diff --git a/cmd/swarm/swarm-smoke/feed_upload_and_sync.go b/cmd/swarm/swarm-smoke/feed_upload_and_sync.go index 2c5e3fd23..a322ba89c 100644 --- a/cmd/swarm/swarm-smoke/feed_upload_and_sync.go +++ b/cmd/swarm/swarm-smoke/feed_upload_and_sync.go @@ -2,13 +2,11 @@ package main import ( "bytes" - "context" "crypto/md5" + crand "crypto/rand" "fmt" "io" "io/ioutil" - "net/http" - "net/http/httptrace" "os" "os/exec" "strings" @@ -18,13 +16,7 @@ import ( "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/metrics" - "github.com/ethereum/go-ethereum/swarm/api/client" - "github.com/ethereum/go-ethereum/swarm/spancontext" "github.com/ethereum/go-ethereum/swarm/storage/feed" - "github.com/ethereum/go-ethereum/swarm/testutil" - colorable "github.com/mattn/go-colorable" - opentracing "github.com/opentracing/opentracing-go" "github.com/pborman/uuid" cli "gopkg.in/urfave/cli.v1" ) @@ -33,27 +25,6 @@ const ( feedRandomDataLength = 8 ) -func cliFeedUploadAndSync(c *cli.Context) error { - metrics.GetOrRegisterCounter("feed-and-sync", nil).Inc(1) - log.Root().SetHandler(log.CallerFileHandler(log.LvlFilterHandler(log.Lvl(verbosity), log.StreamHandler(colorable.NewColorableStderr(), log.TerminalFormat(true))))) - - errc := make(chan error) - go func() { - errc <- feedUploadAndSync(c) - }() - - select { - case err := <-errc: - if err != nil { - metrics.GetOrRegisterCounter("feed-and-sync.fail", nil).Inc(1) - } - return err - case <-time.After(time.Duration(timeout) * time.Second): - metrics.GetOrRegisterCounter("feed-and-sync.timeout", nil).Inc(1) - return fmt.Errorf("timeout after %v sec", timeout) - } -} - // TODO: retrieve with manifest + extract repeating code func feedUploadAndSync(c *cli.Context) error { defer func(now time.Time) { log.Info("total time", "time", time.Since(now), "size (kb)", filesize) }(time.Now()) @@ -232,9 +203,10 @@ func feedUploadAndSync(c *cli.Context) error { seed := int(time.Now().UnixNano() / 1e6) log.Info("feed uploading to "+endpoints[0]+" and syncing", "seed", seed) - randomBytes := testutil.RandomBytes(seed, filesize*1000) + h = md5.New() + r := io.TeeReader(io.LimitReader(crand.Reader, int64(filesize*1000)), h) - hash, err := upload(&randomBytes, endpoints[0]) + hash, err := upload(r, filesize*1000, endpoints[0]) if err != nil { return err } @@ -243,10 +215,7 @@ func feedUploadAndSync(c *cli.Context) error { return err } multihashHex := hexutil.Encode(hashBytes) - fileHash, err := digest(bytes.NewReader(randomBytes)) - if err != nil { - return err - } + fileHash := h.Sum(nil) log.Info("uploaded successfully", "hash", hash, "digest", fmt.Sprintf("%x", fileHash)) @@ -307,60 +276,3 @@ func feedUploadAndSync(c *cli.Context) error { return nil } - -func fetchFeed(topic string, user string, endpoint string, original []byte, ruid string) error { - ctx, sp := spancontext.StartSpan(context.Background(), "feed-and-sync.fetch") - defer sp.Finish() - - log.Trace("sleeping", "ruid", ruid) - time.Sleep(3 * time.Second) - - log.Trace("http get request (feed)", "ruid", ruid, "api", endpoint, "topic", topic, "user", user) - - var tn time.Time - reqUri := endpoint + "/bzz-feed:/?topic=" + topic + "&user=" + user - req, _ := http.NewRequest("GET", reqUri, nil) - - opentracing.GlobalTracer().Inject( - sp.Context(), - opentracing.HTTPHeaders, - opentracing.HTTPHeadersCarrier(req.Header)) - - trace := client.GetClientTrace("feed-and-sync - http get", "feed-and-sync", ruid, &tn) - - req = req.WithContext(httptrace.WithClientTrace(ctx, trace)) - transport := http.DefaultTransport - - //transport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true} - - tn = time.Now() - res, err := transport.RoundTrip(req) - if err != nil { - log.Error(err.Error(), "ruid", ruid) - return err - } - - log.Trace("http get response (feed)", "ruid", ruid, "api", endpoint, "topic", topic, "user", user, "code", res.StatusCode, "len", res.ContentLength) - - if res.StatusCode != 200 { - return fmt.Errorf("expected status code %d, got %v (ruid %v)", 200, res.StatusCode, ruid) - } - - defer res.Body.Close() - - rdigest, err := digest(res.Body) - if err != nil { - log.Warn(err.Error(), "ruid", ruid) - return err - } - - if !bytes.Equal(rdigest, original) { - err := fmt.Errorf("downloaded imported file md5=%x is not the same as the generated one=%x", rdigest, original) - log.Warn(err.Error(), "ruid", ruid) - return err - } - - log.Trace("downloaded file matches random file", "ruid", ruid, "len", res.ContentLength) - - return nil -} diff --git a/cmd/swarm/swarm-smoke/main.go b/cmd/swarm/swarm-smoke/main.go index ebd0c9715..559671460 100644 --- a/cmd/swarm/swarm-smoke/main.go +++ b/cmd/swarm/swarm-smoke/main.go @@ -140,19 +140,25 @@ func main() { Name: "upload_and_sync", Aliases: []string{"c"}, Usage: "upload and sync", - Action: cliUploadAndSync, + Action: wrapCliCommand("upload-and-sync", true, uploadAndSync), }, { Name: "feed_sync", Aliases: []string{"f"}, Usage: "feed update generate, upload and sync", - Action: cliFeedUploadAndSync, + Action: wrapCliCommand("feed-and-sync", true, feedUploadAndSync), }, { Name: "upload_speed", Aliases: []string{"u"}, Usage: "measure upload speed", - Action: cliUploadSpeed, + Action: wrapCliCommand("upload-speed", true, uploadSpeed), + }, + { + Name: "sliding_window", + Aliases: []string{"s"}, + Usage: "measure network aggregate capacity", + Action: wrapCliCommand("sliding-window", false, slidingWindow), }, } diff --git a/cmd/swarm/swarm-smoke/sliding_window.go b/cmd/swarm/swarm-smoke/sliding_window.go new file mode 100644 index 000000000..3dd404c50 --- /dev/null +++ b/cmd/swarm/swarm-smoke/sliding_window.go @@ -0,0 +1,122 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package main + +import ( + "crypto/md5" + crand "crypto/rand" + "fmt" + "io" + "math/rand" + "time" + + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" + "github.com/pborman/uuid" + + cli "gopkg.in/urfave/cli.v1" +) + +var seed = time.Now().UTC().UnixNano() + +func init() { + rand.Seed(seed) +} + +type uploadResult struct { + hash string + digest []byte +} + +func slidingWindow(c *cli.Context) error { + defer func(now time.Time) { + totalTime := time.Since(now) + + log.Info("total time", "time", totalTime) + metrics.GetOrRegisterCounter("sliding-window.total-time", nil).Inc(int64(totalTime)) + }(time.Now()) + + generateEndpoints(scheme, cluster, appName, from, to) + hashes := []uploadResult{} //swarm hashes of the uploads + nodes := to - from + const iterationTimeout = 30 * time.Second + log.Info("sliding window test started", "nodes", nodes, "filesize(kb)", filesize, "timeout", timeout) + uploadedBytes := 0 + networkDepth := 0 + errored := false + +outer: + for { + log.Info("uploading to "+endpoints[0]+" and syncing", "seed", seed) + + h := md5.New() + r := io.TeeReader(io.LimitReader(crand.Reader, int64(filesize*1000)), h) + t1 := time.Now() + + hash, err := upload(r, filesize*1000, endpoints[0]) + if err != nil { + log.Error(err.Error()) + return err + } + + metrics.GetOrRegisterResettingTimer("sliding-window.upload-time", nil).UpdateSince(t1) + + fhash := h.Sum(nil) + + log.Info("uploaded successfully", "hash", hash, "digest", fmt.Sprintf("%x", fhash), "sleeping", syncDelay) + hashes = append(hashes, uploadResult{hash: hash, digest: fhash}) + time.Sleep(time.Duration(syncDelay) * time.Second) + uploadedBytes += filesize * 1000 + + for i, v := range hashes { + timeout := time.After(time.Duration(timeout) * time.Second) + errored = false + + inner: + for { + select { + case <-timeout: + errored = true + log.Error("error retrieving hash. timeout", "hash idx", i, "err", err) + metrics.GetOrRegisterCounter("sliding-window.single.error", nil).Inc(1) + break inner + default: + randIndex := 1 + rand.Intn(len(endpoints)-1) + ruid := uuid.New()[:8] + start := time.Now() + err := fetch(v.hash, endpoints[randIndex], v.digest, ruid) + if err != nil { + continue inner + } + metrics.GetOrRegisterResettingTimer("sliding-window.single.fetch-time", nil).UpdateSince(start) + break inner + } + } + + if errored { + break outer + } + networkDepth = i + metrics.GetOrRegisterGauge("sliding-window.network-depth", nil).Update(int64(networkDepth)) + } + } + + log.Info("sliding window test finished", "errored?", errored, "networkDepth", networkDepth, "networkDepth(kb)", networkDepth*filesize) + log.Info("stats", "uploadedFiles", len(hashes), "uploadedKb", uploadedBytes/1000, "filesizeKb", filesize) + + return nil +} diff --git a/cmd/swarm/swarm-smoke/upload_and_sync.go b/cmd/swarm/swarm-smoke/upload_and_sync.go index 0fc86c55d..b0e1f3ee4 100644 --- a/cmd/swarm/swarm-smoke/upload_and_sync.go +++ b/cmd/swarm/swarm-smoke/upload_and_sync.go @@ -17,76 +17,21 @@ package main import ( - "bytes" - "context" "crypto/md5" crand "crypto/rand" - "errors" "fmt" "io" - "io/ioutil" "math/rand" - "net/http" - "net/http/httptrace" - "os" "sync" "time" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/metrics" - "github.com/ethereum/go-ethereum/swarm/api" - "github.com/ethereum/go-ethereum/swarm/api/client" - "github.com/ethereum/go-ethereum/swarm/spancontext" - "github.com/ethereum/go-ethereum/swarm/testutil" - opentracing "github.com/opentracing/opentracing-go" "github.com/pborman/uuid" cli "gopkg.in/urfave/cli.v1" ) -func generateEndpoints(scheme string, cluster string, app string, from int, to int) { - if cluster == "prod" { - for port := from; port < to; port++ { - endpoints = append(endpoints, fmt.Sprintf("%s://%v.swarm-gateways.net", scheme, port)) - } - } else if cluster == "private-internal" { - for port := from; port < to; port++ { - endpoints = append(endpoints, fmt.Sprintf("%s://swarm-private-internal-%v:8500", scheme, port)) - } - } else { - for port := from; port < to; port++ { - endpoints = append(endpoints, fmt.Sprintf("%s://%s-%v-%s.stg.swarm-gateways.net", scheme, app, port, cluster)) - } - } - - if includeLocalhost { - endpoints = append(endpoints, "http://localhost:8500") - } -} - -func cliUploadAndSync(c *cli.Context) error { - log.PrintOrigins(true) - log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(verbosity), log.StreamHandler(os.Stdout, log.TerminalFormat(true)))) - - metrics.GetOrRegisterCounter("upload-and-sync", nil).Inc(1) - - errc := make(chan error) - go func() { - errc <- uploadAndSync(c) - }() - - select { - case err := <-errc: - if err != nil { - metrics.GetOrRegisterCounter("upload-and-sync.fail", nil).Inc(1) - } - return err - case <-time.After(time.Duration(timeout) * time.Second): - metrics.GetOrRegisterCounter("upload-and-sync.timeout", nil).Inc(1) - return fmt.Errorf("timeout after %v sec", timeout) - } -} - func uploadAndSync(c *cli.Context) error { defer func(now time.Time) { totalTime := time.Since(now) @@ -96,23 +41,21 @@ func uploadAndSync(c *cli.Context) error { generateEndpoints(scheme, cluster, appName, from, to) seed := int(time.Now().UnixNano() / 1e6) + log.Info("uploading to "+endpoints[0]+" and syncing", "seed", seed) - randomBytes := testutil.RandomBytes(seed, filesize*1000) + h := md5.New() + r := io.TeeReader(io.LimitReader(crand.Reader, int64(filesize*1000)), h) t1 := time.Now() - hash, err := upload(&randomBytes, endpoints[0]) + hash, err := upload(r, filesize*1000, endpoints[0]) if err != nil { log.Error(err.Error()) return err } metrics.GetOrRegisterResettingTimer("upload-and-sync.upload-time", nil).UpdateSince(t1) - fhash, err := digest(bytes.NewReader(randomBytes)) - if err != nil { - log.Error(err.Error()) - return err - } + fhash := h.Sum(nil) log.Info("uploaded successfully", "hash", hash, "digest", fmt.Sprintf("%x", fhash)) @@ -161,96 +104,3 @@ func uploadAndSync(c *cli.Context) error { return nil } - -// fetch is getting the requested `hash` from the `endpoint` and compares it with the `original` file -func fetch(hash string, endpoint string, original []byte, ruid string) error { - ctx, sp := spancontext.StartSpan(context.Background(), "upload-and-sync.fetch") - defer sp.Finish() - - log.Trace("http get request", "ruid", ruid, "api", endpoint, "hash", hash) - - var tn time.Time - reqUri := endpoint + "/bzz:/" + hash + "/" - req, _ := http.NewRequest("GET", reqUri, nil) - - opentracing.GlobalTracer().Inject( - sp.Context(), - opentracing.HTTPHeaders, - opentracing.HTTPHeadersCarrier(req.Header)) - - trace := client.GetClientTrace("upload-and-sync - http get", "upload-and-sync", ruid, &tn) - - req = req.WithContext(httptrace.WithClientTrace(ctx, trace)) - transport := http.DefaultTransport - - //transport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true} - - tn = time.Now() - res, err := transport.RoundTrip(req) - if err != nil { - log.Error(err.Error(), "ruid", ruid) - return err - } - log.Trace("http get response", "ruid", ruid, "api", endpoint, "hash", hash, "code", res.StatusCode, "len", res.ContentLength) - - if res.StatusCode != 200 { - err := fmt.Errorf("expected status code %d, got %v", 200, res.StatusCode) - log.Warn(err.Error(), "ruid", ruid) - return err - } - - defer res.Body.Close() - - rdigest, err := digest(res.Body) - if err != nil { - log.Warn(err.Error(), "ruid", ruid) - return err - } - - if !bytes.Equal(rdigest, original) { - err := fmt.Errorf("downloaded imported file md5=%x is not the same as the generated one=%x", rdigest, original) - log.Warn(err.Error(), "ruid", ruid) - return err - } - - log.Trace("downloaded file matches random file", "ruid", ruid, "len", res.ContentLength) - - return nil -} - -// upload is uploading a file `f` to `endpoint` via the `swarm up` cmd -func upload(dataBytes *[]byte, endpoint string) (string, error) { - swarm := client.NewClient(endpoint) - f := &client.File{ - ReadCloser: ioutil.NopCloser(bytes.NewReader(*dataBytes)), - ManifestEntry: api.ManifestEntry{ - ContentType: "text/plain", - Mode: 0660, - Size: int64(len(*dataBytes)), - }, - } - - // upload data to bzz:// and retrieve the content-addressed manifest hash, hex-encoded. - return swarm.Upload(f, "", false) -} - -func digest(r io.Reader) ([]byte, error) { - h := md5.New() - _, err := io.Copy(h, r) - if err != nil { - return nil, err - } - return h.Sum(nil), nil -} - -// generates random data in heap buffer -func generateRandomData(datasize int) ([]byte, error) { - b := make([]byte, datasize) - c, err := crand.Read(b) - if err != nil { - return nil, err - } else if c != datasize { - return nil, errors.New("short read") - } - return b, nil -} diff --git a/cmd/swarm/swarm-smoke/upload_speed.go b/cmd/swarm/swarm-smoke/upload_speed.go index 4a355baf8..943c93240 100644 --- a/cmd/swarm/swarm-smoke/upload_speed.go +++ b/cmd/swarm/swarm-smoke/upload_speed.go @@ -17,54 +17,18 @@ package main import ( - "bytes" + "crypto/md5" + crand "crypto/rand" "fmt" - "os" + "io" "time" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/metrics" - "github.com/ethereum/go-ethereum/swarm/testutil" cli "gopkg.in/urfave/cli.v1" ) -var endpoint string - -//just use the first endpoint -func generateEndpoint(scheme string, cluster string, app string, from int) { - if cluster == "prod" { - endpoint = fmt.Sprintf("%s://%v.swarm-gateways.net", scheme, from) - } else if cluster == "private-internal" { - endpoint = fmt.Sprintf("%s://swarm-private-internal-%v:8500", scheme, from) - } else { - endpoint = fmt.Sprintf("%s://%s-%v-%s.stg.swarm-gateways.net", scheme, app, from, cluster) - } -} - -func cliUploadSpeed(c *cli.Context) error { - log.PrintOrigins(true) - log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(verbosity), log.StreamHandler(os.Stdout, log.TerminalFormat(true)))) - - metrics.GetOrRegisterCounter("upload-speed", nil).Inc(1) - - errc := make(chan error) - go func() { - errc <- uploadSpeed(c) - }() - - select { - case err := <-errc: - if err != nil { - metrics.GetOrRegisterCounter("upload-speed.fail", nil).Inc(1) - } - return err - case <-time.After(time.Duration(timeout) * time.Second): - metrics.GetOrRegisterCounter("upload-speed.timeout", nil).Inc(1) - return fmt.Errorf("timeout after %v sec", timeout) - } -} - func uploadSpeed(c *cli.Context) error { defer func(now time.Time) { totalTime := time.Since(now) @@ -73,25 +37,22 @@ func uploadSpeed(c *cli.Context) error { metrics.GetOrRegisterCounter("upload-speed.total-time", nil).Inc(int64(totalTime)) }(time.Now()) - generateEndpoint(scheme, cluster, appName, from) + endpoint := generateEndpoint(scheme, cluster, appName, from) seed := int(time.Now().UnixNano() / 1e6) log.Info("uploading to "+endpoint, "seed", seed) - randomBytes := testutil.RandomBytes(seed, filesize*1000) + h := md5.New() + r := io.TeeReader(io.LimitReader(crand.Reader, int64(filesize*1000)), h) t1 := time.Now() - hash, err := upload(&randomBytes, endpoint) + hash, err := upload(r, filesize*1000, endpoint) if err != nil { log.Error(err.Error()) return err } metrics.GetOrRegisterCounter("upload-speed.upload-time", nil).Inc(int64(time.Since(t1))) - fhash, err := digest(bytes.NewReader(randomBytes)) - if err != nil { - log.Error(err.Error()) - return err - } + fhash := h.Sum(nil) log.Info("uploaded successfully", "hash", hash, "digest", fmt.Sprintf("%x", fhash)) return nil diff --git a/cmd/swarm/swarm-smoke/util.go b/cmd/swarm/swarm-smoke/util.go new file mode 100644 index 000000000..2a3083bf5 --- /dev/null +++ b/cmd/swarm/swarm-smoke/util.go @@ -0,0 +1,267 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package main + +import ( + "bytes" + "context" + "crypto/md5" + crand "crypto/rand" + "errors" + "fmt" + "io" + "io/ioutil" + "net/http" + "net/http/httptrace" + "os" + "time" + + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" + "github.com/ethereum/go-ethereum/swarm/api" + "github.com/ethereum/go-ethereum/swarm/api/client" + "github.com/ethereum/go-ethereum/swarm/spancontext" + opentracing "github.com/opentracing/opentracing-go" + cli "gopkg.in/urfave/cli.v1" +) + +var ( + commandName = "" +) + +func wrapCliCommand(name string, killOnTimeout bool, command func(*cli.Context) error) func(*cli.Context) error { + return func(ctx *cli.Context) error { + log.PrintOrigins(true) + log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(verbosity), log.StreamHandler(os.Stdout, log.TerminalFormat(true)))) + defer func(now time.Time) { + totalTime := time.Since(now) + + log.Info("total time", "time", totalTime) + metrics.GetOrRegisterCounter(name+".total-time", nil).Inc(int64(totalTime)) + }(time.Now()) + + log.Info("smoke test starting", "task", name, "timeout", timeout) + commandName = name + metrics.GetOrRegisterCounter(name, nil).Inc(1) + + errc := make(chan error) + done := make(chan struct{}) + + if killOnTimeout { + go func() { + <-time.After(time.Duration(timeout) * time.Second) + close(done) + }() + } + + go func() { + errc <- command(ctx) + }() + + select { + case err := <-errc: + if err != nil { + metrics.GetOrRegisterCounter(fmt.Sprintf("%s.fail", name), nil).Inc(1) + } + return err + case <-done: + metrics.GetOrRegisterCounter(fmt.Sprintf("%s.timeout", name), nil).Inc(1) + return fmt.Errorf("timeout after %v sec", timeout) + } + } +} + +func generateEndpoints(scheme string, cluster string, app string, from int, to int) { + if cluster == "prod" { + for port := from; port < to; port++ { + endpoints = append(endpoints, fmt.Sprintf("%s://%v.swarm-gateways.net", scheme, port)) + } + } else if cluster == "private-internal" { + for port := from; port < to; port++ { + endpoints = append(endpoints, fmt.Sprintf("%s://swarm-private-internal-%v:8500", scheme, port)) + } + } else { + for port := from; port < to; port++ { + endpoints = append(endpoints, fmt.Sprintf("%s://%s-%v-%s.stg.swarm-gateways.net", scheme, app, port, cluster)) + } + } + + if includeLocalhost { + endpoints = append(endpoints, "http://localhost:8500") + } +} + +//just use the first endpoint +func generateEndpoint(scheme string, cluster string, app string, from int) string { + if cluster == "prod" { + return fmt.Sprintf("%s://%v.swarm-gateways.net", scheme, from) + } else if cluster == "private-internal" { + return fmt.Sprintf("%s://swarm-private-internal-%v:8500", scheme, from) + } else { + return fmt.Sprintf("%s://%s-%v-%s.stg.swarm-gateways.net", scheme, app, from, cluster) + } +} + +func fetchFeed(topic string, user string, endpoint string, original []byte, ruid string) error { + ctx, sp := spancontext.StartSpan(context.Background(), "feed-and-sync.fetch") + defer sp.Finish() + + log.Trace("sleeping", "ruid", ruid) + time.Sleep(3 * time.Second) + + log.Trace("http get request (feed)", "ruid", ruid, "api", endpoint, "topic", topic, "user", user) + + var tn time.Time + reqUri := endpoint + "/bzz-feed:/?topic=" + topic + "&user=" + user + req, _ := http.NewRequest("GET", reqUri, nil) + + opentracing.GlobalTracer().Inject( + sp.Context(), + opentracing.HTTPHeaders, + opentracing.HTTPHeadersCarrier(req.Header)) + + trace := client.GetClientTrace("feed-and-sync - http get", "feed-and-sync", ruid, &tn) + + req = req.WithContext(httptrace.WithClientTrace(ctx, trace)) + transport := http.DefaultTransport + + //transport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true} + + tn = time.Now() + res, err := transport.RoundTrip(req) + if err != nil { + log.Error(err.Error(), "ruid", ruid) + return err + } + + log.Trace("http get response (feed)", "ruid", ruid, "api", endpoint, "topic", topic, "user", user, "code", res.StatusCode, "len", res.ContentLength) + + if res.StatusCode != 200 { + return fmt.Errorf("expected status code %d, got %v (ruid %v)", 200, res.StatusCode, ruid) + } + + defer res.Body.Close() + + rdigest, err := digest(res.Body) + if err != nil { + log.Warn(err.Error(), "ruid", ruid) + return err + } + + if !bytes.Equal(rdigest, original) { + err := fmt.Errorf("downloaded imported file md5=%x is not the same as the generated one=%x", rdigest, original) + log.Warn(err.Error(), "ruid", ruid) + return err + } + + log.Trace("downloaded file matches random file", "ruid", ruid, "len", res.ContentLength) + + return nil +} + +// fetch is getting the requested `hash` from the `endpoint` and compares it with the `original` file +func fetch(hash string, endpoint string, original []byte, ruid string) error { + ctx, sp := spancontext.StartSpan(context.Background(), "upload-and-sync.fetch") + defer sp.Finish() + + log.Trace("http get request", "ruid", ruid, "api", endpoint, "hash", hash) + + var tn time.Time + reqUri := endpoint + "/bzz:/" + hash + "/" + req, _ := http.NewRequest("GET", reqUri, nil) + + opentracing.GlobalTracer().Inject( + sp.Context(), + opentracing.HTTPHeaders, + opentracing.HTTPHeadersCarrier(req.Header)) + + trace := client.GetClientTrace(commandName+" - http get", commandName, ruid, &tn) + + req = req.WithContext(httptrace.WithClientTrace(ctx, trace)) + transport := http.DefaultTransport + + //transport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true} + + tn = time.Now() + res, err := transport.RoundTrip(req) + if err != nil { + log.Error(err.Error(), "ruid", ruid) + return err + } + log.Trace("http get response", "ruid", ruid, "api", endpoint, "hash", hash, "code", res.StatusCode, "len", res.ContentLength) + + if res.StatusCode != 200 { + err := fmt.Errorf("expected status code %d, got %v", 200, res.StatusCode) + log.Warn(err.Error(), "ruid", ruid) + return err + } + + defer res.Body.Close() + + rdigest, err := digest(res.Body) + if err != nil { + log.Warn(err.Error(), "ruid", ruid) + return err + } + + if !bytes.Equal(rdigest, original) { + err := fmt.Errorf("downloaded imported file md5=%x is not the same as the generated one=%x", rdigest, original) + log.Warn(err.Error(), "ruid", ruid) + return err + } + + log.Trace("downloaded file matches random file", "ruid", ruid, "len", res.ContentLength) + + return nil +} + +// upload an arbitrary byte as a plaintext file to `endpoint` using the api client +func upload(r io.Reader, size int, endpoint string) (string, error) { + swarm := client.NewClient(endpoint) + f := &client.File{ + ReadCloser: ioutil.NopCloser(r), + ManifestEntry: api.ManifestEntry{ + ContentType: "text/plain", + Mode: 0660, + Size: int64(size), + }, + } + + // upload data to bzz:// and retrieve the content-addressed manifest hash, hex-encoded. + return swarm.Upload(f, "", false) +} + +func digest(r io.Reader) ([]byte, error) { + h := md5.New() + _, err := io.Copy(h, r) + if err != nil { + return nil, err + } + return h.Sum(nil), nil +} + +// generates random data in heap buffer +func generateRandomData(datasize int) ([]byte, error) { + b := make([]byte, datasize) + c, err := crand.Read(b) + if err != nil { + return nil, err + } else if c != datasize { + return nil, errors.New("short read") + } + return b, nil +}