116 lines
3.2 KiB
Go
116 lines
3.2 KiB
Go
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// Copyright 2018 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU 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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// go-ethereum 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 General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"crypto/md5"
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crand "crypto/rand"
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"fmt"
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"io"
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"math/rand"
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"time"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/metrics"
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"github.com/pborman/uuid"
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cli "gopkg.in/urfave/cli.v1"
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)
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var seed = time.Now().UTC().UnixNano()
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func init() {
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rand.Seed(seed)
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}
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type uploadResult struct {
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hash string
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digest []byte
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}
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func slidingWindow(c *cli.Context) error {
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generateEndpoints(scheme, cluster, appName, from, to)
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hashes := []uploadResult{} //swarm hashes of the uploads
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nodes := to - from
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const iterationTimeout = 30 * time.Second
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log.Info("sliding window test started", "nodes", nodes, "filesize(kb)", filesize, "timeout", timeout)
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uploadedBytes := 0
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networkDepth := 0
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errored := false
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outer:
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for {
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log.Info("uploading to "+endpoints[0]+" and syncing", "seed", seed)
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h := md5.New()
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r := io.TeeReader(io.LimitReader(crand.Reader, int64(filesize*1000)), h)
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t1 := time.Now()
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hash, err := upload(r, filesize*1000, endpoints[0])
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if err != nil {
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log.Error(err.Error())
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return err
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}
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metrics.GetOrRegisterResettingTimer("sliding-window.upload-time", nil).UpdateSince(t1)
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fhash := h.Sum(nil)
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log.Info("uploaded successfully", "hash", hash, "digest", fmt.Sprintf("%x", fhash), "sleeping", syncDelay)
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hashes = append(hashes, uploadResult{hash: hash, digest: fhash})
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time.Sleep(time.Duration(syncDelay) * time.Second)
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uploadedBytes += filesize * 1000
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for i, v := range hashes {
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timeout := time.After(time.Duration(timeout) * time.Second)
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errored = false
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inner:
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for {
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select {
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case <-timeout:
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errored = true
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log.Error("error retrieving hash. timeout", "hash idx", i, "err", err)
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metrics.GetOrRegisterCounter("sliding-window.single.error", nil).Inc(1)
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break inner
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default:
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randIndex := 1 + rand.Intn(len(endpoints)-1)
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ruid := uuid.New()[:8]
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start := time.Now()
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err := fetch(v.hash, endpoints[randIndex], v.digest, ruid)
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if err != nil {
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continue inner
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}
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metrics.GetOrRegisterResettingTimer("sliding-window.single.fetch-time", nil).UpdateSince(start)
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break inner
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}
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}
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if errored {
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break outer
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}
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networkDepth = i
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metrics.GetOrRegisterGauge("sliding-window.network-depth", nil).Update(int64(networkDepth))
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}
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}
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log.Info("sliding window test finished", "errored?", errored, "networkDepth", networkDepth, "networkDepth(kb)", networkDepth*filesize)
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log.Info("stats", "uploadedFiles", len(hashes), "uploadedKb", uploadedBytes/1000, "filesizeKb", filesize)
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return nil
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}
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