X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/a04ea95e79c60ed2a54eaec5b5c2e235fe39ef9a..1f2a1c4d4e12109291578a70e1a1316960343eeb:/services/keepproxy/keepproxy.go diff --git a/services/keepproxy/keepproxy.go b/services/keepproxy/keepproxy.go index b8c30d113e..d0af4a58ea 100644 --- a/services/keepproxy/keepproxy.go +++ b/services/keepproxy/keepproxy.go @@ -1,6 +1,7 @@ package main import ( + "errors" "flag" "fmt" "git.curoverse.com/arvados.git/sdk/go/arvadosclient" @@ -13,6 +14,8 @@ import ( "net/http" "os" "os/signal" + "reflect" + "regexp" "sync" "syscall" "time" @@ -105,7 +108,7 @@ func main() { log.Fatalf("Could not listen on %v", listen) } - go RefreshServicesList(&kc) + go RefreshServicesList(kc) // Shut down the server gracefully (by closing the listener) // if SIGTERM is received. @@ -118,10 +121,10 @@ func main() { signal.Notify(term, syscall.SIGTERM) signal.Notify(term, syscall.SIGINT) - log.Printf("Arvados Keep proxy started listening on %v with server list %v", listener.Addr(), kc.ServiceRoots()) + log.Printf("Arvados Keep proxy started listening on %v", listener.Addr()) // Start listening for requests. - http.Serve(listener, MakeRESTRouter(!no_get, !no_put, &kc)) + http.Serve(listener, MakeRESTRouter(!no_get, !no_put, kc)) log.Println("shutting down") } @@ -134,16 +137,25 @@ type ApiTokenCache struct { // Refresh the keep service list every five minutes. func RefreshServicesList(kc *keepclient.KeepClient) { + var previousRoots = []map[string]string{} + var delay time.Duration = 0 for { - time.Sleep(300 * time.Second) - oldservices := kc.ServiceRoots() - kc.DiscoverKeepServers() - newservices := kc.ServiceRoots() - s1 := fmt.Sprint(oldservices) - s2 := fmt.Sprint(newservices) - if s1 != s2 { - log.Printf("Updated server list to %v", s2) + time.Sleep(delay * time.Second) + delay = 300 + if err := kc.DiscoverKeepServers(); err != nil { + log.Println("Error retrieving services list:", err) + delay = 3 + continue } + newRoots := []map[string]string{kc.LocalRoots(), kc.GatewayRoots()} + if !reflect.DeepEqual(previousRoots, newRoots) { + log.Printf("Updated services list: locals %v gateways %v", newRoots[0], newRoots[1]) + } + if len(newRoots[0]) == 0 { + log.Print("WARNING: No local services. Retrying in 3 seconds.") + delay = 3 + } + previousRoots = newRoots } } @@ -247,14 +259,14 @@ func MakeRESTRouter( rest := mux.NewRouter() if enable_get { - rest.Handle(`/{hash:[0-9a-f]{32}}+{hints}`, + rest.Handle(`/{locator:[0-9a-f]{32}\+.*}`, GetBlockHandler{kc, t}).Methods("GET", "HEAD") - rest.Handle(`/{hash:[0-9a-f]{32}}`, GetBlockHandler{kc, t}).Methods("GET", "HEAD") + rest.Handle(`/{locator:[0-9a-f]{32}}`, GetBlockHandler{kc, t}).Methods("GET", "HEAD") } if enable_put { - rest.Handle(`/{hash:[0-9a-f]{32}}+{hints}`, PutBlockHandler{kc, t}).Methods("PUT") - rest.Handle(`/{hash:[0-9a-f]{32}}`, PutBlockHandler{kc, t}).Methods("PUT") + rest.Handle(`/{locator:[0-9a-f]{32}\+.*}`, PutBlockHandler{kc, t}).Methods("PUT") + rest.Handle(`/{locator:[0-9a-f]{32}}`, PutBlockHandler{kc, t}).Methods("PUT") rest.Handle(`/`, PutBlockHandler{kc, t}).Methods("POST") rest.Handle(`/{any}`, OptionsHandler{}).Methods("OPTIONS") rest.Handle(`/`, OptionsHandler{}).Methods("OPTIONS") @@ -282,22 +294,34 @@ func (this OptionsHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request SetCorsHeaders(resp) } -func (this GetBlockHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request) { - SetCorsHeaders(resp) +var BadAuthorizationHeader = errors.New("Missing or invalid Authorization header") +var ContentLengthMismatch = errors.New("Actual length != expected content length") +var MethodNotSupported = errors.New("Method not supported") - kc := *this.KeepClient +var removeHint, _ = regexp.Compile("\\+K@[a-z0-9]{5}(\\+|$)") - hash := mux.Vars(req)["hash"] - hints := mux.Vars(req)["hints"] +func (this GetBlockHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request) { + SetCorsHeaders(resp) - locator := keepclient.MakeLocator2(hash, hints) + locator := mux.Vars(req)["locator"] + var err error + var status int + var expectLength, responseLength int64 + var proxiedURI = "-" + + defer func() { + log.Println(GetRemoteAddress(req), req.Method, req.URL.Path, status, expectLength, responseLength, proxiedURI, err) + if status != http.StatusOK { + http.Error(resp, err.Error(), status) + } + }() - log.Printf("%s: %s %s begin", GetRemoteAddress(req), req.Method, hash) + kc := *this.KeepClient var pass bool var tok string if pass, tok = CheckAuthorizationHeader(kc, this.ApiTokenCache, req); !pass { - http.Error(resp, "Missing or invalid Authorization header", http.StatusForbidden) + status, err = http.StatusForbidden, BadAuthorizationHeader return } @@ -307,92 +331,99 @@ func (this GetBlockHandler) ServeHTTP(resp http.ResponseWriter, req *http.Reques kc.Arvados = &arvclient var reader io.ReadCloser - var err error - var blocklen int64 - if req.Method == "GET" { - reader, blocklen, _, err = kc.AuthorizedGet(hash, locator.Signature, locator.Timestamp) + locator = removeHint.ReplaceAllString(locator, "$1") + + switch req.Method { + case "HEAD": + expectLength, proxiedURI, err = kc.Ask(locator) + case "GET": + reader, expectLength, proxiedURI, err = kc.Get(locator) if reader != nil { defer reader.Close() } - } else if req.Method == "HEAD" { - blocklen, _, err = kc.AuthorizedAsk(hash, locator.Signature, locator.Timestamp) + default: + status, err = http.StatusNotImplemented, MethodNotSupported + return } - if blocklen == -1 { - log.Printf("%s: %s %s Keep server did not return Content-Length", - GetRemoteAddress(req), req.Method, hash) + if expectLength == -1 { + log.Println("Warning:", GetRemoteAddress(req), req.Method, proxiedURI, "Content-Length not provided") } - var status = 0 switch err { case nil: status = http.StatusOK - resp.Header().Set("Content-Length", fmt.Sprint(blocklen)) - if reader != nil { - n, err2 := io.Copy(resp, reader) - if blocklen > -1 && n != blocklen { - log.Printf("%s: %s %s %v %v mismatched copy size expected Content-Length: %v", - GetRemoteAddress(req), req.Method, hash, status, n, blocklen) - } else if err2 == nil { - log.Printf("%s: %s %s %v %v", - GetRemoteAddress(req), req.Method, hash, status, n) - } else { - log.Printf("%s: %s %s %v %v copy error: %v", - GetRemoteAddress(req), req.Method, hash, status, n, err2.Error()) + resp.Header().Set("Content-Length", fmt.Sprint(expectLength)) + switch req.Method { + case "HEAD": + responseLength = 0 + case "GET": + responseLength, err = io.Copy(resp, reader) + if err == nil && expectLength > -1 && responseLength != expectLength { + err = ContentLengthMismatch } - } else { - log.Printf("%s: %s %s %v 0", GetRemoteAddress(req), req.Method, hash, status) } case keepclient.BlockNotFound: status = http.StatusNotFound - http.Error(resp, "Not Found", http.StatusNotFound) default: status = http.StatusBadGateway - http.Error(resp, err.Error(), http.StatusBadGateway) - } - - if err != nil { - log.Printf("%s: %s %s %v error: %v", - GetRemoteAddress(req), req.Method, hash, status, err.Error()) } } +var LengthRequiredError = errors.New(http.StatusText(http.StatusLengthRequired)) +var LengthMismatchError = errors.New("Locator size hint does not match Content-Length header") + func (this PutBlockHandler) ServeHTTP(resp http.ResponseWriter, req *http.Request) { SetCorsHeaders(resp) kc := *this.KeepClient + var err error + var expectLength int64 = -1 + var status = http.StatusInternalServerError + var wroteReplicas int + var locatorOut string = "-" + + defer func() { + log.Println(GetRemoteAddress(req), req.Method, req.URL.Path, status, expectLength, kc.Want_replicas, wroteReplicas, locatorOut, err) + if status != http.StatusOK { + http.Error(resp, err.Error(), status) + } + }() - hash := mux.Vars(req)["hash"] - hints := mux.Vars(req)["hints"] - - locator := keepclient.MakeLocator2(hash, hints) + locatorIn := mux.Vars(req)["locator"] - var contentLength int64 = -1 if req.Header.Get("Content-Length") != "" { - _, err := fmt.Sscanf(req.Header.Get("Content-Length"), "%d", &contentLength) + _, err := fmt.Sscanf(req.Header.Get("Content-Length"), "%d", &expectLength) if err != nil { - resp.Header().Set("Content-Length", fmt.Sprintf("%d", contentLength)) + resp.Header().Set("Content-Length", fmt.Sprintf("%d", expectLength)) } } - log.Printf("%s: %s %s Content-Length %v", GetRemoteAddress(req), req.Method, hash, contentLength) - - if contentLength < 0 { - http.Error(resp, "Must include Content-Length header", http.StatusLengthRequired) + if expectLength < 0 { + err = LengthRequiredError + status = http.StatusLengthRequired return } - if locator.Size > 0 && int64(locator.Size) != contentLength { - http.Error(resp, "Locator size hint does not match Content-Length header", http.StatusBadRequest) - return + if locatorIn != "" { + var loc *keepclient.Locator + if loc, err = keepclient.MakeLocator(locatorIn); err != nil { + status = http.StatusBadRequest + return + } else if loc.Size > 0 && int64(loc.Size) != expectLength { + err = LengthMismatchError + status = http.StatusBadRequest + return + } } var pass bool var tok string if pass, tok = CheckAuthorizationHeader(kc, this.ApiTokenCache, req); !pass { - http.Error(resp, "Missing or invalid Authorization header", http.StatusForbidden) + err = BadAuthorizationHeader + status = http.StatusForbidden return } @@ -411,57 +442,42 @@ func (this PutBlockHandler) ServeHTTP(resp http.ResponseWriter, req *http.Reques } // Now try to put the block through - var replicas int - var put_err error - if hash == "" { + if locatorIn == "" { if bytes, err := ioutil.ReadAll(req.Body); err != nil { - msg := fmt.Sprintf("Error reading request body: %s", err) - log.Printf(msg) - http.Error(resp, msg, http.StatusInternalServerError) + err = errors.New(fmt.Sprintf("Error reading request body: %s", err)) + status = http.StatusInternalServerError return } else { - hash, replicas, put_err = kc.PutB(bytes) + locatorOut, wroteReplicas, err = kc.PutB(bytes) } } else { - hash, replicas, put_err = kc.PutHR(hash, req.Body, contentLength) + locatorOut, wroteReplicas, err = kc.PutHR(locatorIn, req.Body, expectLength) } // Tell the client how many successful PUTs we accomplished - resp.Header().Set(keepclient.X_Keep_Replicas_Stored, fmt.Sprintf("%d", replicas)) + resp.Header().Set(keepclient.X_Keep_Replicas_Stored, fmt.Sprintf("%d", wroteReplicas)) - switch put_err { + switch err { case nil: - // Default will return http.StatusOK - log.Printf("%s: %s %s finished, stored %v replicas (desired %v)", GetRemoteAddress(req), req.Method, hash, replicas, kc.Want_replicas) - n, err2 := io.WriteString(resp, hash) - if err2 != nil { - log.Printf("%s: wrote %v bytes to response body and got error %v", n, err2.Error()) - } + status = http.StatusOK + _, err = io.WriteString(resp, locatorOut) case keepclient.OversizeBlockError: // Too much data - http.Error(resp, fmt.Sprintf("Exceeded maximum blocksize %d", keepclient.BLOCKSIZE), http.StatusRequestEntityTooLarge) + status = http.StatusRequestEntityTooLarge case keepclient.InsufficientReplicasError: - if replicas > 0 { + if wroteReplicas > 0 { // At least one write is considered success. The // client can decide if getting less than the number of // replications it asked for is a fatal error. - // Default will return http.StatusOK - n, err2 := io.WriteString(resp, hash) - if err2 != nil { - log.Printf("%s: wrote %v bytes to response body and got error %v", n, err2.Error()) - } + status = http.StatusOK + _, err = io.WriteString(resp, locatorOut) } else { - http.Error(resp, put_err.Error(), http.StatusServiceUnavailable) + status = http.StatusServiceUnavailable } default: - http.Error(resp, put_err.Error(), http.StatusBadGateway) - } - - if put_err != nil { - log.Printf("%s: %s %s stored %v replicas (desired %v) got error %v", GetRemoteAddress(req), req.Method, hash, replicas, kc.Want_replicas, put_err.Error()) + status = http.StatusBadGateway } - }