         const validatorExecutionCacheKey = `${CACHE_KEY_EXECUTION_FAILED}${validator}-${message.id}`
         const failedFromCache = validatorsCache.get(validatorExecutionCacheKey)
+        const blockProvider = fromHome ? foreignBlockNumberProvider : homeBlockNumberProvider
 
         if (!failedFromCache) {
           const failedTransactions = await getFailedExecution({
             account: validator,
             to: contract.options.address,
             messageData: message.data,
-            startTimestamp: timestamp,
-            endTimestamp: timestamp + THREE_DAYS_TIMESTAMP
+            startBlock,
+            endBlock: blockProvider.get() || 0
           })
 
           if (failedTransactions.length > 0) {
@@ -112,26 +152,28 @@ export const getFinalizationEvent = async (
       }
     }
 
-    const timeoutId = setTimeout(
-      () =>
-        getFinalizationEvent(
-          contract,
-          eventName,
-          web3,
-          setResult,
-          waitingBlocksResolved,
-          message,
-          interval,
-          subscriptions,
-          timestamp,
-          collectedSignaturesEvent,
-          getFailedExecution,
-          setFailedExecution,
-          getPendingExecution,
-          setPendingExecution
-        ),
-      interval
-    )
-    subscriptions.push(timeoutId)
+    if (!isCancelled()) {
+      const timeoutId = setTimeout(
+        () =>
+          getFinalizationEvent(
+            fromHome,
+            contract,
+            web3,
+            setResult,
+            message,
+            setTimeoutId,
+            isCancelled,
+            startBlock,
+            collectedSignaturesEvent,
+            getFailedExecution,
+            setFailedExecution,
+            getPendingExecution,
+            setPendingExecution,
+            setExecutionEventsFetched
+          ),
+        fromHome ? FOREIGN_RPC_POLLING_INTERVAL : HOME_RPC_POLLING_INTERVAL
+      )
+      setTimeoutId(timeoutId)
+    }
   }
 }

alm/src/utils/signatureWaitingForBlocks.ts

@@ -1,50 +0,0 @@
-import { VALIDATOR_CONFIRMATION_STATUS } from '../config/constants'
-import { BlockNumberProvider } from '../services/BlockNumberProvider'
-
-export const checkSignaturesWaitingForBLocks = async (
-  targetBlock: number,
-  setWaitingStatus: Function,
-  setWaitingBlocksResolved: Function,
-  validatorList: string[],
-  setConfirmations: Function,
-  blockProvider: BlockNumberProvider,
-  interval: number,
-  subscriptions: number[]
-) => {
-  const currentBlock = blockProvider.get()
-
-  if (currentBlock && currentBlock >= targetBlock) {
-    setWaitingBlocksResolved(true)
-    setWaitingStatus(false)
-    blockProvider.stop()
-  } else {
-    let nextInterval = interval
-    if (!currentBlock) {
-      nextInterval = 500
-    } else {
-      const validatorsWaiting = validatorList.map(validator => {
-        return {
-          validator,
-          status: VALIDATOR_CONFIRMATION_STATUS.WAITING
-        }
-      })
-      setWaitingStatus(true)
-      setConfirmations(validatorsWaiting)
-    }
-    const timeoutId = setTimeout(
-      () =>
-        checkSignaturesWaitingForBLocks(
-          targetBlock,
-          setWaitingStatus,
-          setWaitingBlocksResolved,
-          validatorList,
-          setConfirmations,
-          blockProvider,
-          interval,
-          subscriptions
-        ),
-      nextInterval
-    )
-    subscriptions.push(timeoutId)
-  }
-}

alm/src/utils/signatures.ts

@@ -0,0 +1,26 @@
+import Web3 from 'web3'
+
+function strip0x(s: string) {
+  return Web3.utils.isHexStrict(s) ? s.substr(2) : s
+}
+
+export interface Signature {
+  v: string
+  r: string
+  s: string
+}
+
+export function signatureToVRS(rawSignature: string): Signature {
+  const signature = strip0x(rawSignature)
+  const v = signature.substr(64 * 2)
+  const r = signature.substr(0, 32 * 2)
+  const s = signature.substr(32 * 2, 32 * 2)
+  return { v, r, s }
+}
+
+export function packSignatures(array: Array<Signature>): string {
+  const length = strip0x(Web3.utils.toHex(array.length))
+  const msgLength = length.length === 1 ? `0${length}` : length
+  const [v, r, s] = array.reduce(([vs, rs, ss], { v, r, s }) => [vs + v, rs + r, ss + s], ['', '', ''])
+  return `0x${msgLength}${v}${r}${s}`
+}

alm/src/utils/validatorConfirmationHelpers.ts

@@ -2,18 +2,9 @@ import Web3 from 'web3'
 import { Contract } from 'web3-eth-contract'
 import { BasicConfirmationParam, ConfirmationParam } from '../hooks/useMessageConfirmations'
 import validatorsCache from '../services/ValidatorsCache'
-import {
-  CACHE_KEY_FAILED,
-  CACHE_KEY_SUCCESS,
-  ONE_DAY_TIMESTAMP,
-  VALIDATOR_CONFIRMATION_STATUS
-} from '../config/constants'
-import {
-  APIPendingTransaction,
-  APITransaction,
-  GetFailedTransactionParams,
-  GetPendingTransactionParams
-} from './explorer'
+import { CACHE_KEY_FAILED, CACHE_KEY_SUCCESS, VALIDATOR_CONFIRMATION_STATUS } from '../config/constants'
+import { APIPendingTransaction, APITransaction, GetTransactionParams, GetPendingTransactionParams } from './explorer'
+import { homeBlockNumberProvider } from '../services/BlockNumberProvider'
 
 export const getValidatorConfirmation = (
   web3: Web3,
@@ -45,11 +36,13 @@ export const getValidatorConfirmation = (
   }
 }
 
-export const getValidatorSuccessTransaction = (
+export const getSuccessExecutionTransaction = (
+  web3: Web3,
   bridgeContract: Contract,
+  fromHome: boolean,
   messageData: string,
-  timestamp: number,
-  getSuccessTransactions: (args: GetFailedTransactionParams) => Promise<APITransaction[]>
+  startBlock: number,
+  getSuccessTransactions: (args: GetTransactionParams) => Promise<APITransaction[]>
 ) => async (validatorData: BasicConfirmationParam): Promise<ConfirmationParam> => {
   const { validator } = validatorData
   const validatorCacheKey = `${CACHE_KEY_SUCCESS}${validatorData.validator}-${messageData}`
@@ -63,8 +56,8 @@ export const getValidatorSuccessTransaction = (
     account: validatorData.validator,
     to: bridgeContract.options.address,
     messageData,
-    startTimestamp: timestamp,
-    endTimestamp: timestamp + ONE_DAY_TIMESTAMP
+    startBlock,
+    endBlock: homeBlockNumberProvider.get() || 0
   })
 
   let txHashTimestamp = 0
@@ -96,8 +89,8 @@ export const getValidatorSuccessTransaction = (
 export const getValidatorFailedTransaction = (
   bridgeContract: Contract,
   messageData: string,
-  timestamp: number,
-  getFailedTransactions: (args: GetFailedTransactionParams) => Promise<APITransaction[]>
+  startBlock: number,
+  getFailedTransactions: (args: GetTransactionParams) => Promise<APITransaction[]>
 ) => async (validatorData: BasicConfirmationParam): Promise<ConfirmationParam> => {
   const validatorCacheKey = `${CACHE_KEY_FAILED}${validatorData.validator}-${messageData}`
   const failedFromCache = validatorsCache.getData(validatorCacheKey)
@@ -110,8 +103,8 @@ export const getValidatorFailedTransaction = (
     account: validatorData.validator,
     to: bridgeContract.options.address,
     messageData,
-    startTimestamp: timestamp,
-    endTimestamp: timestamp + ONE_DAY_TIMESTAMP
+    startBlock,
+    endBlock: homeBlockNumberProvider.get() || 0
   })
   const newStatus =
     failedTransactions.length > 0 ? VALIDATOR_CONFIRMATION_STATUS.FAILED : VALIDATOR_CONFIRMATION_STATUS.UNDEFINED

commons/abis.js

@@ -56,6 +56,11 @@ const OLD_AMB_USER_REQUEST_FOR_SIGNATURE_ABI = [
   {
     anonymous: false,
     inputs: [
+      {
+        indexed: true,
+        name: 'messageId',
+        type: 'bytes32'
+      },
       {
         indexed: false,
         name: 'encodedData',
@@ -71,6 +76,11 @@ const OLD_AMB_USER_REQUEST_FOR_AFFIRMATION_ABI = [
   {
     anonymous: false,
     inputs: [
+      {
+        indexed: true,
+        name: 'messageId',
+        type: 'bytes32'
+      },
       {
         indexed: false,
         name: 'encodedData',

commons/message.js

@@ -2,10 +2,6 @@ function strip0x(input) {
   return input.replace(/^0x/, '')
 }
 
-function addTxHashToData({ encodedData, transactionHash }) {
-  return encodedData.slice(0, 2) + strip0x(transactionHash) + encodedData.slice(2)
-}
-
 /**
  * Decodes the datatype byte from the AMB message.
  * First (the most significant bit) denotes if the message should be forwarded to the manual lane.
@@ -33,8 +29,18 @@ function parseAMBMessage(message) {
   }
 }
 
-module.exports = {
-  addTxHashToData,
-  parseAMBMessage,
-  strip0x
+const normalizeAMBMessageEvent = e => {
+  let msgData = e.returnValues.encodedData
+  if (!e.returnValues.messageId) {
+    // append tx hash to an old message, where message id was not used
+    // for old messages, e.messageId is a corresponding transactionHash
+    msgData = e.transactionHash + msgData.slice(2)
+  }
+  return parseAMBMessage(msgData)
+}
+
+module.exports = {
+  strip0x,
+  parseAMBMessage,
+  normalizeAMBMessageEvent
 }

commons/test/message.test.js

@@ -1,6 +1,6 @@
 const { BN } = require('web3-utils')
 const { expect } = require('chai').use(require('bn-chai')(BN))
-const { parseAMBMessage, strip0x, addTxHashToData } = require('../message')
+const { parseAMBMessage, strip0x } = require('../message')
 
 describe('strip0x', () => {
   it('should remove 0x from input', () => {
@@ -24,28 +24,6 @@ describe('strip0x', () => {
     expect(result).to.be.equal(input)
   })
 })
-describe('addTxHashToData', () => {
-  it('should add txHash to encoded data at position 2', () => {
-    // Given
-    const msgSender = '0x003667154bb32e42bb9e1e6532f19d187fa0082e'
-    const msgExecutor = '0xf4bef13f9f4f2b203faf0c3cbbaabe1afe056955'
-    const msgGasLimit = '000000000000000000000000000000000000000000000000000000005b877705'
-    const msgDataType = '00'
-    const msgData = '0xb1591967aed668a4b27645ff40c444892d91bf5951b382995d4d4f6ee3a2ce03'
-    const encodedData = `0x${strip0x(msgSender)}${strip0x(msgExecutor)}${msgGasLimit}${msgDataType}${strip0x(msgData)}`
-
-    const transactionHash = '0xbdceda9d8c94838aca10c687da1411a07b1390e88239c0638cb9cc264219cc10'
-    const message = `0x${strip0x(transactionHash)}${strip0x(msgSender)}${strip0x(
-      msgExecutor
-    )}${msgGasLimit}${msgDataType}${strip0x(msgData)}`
-
-    // When
-    const result = addTxHashToData({ encodedData, transactionHash })
-
-    // Then
-    expect(result).to.be.equal(message)
-  })
-})
 describe('parseAMBMessage', () => {
   it('should parse data type 00', () => {
     const msgSender = '0x003667154bb32e42bb9e1e6532f19d187fa0082e'

deployment-e2e/molecule/ultimate-amb-stake-erc-to-erc/molecule.yml

@@ -32,8 +32,6 @@ provisioner:
   inventory:
     host_vars:
       oracle-amb-host:
-        COMMON_HOME_RPC_URL: "http://parity1:8545"
-        COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
         ORACLE_VALIDATOR_ADDRESS: "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
         ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY: "8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
       ui-amb-stake-erc-to-erc-host:

deployment-e2e/molecule/ultimate-amb/molecule.yml

@@ -21,8 +21,6 @@ provisioner:
   inventory:
     host_vars:
       oracle-amb-host:
-        COMMON_HOME_RPC_URL: "http://parity1:8545"
-        COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
         ORACLE_VALIDATOR_ADDRESS: "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
         ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY: "8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
 verifier:

deployment-e2e/molecule/ultimate-commons/converge.yml

@@ -1,5 +1,3 @@
 ---
-- import_playbook: ../../../deployment/site.yml
-# The docker-compose files have to be modified, in order to join the docker containers over network with the parity containers
 - import_playbook: ./oracle-docker-compose.yml
-- import_playbook: ./ui-docker-compose.yml
+- import_playbook: ../../../deployment/site.yml

deployment-e2e/molecule/ultimate-commons/oracle-add-docker-external-network.yml

@@ -1,26 +0,0 @@
----
-- name: Slurp docker compose file
-  slurp:
-    src: "/home/poadocker/bridge/oracle/{{ file }}.yml"
-  register: docker_compose_slurp
-- name: Parse docker compose file
-  set_fact:
-    docker_compose_parsed: "{{ docker_compose_slurp['content'] | b64decode | from_yaml }}"
-
-- name: Add the external network used to connect to Parity nodes
-  set_fact:
-    docker_compose_parsed: "{{ docker_compose_parsed |combine({'networks': {'ultimate': {'external': 'true'}}}, recursive=True) }}"
-
-- name: Add all Oracle containers to the network
-  set_fact:
-    docker_compose_parsed: "{{ docker_compose_parsed | combine({'services': {item: {'networks': docker_compose_parsed.services[item].networks | union(['ultimate'])}}}, recursive=True) }}"
-  with_items: "{{ docker_compose_parsed.services }}"
-
-- name: Expose Redis port to allow connecting from redis-cli
-  set_fact:
-    docker_compose_parsed: "{{ docker_compose_parsed | combine({'services': {'redis': {'ports': ['6379:6379']}}}, recursive=True) }}"
-
-- name: Write updated docker file
-  copy:
-    content: "{{ docker_compose_parsed | to_yaml }}"
-    dest: "/home/poadocker/bridge/oracle/{{ file }}.yml"

deployment-e2e/molecule/ultimate-commons/oracle-docker-compose.yml

@@ -1,33 +1,22 @@
 ---
-- name: Overwrite Oracle the docker-compose
+- name: Prepare Oracle for ultimate tests
   hosts: oracle
   become: true
   tasks:
-  - name: stop the service
-    shell: service poabridge stop
-
-  - name: ReTag current oracle image
-    shell: docker tag $(docker images --format '{{ '{{' }}.Repository{{ '}}' }}:{{ '{{' }}.Tag{{ '}}' }}' | grep -m 1 tokenbridge-e2e-oracle) oracle:ultimate-testing
+  - name: Connect parity to oracle networks
+    shell: "docker network create {{ item }} && docker network connect {{ item }} parity1 && docker network connect {{ item }} parity2"
+    with_items:
+      - oracle_net_db_bridge_request
+      - oracle_net_db_bridge_collected
+      - oracle_net_db_bridge_affirmation
+      - oracle_net_db_bridge_transfer
+      - oracle_net_db_bridge_senderhome
+      - oracle_net_db_bridge_senderforeign
+      - oracle_net_rabbit_bridge_request
+      - oracle_net_rabbit_bridge_collected
+      - oracle_net_rabbit_bridge_affirmation
+      - oracle_net_rabbit_bridge_transfer
+      - oracle_net_rabbit_bridge_senderhome
+      - oracle_net_rabbit_bridge_senderforeign
     delegate_to: 127.0.0.1
     become: false
-
-  - name: Replace oracle image
-    replace:
-      path: "/home/poadocker/bridge/oracle/{{ item }}.yml"
-      regexp: 'poanetwork/tokenbridge-oracle:latest'
-      replace: "oracle:ultimate-testing"
-    with_items:
-      - docker-compose
-      - docker-compose-transfer
-      - docker-compose-erc-native
-
-  - include_tasks: oracle-add-docker-external-network.yml
-    with_items:
-      - docker-compose
-      - docker-compose-transfer
-      - docker-compose-erc-native
-    loop_control:
-      loop_var: file
-
-  - name: start the service
-    shell: service poabridge start

deployment-e2e/molecule/ultimate-commons/ui-docker-compose.yml

@@ -1,32 +0,0 @@
----
-- name: Overwrite UI the docker-compose
-  hosts: ui
-  become: true
-  tasks:
-  - name: stop the service
-    shell: service tokenbridge-ui stop
-  
-  - name: Slurp docker compose file
-    slurp:
-      src: "/home/poadocker/bridge/ui/docker-compose.yml"
-    register: docker_compose_slurp
-  - name: Parse docker compose file
-    set_fact:
-      docker_compose_parsed: "{{ docker_compose_slurp['content'] | b64decode | from_yaml }}"
-
-  - name: Add the external network used to connect to Parity nodes
-    set_fact:
-      docker_compose_parsed: "{{ docker_compose_parsed |combine({'networks': {'ultimate': {'external': 'true'}}}, recursive=True) }}"
-
-  - name: Add all UI containers to the network
-    set_fact:
-      docker_compose_parsed: "{{ docker_compose_parsed | combine({'services': {item: {'networks': ['ultimate']}}}, recursive=True) }}"
-    with_items: "{{ docker_compose_parsed.services }}"
-  
-  - name: Write new docker-compose file
-    copy:
-      content: "{{ docker_compose_parsed | to_yaml }}"
-      dest: "/home/poadocker/bridge/ui/docker-compose.yml"
-
-  - name: start the service
-    shell: service tokenbridge-ui start

deployment-e2e/molecule/ultimate-erc-to-erc/molecule.yml

@@ -32,8 +32,6 @@ provisioner:
   inventory:
     host_vars:
       oracle-erc-to-erc-host:
-        COMMON_HOME_RPC_URL: "http://parity1:8545"
-        COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
         ORACLE_VALIDATOR_ADDRESS: "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
         ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY: "8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
       ui-erc-to-erc-host:

deployment-e2e/molecule/ultimate-erc-to-native/molecule.yml

@@ -32,8 +32,6 @@ provisioner:
   inventory:
     host_vars:
       oracle-erc-to-native-host:
-        COMMON_HOME_RPC_URL: "http://parity1:8545"
-        COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
         ORACLE_VALIDATOR_ADDRESS: "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
         ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY: "8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
         ORACLE_HOME_START_BLOCK: 1

deployment-e2e/molecule/ultimate-native-to-erc/molecule.yml

@@ -32,8 +32,6 @@ provisioner:
   inventory:
     host_vars:
       oracle-native-to-erc-host:
-        COMMON_HOME_RPC_URL: "http://parity1:8545"
-        COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
         ORACLE_VALIDATOR_ADDRESS: "0xaaB52d66283F7A1D5978bcFcB55721ACB467384b"
         ORACLE_VALIDATOR_ADDRESS_PRIVATE_KEY: "8e829f695aed89a154550f30262f1529582cc49dc30eff74a6b491359e0230f9"
       ui-native-to-erc-host:

deployment/group_vars/ultimate.yml

@@ -5,13 +5,13 @@ ORACLE_ALLOW_HTTP_FOR_RPC: yes
 ORACLE_LOG_LEVEL: debug
 
 ## Home contract
-COMMON_HOME_RPC_URL: "https://sokol.poa.network"
+COMMON_HOME_RPC_URL: "http://parity1:8545"
 UI_HOME_NETWORK_DISPLAY_NAME: "POA Sokol"
 UI_HOME_WITHOUT_EVENTS: false
 ORACLE_HOME_RPC_POLLING_INTERVAL: 5000
 
 ## Foreign contract
-COMMON_FOREIGN_RPC_URL: "https://sokol.poa.network"
+COMMON_FOREIGN_RPC_URL: "http://parity2:8545"
 UI_FOREIGN_NETWORK_DISPLAY_NAME: "Kovan"
 UI_FOREIGN_WITHOUT_EVENTS: false
 ORACLE_FOREIGN_RPC_POLLING_INTERVAL: 1000
@@ -52,3 +52,7 @@ MONITOR_FOREIGN_START_BLOCK: 0
 MONITOR_VALIDATOR_HOME_TX_LIMIT: 300000
 MONITOR_VALIDATOR_FOREIGN_TX_LIMIT: 300000
 MONITOR_TX_NUMBER_THRESHOLD: 100
+
+# disable building and pulling of docker images from the Docker Hub
+skip_pull: true
+skip_build: true

deployment/roles/common/tasks/dependencies.yml

@@ -33,7 +33,7 @@
     mode: "0755"
 
 - name: Upgrade pip version
-  shell: pip3 install --upgrade pip
+  shell: pip3 install --upgrade pip==19.3.1
 
 - name: Install python docker library
   shell: pip3 install docker docker-compose setuptools

deployment/roles/monitor/tasks/jumpbox.yml

@@ -3,3 +3,4 @@
   shell: docker-compose pull
   args:
     chdir: "{{ bridge_path }}/monitor"
+  when: skip_pull is undefined

deployment/roles/oracle/tasks/jumpbox.yml

@@ -3,3 +3,4 @@
   shell: docker-compose pull
   args:
     chdir: "{{ bridge_path }}/oracle"
+  when: skip_pull is undefined

deployment/roles/ui/tasks/jumpbox.yml

@@ -3,3 +3,4 @@
   shell: docker-compose build
   args:
     chdir: "{{ bridge_path }}/ui"
+  when: skip_build is undefined

e2e-commons/components-envs/ui-amb-stake-erc20-erc20.env

@@ -19,5 +19,5 @@ COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE=standard
 COMMON_FOREIGN_GAS_PRICE_FALLBACK=5000000000
 UI_FOREIGN_GAS_PRICE_UPDATE_INTERVAL=15000
 COMMON_FOREIGN_GAS_PRICE_FACTOR=1
-UI_PORT=3000
+UI_PORT=3003
 UI_STYLES=stake

e2e-commons/components-envs/ui-erc20-native.env

@@ -19,5 +19,5 @@ COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE=standard
 COMMON_FOREIGN_GAS_PRICE_FALLBACK=5000000000
 UI_FOREIGN_GAS_PRICE_UPDATE_INTERVAL=15000
 COMMON_FOREIGN_GAS_PRICE_FACTOR=1
-UI_PORT=3000
+UI_PORT=3002
 UI_STYLES=core

e2e-commons/components-envs/ui-erc20.env

@@ -19,5 +19,5 @@ COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE=standard
 COMMON_FOREIGN_GAS_PRICE_FALLBACK=5000000000
 UI_FOREIGN_GAS_PRICE_UPDATE_INTERVAL=15000
 COMMON_FOREIGN_GAS_PRICE_FACTOR=1
-UI_PORT=3000
+UI_PORT=3001
 UI_STYLES=core

e2e-commons/docker-compose.yml

@@ -4,12 +4,14 @@ networks:
     external: true
 services:
   parity1:
+    container_name: parity1
     build: ../parity
     ports:
     - "8541:8545"
     networks:
       - ultimate
   parity2:
+    container_name: parity2
     build:
       context: ../parity
       dockerfile: Dockerfile-foreign

e2e-commons/up.sh

@@ -80,9 +80,9 @@ while [ "$1" != "" ]; do
     docker-compose up -d ui ui-erc20 ui-erc20-native ui-amb-stake-erc20-erc20
 
     docker-compose run -d -p 3000:3000 ui yarn start
-    docker-compose run -d -p 3001:3000 ui-erc20 yarn start
-    docker-compose run -d -p 3002:3000 ui-erc20-native yarn start
-    docker-compose run -d -p 3003:3000 ui-amb-stake-erc20-erc20 yarn start
+    docker-compose run -d -p 3001:3001 ui-erc20 yarn start
+    docker-compose run -d -p 3002:3002 ui-erc20-native yarn start
+    docker-compose run -d -p 3003:3003 ui-amb-stake-erc20-erc20 yarn start
   fi
 
   if [ "$1" == "alm" ]; then

monitor/.env.example

@@ -25,3 +25,9 @@ MONITOR_CACHE_EVENTS=true
 
 MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST=
 MONITOR_HOME_TO_FOREIGN_BLOCK_LIST=
+
+# MONITOR_HOME_VALIDATORS_BALANCE_ENABLE=0x... 0x... 0x...
+# MONITOR_FOREIGN_VALIDATORS_BALANCE_ENABLE=0x... 0x... 0x...
+
+# MONITOR_HOME_EXPLORER_API=
+MONITOR_FOREIGN_EXPLORER_API=https://api.bscscan.com/api?apikey=YourApiKeyToken

monitor/alerts.js

@@ -1,18 +1,19 @@
 require('dotenv').config()
 const logger = require('./logger')('alerts')
-const eventsInfo = require('./utils/events')
 const { processedMsgNotDelivered, eventWithoutReference } = require('./utils/message')
 const { BRIDGE_MODES } = require('../commons')
-const { web3Home, web3Foreign, getHomeBlockNumber, getForeignBlockNumber } = require('./utils/web3')
+const { web3Home, web3Foreign } = require('./utils/web3')
 
-async function main() {
+async function main(eventsInfo) {
   const {
+    homeBlockNumber,
+    foreignBlockNumber,
     homeToForeignRequests,
     homeToForeignConfirmations,
     foreignToHomeConfirmations,
     foreignToHomeRequests,
     bridgeMode
-  } = await eventsInfo()
+  } = eventsInfo
 
   let xSignatures
   let xAffirmations
@@ -24,8 +25,6 @@ async function main() {
     xAffirmations = foreignToHomeConfirmations.filter(eventWithoutReference(foreignToHomeRequests))
   }
   logger.debug('building misbehavior blocks')
-  const homeBlockNumber = await getHomeBlockNumber()
-  const foreignBlockNumber = await getForeignBlockNumber()
 
   const baseRange = [false, false, false, false, false]
   const xSignaturesMisbehavior = buildRangesObject(

monitor/checkWorker.js

@@ -12,10 +12,6 @@ const { web3Home } = require('./utils/web3')
 
 const { COMMON_HOME_BRIDGE_ADDRESS, MONITOR_BRIDGE_NAME } = process.env
 
-const MONITOR_VALIDATOR_HOME_TX_LIMIT = Number(process.env.MONITOR_VALIDATOR_HOME_TX_LIMIT) || 0
-const MONITOR_VALIDATOR_FOREIGN_TX_LIMIT = Number(process.env.MONITOR_VALIDATOR_FOREIGN_TX_LIMIT) || 0
-const MONITOR_TX_NUMBER_THRESHOLD = Number(process.env.MONITOR_TX_NUMBER_THRESHOLD) || 100
-
 const { HOME_ERC_TO_ERC_ABI } = require('../commons')
 
 async function checkWorker() {
@@ -45,27 +41,6 @@ async function checkWorker() {
     const vBalances = await validators(bridgeMode)
     if (!vBalances) throw new Error('vBalances is empty: ' + JSON.stringify(vBalances))
 
-    vBalances.homeOk = true
-    vBalances.foreignOk = true
-
-    if (MONITOR_VALIDATOR_HOME_TX_LIMIT) {
-      for (const hv in vBalances.home.validators) {
-        if (vBalances.home.validators[hv].leftTx < MONITOR_TX_NUMBER_THRESHOLD) {
-          vBalances.homeOk = false
-          break
-        }
-      }
-    }
-
-    if (MONITOR_VALIDATOR_FOREIGN_TX_LIMIT) {
-      for (const hv in vBalances.foreign.validators) {
-        if (vBalances.foreign.validators[hv].leftTx < MONITOR_TX_NUMBER_THRESHOLD) {
-          vBalances.foreignOk = false
-          break
-        }
-      }
-    }
-
     vBalances.ok = vBalances.homeOk && vBalances.foreignOk
     vBalances.health = true
     writeFile(`/responses/${MONITOR_BRIDGE_NAME}/validators.json`, vBalances)

monitor/checkWorker2.js

@@ -1,6 +1,7 @@
 require('dotenv').config()
 const logger = require('./logger')('checkWorker2')
 const eventsStats = require('./eventsStats')
+const getEventsInfo = require('./utils/events')
 const alerts = require('./alerts')
 const { writeFile, createDir } = require('./utils/file')
 const { saveCache } = require('./utils/web3Cache')
@@ -10,8 +11,10 @@ const { MONITOR_BRIDGE_NAME } = process.env
 async function checkWorker2() {
   try {
     createDir(`/responses/${MONITOR_BRIDGE_NAME}`)
+    logger.debug('calling getEventsInfo()')
+    const eventsInfo = await getEventsInfo()
     logger.debug('calling eventsStats()')
-    const evStats = await eventsStats()
+    const evStats = await eventsStats(eventsInfo)
     if (!evStats) throw new Error('evStats is empty: ' + JSON.stringify(evStats))
     evStats.ok =
       (evStats.onlyInHomeDeposits || evStats.home.deliveredMsgNotProcessedInForeign).length === 0 &&
@@ -22,7 +25,7 @@ async function checkWorker2() {
     writeFile(`/responses/${MONITOR_BRIDGE_NAME}/eventsStats.json`, evStats)
 
     logger.debug('calling alerts()')
-    const _alerts = await alerts()
+    const _alerts = await alerts(eventsInfo)
     if (!_alerts) throw new Error('alerts is empty: ' + JSON.stringify(_alerts))
     _alerts.ok = !_alerts.executeAffirmations.mostRecentTxHash && !_alerts.executeSignatures.mostRecentTxHash
     _alerts.health = true

monitor/checkWorker3.js

@@ -1,8 +1,11 @@
 require('dotenv').config()
 const logger = require('./logger')('checkWorker3')
 const stuckTransfers = require('./stuckTransfers')
+const detectMediators = require('./detectMediators')
+const detectFailures = require('./detectFailures')
 const { writeFile, createDir } = require('./utils/file')
 const { web3Home } = require('./utils/web3')
+const { saveCache } = require('./utils/web3Cache')
 
 const { MONITOR_BRIDGE_NAME, COMMON_HOME_BRIDGE_ADDRESS } = process.env
 const { getBridgeMode, HOME_NATIVE_TO_ERC_ABI, BRIDGE_MODES } = require('../commons')
@@ -20,6 +23,23 @@ async function checkWorker3() {
       transfers.health = true
       writeFile(`/responses/${MONITOR_BRIDGE_NAME}/stuckTransfers.json`, transfers)
       logger.debug('Done')
+    } else if (bridgeMode === BRIDGE_MODES.ARBITRARY_MESSAGE) {
+      createDir(`/responses/${MONITOR_BRIDGE_NAME}`)
+
+      logger.debug('calling detectMediators()')
+      const mediators = await detectMediators(bridgeMode)
+      mediators.ok = true
+      mediators.health = true
+      writeFile(`/responses/${MONITOR_BRIDGE_NAME}/mediators.json`, mediators)
+
+      logger.debug('calling detectFailures()')
+      const failures = await detectFailures(bridgeMode)
+      failures.ok = true
+      failures.health = true
+      writeFile(`/responses/${MONITOR_BRIDGE_NAME}/failures.json`, failures)
+
+      saveCache()
+      logger.debug('Done')
     }
   } catch (e) {
     logger.error('checkWorker3.js', e)

monitor/detectFailures.js

@@ -0,0 +1,86 @@
+require('dotenv').config()
+const logger = require('./logger')('alerts')
+const eventsInfo = require('./utils/events')
+const { normalizeAMBMessageEvent } = require('../commons')
+const { getHomeBlockNumber, getForeignBlockNumber } = require('./utils/web3')
+
+function normalize(events) {
+  const requests = {}
+  events.forEach(event => {
+    const request = normalizeAMBMessageEvent(event)
+    request.requestTx = event.transactionHash
+    requests[request.messageId] = request
+  })
+  return confirmation => {
+    const request = requests[confirmation.returnValues.messageId] || {}
+    return {
+      ...request,
+      status: false,
+      executionTx: confirmation.transactionHash,
+      executionBlockNumber: confirmation.blockNumber
+    }
+  }
+}
+
+async function main(mode) {
+  const {
+    homeToForeignRequests,
+    homeToForeignConfirmations,
+    foreignToHomeConfirmations,
+    foreignToHomeRequests
+  } = await eventsInfo(mode)
+  const hasFailed = event => !event.returnValues.status
+  const cmp = (a, b) => b.executionBlockNumber - a.executionBlockNumber
+  const failedForeignToHomeMessages = foreignToHomeConfirmations
+    .filter(hasFailed)
+    .map(normalize(foreignToHomeRequests))
+    .sort(cmp)
+  const failedHomeToForeignMessages = homeToForeignConfirmations
+    .filter(hasFailed)
+    .map(normalize(homeToForeignRequests))
+    .sort(cmp)
+
+  const homeBlockNumber = await getHomeBlockNumber()
+  const foreignBlockNumber = await getForeignBlockNumber()
+
+  const blockRanges = [1000, 10000, 100000, 1000000]
+  const rangeNames = [
+    `last${blockRanges[0]}blocks`,
+    ...blockRanges.slice(0, blockRanges.length - 1).map((n, i) => `last${n}to${blockRanges[i + 1]}blocks`),
+    `before${blockRanges[blockRanges.length - 1]}blocks`
+  ]
+
+  const countFailures = (failedMessages, lastBlockNumber) => {
+    const result = {}
+    rangeNames.forEach(name => {
+      result[name] = 0
+    })
+    failedMessages.forEach(message => {
+      const blockAge = lastBlockNumber - message.executionBlockNumber
+      let rangeIndex = blockRanges.findIndex(n => n > blockAge)
+      if (rangeIndex === -1) {
+        rangeIndex = blockRanges.length
+      }
+      result[rangeNames[rangeIndex]] += 1
+    })
+    return result
+  }
+
+  logger.debug('Done')
+
+  return {
+    homeToForeign: {
+      total: failedHomeToForeignMessages.length,
+      stats: countFailures(failedHomeToForeignMessages, foreignBlockNumber),
+      lastFailures: failedHomeToForeignMessages.slice(0, 5)
+    },
+    foreignToHome: {
+      total: failedForeignToHomeMessages.length,
+      stats: countFailures(failedForeignToHomeMessages, homeBlockNumber),
+      lastFailures: failedForeignToHomeMessages.slice(0, 5)
+    },
+    lastChecked: Math.floor(Date.now() / 1000)
+  }
+}
+
+module.exports = main

monitor/detectMediators.js

@@ -0,0 +1,148 @@
+require('dotenv').config()
+const logger = require('./logger')('stuckTransfers.js')
+const { isHomeContract, isForeignContract } = require('./utils/web3Cache')
+const eventsInfo = require('./utils/events')
+const { getHomeTxSender, getForeignTxSender } = require('./utils/web3Cache')
+const { addExecutionStatus } = require('./utils/message')
+const { normalizeAMBMessageEvent } = require('../commons')
+
+function countInteractions(requests) {
+  const stats = {}
+  requests.forEach(msg => {
+    if (!stats[msg.sender]) {
+      stats[msg.sender] = {}
+    }
+    if (!stats[msg.sender][msg.executor]) {
+      stats[msg.sender][msg.executor] = 0
+    }
+    stats[msg.sender][msg.executor] += 1
+  })
+  return stats
+}
+
+const normalize = event => ({
+  ...normalizeAMBMessageEvent(event),
+  txHash: event.transactionHash,
+  logIndex: event.transactionLogIndex
+})
+
+const flat = arrays => Array.prototype.concat.apply([], arrays)
+
+function findPermanentMediators(homeToForeignC2C, foreignToHomeC2C) {
+  return flat(
+    Object.entries(homeToForeignC2C).map(([homeMediator, homeStats]) =>
+      Object.entries(foreignToHomeC2C)
+        .map(([foreignMediator, foreignStats]) => ({
+          homeMediator,
+          foreignMediator,
+          homeToForeignRequests: homeStats[foreignMediator],
+          foreignToHomeRequests: foreignStats[homeMediator]
+        }))
+        .filter(stats => stats.homeToForeignRequests && stats.foreignToHomeRequests)
+    )
+  )
+}
+
+function findFloatingMediators(homeToForeignC2C, foreignToHomeC2C) {
+  return Object.entries(homeToForeignC2C)
+    .map(([homeMediator, homeStats]) => {
+      const noResponses = ([executor]) => !foreignToHomeC2C[executor] || !foreignToHomeC2C[executor][homeMediator]
+      const executorRequestPairs = Object.entries(homeStats).filter(noResponses)
+      return {
+        mediator: homeMediator,
+        executors: executorRequestPairs.map(pair => pair[0]),
+        requests: executorRequestPairs.map(pair => pair[1])
+      }
+    })
+    .filter(stats => stats.executors.length > 0)
+}
+
+function findRemotelyControlledMediators(statsU2C) {
+  return Object.entries(statsU2C).map(([user, stats]) => ({
+    user,
+    executors: Object.keys(stats),
+    requests: Object.values(stats)
+  }))
+}
+
+function findUnknown(statsA2U) {
+  return Object.entries(statsA2U).map(([sender, stats]) => ({
+    sender,
+    executors: Object.keys(stats),
+    requests: Object.values(stats)
+  }))
+}
+
+async function main(mode) {
+  const {
+    homeToForeignRequests,
+    foreignToHomeRequests,
+    homeToForeignConfirmations,
+    foreignToHomeConfirmations
+  } = await eventsInfo(mode)
+  const homeToForeign = homeToForeignRequests
+    .map(normalize)
+    .map(addExecutionStatus(homeToForeignConfirmations))
+    .filter(x => typeof x.status === 'boolean')
+  const foreignToHome = foreignToHomeRequests
+    .map(normalize)
+    .map(addExecutionStatus(foreignToHomeConfirmations))
+    .filter(x => typeof x.status === 'boolean')
+
+  for (const event of homeToForeign) {
+    // AMB contract emits a single UserRequestForSignature event for every home->foreign request.
+    // If index of such event in logs is not equal to 0x0, then some other events occurred before it,
+    // meaning that the sender was a contract.
+    // Alternatively, the sender is a contract, if the message sender is not equal to tx.origin.
+    event.isSenderAContract = event.logIndex !== '0x0' || (await getHomeTxSender(event.txHash)) !== event.sender
+
+    // Executor is definitely a contract if a message execution failed, since message calls to EOA always succeed.
+    // Alternatively, the executor is checked to be a contract by looking at its bytecode size.
+    event.isExecutorAContract = !event.status || (await isForeignContract(event.executor))
+  }
+  for (const event of foreignToHome) {
+    // AMB contract emits a single UserRequestForAffirmation event for every foreign->home request.
+    // If index of such event in logs is not equal to 0x0, then some other events occurred before it,
+    // meaning that the sender was a contract.
+    // Alternatively, the sender is a contract, if the message sender is not equal to tx.origin.
+    event.isSenderAContract = event.logIndex !== '0x0' || (await getForeignTxSender(event.txHash)) !== event.sender
+
+    // Executor is definitely a contract if a message execution failed, since message calls to EOA always succeed.
+    // Alternatively, the executor is checked to be a contract by looking at its bytecode size.
+    event.isExecutorAContract = !event.status || (await isHomeContract(event.executor))
+  }
+  const C2C = event => event.isSenderAContract && event.isExecutorAContract
+  const U2C = event => !event.isSenderAContract && event.isExecutorAContract
+  const A2U = event => !event.isExecutorAContract
+
+  const homeToForeignC2C = countInteractions(homeToForeign.filter(C2C))
+  const foreignToHomeC2C = countInteractions(foreignToHome.filter(C2C))
+  const homeToForeignU2C = countInteractions(homeToForeign.filter(U2C))
+  const foreignToHomeU2C = countInteractions(foreignToHome.filter(U2C))
+  const homeToForeignA2U = countInteractions(homeToForeign.filter(A2U))
+  const foreignToHomeA2U = countInteractions(foreignToHome.filter(A2U))
+
+  const permanentMediators = findPermanentMediators(homeToForeignC2C, foreignToHomeC2C)
+  const floatingMediators = {
+    home: findFloatingMediators(homeToForeignC2C, foreignToHomeC2C),
+    foreign: findFloatingMediators(foreignToHomeC2C, homeToForeignC2C)
+  }
+  const remotelyControlledMediators = {
+    home: findRemotelyControlledMediators(homeToForeignU2C),
+    foreign: findRemotelyControlledMediators(foreignToHomeU2C)
+  }
+  const unknown = {
+    home: findUnknown(homeToForeignA2U),
+    foreign: findUnknown(foreignToHomeA2U)
+  }
+
+  logger.debug('Done')
+  return {
+    permanentMediators,
+    floatingMediators,
+    remotelyControlledMediators,
+    unknown,
+    lastChecked: Math.floor(Date.now() / 1000)
+  }
+}
+module.exports = main

monitor/eventsStats.js

@@ -1,5 +1,4 @@
 require('dotenv').config()
-const eventsInfo = require('./utils/events')
 const {
   processedMsgNotDelivered,
   deliveredMsgNotProcessed,
@@ -15,14 +14,14 @@ const {
   MONITOR_HOME_TO_FOREIGN_CHECK_SENDER
 } = process.env
 
-async function main() {
+async function main(eventsInfo) {
   const {
     homeToForeignRequests,
     homeToForeignConfirmations,
     foreignToHomeConfirmations,
     foreignToHomeRequests,
     bridgeMode
-  } = await eventsInfo()
+  } = eventsInfo
 
   if (bridgeMode === BRIDGE_MODES.ARBITRARY_MESSAGE) {
     return {

monitor/getBalances.js

@@ -5,7 +5,12 @@ const logger = require('./logger')('getBalances')
 const { BRIDGE_MODES } = require('../commons')
 const { web3Home, web3Foreign, getHomeBlockNumber } = require('./utils/web3')
 
-const { COMMON_HOME_BRIDGE_ADDRESS, COMMON_FOREIGN_BRIDGE_ADDRESS } = process.env
+const {
+  MONITOR_HOME_START_BLOCK,
+  MONITOR_FOREIGN_START_BLOCK,
+  COMMON_HOME_BRIDGE_ADDRESS,
+  COMMON_FOREIGN_BRIDGE_ADDRESS
+} = process.env
 
 const {
   ERC20_ABI,
@@ -20,6 +25,8 @@ const {
 
 async function main(bridgeMode, eventsInfo) {
   const {
+    homeBlockNumber,
+    foreignBlockNumber,
     homeToForeignConfirmations,
     foreignToHomeConfirmations,
     homeDelayedBlockNumber,
@@ -46,6 +53,13 @@ async function main(bridgeMode, eventsInfo) {
     ...foreignToHomeConfirmations.filter(e => e.blockNumber > homeDelayedBlockNumber).map(e => e.value)
   )
 
+  const blockRanges = {
+    startBlockHome: MONITOR_HOME_START_BLOCK,
+    endBlockHome: homeBlockNumber,
+    startBlockForeign: MONITOR_FOREIGN_START_BLOCK,
+    endBlockForeign: foreignBlockNumber
+  }
+
   if (bridgeMode === BRIDGE_MODES.ERC_TO_ERC) {
     const foreignBridge = new web3Foreign.eth.Contract(FOREIGN_ERC_TO_ERC_ABI, COMMON_FOREIGN_BRIDGE_ADDRESS)
     const erc20Address = await foreignBridge.methods.erc20token().call()
@@ -72,6 +86,7 @@ async function main(bridgeMode, eventsInfo) {
         erc20Balance: Web3Utils.fromWei(foreignErc20Balance)
       },
       balanceDiff: Number(Web3Utils.fromWei(diff)),
+      ...blockRanges,
       lastChecked: Math.floor(Date.now() / 1000)
     }
   } else if (bridgeMode === BRIDGE_MODES.NATIVE_TO_ERC || bridgeMode === BRIDGE_MODES.NATIVE_TO_ERC_V1) {
@@ -94,6 +109,7 @@ async function main(bridgeMode, eventsInfo) {
         totalSupply: Web3Utils.fromWei(totalSupply)
       },
       balanceDiff: Number(Web3Utils.fromWei(diff)),
+      ...blockRanges,
       lastChecked: Math.floor(Date.now() / 1000)
     }
   } else if (bridgeMode === BRIDGE_MODES.ERC_TO_NATIVE) {
@@ -163,12 +179,14 @@ async function main(bridgeMode, eventsInfo) {
       },
       foreign,
       balanceDiff: Number(Web3Utils.fromWei(diff)),
+      ...blockRanges,
       lastChecked: Math.floor(Date.now() / 1000)
     }
   } else if (bridgeMode === BRIDGE_MODES.ARBITRARY_MESSAGE) {
     return {
       home: {},
       foreign: {},
+      ...blockRanges,
       lastChecked: Math.floor(Date.now() / 1000)
     }
   } else {

monitor/index.js

@@ -11,9 +11,10 @@ app.use(cors())
 app.get('/favicon.ico', (req, res) => res.sendStatus(204))
 app.use('/:bridgeName', bridgeRouter)
 
-bridgeRouter.get('/', async (req, res, next) => {
+bridgeRouter.get('/:file(validators|eventsStats|alerts|mediators|stuckTransfers|failures)?', (req, res, next) => {
   try {
-    const results = await readFile(`./responses/${req.params.bridgeName}/getBalances.json`)
+    const { bridgeName, file } = req.params
+    const results = readFile(`./responses/${bridgeName}/${file || 'getBalances'}.json`)
     res.json(results)
   } catch (e) {
     // this will eventually be handled by your error handling middleware
@@ -21,39 +22,11 @@ bridgeRouter.get('/', async (req, res, next) => {
   }
 })
 
-bridgeRouter.get('/validators', async (req, res, next) => {
+bridgeRouter.get('/metrics', (req, res, next) => {
   try {
-    const results = await readFile(`./responses/${req.params.bridgeName}/validators.json`)
-    res.json(results)
-  } catch (e) {
-    // this will eventually be handled by your error handling middleware
-    next(e)
-  }
-})
-
-bridgeRouter.get('/eventsStats', async (req, res, next) => {
-  try {
-    const results = await readFile(`./responses/${req.params.bridgeName}/eventsStats.json`)
-    res.json(results)
-  } catch (e) {
-    // this will eventually be handled by your error handling middleware
-    next(e)
-  }
-})
-
-bridgeRouter.get('/alerts', async (req, res, next) => {
-  try {
-    const results = await readFile(`./responses/${req.params.bridgeName}/alerts.json`)
-    res.json(results)
-  } catch (e) {
-    next(e)
-  }
-})
-
-bridgeRouter.get('/stuckTransfers', async (req, res, next) => {
-  try {
-    const results = await readFile(`./responses/${req.params.bridgeName}/stuckTransfers.json`)
-    res.json(results)
+    const { bridgeName } = req.params
+    const metrics = readFile(`./responses/${bridgeName}/metrics.txt`, false)
+    res.type('text').send(metrics)
   } catch (e) {
     next(e)
   }

monitor/metricsWorker.js

@@ -0,0 +1,20 @@
+require('dotenv').config()
+const logger = require('./logger')('metricsWorker')
+const { writeFile, createDir } = require('./utils/file')
+const getPrometheusMetrics = require('./prometheusMetrics')
+
+const { MONITOR_BRIDGE_NAME } = process.env
+
+async function metricsWorker() {
+  try {
+    createDir(`/responses/${MONITOR_BRIDGE_NAME}`)
+    logger.debug('calling getPrometheusMetrics()')
+    const metrics = await getPrometheusMetrics(MONITOR_BRIDGE_NAME)
+    if (!metrics) throw new Error('metrics is empty: ' + JSON.stringify(metrics))
+    writeFile(`/responses/${MONITOR_BRIDGE_NAME}/metrics.txt`, metrics, { stringify: false })
+    logger.debug('Done')
+  } catch (e) {
+    logger.error(e)
+  }
+}
+metricsWorker()

monitor/package.json

@@ -4,7 +4,7 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "check-all": "timeout -s 9 5m node checkWorker.js && timeout -s 9 5m node checkWorker2.js && timeout -s 9 5m node checkWorker3.js",
+    "check-all": "timeout -s 9 5m node checkWorker.js && timeout -s 9 5m node checkWorker2.js && timeout -s 9 5m node checkWorker3.js && timeout -s 9 10s node metricsWorker.js",
     "start": "node index.js",
     "check-and-start": "yarn check-all && yarn start",
     "lint": "eslint . --ignore-path ../.eslintignore",

monitor/prometheusMetrics.js

@@ -0,0 +1,137 @@
+require('dotenv').config()
+const logger = require('./logger')('getBalances')
+const { readFile } = require('./utils/file')
+
+const {
+  MONITOR_HOME_START_BLOCK,
+  MONITOR_FOREIGN_START_BLOCK,
+  MONITOR_HOME_VALIDATORS_BALANCE_ENABLE,
+  MONITOR_FOREIGN_VALIDATORS_BALANCE_ENABLE
+} = process.env
+
+function BridgeConf(type, validatorsBalanceEnable, alertTargetFunc, failureDirection) {
+  this.type = type
+  this.validatorsBalanceEnable = validatorsBalanceEnable
+  this.alertTargetFunc = alertTargetFunc
+  this.failureDirection = failureDirection
+}
+
+const BRIDGE_CONFS = [
+  new BridgeConf('home', MONITOR_HOME_VALIDATORS_BALANCE_ENABLE, 'executeAffirmations', 'homeToForeign'),
+  new BridgeConf('foreign', MONITOR_FOREIGN_VALIDATORS_BALANCE_ENABLE, 'executeSignatures', 'foreignToHome')
+]
+
+function hasError(obj) {
+  return 'error' in obj
+}
+
+// Try to collect all metrics from JSON responses and then
+// discard all unsuccessfully retrieved ones
+async function getPrometheusMetrics(bridgeName) {
+  const responsePath = jsonName => `./responses/${bridgeName}/${jsonName}.json`
+
+  const metrics = {}
+
+  // Balance metrics
+  const balancesFile = readFile(responsePath('getBalances'))
+
+  if (!hasError(balancesFile)) {
+    const { home, foreign, ...commonBalances } = balancesFile
+
+    const balanceMetrics = {
+      // ERC_TO_ERC or ERC_TO_NATIVE mode
+      balances_home_value: home.totalSupply,
+      balances_home_txs_deposit: home.deposits,
+      balances_home_txs_withdrawal: home.withdrawals,
+      balances_foreign_value: foreign.erc20Balance,
+      balances_foreign_txs_deposit: foreign.deposits,
+      balances_foreign_txs_withdrawal: foreign.withdrawals,
+
+      // Not ARBITRARY_MESSAGE mode
+      balances_diff_value: commonBalances.balanceDiff,
+      balances_diff_deposit: commonBalances.depositsDiff,
+      balances_diff_withdrawal: commonBalances.withdrawalDiff,
+
+      // MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST or MONITOR_HOME_TO_FOREIGN_BLOCK_LIST is set
+      balances_unclaimed_txs: commonBalances.unclaimedDiff,
+      balances_unclaimed_value: commonBalances.unclaimedBalance,
+
+      // ARBITRARY_MESSAGE mode
+      txs_home_out: home.toForeign,
+      txs_home_in: home.fromForeign,
+      txs_foreign_out: foreign.toHome,
+      txs_foreign_in: foreign.fromHome,
+      txs_diff_home_out_oracles: commonBalances.fromHomeToForeignDiff,
+      txs_diff_home_out_users: commonBalances.fromHomeToForeignPBUDiff,
+      txs_diff_foreign_out: commonBalances.fromForeignToHomeDiff
+    }
+
+    const blockRanges = {
+      state_startblock_home: commonBalances.startBlockHome || MONITOR_HOME_START_BLOCK,
+      state_startblock_foreign: commonBalances.startBlockForeign || MONITOR_FOREIGN_START_BLOCK,
+      state_endblock_home: commonBalances.endBlockHome,
+      state_endblock_foreign: commonBalances.endBlockForeign
+    }
+
+    Object.assign(metrics, blockRanges, balanceMetrics)
+  }
+
+  // Validator metrics
+  const validatorsFile = readFile(responsePath('validators'))
+
+  if (!hasError(validatorsFile)) {
+    for (const bridge of BRIDGE_CONFS) {
+      const allValidators = validatorsFile[bridge.type].validators
+      const validatorAddressesWithBalanceCheck =
+        typeof bridge.validatorsBalanceEnable === 'string'
+          ? bridge.validatorsBalanceEnable.split(' ')
+          : Object.keys(allValidators)
+
+      validatorAddressesWithBalanceCheck.forEach((addr, ind) => {
+        if (addr in allValidators) {
+          metrics[`validators_balances_${bridge.type}${ind}{address="${addr}"}`] = allValidators[addr].balance
+        } else {
+          logger.debug(`Nonexistent validator address ${addr}`)
+        }
+      })
+    }
+  }
+
+  // Alert metrics
+  const alertsFile = readFile(responsePath('alerts'))
+
+  if (!hasError(alertsFile)) {
+    for (const bridge of BRIDGE_CONFS) {
+      Object.entries(alertsFile[bridge.alertTargetFunc].misbehavior).forEach(([period, val]) => {
+        metrics[`misbehavior_${bridge.type}_${period}`] = val
+      })
+    }
+  }
+
+  // Failure metrics
+  const failureFile = readFile(responsePath('failures'))
+
+  if (!hasError(failureFile)) {
+    for (const bridge of BRIDGE_CONFS) {
+      const dir = bridge.failureDirection
+      const failures = failureFile[dir]
+      metrics[`failures_${dir}_total`] = failures.total
+      Object.entries(failures.stats).forEach(([period, count]) => {
+        metrics[`failures_${dir}_${period}`] = count
+      })
+    }
+  }
+
+  // Pack metrcis into a plain text
+  return Object.entries(metrics).reduceRight(
+    // Prometheus supports `Nan` and possibly signed `Infinity`
+    // in case cast to `Number` fails
+    (acc, [key, val]) => {
+      if (typeof val === 'undefined') return acc
+      else return `${key} ${Number(val)}\n${acc}`
+    },
+    ''
+  )
+}
+
+module.exports = getPrometheusMetrics

monitor/utils/events.js

@@ -236,13 +236,15 @@ async function main(mode) {
     foreignToHomeRequests,
     isExternalErc20,
     bridgeMode,
+    homeBlockNumber,
+    foreignBlockNumber,
     homeDelayedBlockNumber,
     foreignDelayedBlockNumber
   }
 
   if (MONITOR_CACHE_EVENTS === 'true') {
     logger.debug('saving obtained events into cache file')
-    writeFile(cacheFilePath, result, false)
+    writeFile(cacheFilePath, result, { useCwd: false })
   }
   return result
 }

monitor/utils/file.js

@@ -1,23 +1,30 @@
 const fs = require('fs')
 const path = require('path')
 
-async function readFile(filePath) {
+function readFile(filePath, parseJson = true) {
   try {
-    const content = await fs.readFileSync(filePath)
+    const content = fs.readFileSync(filePath)
+    if (!parseJson) return content
     const json = JSON.parse(content)
     const timeDiff = Math.floor(Date.now() / 1000) - json.lastChecked
     return Object.assign({}, json, { timeDiff })
   } catch (e) {
-    console.error(e)
+    console.error('readFlle', e)
     return {
       error: 'the bridge statistics are not available'
     }
   }
 }
 
-function writeFile(filePath, object, useCwd = true) {
+function writeFile(filePath, object, paramOptions = {}) {
+  const defaultOptions = {
+    useCwd: true,
+    stringify: true
+  }
+  const { useCwd, stringify } = Object.assign({}, defaultOptions, paramOptions)
+
   const fullPath = useCwd ? path.join(process.cwd(), filePath) : filePath
-  fs.writeFileSync(fullPath, JSON.stringify(object, null, 4))
+  fs.writeFileSync(fullPath, stringify ? JSON.stringify(object, null, 4) : object)
 }
 
 function createDir(dirPath) {

monitor/utils/message.js

@@ -1,32 +1,33 @@
-const { parseAMBMessage } = require('../../commons')
+const { normalizeAMBMessageEvent } = require('../../commons')
 const { readAccessListFile } = require('./file')
 
 const { MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST, MONITOR_HOME_TO_FOREIGN_BLOCK_LIST } = process.env
 
 const keyAMB = e => [e.messageId, e.sender, e.executor].join(',').toLowerCase()
 
-const normalizeAMBMessage = e => {
-  let msgData = e.returnValues.encodedData
-  if (!e.returnValues.messageId) {
-    // append tx hash to an old message, where message id was not used
-    // for old messages, e.messageId is a corresponding transactionHash
-    msgData = e.transactionHash + msgData.slice(2)
-  }
-  return parseAMBMessage(msgData)
-}
-
 function deliveredMsgNotProcessed(processedList) {
   const keys = new Set()
   processedList.forEach(processedMsg => keys.add(keyAMB(processedMsg.returnValues)))
-  return deliveredMsg => !keys.has(keyAMB(normalizeAMBMessage(deliveredMsg)))
+  return deliveredMsg => !keys.has(keyAMB(normalizeAMBMessageEvent(deliveredMsg)))
 }
 
 function processedMsgNotDelivered(deliveredList) {
   const keys = new Set()
-  deliveredList.forEach(deliveredMsg => keys.add(keyAMB(normalizeAMBMessage(deliveredMsg))))
+  deliveredList.forEach(deliveredMsg => keys.add(keyAMB(normalizeAMBMessageEvent(deliveredMsg))))
   return processedMsg => !keys.has(keyAMB(processedMsg.returnValues))
 }
 
+function addExecutionStatus(processedList) {
+  const statuses = {}
+  processedList.forEach(processedMsg => {
+    statuses[keyAMB(processedMsg.returnValues)] = processedMsg.returnValues.status
+  })
+  return deliveredMsg => {
+    deliveredMsg.status = statuses[keyAMB(deliveredMsg)]
+    return deliveredMsg
+  }
+}
+
 /**
  * Normalizes the different event objects to facilitate data processing
  * @param {Object} event
@@ -70,23 +71,24 @@ const manuallyProcessedAMBHomeToForeignRequests = () => {
   if (MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST) {
     const allowanceList = readAccessListFile(MONITOR_HOME_TO_FOREIGN_ALLOWANCE_LIST)
     return e => {
-      const { sender, executor, decodedDataType } = normalizeAMBMessage(e)
+      const { sender, executor, decodedDataType } = normalizeAMBMessageEvent(e)
       return (!allowanceList.includes(sender) && !allowanceList.includes(executor)) || decodedDataType.manualLane
     }
   } else if (MONITOR_HOME_TO_FOREIGN_BLOCK_LIST) {
     const blockList = readAccessListFile(MONITOR_HOME_TO_FOREIGN_BLOCK_LIST)
     return e => {
-      const { sender, executor, decodedDataType } = normalizeAMBMessage(e)
+      const { sender, executor, decodedDataType } = normalizeAMBMessageEvent(e)
       return blockList.includes(sender) || blockList.includes(executor) || decodedDataType.manualLane
     }
   } else {
-    return e => normalizeAMBMessage(e).decodedDataType.manualLane
+    return e => normalizeAMBMessageEvent(e).decodedDataType.manualLane
   }
 }
 
 module.exports = {
   deliveredMsgNotProcessed,
   processedMsgNotDelivered,
+  addExecutionStatus,
   normalizeEventInformation,
   eventWithoutReference,
   unclaimedHomeToForeignRequests,

monitor/utils/web3Cache.js

@@ -1,24 +1,93 @@
+const fetch = require('node-fetch')
 const logger = require('../logger')('web3Cache')
 const { readCacheFile, writeCacheFile } = require('./file')
-const { web3Home } = require('./web3')
+const { web3Home, web3Foreign } = require('./web3')
 const { getPastEvents: commonGetPastEvents } = require('../../commons')
 
-const { MONITOR_BRIDGE_NAME, MONITOR_CACHE_EVENTS } = process.env
+const {
+  MONITOR_BRIDGE_NAME,
+  MONITOR_CACHE_EVENTS,
+  MONITOR_FOREIGN_EXPLORER_API,
+  MONITOR_HOME_EXPLORER_API
+} = process.env
 
 let isDirty = false
 
 const homeTxSendersCacheFile = `./cache/${MONITOR_BRIDGE_NAME}/home/txSenders.json`
 const cachedHomeTxSenders = readCacheFile(homeTxSendersCacheFile) || {}
+const foreignTxSendersCacheFile = `./cache/${MONITOR_BRIDGE_NAME}/foreign/txSenders.json`
+const cachedForeignTxSenders = readCacheFile(foreignTxSendersCacheFile) || {}
+const homeIsContractCacheFile = `./cache/${MONITOR_BRIDGE_NAME}/home/isContract.json`
+const cachedHomeIsContract = readCacheFile(homeIsContractCacheFile) || {}
+const foreignIsContractCacheFile = `./cache/${MONITOR_BRIDGE_NAME}/foreign/isContract.json`
+const cachedForeignIsContract = readCacheFile(foreignIsContractCacheFile) || {}
 
 async function getHomeTxSender(txHash) {
   if (!cachedHomeTxSenders[txHash]) {
-    logger.debug(`Fetching sender for tx ${txHash}`)
+    logger.debug(`Fetching sender for home tx ${txHash}`)
     cachedHomeTxSenders[txHash] = (await web3Home.eth.getTransaction(txHash)).from.toLowerCase()
     isDirty = true
   }
   return cachedHomeTxSenders[txHash]
 }
 
+async function getForeignTxSender(txHash) {
+  if (!cachedForeignTxSenders[txHash]) {
+    logger.debug(`Fetching sender for foreign tx ${txHash}`)
+    cachedForeignTxSenders[txHash] = (await web3Foreign.eth.getTransaction(txHash)).from.toLowerCase()
+    isDirty = true
+  }
+  return cachedForeignTxSenders[txHash]
+}
+
+async function isHomeContract(address) {
+  if (typeof cachedHomeIsContract[address] !== 'boolean') {
+    logger.debug(`Fetching home contract code size for tx ${address}`)
+    cachedHomeIsContract[address] = (await web3Home.eth.getCode(address)).length > 2
+    isDirty = true
+  }
+  return cachedHomeIsContract[address]
+}
+
+async function isForeignContract(address) {
+  if (typeof cachedForeignIsContract[address] !== 'boolean') {
+    logger.debug(`Fetching foreign contract code size for tx ${address}`)
+    cachedForeignIsContract[address] = (await web3Foreign.eth.getCode(address)).length > 2
+    isDirty = true
+  }
+  return cachedForeignIsContract[address]
+}
+
+function getPastEventsWithAPIFallback(contract, options) {
+  return commonGetPastEvents(contract, options).catch(async e => {
+    const [api, web3] =
+      options.chain === 'home' ? [MONITOR_HOME_EXPLORER_API, web3Home] : [MONITOR_FOREIGN_EXPLORER_API, web3Foreign]
+    if (api && e.message.includes('exceed maximum block range')) {
+      logger.debug('BLOCK RANGE EXCEED, using fallback to the explorer API')
+
+      const abi = contract.options.jsonInterface.find(abi => abi.type === 'event' && abi.name === options.event)
+
+      const url = new URL(api)
+      url.searchParams.append('module', 'logs')
+      url.searchParams.append('action', 'getLogs')
+      url.searchParams.append('address', contract.options.address)
+      url.searchParams.append('fromBlock', options.fromBlock)
+      url.searchParams.append('toBlock', options.toBlock || 'latest')
+      url.searchParams.append('topic0', web3.eth.abi.encodeEventSignature(abi))
+
+      const logs = await fetch(url).then(res => res.json())
+
+      return logs.result.map(log => ({
+        transactionHash: log.transactionHash,
+        blockNumber: parseInt(log.blockNumber.slice(2), 16),
+        returnValues: web3.eth.abi.decodeLog(abi.inputs, log.data, log.topics.slice(1))
+      }))
+    } else {
+      throw new Error(e)
+    }
+  })
+}
+
 async function getPastEvents(contract, options) {
   if (MONITOR_CACHE_EVENTS !== 'true') {
     return commonGetPastEvents(contract, options)
@@ -61,14 +130,14 @@ async function getPastEvents(contract, options) {
     // requested:      A...B
     // cached:    C...D
     logger.debug(`Fetching events for blocks ${fromBlock}...${toBlock}`)
-    result = await commonGetPastEvents(contract, options)
+    result = await getPastEventsWithAPIFallback(contract, options)
   } else if (fromBlock < cachedFromBlock && toBlock <= cachedToBlock) {
     // requested: A...B
     // cached:      C...D
     logger.debug(`Cache hit for blocks ${cachedFromBlock}...${toBlock}`)
     logger.debug(`Fetching events for blocks ${fromBlock}...${cachedFromBlock - 1}`)
     result = [
-      ...(await commonGetPastEvents(contract, { ...options, toBlock: cachedFromBlock - 1 })),
+      ...(await getPastEventsWithAPIFallback(contract, { ...options, toBlock: cachedFromBlock - 1 })),
       ...cachedEvents.filter(e => e.blockNumber <= toBlock)
     ]
   } else if (fromBlock < cachedFromBlock && cachedToBlock < toBlock) {
@@ -78,9 +147,9 @@ async function getPastEvents(contract, options) {
     logger.debug(`Fetching events for blocks ${fromBlock}...${cachedFromBlock - 1}`)
     logger.debug(`Fetching events for blocks ${cachedToBlock + 1}...${toBlock}`)
     result = [
-      ...(await commonGetPastEvents(contract, { ...options, toBlock: cachedFromBlock - 1 })),
+      ...(await getPastEventsWithAPIFallback(contract, { ...options, toBlock: cachedFromBlock - 1 })),
       ...cachedEvents,
-      ...(await commonGetPastEvents(contract, { ...options, fromBlock: cachedToBlock + 1 }))
+      ...(await getPastEventsWithAPIFallback(contract, { ...options, fromBlock: cachedToBlock + 1 }))
     ]
   } else if (cachedFromBlock <= fromBlock && toBlock <= cachedToBlock) {
     // requested:   A.B
@@ -94,7 +163,7 @@ async function getPastEvents(contract, options) {
     logger.debug(`Fetching events for blocks ${cachedToBlock + 1}...${toBlock}`)
     result = [
       ...cachedEvents.filter(e => e.blockNumber >= fromBlock),
-      ...(await commonGetPastEvents(contract, { ...options, fromBlock: cachedToBlock + 1 }))
+      ...(await getPastEventsWithAPIFallback(contract, { ...options, fromBlock: cachedToBlock + 1 }))
     ]
   } else {
     throw new Error(
@@ -123,11 +192,16 @@ function saveCache() {
   if (isDirty) {
     logger.debug('Saving cache on disk')
     writeCacheFile(homeTxSendersCacheFile, cachedHomeTxSenders)
+    writeCacheFile(homeIsContractCacheFile, cachedHomeIsContract)
+    writeCacheFile(foreignIsContractCacheFile, cachedForeignIsContract)
   }
 }
 
 module.exports = {
   getHomeTxSender,
+  getForeignTxSender,
+  isHomeContract,
+  isForeignContract,
   getPastEvents,
   saveCache
 }

monitor/validators.js

@@ -16,10 +16,13 @@ const {
   COMMON_FOREIGN_GAS_PRICE_SUPPLIER_URL,
   COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE,
   COMMON_FOREIGN_GAS_PRICE_FALLBACK,
-  COMMON_FOREIGN_GAS_PRICE_FACTOR
+  COMMON_FOREIGN_GAS_PRICE_FACTOR,
+  MONITOR_FOREIGN_VALIDATORS_BALANCE_ENABLE,
+  MONITOR_HOME_VALIDATORS_BALANCE_ENABLE
 } = process.env
 const MONITOR_VALIDATOR_HOME_TX_LIMIT = Number(process.env.MONITOR_VALIDATOR_HOME_TX_LIMIT) || 0
 const MONITOR_VALIDATOR_FOREIGN_TX_LIMIT = Number(process.env.MONITOR_VALIDATOR_FOREIGN_TX_LIMIT) || 0
+const MONITOR_TX_NUMBER_THRESHOLD = Number(process.env.MONITOR_TX_NUMBER_THRESHOLD) || 100
 
 const homeGasPriceSupplierOpts = {
   speedType: COMMON_HOME_GAS_PRICE_SPEED_TYPE,
@@ -33,12 +36,6 @@ const foreignGasPriceSupplierOpts = {
   logger
 }
 
-const asyncForEach = async (array, callback) => {
-  for (let index = 0; index < array.length; index++) {
-    await callback(array[index], index, array)
-  }
-}
-
 async function main(bridgeMode) {
   const { HOME_ABI, FOREIGN_ABI } = getBridgeABIs(bridgeMode)
   const homeBridge = new web3Home.eth.Contract(HOME_ABI, COMMON_HOME_BRIDGE_ADDRESS)
@@ -109,53 +106,61 @@ async function main(bridgeMode) {
   }
 
   let validatorsMatch = true
-  logger.debug('calling asyncForEach foreignValidators foreignVBalances')
-  await asyncForEach(foreignValidators, async v => {
-    const balance = await web3Foreign.eth.getBalance(v)
-    if (MONITOR_VALIDATOR_FOREIGN_TX_LIMIT) {
-      const leftTx = Web3Utils.toBN(balance)
-        .div(foreignTxCost)
-        .toString(10)
-      foreignVBalances[v] = {
-        balance: Web3Utils.fromWei(balance),
-        leftTx: Number(leftTx),
-        gasPrice: Number(foreignGasPriceGwei)
+  const foreignValidatorsWithBalanceCheck =
+    typeof MONITOR_FOREIGN_VALIDATORS_BALANCE_ENABLE === 'string'
+      ? MONITOR_FOREIGN_VALIDATORS_BALANCE_ENABLE.split(' ')
+      : foreignValidators
+  logger.debug('getting foreignValidators balances')
+  await Promise.all(
+    foreignValidators.map(async v => {
+      foreignVBalances[v] = {}
+      if (foreignValidatorsWithBalanceCheck.includes(v)) {
+        const balance = await web3Foreign.eth.getBalance(v)
+        foreignVBalances[v].balance = Web3Utils.fromWei(balance)
+        if (MONITOR_VALIDATOR_FOREIGN_TX_LIMIT) {
+          foreignVBalances[v].leftTx = Number(
+            Web3Utils.toBN(balance)
+              .div(foreignTxCost)
+              .toString(10)
+          )
+          foreignVBalances[v].gasPrice = parseFloat(foreignGasPriceGwei)
+        }
       }
-    } else {
-      foreignVBalances[v] = {
-        balance: Web3Utils.fromWei(balance)
-      }
-    }
 
-    if (!homeValidators.includes(v)) {
-      validatorsMatch = false
-      foreignVBalances[v].onlyOnForeign = true
-    }
-  })
-
-  logger.debug('calling asyncForEach homeValidators homeVBalances')
-  await asyncForEach(homeValidators, async v => {
-    const balance = await web3Home.eth.getBalance(v)
-    if (MONITOR_VALIDATOR_HOME_TX_LIMIT) {
-      const leftTx = Web3Utils.toBN(balance)
-        .div(homeTxCost)
-        .toString(10)
-      homeVBalances[v] = {
-        balance: Web3Utils.fromWei(balance),
-        leftTx: Number(leftTx),
-        gasPrice: Number(homeGasPriceGwei)
+      if (!homeValidators.includes(v)) {
+        validatorsMatch = false
+        foreignVBalances[v].onlyOnForeign = true
       }
-    } else {
-      homeVBalances[v] = {
-        balance: Web3Utils.fromWei(balance)
-      }
-    }
+    })
+  )
 
-    if (!foreignValidators.includes(v)) {
-      validatorsMatch = false
-      homeVBalances[v].onlyOnHome = true
-    }
-  })
+  const homeValidatorsWithBalanceCheck =
+    typeof MONITOR_HOME_VALIDATORS_BALANCE_ENABLE === 'string'
+      ? MONITOR_HOME_VALIDATORS_BALANCE_ENABLE.split(' ')
+      : homeValidators
+  logger.debug('calling homeValidators balances')
+  await Promise.all(
+    homeValidators.map(async v => {
+      homeVBalances[v] = {}
+      if (homeValidatorsWithBalanceCheck.includes(v)) {
+        const balance = await web3Home.eth.getBalance(v)
+        homeVBalances[v].balance = Web3Utils.fromWei(balance)
+        if (MONITOR_VALIDATOR_HOME_TX_LIMIT) {
+          homeVBalances[v].leftTx = Number(
+            Web3Utils.toBN(balance)
+              .div(homeTxCost)
+              .toString(10)
+          )
+          homeVBalances[v].gasPrice = parseFloat(homeGasPriceGwei)
+        }
+      }
+
+      if (!foreignValidators.includes(v)) {
+        validatorsMatch = false
+        homeVBalances[v].onlyOnHome = true
+      }
+    })
+  )
 
   logger.debug('calling homeBridgeValidators.methods.requiredSignatures().call()')
   const reqSigHome = await homeBridgeValidators.methods.requiredSignatures().call()
@@ -164,20 +169,22 @@ async function main(bridgeMode) {
   logger.debug('Done')
   return {
     home: {
-      validators: {
-        ...homeVBalances
-      },
+      validators: homeVBalances,
       requiredSignatures: Number(reqSigHome)
     },
     foreign: {
-      validators: {
-        ...foreignVBalances
-      },
+      validators: foreignVBalances,
       requiredSignatures: Number(reqSigForeign)
     },
     requiredSignaturesMatch: reqSigHome === reqSigForeign,
     validatorsMatch,
-    lastChecked: Math.floor(Date.now() / 1000)
+    lastChecked: Math.floor(Date.now() / 1000),
+    homeOk: Object.values(homeVBalances)
+      .filter(vb => typeof vb.leftTx === 'number')
+      .every(vb => vb.leftTx >= MONITOR_TX_NUMBER_THRESHOLD),
+    foreignOk: Object.values(foreignVBalances)
+      .filter(vb => typeof vb.leftTx === 'number')
+      .every(vb => vb.leftTx >= MONITOR_TX_NUMBER_THRESHOLD)
   }
 }
 

oracle-e2e/test/amb.js

@@ -142,7 +142,7 @@ describe('arbitrary message bridging', () => {
             console.error(e)
           })
 
-        await delay(5000)
+        await delay(10000)
 
         const newSignatures = await homeBridge.getPastEvents('SignedForUserRequest', {
           fromBlock: 0,

oracle/.env.example

@@ -14,12 +14,14 @@ COMMON_HOME_GAS_PRICE_SPEED_TYPE=standard
 COMMON_HOME_GAS_PRICE_FALLBACK=1000000000
 ORACLE_HOME_GAS_PRICE_UPDATE_INTERVAL=600000
 COMMON_HOME_GAS_PRICE_FACTOR=1
+ORACLE_HOME_TX_RESEND_INTERVAL=300000
 
 COMMON_FOREIGN_GAS_PRICE_SUPPLIER_URL=https://gasprice.poa.network/
 COMMON_FOREIGN_GAS_PRICE_SPEED_TYPE=standard
 COMMON_FOREIGN_GAS_PRICE_FALLBACK=1000000000
 ORACLE_FOREIGN_GAS_PRICE_UPDATE_INTERVAL=600000
 COMMON_FOREIGN_GAS_PRICE_FACTOR=1
+ORACLE_FOREIGN_TX_RESEND_INTERVAL=1200000
 
 ORACLE_QUEUE_URL=amqp://rabbit
 ORACLE_REDIS_URL=redis://redis

oracle/config/foreign-sender.config.js

@@ -1,6 +1,9 @@
 const baseConfig = require('./base.config')
 
-const { web3Foreign, web3ForeignRedundant } = require('../src/services/web3')
+const { DEFAULT_TRANSACTION_RESEND_INTERVAL } = require('../src/utils/constants')
+const { web3Foreign, web3ForeignRedundant, web3ForeignFallback } = require('../src/services/web3')
+
+const { ORACLE_FOREIGN_TX_RESEND_INTERVAL } = process.env
 
 module.exports = {
   ...baseConfig.bridgeConfig,
@@ -9,5 +12,7 @@ module.exports = {
   id: 'foreign',
   name: 'sender-foreign',
   web3: web3Foreign,
-  web3Redundant: web3ForeignRedundant
+  web3Redundant: web3ForeignRedundant,
+  web3Fallback: web3ForeignFallback,
+  resendInterval: parseInt(ORACLE_FOREIGN_TX_RESEND_INTERVAL, 10) || DEFAULT_TRANSACTION_RESEND_INTERVAL
 }

oracle/config/home-sender.config.js

@@ -1,6 +1,9 @@
 const baseConfig = require('./base.config')
 
-const { web3Home, web3HomeRedundant } = require('../src/services/web3')
+const { DEFAULT_TRANSACTION_RESEND_INTERVAL } = require('../src/utils/constants')
+const { web3Home, web3HomeRedundant, web3HomeFallback } = require('../src/services/web3')
+
+const { ORACLE_HOME_TX_RESEND_INTERVAL } = process.env
 
 module.exports = {
   ...baseConfig.bridgeConfig,
@@ -9,5 +12,7 @@ module.exports = {
   id: 'home',
   name: 'sender-home',
   web3: web3Home,
-  web3Redundant: web3HomeRedundant
+  web3Redundant: web3HomeRedundant,
+  web3Fallback: web3HomeFallback,
+  resendInterval: parseInt(ORACLE_HOME_TX_RESEND_INTERVAL, 10) || DEFAULT_TRANSACTION_RESEND_INTERVAL
 }

oracle/src/sender.js

@@ -30,6 +30,8 @@ const config = require(path.join('../config/', process.argv[2]))
 
 const web3Instance = config.web3
 const web3Redundant = ORACLE_TX_REDUNDANCY === 'true' ? config.web3Redundant : config.web3
+const { web3Fallback } = config
+
 const nonceKey = `${config.id}:nonce`
 let chainId = 0
 
@@ -45,6 +47,7 @@ async function initialize() {
     connectSenderToQueue({
       queueName: config.queue,
       oldQueueName: config.oldQueue,
+      resendInterval: config.resendInterval,
       cb: options => {
         if (config.maxProcessingTime) {
           return watchdog(() => main(options), config.maxProcessingTime, () => {
@@ -128,7 +131,7 @@ async function main({ msg, ackMsg, nackMsg, channel, scheduleForRetry, scheduleT
 
       try {
         if (isResend) {
-          const tx = await web3Instance.eth.getTransaction(job.txHash)
+          const tx = await web3Fallback.eth.getTransaction(job.txHash)
 
           if (tx && tx.blockNumber !== null) {
             logger.debug(`Transaction ${job.txHash} was successfully mined`)
@@ -171,15 +174,18 @@ async function main({ msg, ackMsg, nackMsg, channel, scheduleForRetry, scheduleT
           `Tx Failed for event Tx ${job.transactionReference}.`,
           e.message
         )
-        if (!e.message.toLowerCase().includes('transaction with the same hash was already imported')) {
-          if (isResend) {
-            resendJobs.push(job)
-          } else {
-            failedTx.push(job)
-          }
+
+        const message = e.message.toLowerCase()
+        if (isResend || message.includes('transaction with the same hash was already imported')) {
+          resendJobs.push(job)
+        } else {
+          // if initial transaction sending has failed not due to the same hash error
+          // send it to the failed tx queue
+          // this will result in the sooner resend attempt than if using resendJobs
+          failedTx.push(job)
         }
 
-        if (e.message.toLowerCase().includes('insufficient funds')) {
+        if (message.includes('insufficient funds')) {
           insufficientFunds = true
           const currentBalance = await web3Instance.eth.getBalance(ORACLE_VALIDATOR_ADDRESS)
           minimumBalance = gasLimit.multipliedBy(gasPrice)
@@ -202,7 +208,7 @@ async function main({ msg, ackMsg, nackMsg, channel, scheduleForRetry, scheduleT
       await scheduleForRetry(failedTx, msg.properties.headers['x-retries'])
     }
     if (resendJobs.length) {
-      logger.info(`Sending ${resendJobs.length} Tx Delayed Resend Requests to Queue`)
+      logger.info({ delay: config.resendInterval }, `Sending ${resendJobs.length} Tx Delayed Resend Requests to Queue`)
       await scheduleTransactionResend(resendJobs)
     }
     ackMsg(msg)

oracle/src/services/HttpListProvider.js

@@ -1,7 +1,12 @@
 const fetch = require('node-fetch')
 const promiseRetry = require('promise-retry')
+const { FALLBACK_RPC_URL_SWITCH_TIMEOUT } = require('../utils/constants')
+
+// From EIP-1474 and Infura documentation
+const JSONRPC_ERROR_CODES = [-32603, -32002, -32005]
 
 const defaultOptions = {
+  name: 'main',
   requestTimeout: 0,
   retry: {
     retries: 0
@@ -27,23 +32,74 @@ function HttpListProvider(urls, options = {}) {
   this.urls = urls
   this.options = { ...defaultOptions, ...options }
   this.currentIndex = 0
+  this.lastTimeUsedPrimary = 0
+  this.logger = {
+    debug: () => {},
+    info: () => {}
+  }
+}
+
+HttpListProvider.prototype.setLogger = function(logger) {
+  this.logger = logger.child({ module: `HttpListProvider:${this.options.name}` })
 }
 
 HttpListProvider.prototype.send = async function send(payload, callback) {
+  // if fallback URL is being used for too long, switch back to the primary URL
+  if (this.currentIndex > 0 && Date.now() - this.lastTimeUsedPrimary > FALLBACK_RPC_URL_SWITCH_TIMEOUT) {
+    this.logger.info(
+      { oldURL: this.urls[this.currentIndex], newURL: this.urls[0] },
+      'Switching back to the primary JSON-RPC URL'
+    )
+    this.currentIndex = 0
+  }
+
   // save the currentIndex to avoid race condition
   const { currentIndex } = this
 
   try {
-    const [result, index] = await promiseRetry(retry => {
-      return trySend(payload, this.urls, currentIndex, this.options).catch(retry)
-    }, this.options.retry)
-    this.currentIndex = index
+    const [result, index] = await promiseRetry(
+      retry => this.trySend(payload, currentIndex).catch(retry),
+      this.options.retry
+    )
+
+    // if some of URLs failed to respond, current URL index is updated to the first URL that responded
+    if (currentIndex !== index) {
+      this.logger.info(
+        { index, oldURL: this.urls[currentIndex], newURL: this.urls[index] },
+        'Switching to fallback JSON-RPC URL'
+      )
+      this.currentIndex = index
+    }
     callback(null, result)
   } catch (e) {
     callback(e)
   }
 }
 
+HttpListProvider.prototype.trySend = async function(payload, initialIndex) {
+  const errors = []
+
+  for (let count = 0; count < this.urls.length; count++) {
+    const index = (initialIndex + count) % this.urls.length
+
+    // when request is being sent to the primary URL, the corresponding time marker is updated
+    if (index === 0) {
+      this.lastTimeUsedPrimary = Date.now()
+    }
+
+    const url = this.urls[index]
+    try {
+      const result = await send(url, payload, this.options)
+      return [result, index]
+    } catch (e) {
+      this.logger.debug({ index, url, method: payload.method, error: e.message }, `JSON-RPC has failed to respond`)
+      errors.push(e)
+    }
+  }
+
+  throw new HttpListProviderError('Request failed for all urls', errors)
+}
+
 function send(url, payload, options) {
   return fetch(url, {
     headers: {
@@ -61,24 +117,15 @@ function send(url, payload, options) {
       }
     })
     .then(response => response.json())
-}
-
-async function trySend(payload, urls, initialIndex, options) {
-  const errors = []
-
-  let index = initialIndex
-  for (let count = 0; count < urls.length; count++) {
-    const url = urls[index]
-    try {
-      const result = await send(url, payload, options)
-      return [result, index]
-    } catch (e) {
-      errors.push(e)
-    }
-    index = (index + 1) % urls.length
-  }
-
-  throw new HttpListProviderError('Request failed for all urls', errors)
+    .then(response => {
+      if (
+        response.error &&
+        (JSONRPC_ERROR_CODES.includes(response.error.code) || response.error.message.includes('ancient block'))
+      ) {
+        throw new Error(response.error.message)
+      }
+      return response
+    })
 }
 
 module.exports = {

oracle/src/services/RedundantHttpListProvider.js

@@ -13,7 +13,10 @@ function RedundantHttpListProvider(urls, options = {}) {
 
   this.urls = urls
   this.options = { ...defaultOptions, ...options }
-  this.currentIndex = 0
+}
+
+RedundantHttpListProvider.prototype.setLogger = function(logger) {
+  this.logger = logger.child({ module: `RedundantHttpListProvider:${this.options.name}` })
 }
 
 RedundantHttpListProvider.prototype.send = async function send(payload, callback) {

oracle/src/services/amqpClient.js

@@ -5,7 +5,6 @@ const connection = require('amqp-connection-manager').connect(process.env.ORACLE
 const logger = require('./logger')
 const { getRetrySequence } = require('../utils/utils')
 const {
-  TRANSACTION_RESEND_TIMEOUT,
   SENDER_QUEUE_MAX_PRIORITY,
   SENDER_QUEUE_SEND_PRIORITY,
   SENDER_QUEUE_CHECK_STATUS_PRIORITY
@@ -48,7 +47,7 @@ function connectWatcherToQueue({ queueName, workerQueue, cb }) {
   cb({ sendToQueue, sendToWorker, channel: channelWrapper })
 }
 
-function connectSenderToQueue({ queueName, oldQueueName, cb }) {
+function connectSenderToQueue({ queueName, oldQueueName, cb, resendInterval }) {
   const deadLetterExchange = `${queueName}-retry`
 
   async function resendMessagesToNewQueue(channel) {
@@ -97,7 +96,8 @@ function connectSenderToQueue({ queueName, oldQueueName, cb }) {
             channelWrapper,
             channel,
             queueName,
-            deadLetterExchange
+            deadLetterExchange,
+            delay: resendInterval
           })
         }
       })
@@ -164,13 +164,13 @@ async function generateRetry({ data, msgRetries, channelWrapper, channel, queueN
   })
 }
 
-async function generateTransactionResend({ data, channelWrapper, channel, queueName, deadLetterExchange }) {
-  const retryQueue = `${queueName}-check-tx-status`
+async function generateTransactionResend({ data, channelWrapper, channel, queueName, deadLetterExchange, delay }) {
+  const retryQueue = `${queueName}-check-tx-status-${delay}`
   await channel.assertQueue(retryQueue, {
     durable: true,
     deadLetterExchange,
-    messageTtl: TRANSACTION_RESEND_TIMEOUT,
-    expires: TRANSACTION_RESEND_TIMEOUT * 10,
+    messageTtl: delay,
+    expires: delay * 10,
     maxPriority: SENDER_QUEUE_MAX_PRIORITY
   })
   await channelWrapper.sendToQueue(retryQueue, data, {

oracle/src/services/logger.js

@@ -1,5 +1,13 @@
 const pino = require('pino')
 const path = require('path')
+const {
+  web3Home,
+  web3Foreign,
+  web3HomeFallback,
+  web3ForeignFallback,
+  web3HomeRedundant,
+  web3ForeignRedundant
+} = require('./web3')
 
 const config = process.env.NODE_ENV !== 'test' ? require(path.join('../../config/', process.argv[2])) : {}
 
@@ -15,4 +23,11 @@ const logger = pino({
       : {}
 })
 
+web3Home.currentProvider.setLogger(logger)
+web3Foreign.currentProvider.setLogger(logger)
+web3HomeFallback.currentProvider.setLogger(logger)
+web3ForeignFallback.currentProvider.setLogger(logger)
+web3HomeRedundant.currentProvider.setLogger(logger)
+web3ForeignRedundant.currentProvider.setLogger(logger)
+
 module.exports = logger

oracle/src/services/web3.js

@@ -41,15 +41,37 @@ const web3Home = new Web3(homeProvider)
 const foreignProvider = new HttpListProvider(foreignUrls, foreignOptions)
 const web3Foreign = new Web3(foreignProvider)
 
-const redundantHomeProvider = new RedundantHttpListProvider(homeUrls, homeOptions)
-const web3HomeRedundant = new Web3(redundantHomeProvider)
+// secondary fallback providers are intended to be used in places where
+// it is more likely that RPC calls to the local non-archive nodes can fail
+// e.g. for checking status of the old transaction via eth_getTransactionByHash
+let web3HomeFallback = web3Home
+let web3ForeignFallback = web3Foreign
 
-const redundantForeignProvider = new RedundantHttpListProvider(foreignUrls, foreignOptions)
-const web3ForeignRedundant = new Web3(redundantForeignProvider)
+// secondary redundant providers are intended to be used in places where
+// the result of a single RPC request can be lost
+// e.g. for sending transactions eth_sendRawTransaction
+let web3HomeRedundant = web3Home
+let web3ForeignRedundant = web3Foreign
+
+if (homeUrls.length > 1) {
+  const provider = new HttpListProvider(homeUrls, { ...homeOptions, name: 'fallback' })
+  web3HomeFallback = new Web3(provider)
+  const redundantProvider = new RedundantHttpListProvider(homeUrls, { ...homeOptions, name: 'redundant' })
+  web3HomeRedundant = new Web3(redundantProvider)
+}
+
+if (foreignUrls.length > 1) {
+  const provider = new HttpListProvider(foreignUrls, { ...foreignOptions, name: 'fallback' })
+  web3ForeignFallback = new Web3(provider)
+  const redundantProvider = new RedundantHttpListProvider(foreignUrls, { ...foreignOptions, name: 'redundant' })
+  web3ForeignRedundant = new Web3(redundantProvider)
+}
 
 module.exports = {
   web3Home,
   web3Foreign,
   web3HomeRedundant,
-  web3ForeignRedundant
+  web3ForeignRedundant,
+  web3HomeFallback,
+  web3ForeignFallback
 }

oracle/src/utils/constants.js

@@ -23,7 +23,8 @@ module.exports = {
     MIN: 1,
     MAX: 1000
   },
-  TRANSACTION_RESEND_TIMEOUT: 20 * 60 * 1000,
+  DEFAULT_TRANSACTION_RESEND_INTERVAL: 20 * 60 * 1000,
+  FALLBACK_RPC_URL_SWITCH_TIMEOUT: 60 * 60 * 1000,
   SENDER_QUEUE_MAX_PRIORITY: 10,
   SENDER_QUEUE_SEND_PRIORITY: 5,
   SENDER_QUEUE_CHECK_STATUS_PRIORITY: 1

ui/docker-compose.yml

@@ -8,7 +8,7 @@ services:
     ports:
     - "${UI_PORT}:${UI_PORT}"
     env_file: ./.env
-    environment: 
+    environment:
       - NODE_ENV=production
     restart: unless-stopped
     entrypoint: yarn start

yarn.lock

@@ -2,58 +2,65 @@
 # yarn lockfile v1
 
 
-"@0x/assert@^2.1.6":
-  version "2.1.6"
-  resolved "https://registry.yarnpkg.com/@0x/assert/-/assert-2.1.6.tgz#61c5854b555bca1f1f0503754f2fd0169bee0ef1"
-  integrity sha512-Gu8eBnFdEuIAH2GubWYOSVz/BIoRccKof68AziduYDHxh4nSPM6NUH52xtfUGk4nXljiOXU1XHZJhcjTObI+8Q==
+"@0x/assert@^3.0.17":
+  version "3.0.17"
+  resolved "https://registry.yarnpkg.com/@0x/assert/-/assert-3.0.17.tgz#dc15d038ed085744cb375044218285368f0cbfa8"
+  integrity sha512-NlII5893GQ9FZ+Lr+N2bSK3bQyxTBl8JUd7zeNltRPIsGco609bzG4Zat4zhlL3e/zhWY6zmzfaXK6spj4WsdQ==
   dependencies:
-    "@0x/json-schemas" "^4.0.2"
-    "@0x/typescript-typings" "^4.3.0"
-    "@0x/utils" "^4.5.2"
+    "@0x/json-schemas" "^5.3.3"
+    "@0x/typescript-typings" "^5.1.5"
+    "@0x/utils" "^6.1.0"
+    "@types/node" "12.12.54"
     lodash "^4.17.11"
     valid-url "^1.0.9"
 
-"@0x/dev-utils@^2.3.3":
-  version "2.3.3"
-  resolved "https://registry.yarnpkg.com/@0x/dev-utils/-/dev-utils-2.3.3.tgz#9b6df00fea357fa6da02b35ca93fc89d100e1992"
-  integrity sha512-Pi664W/jj1U6WU+kHEPyKpflBnmKRsclB69RaL7wpnvOOFjAPhFV2/0FvIZ25w62rMzKEpfD1/1NcZ7NjAk7OQ==
+"@0x/dev-utils@^4.0.2":
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/@0x/dev-utils/-/dev-utils-4.0.2.tgz#04c925c811d30ef7fb11e2b96ede4a0f9b74aab1"
+  integrity sha512-d1T6rOlpgPFC9fyAayJLTWZFs4xXmVOzemZ2Pvym3JHj/Jpo2LuTnK5sOlRzBFGA0IG40bwy6WQofDVVeWk1bw==
   dependencies:
-    "@0x/subproviders" "^5.0.4"
-    "@0x/types" "^2.4.3"
-    "@0x/typescript-typings" "^4.3.0"
-    "@0x/utils" "^4.5.2"
-    "@0x/web3-wrapper" "^6.0.13"
+    "@0x/subproviders" "^6.2.0"
+    "@0x/types" "^3.3.0"
+    "@0x/typescript-typings" "^5.1.5"
+    "@0x/utils" "^6.1.0"
+    "@0x/web3-wrapper" "^7.2.8"
+    "@types/node" "12.12.54"
     "@types/web3-provider-engine" "^14.0.0"
     chai "^4.0.1"
-    ethereum-types "^2.1.6"
+    chai-as-promised "^7.1.0"
+    chai-bignumber "^3.0.0"
+    dirty-chai "^2.0.1"
+    ethereum-types "^3.3.3"
     lodash "^4.17.11"
+    web3-provider-engine "14.0.6"
 
-"@0x/json-schemas@^4.0.2":
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/@0x/json-schemas/-/json-schemas-4.0.2.tgz#6f7c1dcde04d3acc3e8ca2f24177b9705c10e772"
-  integrity sha512-JHOwESZeWKAzT5Z42ZNvOvQUQ5vuRIFQWS0FNjYwV8Cv4/dRlLHd7kwxxsvlm9NxgXnOW0ddEDBbVGxhVSYNIg==
+"@0x/json-schemas@^5.3.3":
+  version "5.3.3"
+  resolved "https://registry.yarnpkg.com/@0x/json-schemas/-/json-schemas-5.3.3.tgz#4b9de100385ca23b0cd58a454165df2e9758e453"
+  integrity sha512-u2DTXn4KRqOhlJUmFkIAqeUYIUKbYx2E+Hx6t7LhV+eIPrU5FSkk6Hv3UwYASARlMyqaWucBbGMBNCYyiVShGA==
   dependencies:
-    "@0x/typescript-typings" "^4.3.0"
-    "@types/node" "*"
+    "@0x/typescript-typings" "^5.1.5"
+    "@types/node" "12.12.54"
     jsonschema "^1.2.0"
     lodash.values "^4.3.0"
 
-"@0x/sol-compiler@^3.1.15":
-  version "3.1.15"
-  resolved "https://registry.yarnpkg.com/@0x/sol-compiler/-/sol-compiler-3.1.15.tgz#aaaad55008dddd69ad1e3226aa4a2832e0dd13b3"
-  integrity sha512-IobhcQ/whFRL942/ykKc0fV6/YstHhvnQJ0noUZ9GabMDtaBlW6k5vAerSkXZU/YyOd8sD9nw7QSm295D6HoTA==
+"@0x/sol-compiler@^4.3.1":
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/@0x/sol-compiler/-/sol-compiler-4.3.1.tgz#dce7dea760c6032946783c2411dbb57a2c74dcca"
+  integrity sha512-YXoNkGG17fZKu/SKs/E8eNedTbptORnbMHhyCwt5Ok3xvTDW83GCVkhi+T+ohuzpUBU12kcCbDbUqYxiakLKwQ==
   dependencies:
-    "@0x/assert" "^2.1.6"
-    "@0x/json-schemas" "^4.0.2"
-    "@0x/sol-resolver" "^2.0.11"
-    "@0x/types" "^2.4.3"
-    "@0x/typescript-typings" "^4.3.0"
-    "@0x/utils" "^4.5.2"
-    "@0x/web3-wrapper" "^6.0.13"
+    "@0x/assert" "^3.0.17"
+    "@0x/json-schemas" "^5.3.3"
+    "@0x/sol-resolver" "^3.1.5"
+    "@0x/types" "^3.3.0"
+    "@0x/typescript-typings" "^5.1.5"
+    "@0x/utils" "^6.1.0"
+    "@0x/web3-wrapper" "^7.2.8"
+    "@types/node" "12.12.54"
     "@types/yargs" "^11.0.0"
     chalk "^2.3.0"
     chokidar "^3.0.2"
-    ethereum-types "^2.1.6"
+    ethereum-types "^3.3.3"
     ethereumjs-util "^5.1.1"
     lodash "^4.17.11"
     mkdirp "^0.5.1"
@@ -65,59 +72,63 @@
     web3-eth-abi "^1.0.0-beta.24"
     yargs "^10.0.3"
 
-"@0x/sol-coverage@^3.0.11":
-  version "3.0.12"
-  resolved "https://registry.yarnpkg.com/@0x/sol-coverage/-/sol-coverage-3.0.12.tgz#4ca602495f7bcc4f045854850cd7f20fdf64e984"
-  integrity sha512-V4Iq8LU8HWNctVCt+gMHKcZ0moiawpna7bd3SWQuiQIig0iNpXBBCQl9SEIwpboTcv4Xhzo4cZuCGsWwKAQSpw==
+"@0x/sol-coverage@^4.0.10":
+  version "4.0.20"
+  resolved "https://registry.yarnpkg.com/@0x/sol-coverage/-/sol-coverage-4.0.20.tgz#1633ac9331fbc2cb46beb17ada20d3f7ba525c7b"
+  integrity sha512-VJn/cr1be9jHFGUlJPiZ7MxDGwh6DdmOYKK7+PSbzATW9NcpKuR0uatIcWNrrD3TJfeA2qAdd6bpcqf91/5MgA==
   dependencies:
-    "@0x/sol-tracing-utils" "^6.0.19"
-    "@0x/subproviders" "^5.0.4"
-    "@0x/typescript-typings" "^4.3.0"
+    "@0x/sol-tracing-utils" "^7.1.10"
+    "@0x/subproviders" "^6.2.0"
+    "@0x/typescript-typings" "^5.1.5"
     "@types/minimatch" "^3.0.3"
-    ethereum-types "^2.1.6"
+    "@types/node" "12.12.54"
+    ethereum-types "^3.3.3"
     lodash "^4.17.11"
     minimatch "^3.0.4"
     web3-provider-engine "14.0.6"
 
-"@0x/sol-resolver@^2.0.11":
-  version "2.0.11"
-  resolved "https://registry.yarnpkg.com/@0x/sol-resolver/-/sol-resolver-2.0.11.tgz#282d545a423baf0d478c498fd3adf607339d5504"
-  integrity sha512-TGvkuWoEMghPB4OZaPz49OJ/J0cw/I3yV7VLbE/OeN0K/J2P8uOkzhNgWLOVSi8EK3hcJ1JVc0iDSkCnzGj4xQ==
+"@0x/sol-resolver@^3.1.5":
+  version "3.1.5"
+  resolved "https://registry.yarnpkg.com/@0x/sol-resolver/-/sol-resolver-3.1.5.tgz#f3c94bd6d522f72091f059f60af255d7135e5e6c"
+  integrity sha512-QO6kGPmwdtOX7LSTHVhYXWKFam2AqGGOg4CJH0AlOF7dTuwc7dDNlmeSymIkoIeOUoFu9nk+IC0s9spL0gAaZg==
   dependencies:
-    "@0x/types" "^2.4.3"
-    "@0x/typescript-typings" "^4.3.0"
+    "@0x/types" "^3.3.0"
+    "@0x/typescript-typings" "^5.1.5"
+    "@types/node" "12.12.54"
     lodash "^4.17.11"
 
-"@0x/sol-trace@^2.0.19":
-  version "2.0.20"
-  resolved "https://registry.yarnpkg.com/@0x/sol-trace/-/sol-trace-2.0.20.tgz#4c14af3f5c30ab50882e9667926ca9533446711d"
-  integrity sha512-lkw+8l+InqXKoyVFPCxdLA0oZnLLPvmpFm+lIJwEkPjrbwIyhvQbwSwyzPW/1XUWj0wIwWOpq6PSyofWZgt4KA==
+"@0x/sol-trace@^3.0.10":
+  version "3.0.20"
+  resolved "https://registry.yarnpkg.com/@0x/sol-trace/-/sol-trace-3.0.20.tgz#917fe73f0ace99112591776726db5880dff66ce5"
+  integrity sha512-wDHJrY5r/xf9YCbjjY4Xdl6Ie0HXzNofI2vVDGq4e9NM6aXcbN2dpsHk2jMhX+lWt0z21atpzFxaD7M9y5B4jA==
   dependencies:
-    "@0x/sol-tracing-utils" "^6.0.19"
-    "@0x/subproviders" "^5.0.4"
-    "@0x/typescript-typings" "^4.3.0"
+    "@0x/sol-tracing-utils" "^7.1.10"
+    "@0x/subproviders" "^6.2.0"
+    "@0x/typescript-typings" "^5.1.5"
+    "@types/node" "12.12.54"
     chalk "^2.3.0"
-    ethereum-types "^2.1.6"
+    ethereum-types "^3.3.3"
     ethereumjs-util "^5.1.1"
     lodash "^4.17.11"
     loglevel "^1.6.1"
     web3-provider-engine "14.0.6"
 
-"@0x/sol-tracing-utils@^6.0.19":
-  version "6.0.19"
-  resolved "https://registry.yarnpkg.com/@0x/sol-tracing-utils/-/sol-tracing-utils-6.0.19.tgz#3c119c7e5b6d2bd1c94663985b7641aec85ef625"
-  integrity sha512-5tQOEo+dUYWiclT7UDy5IRm/EPEwDzCqAY3J8l0ecIsssBk0r2YLKKf/ugWkdwASGeAxiepjYpC+mxcxOT6yDA==
+"@0x/sol-tracing-utils@^7.1.10":
+  version "7.1.10"
+  resolved "https://registry.yarnpkg.com/@0x/sol-tracing-utils/-/sol-tracing-utils-7.1.10.tgz#2c0604235c924372580f92c5afd403b49fb108f1"
+  integrity sha512-i/YLYWplzsA5MTrvCsf5GawQsSVMQY2pKlmLqN+IQAWmthd3tj6jzh5AorJzgfc7DVYyC7/8WBJcL8yHRXyrxA==
   dependencies:
-    "@0x/dev-utils" "^2.3.3"
-    "@0x/sol-compiler" "^3.1.15"
-    "@0x/sol-resolver" "^2.0.11"
-    "@0x/subproviders" "^5.0.4"
-    "@0x/typescript-typings" "^4.3.0"
-    "@0x/utils" "^4.5.2"
-    "@0x/web3-wrapper" "^6.0.13"
+    "@0x/dev-utils" "^4.0.2"
+    "@0x/sol-compiler" "^4.3.1"
+    "@0x/sol-resolver" "^3.1.5"
+    "@0x/subproviders" "^6.2.0"
+    "@0x/typescript-typings" "^5.1.5"
+    "@0x/utils" "^6.1.0"
+    "@0x/web3-wrapper" "^7.2.8"
+    "@types/node" "12.12.54"
     "@types/solidity-parser-antlr" "^0.2.3"
     chalk "^2.3.0"
-    ethereum-types "^2.1.6"
+    ethereum-types "^3.3.3"
     ethereumjs-util "^5.1.1"
     ethers "~4.0.4"
     glob "^7.1.2"
@@ -130,26 +141,27 @@
     solc "^0.5.5"
     solidity-parser-antlr "^0.4.2"
 
-"@0x/subproviders@^5.0.3", "@0x/subproviders@^5.0.4":
-  version "5.0.4"
-  resolved "https://registry.yarnpkg.com/@0x/subproviders/-/subproviders-5.0.4.tgz#e4b165634ef6a50c4bd41baacf0dbd2a9390c2f8"
-  integrity sha512-1LiGcOXkP5eUOl/0JRqkrqYtCvIL4NJj1GbbLIRq4TvkfqrRbF7zJM2SaayxPo3Z48zVsqk0ZE5+RrNAdK/Rrg==
+"@0x/subproviders@^6.1.1", "@0x/subproviders@^6.2.0":
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/@0x/subproviders/-/subproviders-6.2.0.tgz#75ad3cb8b835aa0c0e1d2a7e150f955ec6b32658"
+  integrity sha512-ugux7Lzy4zmoVKlfHcj7/G6dWL3V7jMJmFj0WsmvrEIK/+9R1VyBTrP4IRm7O22ps319ZJvUYDlZc4fjKmQMEw==
   dependencies:
-    "@0x/assert" "^2.1.6"
-    "@0x/types" "^2.4.3"
-    "@0x/typescript-typings" "^4.3.0"
-    "@0x/utils" "^4.5.2"
-    "@0x/web3-wrapper" "^6.0.13"
+    "@0x/assert" "^3.0.17"
+    "@0x/types" "^3.3.0"
+    "@0x/typescript-typings" "^5.1.5"
+    "@0x/utils" "^6.1.0"
+    "@0x/web3-wrapper" "^7.2.8"
     "@ledgerhq/hw-app-eth" "^4.3.0"
     "@ledgerhq/hw-transport-u2f" "4.24.0"
     "@types/hdkey" "^0.7.0"
+    "@types/node" "12.12.54"
     "@types/web3-provider-engine" "^14.0.0"
     bip39 "^2.5.0"
     bn.js "^4.11.8"
-    ethereum-types "^2.1.6"
+    ethereum-types "^3.3.3"
     ethereumjs-tx "^1.3.5"
     ethereumjs-util "^5.1.1"
-    ganache-core "^2.6.0"
+    ganache-core "^2.10.2"
     hdkey "^0.7.1"
     json-rpc-error "2.0.0"
     lodash "^4.17.11"
@@ -158,55 +170,57 @@
   optionalDependencies:
     "@ledgerhq/hw-transport-node-hid" "^4.3.0"
 
-"@0x/types@^2.4.3":
-  version "2.4.3"
-  resolved "https://registry.yarnpkg.com/@0x/types/-/types-2.4.3.tgz#ea014889789e9013fdf48ce97b79f2c016e10fb3"
-  integrity sha512-3z4ca9fb9pyTu9lJhTSll5EuEthkA3tLAayyZixCoCnwi4ok6PJ83PnMMsSxlRY2iXr7QGbrQr6nU64YWk2WjA==
+"@0x/types@^3.3.0":
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/@0x/types/-/types-3.3.0.tgz#98c5ee91b66c7cc1719cfece6c3e5477c90bf9c5"
+  integrity sha512-vne28SbgFB/x5yrTqPsSn38IIv8SQWkQ5oZzzq3/d/13kxE64tTNE+UBOd3Jhax6q1w0birF4XW1iiJlz2yPuQ==
   dependencies:
-    "@types/node" "*"
-    bignumber.js "~8.0.2"
-    ethereum-types "^2.1.6"
+    "@types/node" "12.12.54"
+    bignumber.js "~9.0.0"
+    ethereum-types "^3.3.3"
 
-"@0x/typescript-typings@^4.3.0":
-  version "4.3.0"
-  resolved "https://registry.yarnpkg.com/@0x/typescript-typings/-/typescript-typings-4.3.0.tgz#4813a996ac5101841d1c22f4aa1738ab56168857"
-  integrity sha512-6IH2JyKyl33+40tJ5rEhaMPTS2mVuRvoNmoXlCd/F0GPYSsDHMGObIXOkx+Qsw5SyCmqNs/3CTLeeCCqiSUdaw==
+"@0x/typescript-typings@^5.1.5":
+  version "5.1.5"
+  resolved "https://registry.yarnpkg.com/@0x/typescript-typings/-/typescript-typings-5.1.5.tgz#dd0ad20ef42dad9d054886fd1da72839145b5863"
+  integrity sha512-I55QfQNJPo8tG6j/PsTTgbeaIMbkGs5vdwVVfFkxSE8rXIEh4Qsra3JXke/7EpFZvhoUFngX4qdQyK2kI4V3sw==
   dependencies:
     "@types/bn.js" "^4.11.0"
+    "@types/node" "12.12.54"
     "@types/react" "*"
-    bignumber.js "~8.0.2"
-    ethereum-types "^2.1.6"
+    bignumber.js "~9.0.0"
+    ethereum-types "^3.3.3"
     popper.js "1.14.3"
 
-"@0x/utils@^4.5.2":
-  version "4.5.2"
-  resolved "https://registry.yarnpkg.com/@0x/utils/-/utils-4.5.2.tgz#6cc89f2d0dda341e0fb4e76049a35abfb67a4ac5"
-  integrity sha512-NWfNcvyiOhouk662AWxX0ZVe4ednBZJS9WZT/by3DBCY/WvN7WHMpEy9M5rBCxO+JJndLYeB5eBztDp7W+Ytkw==
+"@0x/utils@^6.1.0":
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/@0x/utils/-/utils-6.1.0.tgz#df5750927d8e2b82f6709d666e7fcfca0f33f66e"
+  integrity sha512-Yrp4eonmFPgJcP1Bnl/xiCMEfiLVrYg3WxKJqMN6AmuW9VZeBhSJDqTMv5Et3qhFTBaY5YMWiISRYeJoVdMfDw==
   dependencies:
-    "@0x/types" "^2.4.3"
-    "@0x/typescript-typings" "^4.3.0"
-    "@types/node" "*"
+    "@0x/types" "^3.3.0"
+    "@0x/typescript-typings" "^5.1.5"
+    "@types/node" "12.12.54"
     abortcontroller-polyfill "^1.1.9"
-    bignumber.js "~8.0.2"
+    bignumber.js "~9.0.0"
     chalk "^2.3.0"
     detect-node "2.0.3"
-    ethereum-types "^2.1.6"
+    ethereum-types "^3.3.3"
     ethereumjs-util "^5.1.1"
     ethers "~4.0.4"
     isomorphic-fetch "2.2.1"
     js-sha3 "^0.7.0"
     lodash "^4.17.11"
 
-"@0x/web3-wrapper@^6.0.13":
-  version "6.0.13"
-  resolved "https://registry.yarnpkg.com/@0x/web3-wrapper/-/web3-wrapper-6.0.13.tgz#2e666221bd44ceebe02762028214d4aa41ad7247"
-  integrity sha512-LQjKBCCNdkJuhcJld+/sy+G0+sJu5qp9VDNNwJGLDxWIJpgoshhUpBPi7vUnZ79UY4SYuNcC4yM9yI61cs7ZiA==
+"@0x/web3-wrapper@^7.2.8":
+  version "7.2.8"
+  resolved "https://registry.yarnpkg.com/@0x/web3-wrapper/-/web3-wrapper-7.2.8.tgz#7df4c52e358594338f8dbe76b1490a5c4c423633"
+  integrity sha512-T0HxSm3Kzs+fzCZI7Yk7MAjfp5vi+AMAHBbuXxJfzr3L6SFObSyHy6TPQ9NMNGrrbJi6UIOLPOX8W0P7hm0XtA==
   dependencies:
-    "@0x/assert" "^2.1.6"
-    "@0x/json-schemas" "^4.0.2"
-    "@0x/typescript-typings" "^4.3.0"
-    "@0x/utils" "^4.5.2"
-    ethereum-types "^2.1.6"
+    "@0x/assert" "^3.0.17"
+    "@0x/json-schemas" "^5.3.3"
+    "@0x/typescript-typings" "^5.1.5"
+    "@0x/utils" "^6.1.0"
+    "@types/node" "12.12.54"
+    ethereum-types "^3.3.3"
     ethereumjs-util "^5.1.1"
     ethers "~4.0.4"
     lodash "^4.17.11"
@@ -1391,7 +1405,7 @@
     "@ethersproject/bytes" ">=5.0.0-beta.129"
     js-sha3 "0.5.7"
 
-"@ethersproject/keccak256@^5.0.3":
+"@ethersproject/keccak256@^5.0.0-beta.130", "@ethersproject/keccak256@^5.0.3":
   version "5.0.4"
   resolved "https://registry.yarnpkg.com/@ethersproject/keccak256/-/keccak256-5.0.4.tgz#36ca0a7d1ae2a272da5654cb886776d0c680ef3a"
   integrity sha512-GNpiOUm9PGUxFNqOxYKDQBM0u68bG9XC9iOulEQ8I0tOx/4qUpgVzvgXL6ugxr0RY554Gz/NQsVqknqPzUcxpQ==
@@ -2914,7 +2928,7 @@
   dependencies:
     "@babel/types" "^7.3.0"
 
-"@types/bn.js@^4.11.0", "@types/bn.js@^4.11.3", "@types/bn.js@^4.11.4", "@types/bn.js@^4.11.5":
+"@types/bn.js@^4.11.0", "@types/bn.js@^4.11.3", "@types/bn.js@^4.11.5":
   version "4.11.6"
   resolved "https://registry.yarnpkg.com/@types/bn.js/-/bn.js-4.11.6.tgz#c306c70d9358aaea33cd4eda092a742b9505967c"
   integrity sha512-pqr857jrp2kPuO9uRjZ3PwnJTjoQy+fcdxvBTvHm6dkmEL9q+hDD/2j/0ELOBPtPnS8LjCX0gI9nbl8lVkadpg==
@@ -3042,12 +3056,17 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.0.2.tgz#3452a24edf9fea138b48fad4a0a028a683da1e40"
   integrity sha512-5tabW/i+9mhrfEOUcLDu2xBPsHJ+X5Orqy9FKpale3SjDA17j5AEpYq5vfy3oAeAHGcvANRCO3NV3d2D6q3NiA==
 
+"@types/node@12.12.54":
+  version "12.12.54"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.12.54.tgz#a4b58d8df3a4677b6c08bfbc94b7ad7a7a5f82d1"
+  integrity sha512-ge4xZ3vSBornVYlDnk7yZ0gK6ChHf/CHB7Gl1I0Jhah8DDnEQqBzgohYG4FX4p81TNirSETOiSyn+y1r9/IR6w==
+
 "@types/node@>= 8":
   version "13.11.0"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-13.11.0.tgz#390ea202539c61c8fa6ba4428b57e05bc36dc47b"
   integrity sha512-uM4mnmsIIPK/yeO+42F2RQhGUIs39K2RFmugcJANppXe6J1nvH87PvzPZYpza7Xhhs8Yn9yIAVdLZ84z61+0xQ==
 
-"@types/node@^10.0.3", "@types/node@^10.12.18", "@types/node@^10.3.2":
+"@types/node@^10.0.3", "@types/node@^10.3.2":
   version "10.17.18"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.17.18.tgz#ae364d97382aacdebf583fa4e7132af2dfe56a0c"
   integrity sha512-DQ2hl/Jl3g33KuAUOcMrcAOtsbzb+y/ufakzAdeK9z/H/xsvkpbETZZbPNMIiQuk24f5ZRMCcZIViAwyFIiKmg==
@@ -3058,14 +3077,9 @@
   integrity sha512-KUyZdkGCnVPuXfsKmDUu2XLui65LZIJ2s0M57noy5e+ixUT2oK33ep7zlvgzI8LElcWqbf8AR+o/3GqAPac2zA==
 
 "@types/node@^12.12.6":
-  version "12.12.69"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.12.69.tgz#7cb6a3aa0d16664bf2dcd1450ccb8477464fbd79"
-  integrity sha512-2F2VQRSFmzqgUEXw75L51MgnnZqc6bKWVSUPfrDPzp6mzGGibeVwyQcpvZvBr5RnsoMRHmC8EcBQiobSeqeJxg==
-
-"@types/node@^12.6.1":
-  version "12.12.34"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.12.34.tgz#0a5d6ae5d22612f0cf5f10320e1fc5d2a745dcb8"
-  integrity sha512-BneGN0J9ke24lBRn44hVHNeDlrXRYF+VRp0HbSUNnEZahXGAysHZIqnf/hER6aabdBgzM4YOV4jrR8gj4Zfi0g==
+  version "12.12.67"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.12.67.tgz#4f86badb292e822e3b13730a1f9713ed2377f789"
+  integrity sha512-R48tgL2izApf+9rYNH+3RBMbRpPeW3N8f0I9HMhggeq4UXwBDqumJ14SDs4ctTMhG11pIOduZ4z3QWGOiMc9Vg==
 
 "@types/node@^8.0.0":
   version "8.10.59"
@@ -3361,24 +3375,37 @@
   resolved "https://registry.yarnpkg.com/@use-it/interval/-/interval-0.1.3.tgz#5d1096b2295d7a5dda8e8022f3abb5f9d9ef27f8"
   integrity sha512-chshdtDZTFoWA9aszBz1Cc04Ca9NBD2JTi/GMjdJ+HGm4q7Vy1v71+2mm22r7Kfb2nYW+lTRsPcEHdB/VFVHsQ==
 
-"@web3-js/scrypt-shim@^0.1.0":
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/@web3-js/scrypt-shim/-/scrypt-shim-0.1.0.tgz#0bf7529ab6788311d3e07586f7d89107c3bea2cc"
-  integrity sha512-ZtZeWCc/s0nMcdx/+rZwY1EcuRdemOK9ag21ty9UsHkFxsNb/AaoucUz0iPuyGe0Ku+PFuRmWZG7Z7462p9xPw==
+"@web3-react/abstract-connector@^6.0.7":
+  version "6.0.7"
+  resolved "https://registry.yarnpkg.com/@web3-react/abstract-connector/-/abstract-connector-6.0.7.tgz#401b3c045f1e0fab04256311be49d5144e9badc6"
+  integrity sha512-RhQasA4Ox8CxUC0OENc1AJJm8UTybu/oOCM61Zjg6y0iF7Z0sqv1Ai1VdhC33hrQpA8qSBgoXN9PaP8jKmtdqg==
   dependencies:
-    scryptsy "^2.1.0"
-    semver "^6.3.0"
+    "@web3-react/types" "^6.0.7"
 
-"@web3-js/websocket@^1.0.29":
-  version "1.0.30"
-  resolved "https://registry.yarnpkg.com/@web3-js/websocket/-/websocket-1.0.30.tgz#9ea15b7b582cf3bf3e8bc1f4d3d54c0731a87f87"
-  integrity sha512-fDwrD47MiDrzcJdSeTLF75aCcxVVt8B1N74rA+vh2XCAvFy4tEWJjtnUtj2QG7/zlQ6g9cQ88bZFBxwd9/FmtA==
+"@web3-react/core@^6.1.1":
+  version "6.1.1"
+  resolved "https://registry.yarnpkg.com/@web3-react/core/-/core-6.1.1.tgz#06c853890723f600b387b738a4b71ef41d5cccb7"
+  integrity sha512-HKXOgPNCmFvrVsed+aW/HlVhwzs8t3b+nzg3BoxgJQo/5yLiJXSumHRBdUrPxhBQiHkHRZiVPAvzf/8JMnm74Q==
   dependencies:
-    debug "^2.2.0"
-    es5-ext "^0.10.50"
-    nan "^2.14.0"
-    typedarray-to-buffer "^3.1.5"
-    yaeti "^0.0.6"
+    "@ethersproject/keccak256" "^5.0.0-beta.130"
+    "@web3-react/abstract-connector" "^6.0.7"
+    "@web3-react/types" "^6.0.7"
+    tiny-invariant "^1.0.6"
+    tiny-warning "^1.0.3"
+
+"@web3-react/injected-connector@^6.0.7":
+  version "6.0.7"
+  resolved "https://registry.yarnpkg.com/@web3-react/injected-connector/-/injected-connector-6.0.7.tgz#1e0be23f51fa07fe6547fe986768a46b74c3a426"
+  integrity sha512-Y7aJSz6pg+MWKtvdyuqyy6LWuH+4Tqtph1LWfiyVms9II9ar/9B/de4R8wh4wjg91wmHkU+D75yP09E/Soh2RA==
+  dependencies:
+    "@web3-react/abstract-connector" "^6.0.7"
+    "@web3-react/types" "^6.0.7"
+    tiny-warning "^1.0.3"
+
+"@web3-react/types@^6.0.7":
+  version "6.0.7"
+  resolved "https://registry.yarnpkg.com/@web3-react/types/-/types-6.0.7.tgz#34a6204224467eedc6123abaf55fbb6baeb2809f"
+  integrity sha512-ofGmfDhxmNT1/P/MgVa8IKSkCStFiyvXe+U5tyZurKdrtTDFU+wJ/LxClPDtFerWpczNFPUSrKcuhfPX1sI6+A==
 
 "@webassemblyjs/ast@1.8.5":
   version "1.8.5"
@@ -4979,16 +5006,11 @@ bignumber.js@^9.0.0:
   resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-9.0.0.tgz#805880f84a329b5eac6e7cb6f8274b6d82bdf075"
   integrity sha512-t/OYhhJ2SD+YGBQcjY8GzzDHEk9f3nerxjtfa6tlMXfe7frs/WozhvCNoGvpM0P3bNf3Gq5ZRMlGr5f3r4/N8A==
 
-bignumber.js@^9.0.1:
+bignumber.js@^9.0.1, bignumber.js@~9.0.0:
   version "9.0.1"
   resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-9.0.1.tgz#8d7ba124c882bfd8e43260c67475518d0689e4e5"
   integrity sha512-IdZR9mh6ahOBv/hYGiXyVuyCetmGJhtYkqLBpTStdhEGjegpPlUawydyaF3pbIOFynJTpllEs+NP+CS9jKFLjA==
 
-bignumber.js@~8.0.2:
-  version "8.0.2"
-  resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-8.0.2.tgz#d8c4e1874359573b1ef03011a2d861214aeef137"
-  integrity sha512-EiuvFrnbv0jFixEQ9f58jo7X0qI2lNGIr/MxntmVzQc5JUweDSh8y8hbTCAomFtqwUPIOWcLXP0VEOSZTG7FFw==
-
 binary-extensions@^1.0.0:
   version "1.13.1"
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-1.13.1.tgz#598afe54755b2868a5330d2aff9d4ebb53209b65"
@@ -5705,13 +5727,18 @@ ccount@^1.0.3:
   resolved "https://registry.yarnpkg.com/ccount/-/ccount-1.0.4.tgz#9cf2de494ca84060a2a8d2854edd6dfb0445f386"
   integrity sha512-fpZ81yYfzentuieinmGnphk0pLkOTMm6MZdVqwd77ROvhko6iujLNGrHH5E7utq3ygWklwfmwuG+A7P+NpqT6w==
 
-chai-as-promised@^7.1.1:
+chai-as-promised@^7.1.0, chai-as-promised@^7.1.1:
   version "7.1.1"
   resolved "https://registry.yarnpkg.com/chai-as-promised/-/chai-as-promised-7.1.1.tgz#08645d825deb8696ee61725dbf590c012eb00ca0"
   integrity sha512-azL6xMoi+uxu6z4rhWQ1jbdUhOMhis2PvscD/xjLqNMkv3BPPp2JyyuTHOrf9BOosGpNQ11v6BKv/g57RXbiaA==
   dependencies:
     check-error "^1.0.2"
 
+chai-bignumber@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/chai-bignumber/-/chai-bignumber-3.0.0.tgz#e90cf1f468355bbb11a9acd051222586cd2648a9"
+  integrity sha512-SubOtaSI2AILWTWe2j0c6i2yFT/f9J6UBjeVGDuwDiPLkF/U5+/eTWUE3sbCZ1KgcPF6UJsDVYbIxaYA097MQA==
+
 chai-bn@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/chai-bn/-/chai-bn-0.1.1.tgz#a8904b2dc878e5c094881f327c0029579ff2062b"
@@ -6525,17 +6552,6 @@ cosmiconfig@^5.0.0, cosmiconfig@^5.0.7, cosmiconfig@^5.1.0, cosmiconfig@^5.2.0:
     js-yaml "^3.13.1"
     parse-json "^4.0.0"
 
-coveralls@^3.0.6:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/coveralls/-/coveralls-3.1.0.tgz#13c754d5e7a2dd8b44fe5269e21ca394fb4d615b"
-  integrity sha512-sHxOu2ELzW8/NC1UP5XVLbZDzO4S3VxfFye3XYCznopHy02YjNkHcj5bKaVw2O7hVaBdBjEdQGpie4II1mWhuQ==
-  dependencies:
-    js-yaml "^3.13.1"
-    lcov-parse "^1.0.0"
-    log-driver "^1.2.7"
-    minimist "^1.2.5"
-    request "^2.88.2"
-
 create-ecdh@^4.0.0:
   version "4.0.3"
   resolved "https://registry.yarnpkg.com/create-ecdh/-/create-ecdh-4.0.3.tgz#c9111b6f33045c4697f144787f9254cdc77c45ff"
@@ -7381,6 +7397,11 @@ dir-to-object@^2.0.0:
   resolved "https://registry.yarnpkg.com/dir-to-object/-/dir-to-object-2.0.0.tgz#29723e9bd1c3e58e4f307bd04ff634c0370c8f8a"
   integrity sha512-sXs0JKIhymON7T1UZuO2Ud6VTNAx/VTBXIl4+3mjb2RgfOpt+hectX0x04YqPOPdkeOAKoJuKqwqnXXURNPNEA==
 
+dirty-chai@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/dirty-chai/-/dirty-chai-2.0.1.tgz#6b2162ef17f7943589da840abc96e75bda01aff3"
+  integrity sha512-ys79pWKvDMowIDEPC6Fig8d5THiC0DJ2gmTeGzVAoEH18J8OzLud0Jh7I9IWg3NSk8x2UocznUuFmfHCXYZx9w==
+
 dns-equal@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/dns-equal/-/dns-equal-1.0.0.tgz#b39e7f1da6eb0a75ba9c17324b34753c47e0654d"
@@ -8444,7 +8465,7 @@ eth-lib@0.2.7:
     elliptic "^6.4.0"
     xhr-request-promise "^0.1.2"
 
-eth-lib@0.2.8, eth-lib@^0.2.8:
+eth-lib@0.2.8:
   version "0.2.8"
   resolved "https://registry.yarnpkg.com/eth-lib/-/eth-lib-0.2.8.tgz#b194058bef4b220ad12ea497431d6cb6aa0623c8"
   integrity sha512-ArJ7x1WcWOlSpzdoTBX8vkwlkSQ85CjjifSZtV4co64vWxSV8geWfPI9x4SVYu3DSxnX4yWFVTtGL+j9DUFLNw==
@@ -8545,13 +8566,13 @@ ethereum-cryptography@^0.1.3:
     secp256k1 "^4.0.1"
     setimmediate "^1.0.5"
 
-ethereum-types@^2.1.6:
-  version "2.1.6"
-  resolved "https://registry.yarnpkg.com/ethereum-types/-/ethereum-types-2.1.6.tgz#57d9d515fad86ab987c0f6962c4203be37da8579"
-  integrity sha512-xaN5TxLvkdFCGjGfUQ5wV00GHzDHStozP1j+K/YdmUeQXVGiD15cogYPhBVWG3pQJM/aBjtYrpMrjywvKkNC4A==
+ethereum-types@^3.3.3:
+  version "3.3.3"
+  resolved "https://registry.yarnpkg.com/ethereum-types/-/ethereum-types-3.3.3.tgz#b9328185034ee52efa32176eb6fd9f3e741cb231"
+  integrity sha512-FWW7ajHqgoqVHhPMX4sY2ycARpPFL8p/64rpToo8awNrJY7rBDnSC8esQYlAPeaiawf9fTM/xAgEm9VKY7J5kg==
   dependencies:
-    "@types/node" "*"
-    bignumber.js "~8.0.2"
+    "@types/node" "12.12.54"
+    bignumber.js "~9.0.0"
 
 ethereumjs-abi@0.6.5:
   version "0.6.5"
@@ -8826,16 +8847,16 @@ eventemitter3@1.1.1:
   resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-1.1.1.tgz#47786bdaa087caf7b1b75e73abc5c7d540158cd0"
   integrity sha1-R3hr2qCHyvext15zq8XH1UAVjNA=
 
-eventemitter3@3.1.2, eventemitter3@^3.0.0, eventemitter3@^3.1.0:
-  version "3.1.2"
-  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-3.1.2.tgz#2d3d48f9c346698fce83a85d7d664e98535df6e7"
-  integrity sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q==
-
-eventemitter3@4.0.4, eventemitter3@^4.0.0:
+eventemitter3@4.0.4:
   version "4.0.4"
   resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-4.0.4.tgz#b5463ace635a083d018bdc7c917b4c5f10a85384"
   integrity sha512-rlaVLnVxtxvoyLsQQFBx53YmXHDxRIzzTLbdfxqi4yocpSjAxXwkU0cScM5JgSKMqEhrZpnvQ2D9gjylR0AimQ==
 
+eventemitter3@^3.0.0, eventemitter3@^3.1.0:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-3.1.2.tgz#2d3d48f9c346698fce83a85d7d664e98535df6e7"
+  integrity sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q==
+
 events@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/events/-/events-3.0.0.tgz#9a0a0dfaf62893d92b875b8f2698ca4114973e88"
@@ -9673,7 +9694,7 @@ ganache-cli@^6.6.0:
     source-map-support "0.5.12"
     yargs "13.2.4"
 
-ganache-core@^2.6.0:
+ganache-core@^2.10.2:
   version "2.13.1"
   resolved "https://registry.yarnpkg.com/ganache-core/-/ganache-core-2.13.1.tgz#bf60399a2dd084e1090db91cbbc7ed3885dc01e4"
   integrity sha512-Ewg+kNcDqXtOohe7jCcP+ZUv9EMzOx2MoqOYYP3BCfxrDh3KjBXXaKK+Let7li0TghAs9lxmBgevZku35j5YzA==
@@ -12523,11 +12544,6 @@ lcid@^2.0.0:
   dependencies:
     invert-kv "^2.0.0"
 
-lcov-parse@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/lcov-parse/-/lcov-parse-1.0.0.tgz#eb0d46b54111ebc561acb4c408ef9363bdc8f7e0"
-  integrity sha1-6w1GtUER68VhrLTECO+TY73I9+A=
-
 left-pad@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/left-pad/-/left-pad-1.3.0.tgz#5b8a3a7765dfe001261dde915589e782f8c94d1e"
@@ -12969,11 +12985,6 @@ lodash@4.17.20:
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
   integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
 
-log-driver@^1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/log-driver/-/log-driver-1.2.7.tgz#63b95021f0702fedfa2c9bb0a24e7797d71871d8"
-  integrity sha512-U7KCmLdqsGHBLeWqYlFA0V0Sl6P08EE1ZrmA9cxjUE0WVqT9qnyVDPz1kzpFEP0jdJuFnasWIfSd7fsaNXkpbg==
-
 loglevel@^1.4.1:
   version "1.6.1"
   resolved "https://registry.yarnpkg.com/loglevel/-/loglevel-1.6.1.tgz#e0fc95133b6ef276cdc8887cdaf24aa6f156f8fa"
@@ -13942,6 +13953,11 @@ node-fetch@^2.1.2, node-fetch@^2.3.0, node-fetch@^2.5.0:
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.0.tgz#e633456386d4aa55863f676a7ab0daa8fdecb0fd"
   integrity sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA==
 
+node-fetch@^2.6.1:
+  version "2.6.1"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.1.tgz#045bd323631f76ed2e2b55573394416b639a0052"
+  integrity sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==
+
 node-forge@0.7.5:
   version "0.7.5"
   resolved "https://registry.yarnpkg.com/node-forge/-/node-forge-0.7.5.tgz#6c152c345ce11c52f465c2abd957e8639cd674df"
@@ -17179,7 +17195,7 @@ request-promise@^4.2.2:
     stealthy-require "^1.1.1"
     tough-cookie "^2.3.3"
 
-request@^2.67.0, request@^2.85.0, request@^2.87.0, request@^2.88.0, request@^2.88.2:
+request@^2.67.0, request@^2.85.0, request@^2.87.0, request@^2.88.0:
   version "2.88.2"
   resolved "https://registry.yarnpkg.com/request/-/request-2.88.2.tgz#d73c918731cb5a87da047e207234146f664d12b3"
   integrity sha512-MsvtOrfG9ZcrOwAW+Qi+F6HbD0CWXEh9ou77uOb7FM2WPhwT7smM833PzanhJLsgXjN89Ir6V2PczXNnMpwKhw==
@@ -17634,11 +17650,6 @@ scryptsy@^1.2.1:
   dependencies:
     pbkdf2 "^3.0.3"
 
-scryptsy@^2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/scryptsy/-/scryptsy-2.1.0.tgz#8d1e8d0c025b58fdd25b6fa9a0dc905ee8faa790"
-  integrity sha512-1CdSqHQowJBnMAFyPEBRfqag/YP9OF394FV+4YREIJX4ljD7OxvQRDayyoyyCk+senRjSkP6VnUNQmVQqB6g7w==
-
 scss-tokenizer@^0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/scss-tokenizer/-/scss-tokenizer-0.2.3.tgz#8eb06db9a9723333824d3f5530641149847ce5d1"
@@ -19175,6 +19186,11 @@ tiny-invariant@^1.0.2:
   resolved "https://registry.yarnpkg.com/tiny-invariant/-/tiny-invariant-1.0.4.tgz#346b5415fd93cb696b0c4e8a96697ff590f92463"
   integrity sha512-lMhRd/djQJ3MoaHEBrw8e2/uM4rs9YMNk0iOr8rHQ0QdbM7D4l0gFl3szKdeixrlyfm9Zqi4dxHCM2qVG8ND5g==
 
+tiny-invariant@^1.0.6:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/tiny-invariant/-/tiny-invariant-1.1.0.tgz#634c5f8efdc27714b7f386c35e6760991d230875"
+  integrity sha512-ytxQvrb1cPc9WBEI/HSeYYoGD0kWnGEOR8RY6KomWLBVhqz0RgTwVO9dLrGz7dC+nN9llyI7OKAgRq8Vq4ZBSw==
+
 tiny-warning@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/tiny-warning/-/tiny-warning-1.0.2.tgz#1dfae771ee1a04396bdfde27a3adcebc6b648b28"
@@ -20127,16 +20143,6 @@ web3-bzz@1.2.11:
     swarm-js "^0.1.40"
     underscore "1.9.1"
 
-web3-bzz@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-bzz/-/web3-bzz-1.2.7.tgz#aa0f3d162f0777a5f35367dc5b70012dd1e129d0"
-  integrity sha512-iTIWBR+Z+Bn09WprtKm46LmyNOasg2lUn++AjXkBTB8UNxlUybxtza84yl2ETTZUs0zuFzdSSAEgbjhygG+9oA==
-  dependencies:
-    "@types/node" "^10.12.18"
-    got "9.6.0"
-    swarm-js "^0.1.40"
-    underscore "1.9.1"
-
 web3-bzz@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-bzz/-/web3-bzz-1.3.0.tgz#83dfd77fa8a64bbb660462dffd0fee2a02ef1051"
@@ -20174,15 +20180,6 @@ web3-core-helpers@1.2.11:
     web3-eth-iban "1.2.11"
     web3-utils "1.2.11"
 
-web3-core-helpers@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-core-helpers/-/web3-core-helpers-1.2.7.tgz#522f859775ea0d15e7e40359c46d4efc5da92aee"
-  integrity sha512-bdU++9QATGeCetVrMp8pV97aQtVkN5oLBf/TWu/qumC6jK/YqrvLlBJLdwbz0QveU8zOSap6GCvJbqKvmmbV2A==
-  dependencies:
-    underscore "1.9.1"
-    web3-eth-iban "1.2.7"
-    web3-utils "1.2.7"
-
 web3-core-helpers@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-core-helpers/-/web3-core-helpers-1.3.0.tgz#697cc3246a7eaaaac64ea506828d861c981c3f31"
@@ -20226,17 +20223,6 @@ web3-core-method@1.2.11:
     web3-core-subscriptions "1.2.11"
     web3-utils "1.2.11"
 
-web3-core-method@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-core-method/-/web3-core-method-1.2.7.tgz#73fd80d2bf0765ff6efc454db49ac83d1769a45e"
-  integrity sha512-e1TI0QUnByDMbQ8QHwnjxfjKw0LIgVRY4TYrlPijET9ebqUJU1HCayn/BHIMpV6LKyR1fQj9EldWyT64wZQXkg==
-  dependencies:
-    underscore "1.9.1"
-    web3-core-helpers "1.2.7"
-    web3-core-promievent "1.2.7"
-    web3-core-subscriptions "1.2.7"
-    web3-utils "1.2.7"
-
 web3-core-method@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-core-method/-/web3-core-method-1.3.0.tgz#a71387af842aec7dbad5dbbd1130c14cc6c8beb3"
@@ -20272,13 +20258,6 @@ web3-core-promievent@1.2.11:
   dependencies:
     eventemitter3 "4.0.4"
 
-web3-core-promievent@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-core-promievent/-/web3-core-promievent-1.2.7.tgz#fc7fa489f4cf76a040800f3dfd4b45c51bd3a39f"
-  integrity sha512-jNmsM/czCeMGQqKKwM9/HZVTJVIF96hdMVNN/V9TGvp+EEE7vDhB4pUocDnc/QF9Z/5QFBCVmvNWttlRgZmU0A==
-  dependencies:
-    eventemitter3 "3.1.2"
-
 web3-core-promievent@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-core-promievent/-/web3-core-promievent-1.3.0.tgz#e0442dd0a8989b6bdce09293976cee6d9237a484"
@@ -20319,17 +20298,6 @@ web3-core-requestmanager@1.2.11:
     web3-providers-ipc "1.2.11"
     web3-providers-ws "1.2.11"
 
-web3-core-requestmanager@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-core-requestmanager/-/web3-core-requestmanager-1.2.7.tgz#9da0efce898ead7004d4ac50f748f5131cfe4d79"
-  integrity sha512-HJb/txjHixu1dxIebiZQKBoJCaNu4gsh7mq/uj6Z/w6tIHbybL90s/7ADyMED353yyJ2tDWtYJqeMVAR+KtdaA==
-  dependencies:
-    underscore "1.9.1"
-    web3-core-helpers "1.2.7"
-    web3-providers-http "1.2.7"
-    web3-providers-ipc "1.2.7"
-    web3-providers-ws "1.2.7"
-
 web3-core-requestmanager@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-core-requestmanager/-/web3-core-requestmanager-1.3.0.tgz#c5b9a0304504c0e6cce6c90bc1a3bff82732aa1f"
@@ -20368,15 +20336,6 @@ web3-core-subscriptions@1.2.11:
     underscore "1.9.1"
     web3-core-helpers "1.2.11"
 
-web3-core-subscriptions@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-core-subscriptions/-/web3-core-subscriptions-1.2.7.tgz#30c64aede03182832883b17c77e21cbb0933c86e"
-  integrity sha512-W/CzQYOUawdMDvkgA/fmLsnG5aMpbjrs78LZMbc0MFXLpH3ofqAgO2by4QZrrTShUUTeWS0ZuEkFFL/iFrSObw==
-  dependencies:
-    eventemitter3 "3.1.2"
-    underscore "1.9.1"
-    web3-core-helpers "1.2.7"
-
 web3-core-subscriptions@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-core-subscriptions/-/web3-core-subscriptions-1.3.0.tgz#c2622ccd2b84f4687475398ff966b579dba0847e"
@@ -20419,19 +20378,6 @@ web3-core@1.2.11:
     web3-core-requestmanager "1.2.11"
     web3-utils "1.2.11"
 
-web3-core@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-core/-/web3-core-1.2.7.tgz#9248b04331e458c76263d758c51b0cc612953900"
-  integrity sha512-QA0MTae0gXcr3KHe3cQ4x56+Wh43ZKWfMwg1gfCc3NNxPRM1jJ8qudzyptCAUcxUGXWpDG8syLIn1APDz5J8BQ==
-  dependencies:
-    "@types/bn.js" "^4.11.4"
-    "@types/node" "^12.6.1"
-    bignumber.js "^9.0.0"
-    web3-core-helpers "1.2.7"
-    web3-core-method "1.2.7"
-    web3-core-requestmanager "1.2.7"
-    web3-utils "1.2.7"
-
 web3-core@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-core/-/web3-core-1.3.0.tgz#b818903738461c1cca0163339e1d6d3fa51242cf"
@@ -20474,15 +20420,6 @@ web3-eth-abi@1.2.11:
     underscore "1.9.1"
     web3-utils "1.2.11"
 
-web3-eth-abi@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-eth-abi/-/web3-eth-abi-1.2.7.tgz#6f3471b578649fddd844a14d397a3dd430fc44a5"
-  integrity sha512-4FnlT1q+D0XBkxSMXlIb/eG337uQeMaUdtVQ4PZ3XzxqpcoDuMgXm4o+3NRxnWmr4AMm6QKjM+hcC7c0mBKcyg==
-  dependencies:
-    ethers "4.0.0-beta.3"
-    underscore "1.9.1"
-    web3-utils "1.2.7"
-
 web3-eth-abi@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-eth-abi/-/web3-eth-abi-1.3.0.tgz#387b7ea9b38be69ad8856bc7b4e9a6a69bb4d22b"
@@ -20550,23 +20487,6 @@ web3-eth-accounts@1.2.11:
     web3-core-method "1.2.11"
     web3-utils "1.2.11"
 
-web3-eth-accounts@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-eth-accounts/-/web3-eth-accounts-1.2.7.tgz#087f55d04a01b815b93151aac2fc1677436b9c59"
-  integrity sha512-AE7QWi/iIQIjXwlAPtlMabm/OPFF0a1PhxT1EiTckpYNP8fYs6jW7lYxEtJPPJIKqfMjoi1xkEqTVR1YZQ88lg==
-  dependencies:
-    "@web3-js/scrypt-shim" "^0.1.0"
-    crypto-browserify "3.12.0"
-    eth-lib "^0.2.8"
-    ethereumjs-common "^1.3.2"
-    ethereumjs-tx "^2.1.1"
-    underscore "1.9.1"
-    uuid "3.3.2"
-    web3-core "1.2.7"
-    web3-core-helpers "1.2.7"
-    web3-core-method "1.2.7"
-    web3-utils "1.2.7"
-
 web3-eth-accounts@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-eth-accounts/-/web3-eth-accounts-1.3.0.tgz#010acf389b2bee6d5e1aecb2fe78bfa5c8f26c7a"
@@ -20627,21 +20547,6 @@ web3-eth-contract@1.2.11:
     web3-eth-abi "1.2.11"
     web3-utils "1.2.11"
 
-web3-eth-contract@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-eth-contract/-/web3-eth-contract-1.2.7.tgz#13d7f6003d6221f9a5fd61c2d3b5d039477c9674"
-  integrity sha512-uW23Y0iL7XroRNbf9fWZ1N6OYhEYTJX8gTuYASuRnpYrISN5QGiQML6pq/NCzqypR1bl5E0fuINZQSK/xefIVw==
-  dependencies:
-    "@types/bn.js" "^4.11.4"
-    underscore "1.9.1"
-    web3-core "1.2.7"
-    web3-core-helpers "1.2.7"
-    web3-core-method "1.2.7"
-    web3-core-promievent "1.2.7"
-    web3-core-subscriptions "1.2.7"
-    web3-eth-abi "1.2.7"
-    web3-utils "1.2.7"
-
 web3-eth-contract@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-eth-contract/-/web3-eth-contract-1.3.0.tgz#c758340ac800788e29fa29edc8b0c0ac957b741c"
@@ -20672,20 +20577,6 @@ web3-eth-ens@1.2.11:
     web3-eth-contract "1.2.11"
     web3-utils "1.2.11"
 
-web3-eth-ens@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.2.7.tgz#0bfa7d4b6c7753abbb31a2eb01a364b538f4c860"
-  integrity sha512-SPRnvUNWQ0CnnTDBteGIJkvFWEizJcAHlVsrFLICwcwFZu+appjX1UOaoGu2h3GXWtc/XZlu7B451Gi+Os2cTg==
-  dependencies:
-    eth-ens-namehash "2.0.8"
-    underscore "1.9.1"
-    web3-core "1.2.7"
-    web3-core-helpers "1.2.7"
-    web3-core-promievent "1.2.7"
-    web3-eth-abi "1.2.7"
-    web3-eth-contract "1.2.7"
-    web3-utils "1.2.7"
-
 web3-eth-ens@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.3.0.tgz#0887ba38473c104cf5fb8a715828b3b354fa02a2"
@@ -20725,14 +20616,6 @@ web3-eth-iban@1.2.11:
     bn.js "^4.11.9"
     web3-utils "1.2.11"
 
-web3-eth-iban@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.2.7.tgz#832809c28586be3c667a713b77a2bcba11b7970f"
-  integrity sha512-2NrClz1PoQ3nSJBd+91ylCOVga9qbTxjRofq/oSCoHVAEvz3WZyttx9k5DC+0rWqwJF1h69ufFvdHAAlmN/4lg==
-  dependencies:
-    bn.js "4.11.8"
-    web3-utils "1.2.7"
-
 web3-eth-iban@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.3.0.tgz#15b782dfaf273ebc4e3f389f1367f4e88ddce4a5"
@@ -20775,18 +20658,6 @@ web3-eth-personal@1.2.11:
     web3-net "1.2.11"
     web3-utils "1.2.11"
 
-web3-eth-personal@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.2.7.tgz#322cc2b14c37737b21772a53e4185686a04bf9be"
-  integrity sha512-2OAa1Spz0uB29dwCM8+1y0So7E47A4gKznjBEwXIYEcUIsvwT5X7ofFhC2XxyRpqlIWZSQAxRSSJFyupRRXzyw==
-  dependencies:
-    "@types/node" "^12.6.1"
-    web3-core "1.2.7"
-    web3-core-helpers "1.2.7"
-    web3-core-method "1.2.7"
-    web3-net "1.2.7"
-    web3-utils "1.2.7"
-
 web3-eth-personal@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.3.0.tgz#d376e03dc737d961ff1f8d1aca866efad8477135"
@@ -20854,25 +20725,6 @@ web3-eth@1.2.11:
     web3-net "1.2.11"
     web3-utils "1.2.11"
 
-web3-eth@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.2.7.tgz#9427daefd3641200679c2946f77fc184dbfb5b4c"
-  integrity sha512-ljLd0oB4IjWkzFGVan4HkYhJXhSXgn9iaSaxdJixKGntZPgWMJfxeA+uLwTrlxrWzhvy4f+39WnT7wCh5e9TGg==
-  dependencies:
-    underscore "1.9.1"
-    web3-core "1.2.7"
-    web3-core-helpers "1.2.7"
-    web3-core-method "1.2.7"
-    web3-core-subscriptions "1.2.7"
-    web3-eth-abi "1.2.7"
-    web3-eth-accounts "1.2.7"
-    web3-eth-contract "1.2.7"
-    web3-eth-ens "1.2.7"
-    web3-eth-iban "1.2.7"
-    web3-eth-personal "1.2.7"
-    web3-net "1.2.7"
-    web3-utils "1.2.7"
-
 web3-eth@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.3.0.tgz#898e5f5a8827f9bc6844e267a52eb388916a6771"
@@ -20919,15 +20771,6 @@ web3-net@1.2.11:
     web3-core-method "1.2.11"
     web3-utils "1.2.11"
 
-web3-net@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.2.7.tgz#c355621a8769c9c1a967c801e7db90c92a0e3808"
-  integrity sha512-j9qeZrS1FNyCeA0BfdLojkxOZQz3FKa1DJI+Dw9fEVhZS68vLOFANu2RB96gR9BoPHo5+k5D3NsKOoxt1gw3Gg==
-  dependencies:
-    web3-core "1.2.7"
-    web3-core-method "1.2.7"
-    web3-utils "1.2.7"
-
 web3-net@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.3.0.tgz#b69068cccffab58911c2f08ca4abfbefb0f948c6"
@@ -21014,14 +20857,6 @@ web3-providers-http@1.2.11:
     web3-core-helpers "1.2.11"
     xhr2-cookies "1.1.0"
 
-web3-providers-http@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-providers-http/-/web3-providers-http-1.2.7.tgz#31eb15390c103169b3d7d31bdb1ccae9e3f1629d"
-  integrity sha512-vazGx5onuH/zogrwkUaLFJwFcJ6CckP65VFSHoiV+GTQdkOqgoDIha7StKkslvDz4XJ2FuY/zOZHbtuOYeltXQ==
-  dependencies:
-    web3-core-helpers "1.2.7"
-    xhr2-cookies "1.1.0"
-
 web3-providers-http@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-providers-http/-/web3-providers-http-1.3.0.tgz#88227f64c88b32abed4359383c2663616e0dc531"
@@ -21057,15 +20892,6 @@ web3-providers-ipc@1.2.11:
     underscore "1.9.1"
     web3-core-helpers "1.2.11"
 
-web3-providers-ipc@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-providers-ipc/-/web3-providers-ipc-1.2.7.tgz#4e6716e8723d431df3d6bfa1acd2f7c04e7071ad"
-  integrity sha512-/zc0y724H2zbkV4UbGGMhsEiLfafjagIzfrsWZnyTZUlSB0OGRmmFm2EkLJAgtXrLiodaHHyXKM0vB8S24bxdA==
-  dependencies:
-    oboe "2.1.4"
-    underscore "1.9.1"
-    web3-core-helpers "1.2.7"
-
 web3-providers-ipc@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-providers-ipc/-/web3-providers-ipc-1.3.0.tgz#d7c2b203733b46f7b4e7b15633d891648cf9a293"
@@ -21103,16 +20929,6 @@ web3-providers-ws@1.2.11:
     web3-core-helpers "1.2.11"
     websocket "^1.0.31"
 
-web3-providers-ws@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-providers-ws/-/web3-providers-ws-1.2.7.tgz#95b1cc5dc25e9b9d6630d6754f9354313b62f532"
-  integrity sha512-b5XzqDpRkNVe6MFs5K6iqOEyjQikHtg3KuU2/ClCDV37hm0WN4xCRVMC0LwegulbDXZej3zT9+1CYzGaGFREzA==
-  dependencies:
-    "@web3-js/websocket" "^1.0.29"
-    eventemitter3 "^4.0.0"
-    underscore "1.9.1"
-    web3-core-helpers "1.2.7"
-
 web3-providers-ws@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-providers-ws/-/web3-providers-ws-1.3.0.tgz#84adeff65acd4624d7f5bb43c5b2b22d8f0f63a4"
@@ -21153,16 +20969,6 @@ web3-shh@1.2.11:
     web3-core-subscriptions "1.2.11"
     web3-net "1.2.11"
 
-web3-shh@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-shh/-/web3-shh-1.2.7.tgz#5382c7bc2f39539eb2841c4576d23ade25720461"
-  integrity sha512-f6PAgcpG0ZAo98KqCmeHoDEx5qzm3d5plet18DkT4U6WIeYowKdec8vZaLPRR7c2XreXFJ2gQf45CB7oqR7U/w==
-  dependencies:
-    web3-core "1.2.7"
-    web3-core-method "1.2.7"
-    web3-core-subscriptions "1.2.7"
-    web3-net "1.2.7"
-
 web3-shh@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-shh/-/web3-shh-1.3.0.tgz#62d15297da8fb5f733dd1b98f9ade300590f4d49"
@@ -21227,20 +21033,6 @@ web3-utils@1.2.6:
     underscore "1.9.1"
     utf8 "3.0.0"
 
-web3-utils@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.2.7.tgz#b68e232917e4376f81cf38ef79878e5903d18e93"
-  integrity sha512-FBh/CPJND+eiPeUF9KVbTyTZtXNWxPWtByBaWS6e2x4ACazPX711EeNaZaChIOGSLGe6se2n7kg6wnawe/MjuQ==
-  dependencies:
-    bn.js "4.11.8"
-    eth-lib "0.2.7"
-    ethereum-bloom-filters "^1.0.6"
-    ethjs-unit "0.1.6"
-    number-to-bn "1.7.0"
-    randombytes "^2.1.0"
-    underscore "1.9.1"
-    utf8 "3.0.0"
-
 web3-utils@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.3.0.tgz#5bac16e5e0ec9fe7bdcfadb621655e8aa3cf14e1"
@@ -21294,19 +21086,6 @@ web3@1.2.11:
     web3-shh "1.2.11"
     web3-utils "1.2.11"
 
-web3@1.2.7:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/web3/-/web3-1.2.7.tgz#fcb83571036c1c6f475bc984785982a444e8d78e"
-  integrity sha512-jAAJHMfUlTps+jH2li1ckDFEpPrEEriU/ubegSTGRl3KRdNhEqT93+3kd7FHJTn3NgjcyURo2+f7Da1YcZL8Mw==
-  dependencies:
-    web3-bzz "1.2.7"
-    web3-core "1.2.7"
-    web3-eth "1.2.7"
-    web3-eth-personal "1.2.7"
-    web3-net "1.2.7"
-    web3-shh "1.2.7"
-    web3-utils "1.2.7"
-
 web3@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/web3/-/web3-1.3.0.tgz#8fe4cd6e2a21c91904f343ba75717ee4c76bb349"