b3711af051
* cmd/swarm: minor cli flag text adjustments * swarm/api/http: sticky footer for swarm landing page using flex * swarm/api/http: sticky footer for error pages and fix for multiple choices * cmd/swarm, swarm/storage, swarm: fix mingw on windows test issues * cmd/swarm: update description of swarm cmd * swarm: added network ID test * cmd/swarm: support for smoke tests on the production swarm cluster * cmd/swarm/swarm-smoke: simplify cluster logic as per suggestion * swarm: propagate ctx to internal apis (#754) * swarm/metrics: collect disk measurements * swarm/bmt: fix io.Writer interface * Write now tolerates arbitrary variable buffers * added variable buffer tests * Write loop and finalise optimisation * refactor / rename * add tests for empty input * swarm/pss: (UPDATE) Generic notifications package (#744) swarm/pss: Generic package for creating pss notification svcs * swarm: Adding context to more functions * swarm/api: change colour of landing page in templates * swarm/api: change landing page to react to enter keypress
796 lines
23 KiB
Go
796 lines
23 KiB
Go
// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package stream
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import (
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"context"
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crand "crypto/rand"
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"fmt"
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"math/rand"
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"strings"
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"sync"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/p2p/discover"
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"github.com/ethereum/go-ethereum/p2p/simulations"
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"github.com/ethereum/go-ethereum/swarm/log"
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"github.com/ethereum/go-ethereum/swarm/network"
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streamTesting "github.com/ethereum/go-ethereum/swarm/network/stream/testing"
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"github.com/ethereum/go-ethereum/swarm/storage"
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)
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//constants for random file generation
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const (
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minFileSize = 2
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maxFileSize = 40
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)
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func initRetrievalTest() {
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//global func to get overlay address from discover ID
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toAddr = func(id discover.NodeID) *network.BzzAddr {
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addr := network.NewAddrFromNodeID(id)
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return addr
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}
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//global func to create local store
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createStoreFunc = createTestLocalStorageForId
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//local stores
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stores = make(map[discover.NodeID]storage.ChunkStore)
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//data directories for each node and store
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datadirs = make(map[discover.NodeID]string)
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//deliveries for each node
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deliveries = make(map[discover.NodeID]*Delivery)
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//global retrieve func
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getRetrieveFunc = func(id discover.NodeID) func(chunk *storage.Chunk) error {
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return func(chunk *storage.Chunk) error {
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skipCheck := true
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return deliveries[id].RequestFromPeers(chunk.Addr[:], skipCheck)
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}
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}
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//registries, map of discover.NodeID to its streamer
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registries = make(map[discover.NodeID]*TestRegistry)
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//not needed for this test but required from common_test for NewStreamService
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waitPeerErrC = make(chan error)
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//also not needed for this test but required for NewStreamService
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peerCount = func(id discover.NodeID) int {
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if ids[0] == id || ids[len(ids)-1] == id {
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return 1
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}
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return 2
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}
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}
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//This test is a retrieval test for nodes.
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//A configurable number of nodes can be
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//provided to the test.
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//Files are uploaded to nodes, other nodes try to retrieve the file
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//Number of nodes can be provided via commandline too.
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func TestFileRetrieval(t *testing.T) {
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if *nodes != 0 {
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fileRetrievalTest(t, *nodes)
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} else {
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nodeCnt := []int{16}
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//if the `longrunning` flag has been provided
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//run more test combinations
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if *longrunning {
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nodeCnt = append(nodeCnt, 32, 64, 128)
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}
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for _, n := range nodeCnt {
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fileRetrievalTest(t, n)
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}
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}
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}
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//This test is a retrieval test for nodes.
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//One node is randomly selected to be the pivot node.
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//A configurable number of chunks and nodes can be
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//provided to the test, the number of chunks is uploaded
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//to the pivot node and other nodes try to retrieve the chunk(s).
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//Number of chunks and nodes can be provided via commandline too.
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func TestRetrieval(t *testing.T) {
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//if nodes/chunks have been provided via commandline,
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//run the tests with these values
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if *nodes != 0 && *chunks != 0 {
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retrievalTest(t, *chunks, *nodes)
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} else {
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var nodeCnt []int
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var chnkCnt []int
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//if the `longrunning` flag has been provided
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//run more test combinations
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if *longrunning {
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nodeCnt = []int{16, 32, 128}
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chnkCnt = []int{4, 32, 256}
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} else {
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//default test
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nodeCnt = []int{16}
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chnkCnt = []int{32}
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}
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for _, n := range nodeCnt {
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for _, c := range chnkCnt {
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retrievalTest(t, c, n)
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}
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}
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}
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}
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//Every test runs 3 times, a live, a history, and a live AND history
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func fileRetrievalTest(t *testing.T, nodeCount int) {
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//test live and NO history
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log.Info("Testing live and no history", "nodeCount", nodeCount)
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live = true
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history = false
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err := runFileRetrievalTest(nodeCount)
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if err != nil {
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t.Fatal(err)
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}
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//test history only
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log.Info("Testing history only", "nodeCount", nodeCount)
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live = false
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history = true
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err = runFileRetrievalTest(nodeCount)
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if err != nil {
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t.Fatal(err)
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}
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//finally test live and history
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log.Info("Testing live and history", "nodeCount", nodeCount)
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live = true
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err = runFileRetrievalTest(nodeCount)
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if err != nil {
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t.Fatal(err)
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}
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}
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//Every test runs 3 times, a live, a history, and a live AND history
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func retrievalTest(t *testing.T, chunkCount int, nodeCount int) {
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//test live and NO history
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log.Info("Testing live and no history", "chunkCount", chunkCount, "nodeCount", nodeCount)
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live = true
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history = false
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err := runRetrievalTest(chunkCount, nodeCount)
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if err != nil {
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t.Fatal(err)
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}
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//test history only
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log.Info("Testing history only", "chunkCount", chunkCount, "nodeCount", nodeCount)
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live = false
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history = true
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err = runRetrievalTest(chunkCount, nodeCount)
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if err != nil {
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t.Fatal(err)
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}
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//finally test live and history
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log.Info("Testing live and history", "chunkCount", chunkCount, "nodeCount", nodeCount)
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live = true
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err = runRetrievalTest(chunkCount, nodeCount)
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if err != nil {
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t.Fatal(err)
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}
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}
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/*
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The upload is done by dependency to the global
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`live` and `history` variables;
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If `live` is set, first stream subscriptions are established,
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then files are uploaded to nodes.
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If `history` is enabled, first upload files, then build up subscriptions.
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The test loads a snapshot file to construct the swarm network,
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assuming that the snapshot file identifies a healthy
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kademlia network. Nevertheless a health check runs in the
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simulation's `action` function.
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The snapshot should have 'streamer' in its service list.
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*/
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func runFileRetrievalTest(nodeCount int) error {
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//for every run (live, history), int the variables
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initRetrievalTest()
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//the ids of the snapshot nodes, initiate only now as we need nodeCount
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ids = make([]discover.NodeID, nodeCount)
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//channel to check for disconnection errors
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disconnectC := make(chan error)
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//channel to close disconnection watcher routine
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quitC := make(chan struct{})
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//the test conf (using same as in `snapshot_sync_test`
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conf = &synctestConfig{}
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//map of overlay address to discover ID
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conf.addrToIdMap = make(map[string]discover.NodeID)
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//array where the generated chunk hashes will be stored
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conf.hashes = make([]storage.Address, 0)
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//load nodes from the snapshot file
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net, err := initNetWithSnapshot(nodeCount)
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if err != nil {
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return err
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}
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var rpcSubscriptionsWg sync.WaitGroup
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//do cleanup after test is terminated
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defer func() {
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//shutdown the snapshot network
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net.Shutdown()
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//after the test, clean up local stores initialized with createLocalStoreForId
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localStoreCleanup()
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//finally clear all data directories
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datadirsCleanup()
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}()
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//get the nodes of the network
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nodes := net.GetNodes()
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//iterate over all nodes...
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for c := 0; c < len(nodes); c++ {
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//create an array of discovery nodeIDS
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ids[c] = nodes[c].ID()
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a := network.ToOverlayAddr(ids[c].Bytes())
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//append it to the array of all overlay addresses
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conf.addrs = append(conf.addrs, a)
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conf.addrToIdMap[string(a)] = ids[c]
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}
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//needed for healthy call
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ppmap = network.NewPeerPotMap(testMinProxBinSize, conf.addrs)
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//an array for the random files
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var randomFiles []string
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//channel to signal when the upload has finished
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uploadFinished := make(chan struct{})
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//channel to trigger new node checks
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trigger := make(chan discover.NodeID)
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//simulation action
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action := func(ctx context.Context) error {
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//first run the health check on all nodes,
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//wait until nodes are all healthy
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ticker := time.NewTicker(200 * time.Millisecond)
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defer ticker.Stop()
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for range ticker.C {
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healthy := true
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for _, id := range ids {
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r := registries[id]
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//PeerPot for this node
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addr := common.Bytes2Hex(r.addr.OAddr)
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pp := ppmap[addr]
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//call Healthy RPC
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h := r.delivery.overlay.Healthy(pp)
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//print info
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log.Debug(r.delivery.overlay.String())
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log.Debug(fmt.Sprintf("IS HEALTHY: %t", h.GotNN && h.KnowNN && h.Full))
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if !h.GotNN || !h.Full {
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healthy = false
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break
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}
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}
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if healthy {
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break
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}
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}
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if history {
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log.Info("Uploading for history")
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//If testing only history, we upload the chunk(s) first
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conf.hashes, randomFiles, err = uploadFilesToNodes(nodes)
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if err != nil {
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return err
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}
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}
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//variables needed to wait for all subscriptions established before uploading
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errc := make(chan error)
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//now setup and start event watching in order to know when we can upload
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ctx, watchCancel := context.WithTimeout(context.Background(), MaxTimeout*time.Second)
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defer watchCancel()
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log.Info("Setting up stream subscription")
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//We need two iterations, one to subscribe to the subscription events
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//(so we know when setup phase is finished), and one to
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//actually run the stream subscriptions. We can't do it in the same iteration,
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//because while the first nodes in the loop are setting up subscriptions,
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//the latter ones have not subscribed to listen to peer events yet,
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//and then we miss events.
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//first iteration: setup disconnection watcher and subscribe to peer events
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for j, id := range ids {
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log.Trace(fmt.Sprintf("Subscribe to subscription events: %d", j))
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client, err := net.GetNode(id).Client()
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if err != nil {
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return err
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}
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wsDoneC := watchSubscriptionEvents(ctx, id, client, errc, quitC)
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// doneC is nil, the error happened which is sent to errc channel, already
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if wsDoneC == nil {
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continue
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}
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rpcSubscriptionsWg.Add(1)
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go func() {
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<-wsDoneC
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rpcSubscriptionsWg.Done()
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}()
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//watch for peers disconnecting
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wdDoneC, err := streamTesting.WatchDisconnections(id, client, disconnectC, quitC)
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if err != nil {
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return err
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}
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rpcSubscriptionsWg.Add(1)
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go func() {
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<-wdDoneC
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rpcSubscriptionsWg.Done()
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}()
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}
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//second iteration: start syncing and setup stream subscriptions
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for j, id := range ids {
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log.Trace(fmt.Sprintf("Start syncing and stream subscriptions: %d", j))
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client, err := net.GetNode(id).Client()
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if err != nil {
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return err
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}
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//start syncing!
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var cnt int
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err = client.CallContext(ctx, &cnt, "stream_startSyncing")
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if err != nil {
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return err
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}
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//increment the number of subscriptions we need to wait for
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//by the count returned from startSyncing (SYNC subscriptions)
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subscriptionCount += cnt
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//now also add the number of RETRIEVAL_REQUEST subscriptions
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for snid := range registries[id].peers {
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subscriptionCount++
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err = client.CallContext(ctx, nil, "stream_subscribeStream", snid, NewStream(swarmChunkServerStreamName, "", false), nil, Top)
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if err != nil {
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return err
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}
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}
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}
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//now wait until the number of expected subscriptions has been finished
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//`watchSubscriptionEvents` will write with a `nil` value to errc
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//every time a `SubscriptionMsg` has been received
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for err := range errc {
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if err != nil {
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return err
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}
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//`nil` received, decrement count
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subscriptionCount--
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//all subscriptions received
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if subscriptionCount == 0 {
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break
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}
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}
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log.Info("Stream subscriptions successfully requested, action terminated")
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if live {
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//upload generated files to nodes
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var hashes []storage.Address
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var rfiles []string
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hashes, rfiles, err = uploadFilesToNodes(nodes)
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if err != nil {
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return err
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}
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conf.hashes = append(conf.hashes, hashes...)
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randomFiles = append(randomFiles, rfiles...)
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//signal to the trigger loop that the upload has finished
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uploadFinished <- struct{}{}
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}
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return nil
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}
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//check defines what will be checked during the test
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check := func(ctx context.Context, id discover.NodeID) (bool, error) {
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select {
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case <-ctx.Done():
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return false, ctx.Err()
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case e := <-disconnectC:
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log.Error(e.Error())
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return false, fmt.Errorf("Disconnect event detected, network unhealthy")
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default:
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}
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log.Trace(fmt.Sprintf("Checking node: %s", id))
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//if there are more than one chunk, test only succeeds if all expected chunks are found
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allSuccess := true
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//check on the node's FileStore (netstore)
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fileStore := registries[id].fileStore
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//check all chunks
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for i, hash := range conf.hashes {
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reader, _ := fileStore.Retrieve(context.TODO(), hash)
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//check that we can read the file size and that it corresponds to the generated file size
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if s, err := reader.Size(nil); err != nil || s != int64(len(randomFiles[i])) {
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allSuccess = false
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log.Warn("Retrieve error", "err", err, "hash", hash, "nodeId", id)
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} else {
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log.Debug(fmt.Sprintf("File with root hash %x successfully retrieved", hash))
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}
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}
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return allSuccess, nil
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}
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//for each tick, run the checks on all nodes
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timingTicker := time.NewTicker(5 * time.Second)
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defer timingTicker.Stop()
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go func() {
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//for live upload, we should wait for uploads to have finished
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//before starting to trigger the checks, due to file size
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if live {
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<-uploadFinished
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}
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for range timingTicker.C {
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for i := 0; i < len(ids); i++ {
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log.Trace(fmt.Sprintf("triggering step %d, id %s", i, ids[i]))
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trigger <- ids[i]
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}
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}
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}()
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log.Info("Starting simulation run...")
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timeout := MaxTimeout * time.Second
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ctx, cancel := context.WithTimeout(context.Background(), timeout)
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defer cancel()
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//run the simulation
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result := simulations.NewSimulation(net).Run(ctx, &simulations.Step{
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Action: action,
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Trigger: trigger,
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Expect: &simulations.Expectation{
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Nodes: ids,
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Check: check,
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},
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})
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if result.Error != nil {
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return result.Error
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}
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return nil
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}
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|
|
/*
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|
The test generates the given number of chunks.
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|
|
|
The upload is done by dependency to the global
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|
`live` and `history` variables;
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|
|
|
If `live` is set, first stream subscriptions are established, then
|
|
upload to a random node.
|
|
|
|
If `history` is enabled, first upload then build up subscriptions.
|
|
|
|
The test loads a snapshot file to construct the swarm network,
|
|
assuming that the snapshot file identifies a healthy
|
|
kademlia network. Nevertheless a health check runs in the
|
|
simulation's `action` function.
|
|
|
|
The snapshot should have 'streamer' in its service list.
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|
*/
|
|
func runRetrievalTest(chunkCount int, nodeCount int) error {
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|
//for every run (live, history), int the variables
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initRetrievalTest()
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|
//the ids of the snapshot nodes, initiate only now as we need nodeCount
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ids = make([]discover.NodeID, nodeCount)
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//channel to check for disconnection errors
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disconnectC := make(chan error)
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//channel to close disconnection watcher routine
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quitC := make(chan struct{})
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//the test conf (using same as in `snapshot_sync_test`
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|
conf = &synctestConfig{}
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//map of overlay address to discover ID
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conf.addrToIdMap = make(map[string]discover.NodeID)
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//array where the generated chunk hashes will be stored
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conf.hashes = make([]storage.Address, 0)
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//load nodes from the snapshot file
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net, err := initNetWithSnapshot(nodeCount)
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if err != nil {
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return err
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}
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var rpcSubscriptionsWg sync.WaitGroup
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|
//do cleanup after test is terminated
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defer func() {
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//shutdown the snapshot network
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net.Shutdown()
|
|
//after the test, clean up local stores initialized with createLocalStoreForId
|
|
localStoreCleanup()
|
|
//finally clear all data directories
|
|
datadirsCleanup()
|
|
}()
|
|
//get the nodes of the network
|
|
nodes := net.GetNodes()
|
|
//select one index at random...
|
|
idx := rand.Intn(len(nodes))
|
|
//...and get the the node at that index
|
|
//this is the node selected for upload
|
|
uploadNode := nodes[idx]
|
|
//iterate over all nodes...
|
|
for c := 0; c < len(nodes); c++ {
|
|
//create an array of discovery nodeIDS
|
|
ids[c] = nodes[c].ID()
|
|
a := network.ToOverlayAddr(ids[c].Bytes())
|
|
//append it to the array of all overlay addresses
|
|
conf.addrs = append(conf.addrs, a)
|
|
conf.addrToIdMap[string(a)] = ids[c]
|
|
}
|
|
|
|
//needed for healthy call
|
|
ppmap = network.NewPeerPotMap(testMinProxBinSize, conf.addrs)
|
|
|
|
trigger := make(chan discover.NodeID)
|
|
//simulation action
|
|
action := func(ctx context.Context) error {
|
|
//first run the health check on all nodes,
|
|
//wait until nodes are all healthy
|
|
ticker := time.NewTicker(200 * time.Millisecond)
|
|
defer ticker.Stop()
|
|
for range ticker.C {
|
|
healthy := true
|
|
for _, id := range ids {
|
|
r := registries[id]
|
|
//PeerPot for this node
|
|
addr := common.Bytes2Hex(network.ToOverlayAddr(id.Bytes()))
|
|
pp := ppmap[addr]
|
|
//call Healthy RPC
|
|
h := r.delivery.overlay.Healthy(pp)
|
|
//print info
|
|
log.Debug(r.delivery.overlay.String())
|
|
log.Debug(fmt.Sprintf("IS HEALTHY: %t", h.GotNN && h.KnowNN && h.Full))
|
|
if !h.GotNN || !h.Full {
|
|
healthy = false
|
|
break
|
|
}
|
|
}
|
|
if healthy {
|
|
break
|
|
}
|
|
}
|
|
|
|
if history {
|
|
log.Info("Uploading for history")
|
|
//If testing only history, we upload the chunk(s) first
|
|
conf.hashes, err = uploadFileToSingleNodeStore(uploadNode.ID(), chunkCount)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
//variables needed to wait for all subscriptions established before uploading
|
|
errc := make(chan error)
|
|
|
|
//now setup and start event watching in order to know when we can upload
|
|
ctx, watchCancel := context.WithTimeout(context.Background(), MaxTimeout*time.Second)
|
|
defer watchCancel()
|
|
|
|
log.Info("Setting up stream subscription")
|
|
//We need two iterations, one to subscribe to the subscription events
|
|
//(so we know when setup phase is finished), and one to
|
|
//actually run the stream subscriptions. We can't do it in the same iteration,
|
|
//because while the first nodes in the loop are setting up subscriptions,
|
|
//the latter ones have not subscribed to listen to peer events yet,
|
|
//and then we miss events.
|
|
|
|
//first iteration: setup disconnection watcher and subscribe to peer events
|
|
for j, id := range ids {
|
|
log.Trace(fmt.Sprintf("Subscribe to subscription events: %d", j))
|
|
client, err := net.GetNode(id).Client()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
//check for `SubscribeMsg` events to know when setup phase is complete
|
|
wsDoneC := watchSubscriptionEvents(ctx, id, client, errc, quitC)
|
|
// doneC is nil, the error happened which is sent to errc channel, already
|
|
if wsDoneC == nil {
|
|
continue
|
|
}
|
|
rpcSubscriptionsWg.Add(1)
|
|
go func() {
|
|
<-wsDoneC
|
|
rpcSubscriptionsWg.Done()
|
|
}()
|
|
|
|
//watch for peers disconnecting
|
|
wdDoneC, err := streamTesting.WatchDisconnections(id, client, disconnectC, quitC)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
rpcSubscriptionsWg.Add(1)
|
|
go func() {
|
|
<-wdDoneC
|
|
rpcSubscriptionsWg.Done()
|
|
}()
|
|
}
|
|
|
|
//second iteration: start syncing and setup stream subscriptions
|
|
for j, id := range ids {
|
|
log.Trace(fmt.Sprintf("Start syncing and stream subscriptions: %d", j))
|
|
client, err := net.GetNode(id).Client()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
//start syncing!
|
|
var cnt int
|
|
err = client.CallContext(ctx, &cnt, "stream_startSyncing")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
//increment the number of subscriptions we need to wait for
|
|
//by the count returned from startSyncing (SYNC subscriptions)
|
|
subscriptionCount += cnt
|
|
//now also add the number of RETRIEVAL_REQUEST subscriptions
|
|
for snid := range registries[id].peers {
|
|
subscriptionCount++
|
|
err = client.CallContext(ctx, nil, "stream_subscribeStream", snid, NewStream(swarmChunkServerStreamName, "", false), nil, Top)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
//now wait until the number of expected subscriptions has been finished
|
|
//`watchSubscriptionEvents` will write with a `nil` value to errc
|
|
//every time a `SubscriptionMsg` has been received
|
|
for err := range errc {
|
|
if err != nil {
|
|
return err
|
|
}
|
|
//`nil` received, decrement count
|
|
subscriptionCount--
|
|
//all subscriptions received
|
|
if subscriptionCount == 0 {
|
|
break
|
|
}
|
|
}
|
|
|
|
log.Info("Stream subscriptions successfully requested, action terminated")
|
|
|
|
if live {
|
|
//now upload the chunks to the selected random single node
|
|
chnks, err := uploadFileToSingleNodeStore(uploadNode.ID(), chunkCount)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
conf.hashes = append(conf.hashes, chnks...)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
chunkSize := storage.DefaultChunkSize
|
|
|
|
//check defines what will be checked during the test
|
|
check := func(ctx context.Context, id discover.NodeID) (bool, error) {
|
|
|
|
//don't check the uploader node
|
|
if id == uploadNode.ID() {
|
|
return true, nil
|
|
}
|
|
|
|
select {
|
|
case <-ctx.Done():
|
|
return false, ctx.Err()
|
|
case e := <-disconnectC:
|
|
log.Error(e.Error())
|
|
return false, fmt.Errorf("Disconnect event detected, network unhealthy")
|
|
default:
|
|
}
|
|
log.Trace(fmt.Sprintf("Checking node: %s", id))
|
|
//if there are more than one chunk, test only succeeds if all expected chunks are found
|
|
allSuccess := true
|
|
|
|
//check on the node's FileStore (netstore)
|
|
fileStore := registries[id].fileStore
|
|
//check all chunks
|
|
for _, chnk := range conf.hashes {
|
|
reader, _ := fileStore.Retrieve(context.TODO(), chnk)
|
|
//assuming that reading the Size of the chunk is enough to know we found it
|
|
if s, err := reader.Size(nil); err != nil || s != chunkSize {
|
|
allSuccess = false
|
|
log.Warn("Retrieve error", "err", err, "chunk", chnk, "nodeId", id)
|
|
} else {
|
|
log.Debug(fmt.Sprintf("Chunk %x found", chnk))
|
|
}
|
|
}
|
|
return allSuccess, nil
|
|
}
|
|
|
|
//for each tick, run the checks on all nodes
|
|
timingTicker := time.NewTicker(5 * time.Second)
|
|
defer timingTicker.Stop()
|
|
go func() {
|
|
for range timingTicker.C {
|
|
for i := 0; i < len(ids); i++ {
|
|
log.Trace(fmt.Sprintf("triggering step %d, id %s", i, ids[i]))
|
|
trigger <- ids[i]
|
|
}
|
|
}
|
|
}()
|
|
|
|
log.Info("Starting simulation run...")
|
|
|
|
timeout := MaxTimeout * time.Second
|
|
ctx, cancel := context.WithTimeout(context.Background(), timeout)
|
|
defer cancel()
|
|
|
|
//run the simulation
|
|
result := simulations.NewSimulation(net).Run(ctx, &simulations.Step{
|
|
Action: action,
|
|
Trigger: trigger,
|
|
Expect: &simulations.Expectation{
|
|
Nodes: ids,
|
|
Check: check,
|
|
},
|
|
})
|
|
|
|
if result.Error != nil {
|
|
return result.Error
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
//upload generated files to nodes
|
|
//every node gets one file uploaded
|
|
func uploadFilesToNodes(nodes []*simulations.Node) ([]storage.Address, []string, error) {
|
|
nodeCnt := len(nodes)
|
|
log.Debug(fmt.Sprintf("Uploading %d files to nodes", nodeCnt))
|
|
//array holding generated files
|
|
rfiles := make([]string, nodeCnt)
|
|
//array holding the root hashes of the files
|
|
rootAddrs := make([]storage.Address, nodeCnt)
|
|
|
|
var err error
|
|
//for every node, generate a file and upload
|
|
for i, n := range nodes {
|
|
id := n.ID()
|
|
fileStore := registries[id].fileStore
|
|
//generate a file
|
|
rfiles[i], err = generateRandomFile()
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
//store it (upload it) on the FileStore
|
|
ctx := context.TODO()
|
|
rk, wait, err := fileStore.Store(ctx, strings.NewReader(rfiles[i]), int64(len(rfiles[i])), false)
|
|
log.Debug("Uploaded random string file to node")
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
err = wait(ctx)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
rootAddrs[i] = rk
|
|
}
|
|
return rootAddrs, rfiles, nil
|
|
}
|
|
|
|
//generate a random file (string)
|
|
func generateRandomFile() (string, error) {
|
|
//generate a random file size between minFileSize and maxFileSize
|
|
fileSize := rand.Intn(maxFileSize-minFileSize) + minFileSize
|
|
log.Debug(fmt.Sprintf("Generated file with filesize %d kB", fileSize))
|
|
b := make([]byte, fileSize*1024)
|
|
_, err := crand.Read(b)
|
|
if err != nil {
|
|
log.Error("Error generating random file.", "err", err)
|
|
return "", err
|
|
}
|
|
return string(b), nil
|
|
}
|