func main() { flag.Parse() arv, err := arvadosclient.MakeArvadosClient() if err != nil { log.Fatal(err) } kc, err := keepclient.MakeKeepClient(&arv) if err != nil { log.Fatal(err) } kc.Want_replicas = *Replicas kc.Client.Timeout = 10 * time.Minute nextBuf := make(chan []byte, *WriteThreads) nextLocator := make(chan string, *ReadThreads+*WriteThreads) go countBeans(nextLocator) for i := 0; i < *WriteThreads; i++ { go makeBufs(nextBuf, i) go doWrites(kc, nextBuf, nextLocator) } for i := 0; i < *ReadThreads; i++ { go doReads(kc, nextLocator) } <-make(chan struct{}) }
func (s *IntegrationSuite) test100BlockFile(c *check.C, blocksize int) { testdata := make([]byte, blocksize) for i := 0; i < blocksize; i++ { testdata[i] = byte(' ') } arv, err := arvadosclient.MakeArvadosClient() c.Assert(err, check.Equals, nil) arv.ApiToken = arvadostest.ActiveToken kc, err := keepclient.MakeKeepClient(&arv) c.Assert(err, check.Equals, nil) loc, _, err := kc.PutB(testdata[:]) c.Assert(err, check.Equals, nil) mtext := "." for i := 0; i < 100; i++ { mtext = mtext + " " + loc } mtext = mtext + fmt.Sprintf(" 0:%d00:testdata.bin\n", blocksize) coll := map[string]interface{}{} err = arv.Create("collections", map[string]interface{}{ "collection": map[string]interface{}{ "name": fmt.Sprintf("testdata blocksize=%d", blocksize), "manifest_text": mtext, }, }, &coll) c.Assert(err, check.Equals, nil) uuid := coll["uuid"].(string) hdr, body, size := s.runCurl(c, arv.ApiToken, uuid+".collections.example.com", "/testdata.bin") c.Check(hdr, check.Matches, `(?s)HTTP/1.1 200 OK\r\n.*`) c.Check(hdr, check.Matches, `(?si).*Content-length: `+fmt.Sprintf("%d00", blocksize)+`\r\n.*`) c.Check([]byte(body)[:1234], check.DeepEquals, testdata[:1234]) c.Check(size, check.Equals, int64(blocksize)*100) }
// Since keepstore does not come into picture in tests, // we need to explicitly start the goroutine in tests. func RunTestPullWorker(c *C) { arv, err := arvadosclient.MakeArvadosClient() c.Assert(err, Equals, nil) keepClient, err := keepclient.MakeKeepClient(&arv) c.Assert(err, Equals, nil) pullq = NewWorkQueue() go RunPullWorker(pullq, keepClient) }
func (s *IntegrationSuite) SetUpSuite(c *check.C) { arvadostest.StartAPI() arvadostest.StartKeep(2, true) arv, err := arvadosclient.MakeArvadosClient() c.Assert(err, check.Equals, nil) arv.ApiToken = arvadostest.ActiveToken kc, err := keepclient.MakeKeepClient(&arv) c.Assert(err, check.Equals, nil) kc.PutB([]byte("Hello world\n")) kc.PutB([]byte("foo")) kc.PutB([]byte("foobar")) }
// setup keepclient using the config provided func setupKeepClient(config apiConfig, keepServicesJSON string, isDst bool, replications int, srcBlobSignatureTTL time.Duration) (kc *keepclient.KeepClient, blobSignatureTTL time.Duration, err error) { arv := arvadosclient.ArvadosClient{ ApiToken: config.APIToken, ApiServer: config.APIHost, ApiInsecure: config.APIHostInsecure, Client: &http.Client{Transport: &http.Transport{ TLSClientConfig: &tls.Config{InsecureSkipVerify: config.APIHostInsecure}}}, External: config.ExternalClient, } // if keepServicesJSON is provided, use it to load services; else, use DiscoverKeepServers if keepServicesJSON == "" { kc, err = keepclient.MakeKeepClient(&arv) if err != nil { return nil, 0, err } } else { kc = keepclient.New(&arv) err = kc.LoadKeepServicesFromJSON(keepServicesJSON) if err != nil { return kc, 0, err } } if isDst { // Get default replications value from destination, if it is not already provided if replications == 0 { value, err := arv.Discovery("defaultCollectionReplication") if err == nil { replications = int(value.(float64)) } else { return nil, 0, err } } kc.Want_replicas = replications } // If srcBlobSignatureTTL is not provided, get it from API server discovery doc blobSignatureTTL = srcBlobSignatureTTL if !isDst && srcBlobSignatureTTL == 0 { value, err := arv.Discovery("blobSignatureTtl") if err == nil { blobSignatureTTL = time.Duration(int(value.(float64))) * time.Second } else { return nil, 0, err } } return kc, blobSignatureTTL, nil }
func main() { api, err := arvadosclient.MakeArvadosClient() if err != nil { log.Fatal(err) } jobUuid := os.Getenv("JOB_UUID") taskUuid := os.Getenv("TASK_UUID") tmpdir := os.Getenv("TASK_WORK") keepmount := os.Getenv("TASK_KEEPMOUNT") var jobStruct Job var taskStruct Task err = api.Get("jobs", jobUuid, nil, &jobStruct) if err != nil { log.Fatal(err) } err = api.Get("job_tasks", taskUuid, nil, &taskStruct) if err != nil { log.Fatal(err) } var kc IKeepClient kc, err = keepclient.MakeKeepClient(&api) if err != nil { log.Fatal(err) } syscall.Umask(0022) err = runner(api, kc, jobUuid, taskUuid, tmpdir, keepmount, jobStruct, taskStruct) if err == nil { os.Exit(0) } else if _, ok := err.(TempFail); ok { log.Print(err) os.Exit(TASK_TEMPFAIL) } else if _, ok := err.(PermFail); ok { os.Exit(1) } else { log.Fatal(err) } }
// setup keepclient using the config provided func setupKeepClient(config apiConfig, keepServicesJSON string, blobSignatureTTL time.Duration) (kc *keepclient.KeepClient, ttl time.Duration, err error) { arv := arvadosclient.ArvadosClient{ ApiToken: config.APIToken, ApiServer: config.APIHost, ApiInsecure: config.APIHostInsecure, Client: &http.Client{Transport: &http.Transport{ TLSClientConfig: &tls.Config{InsecureSkipVerify: config.APIHostInsecure}}}, External: config.ExternalClient, } // if keepServicesJSON is provided, use it to load services; else, use DiscoverKeepServers if keepServicesJSON == "" { kc, err = keepclient.MakeKeepClient(&arv) if err != nil { return } } else { kc = keepclient.New(&arv) err = kc.LoadKeepServicesFromJSON(keepServicesJSON) if err != nil { return } } // Get if blobSignatureTTL is not provided ttl = blobSignatureTTL if blobSignatureTTL == 0 { value, err := arv.Discovery("blobSignatureTtl") if err == nil { ttl = time.Duration(int(value.(float64))) * time.Second } else { return nil, 0, err } } return }
func main() { api, err := arvadosclient.MakeArvadosClient() if err != nil { log.Fatal(err) } // Container may not have certificates installed, so need to look for // /etc/arvados/ca-certificates.crt in addition to normal system certs. var certFiles = []string{ "/etc/ssl/certs/ca-certificates.crt", // Debian "/etc/pki/tls/certs/ca-bundle.crt", // Red Hat "/etc/arvados/ca-certificates.crt", } certs := x509.NewCertPool() for _, file := range certFiles { data, err := ioutil.ReadFile(file) if err == nil { log.Printf("Using TLS certificates at %v", file) certs.AppendCertsFromPEM(data) } } api.Client.Transport.(*http.Transport).TLSClientConfig.RootCAs = certs jobUuid := os.Getenv("JOB_UUID") taskUuid := os.Getenv("TASK_UUID") tmpdir := os.Getenv("TASK_WORK") keepmount := os.Getenv("TASK_KEEPMOUNT") var jobStruct Job var taskStruct Task err = api.Get("jobs", jobUuid, nil, &jobStruct) if err != nil { log.Fatal(err) } err = api.Get("job_tasks", taskUuid, nil, &taskStruct) if err != nil { log.Fatal(err) } var kc IKeepClient kc, err = keepclient.MakeKeepClient(&api) if err != nil { log.Fatal(err) } syscall.Umask(0022) err = runner(api, kc, jobUuid, taskUuid, tmpdir, keepmount, jobStruct, taskStruct) if err == nil { os.Exit(0) } else if _, ok := err.(TempFail); ok { log.Print(err) os.Exit(TASK_TEMPFAIL) } else if _, ok := err.(PermFail); ok { os.Exit(1) } else { log.Fatal(err) } }
func main() { var ( listen string no_get bool no_put bool default_replicas int timeout int64 pidfile string ) flagset := flag.NewFlagSet("keepproxy", flag.ExitOnError) flagset.StringVar( &listen, "listen", DefaultAddr, "Interface on which to listen for requests, in the format "+ "ipaddr:port. e.g. -listen=10.0.1.24:8000. Use -listen=:port "+ "to listen on all network interfaces.") flagset.BoolVar( &no_get, "no-get", false, "If set, disable GET operations") flagset.BoolVar( &no_put, "no-put", false, "If set, disable PUT operations") flagset.IntVar( &default_replicas, "default-replicas", 2, "Default number of replicas to write if not specified by the client.") flagset.Int64Var( &timeout, "timeout", 15, "Timeout on requests to internal Keep services (default 15 seconds)") flagset.StringVar( &pidfile, "pid", "", "Path to write pid file") flagset.Parse(os.Args[1:]) arv, err := arvadosclient.MakeArvadosClient() if err != nil { log.Fatalf("Error setting up arvados client %s", err.Error()) } if os.Getenv("ARVADOS_DEBUG") != "" { keepclient.DebugPrintf = log.Printf } kc, err := keepclient.MakeKeepClient(&arv) if err != nil { log.Fatalf("Error setting up keep client %s", err.Error()) } if pidfile != "" { f, err := os.Create(pidfile) if err != nil { log.Fatalf("Error writing pid file (%s): %s", pidfile, err.Error()) } fmt.Fprint(f, os.Getpid()) f.Close() defer os.Remove(pidfile) } kc.Want_replicas = default_replicas kc.Client.Timeout = time.Duration(timeout) * time.Second go kc.RefreshServices(5*time.Minute, 3*time.Second) listener, err = net.Listen("tcp", listen) if err != nil { log.Fatalf("Could not listen on %v", listen) } log.Printf("Arvados Keep proxy started listening on %v", listener.Addr()) // Shut down the server gracefully (by closing the listener) // if SIGTERM is received. term := make(chan os.Signal, 1) go func(sig <-chan os.Signal) { s := <-sig log.Println("caught signal:", s) listener.Close() }(term) signal.Notify(term, syscall.SIGTERM) signal.Notify(term, syscall.SIGINT) // Start serving requests. http.Serve(listener, MakeRESTRouter(!no_get, !no_put, kc)) log.Println("shutting down") }
func singlerun(arv arvadosclient.ArvadosClient) error { var err error if isAdmin, err := util.UserIsAdmin(arv); err != nil { return errors.New("Error verifying admin token: " + err.Error()) } else if !isAdmin { return errors.New("Current user is not an admin. Datamanager requires a privileged token.") } if logEventTypePrefix != "" { arvLogger, err = logger.NewLogger(logger.LoggerParams{ Client: arv, EventTypePrefix: logEventTypePrefix, WriteInterval: time.Second * time.Duration(logFrequencySeconds)}) } loggerutil.LogRunInfo(arvLogger) if arvLogger != nil { arvLogger.AddWriteHook(loggerutil.LogMemoryAlloc) } var ( dataFetcher summary.DataFetcher readCollections collection.ReadCollections keepServerInfo keep.ReadServers ) if summary.ShouldReadData() { dataFetcher = summary.ReadData } else { dataFetcher = BuildDataFetcher(arv) } err = dataFetcher(arvLogger, &readCollections, &keepServerInfo) if err != nil { return err } err = summary.MaybeWriteData(arvLogger, readCollections, keepServerInfo) if err != nil { return err } buckets := summary.BucketReplication(readCollections, keepServerInfo) bucketCounts := buckets.Counts() replicationSummary := buckets.SummarizeBuckets(readCollections) replicationCounts := replicationSummary.ComputeCounts() log.Printf("Blocks In Collections: %d, "+ "\nBlocks In Keep: %d.", len(readCollections.BlockToDesiredReplication), len(keepServerInfo.BlockToServers)) log.Println(replicationCounts.PrettyPrint()) log.Printf("Blocks Histogram:") for _, rlbss := range bucketCounts { log.Printf("%+v: %10d", rlbss.Levels, rlbss.Count) } kc, err := keepclient.MakeKeepClient(&arv) if err != nil { return fmt.Errorf("Error setting up keep client %v", err.Error()) } // Log that we're finished. We force the recording, since go will // not wait for the write timer before exiting. if arvLogger != nil { defer arvLogger.FinalUpdate(func(p map[string]interface{}, e map[string]interface{}) { summaryInfo := logger.GetOrCreateMap(p, "summary_info") summaryInfo["block_replication_counts"] = bucketCounts summaryInfo["replication_summary"] = replicationCounts p["summary_info"] = summaryInfo p["run_info"].(map[string]interface{})["finished_at"] = time.Now() }) } pullServers := summary.ComputePullServers(kc, &keepServerInfo, readCollections.BlockToDesiredReplication, replicationSummary.UnderReplicatedBlocks) pullLists := summary.BuildPullLists(pullServers) trashLists, trashErr := summary.BuildTrashLists(kc, &keepServerInfo, replicationSummary.KeepBlocksNotInCollections) err = summary.WritePullLists(arvLogger, pullLists, dryRun) if err != nil { return err } if trashErr != nil { return err } keep.SendTrashLists(arvLogger, kc, trashLists, dryRun) return nil }
func (h *handler) ServeHTTP(wOrig http.ResponseWriter, r *http.Request) { var statusCode = 0 var statusText string remoteAddr := r.RemoteAddr if xff := r.Header.Get("X-Forwarded-For"); xff != "" { remoteAddr = xff + "," + remoteAddr } w := httpserver.WrapResponseWriter(wOrig) defer func() { if statusCode == 0 { statusCode = w.WroteStatus() } else if w.WroteStatus() == 0 { w.WriteHeader(statusCode) } else if w.WroteStatus() != statusCode { httpserver.Log(r.RemoteAddr, "WARNING", fmt.Sprintf("Our status changed from %d to %d after we sent headers", w.WroteStatus(), statusCode)) } if statusText == "" { statusText = http.StatusText(statusCode) } httpserver.Log(remoteAddr, statusCode, statusText, w.WroteBodyBytes(), r.Method, r.Host, r.URL.Path, r.URL.RawQuery) }() if r.Method != "GET" && r.Method != "POST" { statusCode, statusText = http.StatusMethodNotAllowed, r.Method return } if r.Header.Get("Origin") != "" { // Allow simple cross-origin requests without user // credentials ("user credentials" as defined by CORS, // i.e., cookies, HTTP authentication, and client-side // SSL certificates. See // http://www.w3.org/TR/cors/#user-credentials). w.Header().Set("Access-Control-Allow-Origin", "*") } arv := clientPool.Get() if arv == nil { statusCode, statusText = http.StatusInternalServerError, "Pool failed: "+clientPool.Err().Error() return } defer clientPool.Put(arv) pathParts := strings.Split(r.URL.Path[1:], "/") var targetID string var targetPath []string var tokens []string var reqTokens []string var pathToken bool var attachment bool credentialsOK := trustAllContent if r.Host != "" && r.Host == attachmentOnlyHost { credentialsOK = true attachment = true } else if r.FormValue("disposition") == "attachment" { attachment = true } if targetID = parseCollectionIDFromDNSName(r.Host); targetID != "" { // http://ID.collections.example/PATH... credentialsOK = true targetPath = pathParts } else if len(pathParts) >= 2 && strings.HasPrefix(pathParts[0], "c=") { // /c=ID/PATH... targetID = parseCollectionIDFromURL(pathParts[0][2:]) targetPath = pathParts[1:] } else if len(pathParts) >= 3 && pathParts[0] == "collections" { if len(pathParts) >= 5 && pathParts[1] == "download" { // /collections/download/ID/TOKEN/PATH... targetID = pathParts[2] tokens = []string{pathParts[3]} targetPath = pathParts[4:] pathToken = true } else { // /collections/ID/PATH... targetID = pathParts[1] tokens = anonymousTokens targetPath = pathParts[2:] } } else { statusCode = http.StatusNotFound return } formToken := r.FormValue("api_token") if formToken != "" && r.Header.Get("Origin") != "" && attachment && r.URL.Query().Get("api_token") == "" { // The client provided an explicit token in the POST // body. The Origin header indicates this *might* be // an AJAX request, in which case redirect-with-cookie // won't work: we should just serve the content in the // POST response. This is safe because: // // * We're supplying an attachment, not inline // content, so we don't need to convert the POST to // a GET and avoid the "really resubmit form?" // problem. // // * The token isn't embedded in the URL, so we don't // need to worry about bookmarks and copy/paste. tokens = append(tokens, formToken) } else if formToken != "" { // The client provided an explicit token in the query // string, or a form in POST body. We must put the // token in an HttpOnly cookie, and redirect to the // same URL with the query param redacted and method = // GET. if !credentialsOK { // It is not safe to copy the provided token // into a cookie unless the current vhost // (origin) serves only a single collection or // we are in trustAllContent mode. statusCode = http.StatusBadRequest return } // The HttpOnly flag is necessary to prevent // JavaScript code (included in, or loaded by, a page // in the collection being served) from employing the // user's token beyond reading other files in the same // domain, i.e., same collection. // // The 303 redirect is necessary in the case of a GET // request to avoid exposing the token in the Location // bar, and in the case of a POST request to avoid // raising warnings when the user refreshes the // resulting page. http.SetCookie(w, &http.Cookie{ Name: "arvados_api_token", Value: auth.EncodeTokenCookie([]byte(formToken)), Path: "/", HttpOnly: true, }) // Propagate query parameters (except api_token) from // the original request. redirQuery := r.URL.Query() redirQuery.Del("api_token") redir := (&url.URL{ Host: r.Host, Path: r.URL.Path, RawQuery: redirQuery.Encode(), }).String() w.Header().Add("Location", redir) statusCode, statusText = http.StatusSeeOther, redir w.WriteHeader(statusCode) io.WriteString(w, `<A href="`) io.WriteString(w, html.EscapeString(redir)) io.WriteString(w, `">Continue</A>`) return } if tokens == nil && strings.HasPrefix(targetPath[0], "t=") { // http://ID.example/t=TOKEN/PATH... // /c=ID/t=TOKEN/PATH... // // This form must only be used to pass scoped tokens // that give permission for a single collection. See // FormValue case above. tokens = []string{targetPath[0][2:]} pathToken = true targetPath = targetPath[1:] } if tokens == nil { if credentialsOK { reqTokens = auth.NewCredentialsFromHTTPRequest(r).Tokens } tokens = append(reqTokens, anonymousTokens...) } if len(targetPath) > 0 && targetPath[0] == "_" { // If a collection has a directory called "t=foo" or // "_", it can be served at // //collections.example/_/t=foo/ or // //collections.example/_/_/ respectively: // //collections.example/t=foo/ won't work because // t=foo will be interpreted as a token "foo". targetPath = targetPath[1:] } tokenResult := make(map[string]int) collection := make(map[string]interface{}) found := false for _, arv.ApiToken = range tokens { err := arv.Get("collections", targetID, nil, &collection) if err == nil { // Success found = true break } if srvErr, ok := err.(arvadosclient.APIServerError); ok { switch srvErr.HttpStatusCode { case 404, 401: // Token broken or insufficient to // retrieve collection tokenResult[arv.ApiToken] = srvErr.HttpStatusCode continue } } // Something more serious is wrong statusCode, statusText = http.StatusInternalServerError, err.Error() return } if !found { if pathToken || !credentialsOK { // Either the URL is a "secret sharing link" // that didn't work out (and asking the client // for additional credentials would just be // confusing), or we don't even accept // credentials at this path. statusCode = http.StatusNotFound return } for _, t := range reqTokens { if tokenResult[t] == 404 { // The client provided valid token(s), but the // collection was not found. statusCode = http.StatusNotFound return } } // The client's token was invalid (e.g., expired), or // the client didn't even provide one. Propagate the // 401 to encourage the client to use a [different] // token. // // TODO(TC): This response would be confusing to // someone trying (anonymously) to download public // data that has been deleted. Allow a referrer to // provide this context somehow? w.Header().Add("WWW-Authenticate", "Basic realm=\"collections\"") statusCode = http.StatusUnauthorized return } filename := strings.Join(targetPath, "/") kc, err := keepclient.MakeKeepClient(arv) if err != nil { statusCode, statusText = http.StatusInternalServerError, err.Error() return } if kc.Client != nil && kc.Client.Transport != nil { // Workaround for https://dev.arvados.org/issues/9005 if t, ok := kc.Client.Transport.(*http.Transport); ok { defer t.CloseIdleConnections() } } rdr, err := kc.CollectionFileReader(collection, filename) if os.IsNotExist(err) { statusCode = http.StatusNotFound return } else if err != nil { statusCode, statusText = http.StatusBadGateway, err.Error() return } defer rdr.Close() basenamePos := strings.LastIndex(filename, "/") if basenamePos < 0 { basenamePos = 0 } extPos := strings.LastIndex(filename, ".") if extPos > basenamePos { // Now extPos is safely >= 0. if t := mime.TypeByExtension(filename[extPos:]); t != "" { w.Header().Set("Content-Type", t) } } if rdr, ok := rdr.(keepclient.ReadCloserWithLen); ok { w.Header().Set("Content-Length", fmt.Sprintf("%d", rdr.Len())) } applyContentDispositionHdr(w, r, filename[basenamePos:], attachment) rangeRdr, statusCode := applyRangeHdr(w, r, rdr) w.WriteHeader(statusCode) _, err = io.Copy(w, rangeRdr) if err != nil { statusCode, statusText = http.StatusBadGateway, err.Error() } }
func (s *ServerRequiredSuite) TestPutAskGet(c *C) { log.Print("TestPutAndGet start") os.Args = []string{"keepproxy", "-listen=:29950"} listener = nil go main() time.Sleep(100 * time.Millisecond) setupProxyService() os.Setenv("ARVADOS_EXTERNAL_CLIENT", "true") arv, err := arvadosclient.MakeArvadosClient() c.Assert(err, Equals, nil) kc, err := keepclient.MakeKeepClient(&arv) c.Assert(err, Equals, nil) c.Check(kc.Arvados.External, Equals, true) c.Check(kc.Using_proxy, Equals, true) c.Check(len(kc.LocalRoots()), Equals, 1) for _, root := range kc.LocalRoots() { c.Check(root, Equals, "http://localhost:29950") } os.Setenv("ARVADOS_EXTERNAL_CLIENT", "") waitForListener() defer closeListener() hash := fmt.Sprintf("%x", md5.Sum([]byte("foo"))) var hash2 string { _, _, err := kc.Ask(hash) c.Check(err, Equals, keepclient.BlockNotFound) log.Print("Finished Ask (expected BlockNotFound)") } { reader, _, _, err := kc.Get(hash) c.Check(reader, Equals, nil) c.Check(err, Equals, keepclient.BlockNotFound) log.Print("Finished Get (expected BlockNotFound)") } // Note in bug #5309 among other errors keepproxy would set // Content-Length incorrectly on the 404 BlockNotFound response, this // would result in a protocol violation that would prevent reuse of the // connection, which would manifest by the next attempt to use the // connection (in this case the PutB below) failing. So to test for // that bug it's necessary to trigger an error response (such as // BlockNotFound) and then do something else with the same httpClient // connection. { var rep int var err error hash2, rep, err = kc.PutB([]byte("foo")) c.Check(hash2, Matches, fmt.Sprintf(`^%s\+3(\+.+)?$`, hash)) c.Check(rep, Equals, 2) c.Check(err, Equals, nil) log.Print("Finished PutB (expected success)") } { blocklen, _, err := kc.Ask(hash2) c.Assert(err, Equals, nil) c.Check(blocklen, Equals, int64(3)) log.Print("Finished Ask (expected success)") } { reader, blocklen, _, err := kc.Get(hash2) c.Assert(err, Equals, nil) all, err := ioutil.ReadAll(reader) c.Check(all, DeepEquals, []byte("foo")) c.Check(blocklen, Equals, int64(3)) log.Print("Finished Get (expected success)") } { var rep int var err error hash2, rep, err = kc.PutB([]byte("")) c.Check(hash2, Matches, `^d41d8cd98f00b204e9800998ecf8427e\+0(\+.+)?$`) c.Check(rep, Equals, 2) c.Check(err, Equals, nil) log.Print("Finished PutB zero block") } { reader, blocklen, _, err := kc.Get("d41d8cd98f00b204e9800998ecf8427e") c.Assert(err, Equals, nil) all, err := ioutil.ReadAll(reader) c.Check(all, DeepEquals, []byte("")) c.Check(blocklen, Equals, int64(0)) log.Print("Finished Get zero block") } log.Print("TestPutAndGet done") }