path: root/cmd/swarm/swarm-smoke/util.go

// 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 <http://www.gnu.org/licenses/>.

package main

import (
    "bytes"
    "context"
    "crypto/md5"
    crand "crypto/rand"
    "errors"
    "fmt"
    "io"
    "io/ioutil"
    "math/rand"
    "net/http"
    "net/http/httptrace"
    "os"
    "strings"
    "time"

    "github.com/dexon-foundation/dexon/log"
    "github.com/dexon-foundation/dexon/metrics"
    "github.com/dexon-foundation/dexon/swarm/api"
    "github.com/dexon-foundation/dexon/swarm/api/client"
    "github.com/dexon-foundation/dexon/swarm/spancontext"
    opentracing "github.com/opentracing/opentracing-go"
    "github.com/pborman/uuid"
    cli "gopkg.in/urfave/cli.v1"
)

var (
    commandName = ""
    seed        = int(time.Now().UTC().UnixNano())
)

func init() {
    rand.Seed(int64(seed))
}

func httpEndpoint(host string) string {
    return fmt.Sprintf("http://%s:%d", host, httpPort)
}

func wsEndpoint(host string) string {
    return fmt.Sprintf("ws://%s:%d", host, wsPort)
}

func wrapCliCommand(name string, command func(*cli.Context, string) 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(false))))

        // test uuid
        tuid := uuid.New()[:8]

        commandName = name

        hosts = strings.Split(allhosts, ",")

        defer func(now time.Time) {
            totalTime := time.Since(now)
            log.Info("total time", "tuid", tuid, "time", totalTime, "kb", filesize)
            metrics.GetOrRegisterResettingTimer(name+".total-time", nil).Update(totalTime)
        }(time.Now())

        log.Info("smoke test starting", "tuid", tuid, "task", name, "timeout", timeout)
        metrics.GetOrRegisterCounter(name, nil).Inc(1)

        return command(ctx, tuid)
    }
}

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, tuid string) error {
    ctx, sp := spancontext.StartSpan(context.Background(), "upload-and-sync.fetch")
    defer sp.Finish()

    log.Info("http get request", "tuid", tuid, "ruid", ruid, "endpoint", 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.Info("http get response", "tuid", tuid, "ruid", ruid, "endpoint", 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(data []byte, endpoint string) (string, error) {
    swarm := client.NewClient(endpoint)
    f := &client.File{
        ReadCloser: ioutil.NopCloser(bytes.NewReader(data)),
        ManifestEntry: api.ManifestEntry{
            ContentType: "text/plain",
            Mode:        0660,
            Size:        int64(len(data)),
        },
    }

    // 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
}