bump version

fix tests
fix publish action
2020-08-12 12:57:08 +03:00 · 2020-08-12 12:53:43 +03:00 · 2020-08-12 12:37:51 +03:00 · 2020-08-11 17:37:55 -07:00 · 2020-08-11 17:36:37 -07:00 · 2020-07-20 21:50:35 +00:00
9 changed files with 278 additions and 202 deletions
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -0,0 +1,65 @@
+name: Node.js CI
+
+on:
+  push:
+    branches: [ '*' ]
+    tags: [ 'v[0-9]+.[0-9]+.[0-9]+' ]
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - run: npm ci
+      - run: npm test
+      - name: TSLint checks
+        uses: mooyoul/tslint-actions@v1.1.1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          project: tsconfig.json
+
+  publish:
+    runs-on: ubuntu-latest
+    needs: [build]
+    if: startsWith(github.ref, 'refs/tags')
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - run: npm install
+      - run: npm run build
+      - name: NPM login
+        # NPM doesn't understand env vars and needs auth file lol
+        run: echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" > ~/.npmrc
+        env:
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+      - name: Set vars
+        id: vars
+        run: |
+          echo "::set-output name=version::$(echo ${GITHUB_REF#refs/tags/v})"
+          echo "::set-output name=repo_name::$(echo ${GITHUB_REPOSITORY#*/})"
+      - name: Check package.json version vs tag
+        run: |
+          [ ${{ steps.vars.outputs.version }} = $(grep '"version":' package.json | grep -o "[0-9.]*") ] || (echo "Git tag doesn't match version in package.json" && false)
+      - name: Publish to npm
+        run: npm publish
+      - name: Create GitHub Release Draft
+        uses: actions/create-release@v1
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ steps.vars.outputs.version }}
+          draft: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Telegram Message Notify
+        uses: appleboy/telegram-action@0.0.7
+        with:
+          to: ${{ secrets.TELEGRAM_CHAT_ID }}
+          token: ${{ secrets.TELEGRAM_BOT_TOKEN }}
+          message: 🚀 Published [${{ steps.vars.outputs.repo_name }}](https://github.com/${{ github.repository }}) version [${{ steps.vars.outputs.version }}](https://www.npmjs.com/package/${{ steps.vars.outputs.repo_name }}/v/${{ steps.vars.outputs.version }}) to npm
+          debug: true
+          format: markdown
--- a/21
+++ b/21
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 PepperSec
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/README.md
+++ b/README.md
@@ -1,6 +1,16 @@
-# Gas Price Oracle library for Ethereum dApps
+# Gas Price Oracle library for Ethereum dApps [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/peppersec/gas-price-oracle/Node.js%20CI)](https://github.com/peppersec/gas-price-oracle/actions) [![npm](https://img.shields.io/npm/v/gas-price-oracle)](https://www.npmjs.com/package/gas-price-oracle) 
+A library that has a collection of onchain and offchain gas price oracle URLs

-## Instalation
+Current offchain list:  
+- https://ethgasstation.info/json/ethgasAPI.json  
+- https://gas-oracle.zoltu.io/  
+- https://www.etherchain.org/api/gasPriceOracle  
+- https://gasprice.poa.network/  
+
+Current onchain list:  
+- [chainlink](https://etherscan.io/address/0xA417221ef64b1549575C977764E651c9FAB50141)  
+
+## Installation
 `npm i gas-price-oracle`

 ## Import
@@ -9,11 +19,19 @@ const { GasPriceOracle } = require('gas-price-oracle');
 ```
 ## Usage
 ### Basic
-```js
-const oracle = new GasPriceOracle();

-oracle.gasPrices().then((gas) => {
-    console.log(gas)
+```js
+
+const options = {
+    defaultRpc: 'https://api.mycryptoapi.com/eth'
+}
+const oracle = new GasPriceOracle(options);
+// optional fallbackGasPrices
+const fallbackGasPrices = {
+    instant: 70, fast: 31, standard: 20, low: 7
+}
+oracle.gasPrices(fallbackGasPrices).then((gasPrices) => {
+    console.log(gasPrices) // { instant: 50, fast: 21, standard: 10, low: 3 }
 });
 ```

@@ -21,28 +39,17 @@ oracle.gasPrices().then((gas) => {
 ```js
 const oracle = new GasPriceOracle();

-oracle.fetchGasPricesOffChain().then((gas) => {
-    console.log(gas)
+oracle.fetchGasPricesOffChain().then((gasPrices) => {
+    console.log(gasPrices) // { instant: 50, fast: 21, standard: 10, low: 3 }
 });
 ```

 ### Custom RPC URL for onchain oracles
 ```js
-const customRpc = 'https://mainnet.infura.io/v3/<API_KEY>'
-const oracle = new GasPriceOracle(customRpc);
+const defaultRpc = 'https://mainnet.infura.io/v3/<API_KEY>'
+const oracle = new GasPriceOracle({ defaultRpc });

-oracle.fetchGasPricesOnChain().then((gas) => {
-    console.log(gas)
-});
-```
-
-### Don't throw an error if oracles are down
-```js
-oracle.fetchGasPricesOnChain(false).then((gas) => {
-    console.log(gas)
-});
-
-oracle.fetchGasPricesOffChain(false).then((gas) => {
-    console.log(gas)
+oracle.fetchGasPricesOnChain().then((gasPrices) => {
+    console.log(gasPrices) // 21
 });
 ```
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
  "name": "gas-price-oracle",
-  "version": "1.0.0",
+  "version": "0.1.4",
  "lockfileVersion": 1,
  "requires": true,
  "dependencies": {
@@ -51,16 +51,8 @@
    "@types/node": {
      "version": "14.0.5",
      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.0.5.tgz",
-      "integrity": "sha512-90hiq6/VqtQgX8Sp0EzeIsv3r+ellbGj4URKj5j30tLlZvRUpnAe9YbYnjl3pJM93GyXU0tghHhvXHq+5rnCKA=="
-    },
-    "@types/node-fetch": {
-      "version": "2.5.7",
-      "resolved": "https://registry.npmjs.org/@types/node-fetch/-/node-fetch-2.5.7.tgz",
-      "integrity": "sha512-o2WVNf5UhWRkxlf6eq+jMZDu7kjgpgJfl4xVNlvryc95O/6F2ld8ztKX+qu+Rjyet93WAWm5LjeX9H5FGkODvw==",
-      "requires": {
-        "@types/node": "*",
-        "form-data": "^3.0.0"
-      }
+      "integrity": "sha512-90hiq6/VqtQgX8Sp0EzeIsv3r+ellbGj4URKj5j30tLlZvRUpnAe9YbYnjl3pJM93GyXU0tghHhvXHq+5rnCKA==",
+      "dev": true
    },
    "ansi-colors": {
      "version": "3.2.3",
@@ -96,7 +88,8 @@
    "arg": {
      "version": "4.1.3",
      "resolved": "https://registry.npmjs.org/arg/-/arg-4.1.3.tgz",
-      "integrity": "sha512-58S9QDqG0Xx27YwPSt9fJxivjYl432YCwfDMfZ+71RAqUrZef7LrKQZ3LHLOwCS4FLNBplP533Zx895SeOCHvA=="
+      "integrity": "sha512-58S9QDqG0Xx27YwPSt9fJxivjYl432YCwfDMfZ+71RAqUrZef7LrKQZ3LHLOwCS4FLNBplP533Zx895SeOCHvA==",
+      "dev": true
    },
    "argparse": {
      "version": "1.0.10",
@@ -113,10 +106,13 @@
      "integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
      "dev": true
    },
-    "asynckit": {
-      "version": "0.4.0",
-      "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
-      "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k="
+    "axios": {
+      "version": "0.19.2",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.2.tgz",
+      "integrity": "sha512-fjgm5MvRHLhx+osE2xoekY70AhARk3a6hkN+3Io1jc00jtquGvxYlKlsFUhmUET0V5te6CcZI7lcv2Ym61mjHA==",
+      "requires": {
+        "follow-redirects": "1.5.10"
+      }
    },
    "balanced-match": {
      "version": "1.0.0",
@@ -163,7 +159,8 @@
    "buffer-from": {
      "version": "1.1.1",
      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
-      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A=="
+      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==",
+      "dev": true
    },
    "builtin-modules": {
      "version": "1.1.1",
@@ -287,14 +284,6 @@
      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
      "dev": true
    },
-    "combined-stream": {
-      "version": "1.0.8",
-      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
-      "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
-      "requires": {
-        "delayed-stream": "~1.0.0"
-      }
-    },
    "commander": {
      "version": "2.20.3",
      "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
@@ -340,15 +329,11 @@
        "object-keys": "^1.0.12"
      }
    },
-    "delayed-stream": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
-      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk="
-    },
    "diff": {
      "version": "4.0.2",
      "resolved": "https://registry.npmjs.org/diff/-/diff-4.0.2.tgz",
-      "integrity": "sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A=="
+      "integrity": "sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==",
+      "dev": true
    },
    "doctrine": {
      "version": "0.7.2",
@@ -441,14 +426,27 @@
        "is-buffer": "~2.0.3"
      }
    },
-    "form-data": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/form-data/-/form-data-3.0.0.tgz",
-      "integrity": "sha512-CKMFDglpbMi6PyN+brwB9Q/GOw0eAnsrEZDgcsH5Krhz5Od/haKHAX0NmQfha2zPPz0JpWzA7GJHGSnvCRLWsg==",
+    "follow-redirects": {
+      "version": "1.5.10",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.5.10.tgz",
+      "integrity": "sha512-0V5l4Cizzvqt5D44aTXbFZz+FtyXV1vrDN6qrelxtfYQKW0KO0W2T/hkE8xvGa/540LkZlkaUjO4ailYTFtHVQ==",
      "requires": {
-        "asynckit": "^0.4.0",
-        "combined-stream": "^1.0.8",
-        "mime-types": "^2.1.12"
+        "debug": "=3.1.0"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
+          "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "ms": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+        }
      }
    },
    "fs.realpath": {
@@ -665,9 +663,9 @@
      }
    },
    "lodash": {
-      "version": "4.17.15",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
-      "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==",
+      "version": "4.17.19",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
+      "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ==",
      "dev": true
    },
    "log-symbols": {
@@ -682,20 +680,8 @@
    "make-error": {
      "version": "1.3.6",
      "resolved": "https://registry.npmjs.org/make-error/-/make-error-1.3.6.tgz",
-      "integrity": "sha512-s8UhlNe7vPKomQhC1qFelMokr/Sc3AgNbso3n74mVPA5LTZwkB9NlXf4XPamLxJE8h0gh73rM94xvwRT2CVInw=="
-    },
-    "mime-db": {
-      "version": "1.44.0",
-      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.44.0.tgz",
-      "integrity": "sha512-/NOTfLrsPBVeH7YtFPgsVWveuL+4SjjYxaQ1xtM1KMFj7HdxlBlxeyNLzhyJVx7r4rZGJAZ/6lkKCitSc/Nmpg=="
-    },
-    "mime-types": {
-      "version": "2.1.27",
-      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.27.tgz",
-      "integrity": "sha512-JIhqnCasI9yD+SsmkquHBxTSEuZdQX5BuQnS2Vc7puQQQ+8yiP5AY5uWhpdv4YL4VM5c6iliiYWPgJ/nJQLp7w==",
-      "requires": {
-        "mime-db": "1.44.0"
-      }
+      "integrity": "sha512-s8UhlNe7vPKomQhC1qFelMokr/Sc3AgNbso3n74mVPA5LTZwkB9NlXf4XPamLxJE8h0gh73rM94xvwRT2CVInw==",
+      "dev": true
    },
    "minimatch": {
      "version": "3.0.4",
@@ -816,11 +802,6 @@
        "semver": "^5.7.0"
      }
    },
-    "node-fetch": {
-      "version": "2.6.0",
-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.0.tgz",
-      "integrity": "sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA=="
-    },
    "normalize-path": {
      "version": "3.0.0",
      "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
@@ -969,12 +950,14 @@
    "source-map": {
      "version": "0.6.1",
      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
+      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+      "dev": true
    },
    "source-map-support": {
      "version": "0.5.19",
      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.19.tgz",
      "integrity": "sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==",
+      "dev": true,
      "requires": {
        "buffer-from": "^1.0.0",
        "source-map": "^0.6.0"
@@ -1075,6 +1058,7 @@
      "version": "8.10.1",
      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-8.10.1.tgz",
      "integrity": "sha512-bdNz1L4ekHiJul6SHtZWs1ujEKERJnHs4HxN7rjTyyVOFf3HaJ6sLqe6aPG62XTzAB/63pKRh5jTSWL0D7bsvw==",
+      "dev": true,
      "requires": {
        "arg": "^4.1.0",
        "diff": "^4.0.1",
@@ -1165,7 +1149,8 @@
    "typescript": {
      "version": "3.9.3",
      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.3.tgz",
-      "integrity": "sha512-D/wqnB2xzNFIcoBG9FG8cXRDjiqSTbG2wd8DMZeQyJlP1vfTkIxH4GKveWaEBYySKIg+USu+E+EDIR47SqnaMQ=="
+      "integrity": "sha512-D/wqnB2xzNFIcoBG9FG8cXRDjiqSTbG2wd8DMZeQyJlP1vfTkIxH4GKveWaEBYySKIg+USu+E+EDIR47SqnaMQ==",
+      "dev": true
    },
    "which": {
      "version": "1.3.1",
@@ -1312,7 +1297,8 @@
    "yn": {
      "version": "3.1.1",
      "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz",
-      "integrity": "sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q=="
+      "integrity": "sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==",
+      "dev": true
    }
  }
 }
--- a/package.json
+++ b/package.json
@@ -1,8 +1,13 @@
 {
  "name": "gas-price-oracle",
-  "version": "0.1.1",
+  "version": "0.1.5",
  "description": "Gas Price Oracle library for Ethereum dApps.",
  "main": "lib/index.js",
+  "homepage": "https://github.com/peppersec/gas-price-oracle",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/peppersec/gas-price-oracle.git"
+  },
  "types": "lib/index.d.ts",
  "prepare": "npm run build",
  "prepublishOnly": "npm test && npm run lint",
@@ -12,27 +17,31 @@
    "lint": "tslint -p tsconfig.json"
  },
  "author": "Alexey Pertsev <alexey@peppersec.com> (https://peppersec.com)",
-  "keywords": ["Gas", "Gas price", "Ethereum", "Oracle"],
+  "keywords": [
+    "Gas",
+    "Gas price",
+    "Ethereum",
+    "Oracle"
+  ],
  "license": "MIT",
  "devDependencies": {
    "@types/chai": "^4.2.11",
    "@types/mocha": "^7.0.2",
    "@types/mockery": "^1.4.29",
+    "@types/node": "^14.0.5",
    "chai": "^4.2.0",
    "chai-as-promised": "^7.1.1",
    "mocha": "^7.2.0",
    "mockery": "^2.1.0",
    "tslint": "^6.1.2",
-    "tslint-config-standard": "^9.0.0"
-  },
-  "dependencies": {
-    "@types/node": "^14.0.5",
-    "@types/node-fetch": "^2.5.7",
-    "bignumber.js": "^9.0.0",
-    "node-fetch": "^2.6.0",
+    "tslint-config-standard": "^9.0.0",
    "ts-node": "^8.10.1",
    "typescript": "^3.9.3"
  },
+  "dependencies": {
+    "axios": "^0.19.2",
+    "bignumber.js": "^9.0.0"
+  },
  "files": [
    "lib/**/*"
  ]
--- a/src/config.ts
+++ b/src/config.ts
@@ -44,7 +44,7 @@ const poa: OffChainOracle = {
 const chainlink: OnChainOracle = {
  name: 'chainlink',
  callData: '0x50d25bcd',
-  contract: '0xA417221ef64b1549575C977764E651c9FAB50141',
+  contract: '0x169E633A2D1E6c10dD91238Ba11c4A708dfEF37C',
  denominator: '1000000000'
 };

--- a/src/index.ts
+++ b/src/index.ts
@@ -1,32 +1,27 @@
-import fetch from 'node-fetch';
+import axios from 'axios';
 import config from './config';
-import { GasPrice, OffChainOracle, OnChainOracle } from './types';
+import { GasPrice, OffChainOracle, OnChainOracle, ConstructorArgs } from './types';
 import BigNumber from 'bignumber.js';

 export class GasPriceOracle {
-  lastGasPrice: GasPrice = {
-    instant: 40,
-    fast: 21,
-    standard: 10,
-    low: 1
-  };
+  lastGasPrice: GasPrice;
  defaultRpc = 'https://api.mycryptoapi.com/eth';
  offChainOracles = { ...config.offChainOracles };
  onChainOracles = { ...config.onChainOracles };

-  constructor(defaultRpc?: string) {
-    if (defaultRpc) {
-      this.defaultRpc = defaultRpc;
+  constructor(options: ConstructorArgs) {
+    if (options && options.defaultRpc) {
+      this.defaultRpc = options.defaultRpc;
    }
  }

-  async fetchGasPricesOffChain(throwIfFailsToFetch = true): Promise<GasPrice> {
+  async fetchGasPricesOffChain(): Promise<GasPrice> {
    for (let oracle of Object.values(this.offChainOracles)) {
      const { name, url, instantPropertyName, fastPropertyName, standardPropertyName, lowPropertyName, denominator } = oracle;
      try {
-        const response = await fetch(url);
+        const response = await axios.get(url, { timeout: 10000 });
        if (response.status === 200) {
-          const gas = await response.json();
+          const gas = response.data;
          if (Number(gas[fastPropertyName]) === 0) {
            throw new Error(`${name} oracle provides corrupted values`);
          }
@@ -36,8 +31,7 @@ export class GasPriceOracle {
            standard: parseFloat(gas[standardPropertyName]) / denominator,
            low: parseFloat(gas[lowPropertyName]) / denominator
          };
-          this.lastGasPrice = gasPrices;
-          return this.lastGasPrice;
+          return gasPrices;
        } else {
          throw new Error(`Fetch gasPrice from ${name} oracle failed. Trying another one...`);
        }
@@ -45,45 +39,30 @@ export class GasPriceOracle {
        console.error(e.message);
      }
    }
-    if (throwIfFailsToFetch) {
    throw new Error('All oracles are down. Probaly network error.');
  }
-    return this.lastGasPrice;
-  }

-  async fetchGasPricesOnChain(throwIfFailsToFetch = true): Promise<GasPrice> {
+  async fetchGasPricesOnChain(): Promise<number> {
    for (let oracle of Object.values(this.onChainOracles)) {
      const { name, callData, contract, denominator } = oracle;
      let { rpc } = oracle;
      rpc = rpc ? rpc : this.defaultRpc;
-      const body = { jsonrpc: '2.0',
+      const body = {
+        jsonrpc: '2.0',
        id: 1337,
        method: 'eth_call',
        params: [{ 'data': callData, 'to': contract }, 'latest']
      };
      try {
-        const response = await fetch(rpc, {
-          headers: {
-            'content-type': 'application/json'
-          },
-          body: JSON.stringify(body),
-          method: 'POST'
-        });
+        const response = await axios.post(rpc, body, { timeout: 10000 });
        if (response.status === 200) {
-          const { result } = await response.json();
+          const { result } = response.data;
          let fastGasPrice = new BigNumber(result);
          if (fastGasPrice.isZero()) {
            throw new Error(`${name} oracle provides corrupted values`);
          }
          fastGasPrice = fastGasPrice.div(denominator);
-          const gasPrices: GasPrice = {
-            instant: fastGasPrice.multipliedBy(1.3).toNumber(),
-            fast: fastGasPrice.toNumber(),
-            standard: fastGasPrice.multipliedBy(0.85).toNumber(),
-            low: fastGasPrice.multipliedBy(0.5).toNumber()
-          };
-          this.lastGasPrice = gasPrices;
-          return this.lastGasPrice;
+          return fastGasPrice.toNumber();
        } else {
          throw new Error(`Fetch gasPrice from ${name} oracle failed. Trying another one...`);
        }
@@ -91,29 +70,38 @@ export class GasPriceOracle {
        console.error(e.message);
      }
    }
-    if (throwIfFailsToFetch) {
    throw new Error('All oracles are down. Probaly network error.');
  }
-    return this.lastGasPrice;
-  }

-  async gasPrices(): Promise<GasPrice> {
-    let gas = this.lastGasPrice;
+  async gasPrices(fallbackGasPrices?: GasPrice): Promise<GasPrice> {
+    const defaultFastGas = 22;
+    const defaultFallbackGasPrices = {
+      instant: defaultFastGas * 1.3,
+      fast: defaultFastGas,
+      standard: defaultFastGas * 0.85,
+      low: defaultFastGas * 0.5
+    };
+    this.lastGasPrice = this.lastGasPrice || fallbackGasPrices || defaultFallbackGasPrices;
    try {
-      gas = await this.fetchGasPricesOffChain();
-      return gas;
+      this.lastGasPrice = await this.fetchGasPricesOffChain();
+      return this.lastGasPrice;
    } catch (e) {
      console.log('Failed to fetch gas prices from offchain oracles. Trying onchain ones...');
    }

    try {
-      gas = await this.fetchGasPricesOnChain();
-      return gas;
+      const fastGas = await this.fetchGasPricesOnChain();
+      this.lastGasPrice = {
+        instant: fastGas * 1.3,
+        fast: fastGas,
+        standard: fastGas * 0.85,
+        low: fastGas * 0.5
+      };
+      return this.lastGasPrice;
    } catch (e) {
      console.log('Failed to fetch gas prices from onchain oracles. Last known gas will be returned');
    }
-
-    return gas;
+    return this.lastGasPrice;
  }

  addOffChainOracle(oracle: OffChainOracle) {
--- a/src/types.ts
+++ b/src/types.ts
@@ -22,3 +22,7 @@ export type GasPrice = {
  standard: number;
  low: number;
 };
+
+export interface ConstructorArgs {
+  defaultRpc?: string;
+}
--- a/tests/index.test.ts
+++ b/tests/index.test.ts
@@ -9,10 +9,15 @@ chai.should();
 let oracle = new GasPriceOracle();

 before('before', function () {
-  let fetchMock = () => {
-    throw new Error('Mocked for tests');
+  let axiosMock = {
+    get: () => {
+      throw new Error('axios GET methdod is mocked for tests');
+    },
+    post: () => {
+      throw new Error('axios POST methdod is mocked for tests');
+    }
  };
-  mockery.registerMock('node-fetch', fetchMock);
+  mockery.registerMock('axios', axiosMock);
 });

 beforeEach('beforeEach', function () {
@@ -28,9 +33,9 @@ describe('fetchGasPricesOffChain', function () {
    gas.standard.should.be.a('number');
    gas.low.should.be.a('number');

-    gas.instant.should.be.above(gas.fast);
-    gas.fast.should.be.above(gas.standard);
-    gas.standard.should.be.above(gas.low);
+    gas.instant.should.be.at.least(gas.fast); // greater than or equal to the given number.
+    gas.fast.should.be.at.least(gas.standard);
+    gas.standard.should.be.at.least(gas.low);
    gas.low.should.not.be.equal(0);
  });

@@ -41,46 +46,26 @@ describe('fetchGasPricesOffChain', function () {
    await oracle.fetchGasPricesOffChain().should.be.rejectedWith('All oracles are down. Probaly network error.');
    mockery.disable();
  });
-
-  it('should not throw if throwIfFailsToFetch is false', async function () {
-    mockery.enable({ useCleanCache: true, warnOnUnregistered: false });
-    const { GasPriceOracle } = require('../src/index');
-    oracle = new GasPriceOracle();
-    await oracle.fetchGasPricesOffChain(false);
-    mockery.disable();
-  });
 });

 describe('fetchGasPricesOnChain', function () {
  it('should work', async function () {
-    const gas: GasPrice = await oracle.fetchGasPricesOnChain();
-
-    gas.instant.should.be.a('number');
-    gas.fast.should.be.a('number');
-    gas.standard.should.be.a('number');
-    gas.low.should.be.a('number');
-
-    gas.instant.should.be.above(gas.fast);
-    gas.fast.should.be.above(gas.standard);
-    gas.standard.should.be.above(gas.low);
-    gas.low.should.not.be.equal(0);
+    const gas: number = await oracle.fetchGasPricesOnChain();
+    gas.should.be.a('number');
+    gas.should.be.above(1);
+    gas.should.not.be.equal(0);
  });

  it('should work with custom rpc', async function () {
    const rpc = 'https://ethereum-rpc.trustwalletapp.com';
-    const oracle = new GasPriceOracle(rpc);
+    const oracle = new GasPriceOracle({ defaultRpc: rpc });
    oracle.defaultRpc.should.be.equal(rpc);
-    const gas: GasPrice = await oracle.fetchGasPricesOnChain();
+    const gas: number = await oracle.fetchGasPricesOnChain();

-    gas.instant.should.be.a('number');
-    gas.fast.should.be.a('number');
-    gas.standard.should.be.a('number');
-    gas.low.should.be.a('number');
+    gas.should.be.a('number');

-    gas.instant.should.be.above(gas.fast);
-    gas.fast.should.be.above(gas.standard);
-    gas.standard.should.be.above(gas.low);
-    gas.low.should.not.be.equal(0);
+    gas.should.be.above(1);
+    gas.should.not.be.equal(0);
  });

  it('should remove oracle', async function () {
@@ -95,17 +80,10 @@ describe('fetchGasPricesOnChain', function () {
    oracle.removeOnChainOracle('chainlink');
    await oracle.fetchGasPricesOnChain().should.be.rejectedWith('All oracles are down. Probaly network error.');
    oracle.addOnChainOracle(chainlink);
-    const gas: GasPrice = await oracle.fetchGasPricesOnChain();
+    const gas: number = await oracle.fetchGasPricesOnChain();

-    gas.instant.should.be.a('number');
-    gas.fast.should.be.a('number');
-    gas.standard.should.be.a('number');
-    gas.low.should.be.a('number');
-
-    gas.instant.should.be.above(gas.fast);
-    gas.fast.should.be.above(gas.standard);
-    gas.standard.should.be.above(gas.low);
-    gas.low.should.not.be.equal(0);
+    gas.should.be.a('number');
+    gas.should.not.be.equal(0);
  });

  it('should throw if all onchain oracles are down', async function () {
@@ -116,13 +94,6 @@ describe('fetchGasPricesOnChain', function () {
    mockery.disable();
  });

-  it('should not throw if throwIfFailsToFetch is false', async function () {
-    mockery.enable({ useCleanCache: true, warnOnUnregistered: false });
-    const { GasPriceOracle } = require('../src/index');
-    oracle = new GasPriceOracle();
-    await oracle.fetchGasPricesOnChain(false);
-    mockery.disable();
-  });
 });

 describe('gasPrice', function () {
@@ -134,11 +105,36 @@ describe('gasPrice', function () {
    gas.standard.should.be.a('number');
    gas.low.should.be.a('number');

-    gas.instant.should.be.above(gas.fast);
-    gas.fast.should.be.above(gas.standard);
-    gas.standard.should.be.above(gas.low);
+    gas.instant.should.be.at.least(gas.fast);
+    gas.fast.should.be.at.least(gas.standard);
+    gas.standard.should.be.at.least(gas.low);
    gas.low.should.not.be.equal(0);
  });
+  it('should fallback', async function () {
+    mockery.enable({ useCleanCache: true, warnOnUnregistered: false });
+    const { GasPriceOracle } = require('../src/index');
+    oracle = new GasPriceOracle();
+    const gas: GasPrice = await oracle.gasPrices();
+
+    gas.instant.should.be.equal(28.6);
+    gas.fast.should.be.equal(22);
+    gas.standard.should.be.equal(18.7);
+    gas.low.should.be.equal(11);
+    mockery.disable();
+  });
+
+  it('should fallback to set values', async function () {
+    mockery.enable({ useCleanCache: true, warnOnUnregistered: false });
+    const { GasPriceOracle } = require('../src/index');
+    oracle = new GasPriceOracle();
+    const gas: GasPrice = await oracle.gasPrices({ instant: 50, fast: 21, standard: 10, low: 3 });
+
+    gas.instant.should.be.equal(50);
+    gas.fast.should.be.equal(21);
+    gas.standard.should.be.equal(10);
+    gas.low.should.be.equal(3);
+    mockery.disable();
+  });
 });

 after('after', function () {
Author	SHA1	Message	Date
Alexey	8a21dcd282	bump version	2020-08-12 12:57:08 +03:00
Alexey	d3b942fdc7	fix tests	2020-08-12 12:53:43 +03:00
Alexey	4f346472c3	fix publish action	2020-08-12 12:37:51 +03:00
Roman Storm	c2584615d2	Merge pull request #1 from peppersec/dependabot/npm_and_yarn/lodash-4.17.19 Bump lodash from 4.17.15 to 4.17.19	2020-08-11 17:37:55 -07:00
Roman Storm	c24202608e	update onchain oracle	2020-08-11 17:36:37 -07:00
dependabot[bot]	b029bcc89b	Bump lodash from 4.17.15 to 4.17.19 Bumps [lodash](https://github.com/lodash/lodash) from 4.17.15 to 4.17.19. - [Release notes](https://github.com/lodash/lodash/releases) - [Commits](https://github.com/lodash/lodash/compare/4.17.15...4.17.19) Signed-off-by: dependabot[bot] <support@github.com>	2020-07-20 21:50:35 +00:00
Alexey	5c28cc6025	fix test	2020-06-04 18:49:16 +03:00
Alexey	4548e6badb	switch to axios	2020-06-04 18:45:33 +03:00
Alexey	82b6650a1c	update build shield	2020-06-04 10:16:04 +03:00
poma	4db4d8cf93	add CI and npm publish	2020-06-04 05:48:35 +03:00
Roman Storm	1be22264cd	update	2020-06-03 16:08:09 -07:00
Roman Storm	2b355c5da1	Create LICENSE	2020-06-03 14:11:01 -07:00