change Read* calls over net/http to move to http.MethodGet (#20173)

- ReadVersion
- ReadFile
- ReadXL

Further changes include to

- Compact internode resource RPC paths
- Compact internode query params

To optimize on parsing by gorilla/mux as the
length of this string increases latency in
gorilla/mux - reduce to a meaningful string.

cmd/storage-rest-client.go

@@ -173,14 +173,28 @@ func (client *storageRESTClient) GetDiskLoc() (poolIdx, setIdx, diskIdx int) {
 	return client.endpoint.PoolIdx, client.endpoint.SetIdx, client.endpoint.DiskIdx
 }
 
-// Wrapper to restClient.Call to handle network errors, in case of network error the connection is disconnected
+// Wrapper to restClient.CallWithMethod to handle network errors, in case of network error the connection is disconnected
 // and a healthcheck routine gets invoked that would reconnect.
-func (client *storageRESTClient) call(ctx context.Context, method string, values url.Values, body io.Reader, length int64) (io.ReadCloser, error) {
+func (client *storageRESTClient) callGet(ctx context.Context, rpcMethod string, values url.Values, body io.Reader, length int64) (io.ReadCloser, error) {
 	if values == nil {
 		values = make(url.Values)
 	}
 	values.Set(storageRESTDiskID, *client.diskID.Load())
-	respBody, err := client.restClient.Call(ctx, method, values, body, length)
+	respBody, err := client.restClient.CallWithHTTPMethod(ctx, http.MethodGet, rpcMethod, values, body, length)
+	if err != nil {
+		return nil, toStorageErr(err)
+	}
+	return respBody, nil
+}
+
+// Wrapper to restClient.Call to handle network errors, in case of network error the connection is disconnected
+// and a healthcheck routine gets invoked that would reconnect.
+func (client *storageRESTClient) call(ctx context.Context, rpcMethod string, values url.Values, body io.Reader, length int64) (io.ReadCloser, error) {
+	if values == nil {
+		values = make(url.Values)
+	}
+	values.Set(storageRESTDiskID, *client.diskID.Load())
+	respBody, err := client.restClient.CallWithHTTPMethod(ctx, http.MethodPost, rpcMethod, values, body, length)
 	if err != nil {
 		return nil, toStorageErr(err)
 	}
@@ -526,7 +540,6 @@ func (client *storageRESTClient) ReadVersion(ctx context.Context, origvolume, vo
 			storageRESTFilePath:         path,
 			storageRESTVersionID:        versionID,
 			storageRESTInclFreeVersions: strconv.FormatBool(opts.InclFreeVersions),
-			storageRESTReadData:         strconv.FormatBool(opts.ReadData),
 			storageRESTHealing:          strconv.FormatBool(opts.Healing),
 		}))
 		if err != nil {
@@ -541,10 +554,9 @@ func (client *storageRESTClient) ReadVersion(ctx context.Context, origvolume, vo
 	values.Set(storageRESTFilePath, path)
 	values.Set(storageRESTVersionID, versionID)
 	values.Set(storageRESTInclFreeVersions, strconv.FormatBool(opts.InclFreeVersions))
-	values.Set(storageRESTReadData, strconv.FormatBool(opts.ReadData))
 	values.Set(storageRESTHealing, strconv.FormatBool(opts.Healing))
 
-	respBody, err := client.call(ctx, storageRESTMethodReadVersion, values, nil, -1)
+	respBody, err := client.callGet(ctx, storageRESTMethodReadVersion, values, nil, -1)
 	if err != nil {
 		return fi, err
 	}
@@ -568,7 +580,6 @@ func (client *storageRESTClient) ReadXL(ctx context.Context, volume string, path
 			storageRESTDiskID:   *client.diskID.Load(),
 			storageRESTVolume:   volume,
 			storageRESTFilePath: path,
-			storageRESTReadData: "false",
 		}))
 		if err != nil {
 			return rf, toStorageErr(err)
@@ -579,8 +590,8 @@ func (client *storageRESTClient) ReadXL(ctx context.Context, volume string, path
 	values := make(url.Values)
 	values.Set(storageRESTVolume, volume)
 	values.Set(storageRESTFilePath, path)
-	values.Set(storageRESTReadData, strconv.FormatBool(readData))
+
-	respBody, err := client.call(ctx, storageRESTMethodReadXL, values, nil, -1)
+	respBody, err := client.callGet(ctx, storageRESTMethodReadXL, values, nil, -1)
 	if err != nil {
 		return rf, toStorageErr(err)
 	}
@@ -617,9 +628,8 @@ func (client *storageRESTClient) ReadFileStream(ctx context.Context, volume, pat
 	values.Set(storageRESTFilePath, path)
 	values.Set(storageRESTOffset, strconv.Itoa(int(offset)))
 	values.Set(storageRESTLength, strconv.Itoa(int(length)))
-	values.Set(storageRESTDiskID, *client.diskID.Load())
 
-	respBody, err := client.restClient.CallWithHTTPMethod(ctx, http.MethodGet, storageRESTMethodReadFileStream, values, nil, -1)
+	respBody, err := client.callGet(ctx, storageRESTMethodReadFileStream, values, nil, -1)
 	if err != nil {
 		return nil, toStorageErr(err)
 	}
@@ -640,7 +650,7 @@ func (client *storageRESTClient) ReadFile(ctx context.Context, volume string, pa
 		values.Set(storageRESTBitrotAlgo, "")
 		values.Set(storageRESTBitrotHash, "")
 	}
-	respBody, err := client.call(ctx, storageRESTMethodReadFile, values, nil, -1)
+	respBody, err := client.callGet(ctx, storageRESTMethodReadFile, values, nil, -1)
 	if err != nil {
 		return 0, err
 	}

cmd/storage-rest-common.go

@@ -20,7 +20,7 @@ package cmd
 //go:generate msgp -file $GOFILE -unexported
 
 const (
-	storageRESTVersion       = "v60" // ReadFileStream now uses http.MethodGet
+	storageRESTVersion       = "v61" // Move all Read* calls to http.MethodGet, compact handlers and query params fields
 	storageRESTVersionPrefix = SlashSeparator + storageRESTVersion
 	storageRESTPrefix        = minioReservedBucketPath + "/storage"
 )
@@ -28,48 +28,48 @@ const (
 const (
 	storageRESTMethodHealth = "/health"
 
-	storageRESTMethodAppendFile     = "/appendfile"
+	storageRESTMethodAppendFile     = "/afile"
-	storageRESTMethodCreateFile     = "/createfile"
+	storageRESTMethodCreateFile     = "/cfile"
-	storageRESTMethodWriteAll       = "/writeall"
+	storageRESTMethodWriteAll       = "/wall"
-	storageRESTMethodReadVersion    = "/readversion"
+	storageRESTMethodReadVersion    = "/rver"
-	storageRESTMethodReadXL         = "/readxl"
+	storageRESTMethodReadXL         = "/rxl"
-	storageRESTMethodReadAll        = "/readall"
+	storageRESTMethodReadAll        = "/rall"
-	storageRESTMethodReadFile       = "/readfile"
+	storageRESTMethodReadFile       = "/rfile"
-	storageRESTMethodReadFileStream = "/readfilestream"
+	storageRESTMethodReadFileStream = "/rfilest"
-	storageRESTMethodListDir        = "/listdir"
+	storageRESTMethodListDir        = "/ls"
-	storageRESTMethodDeleteVersions = "/deleteverions"
+	storageRESTMethodDeleteVersions = "/dvers"
-	storageRESTMethodRenameFile     = "/renamefile"
+	storageRESTMethodRenameFile     = "/rfile"
-	storageRESTMethodVerifyFile     = "/verifyfile"
+	storageRESTMethodVerifyFile     = "/vfile"
-	storageRESTMethodStatInfoFile   = "/statfile"
+	storageRESTMethodStatInfoFile   = "/sfile"
-	storageRESTMethodReadMultiple   = "/readmultiple"
+	storageRESTMethodReadMultiple   = "/rmpl"
-	storageRESTMethodCleanAbandoned = "/cleanabandoned"
+	storageRESTMethodCleanAbandoned = "/cln"
 )
 
 const (
-	storageRESTVolume           = "volume"
+	storageRESTVolume           = "vol"
-	storageRESTVolumes          = "volumes"
+	storageRESTVolumes          = "vols"
-	storageRESTDirPath          = "dir-path"
+	storageRESTDirPath          = "dpath"
-	storageRESTFilePath         = "file-path"
+	storageRESTFilePath         = "fp"
-	storageRESTVersionID        = "version-id"
+	storageRESTVersionID        = "vid"
-	storageRESTReadData         = "read-data"
+	storageRESTHealing          = "heal"
-	storageRESTHealing          = "healing"
+	storageRESTTotalVersions    = "tvers"
-	storageRESTTotalVersions    = "total-versions"
+	storageRESTSrcVolume        = "svol"
-	storageRESTSrcVolume        = "source-volume"
+	storageRESTSrcPath          = "spath"
-	storageRESTSrcPath          = "source-path"
+	storageRESTDstVolume        = "dvol"
-	storageRESTDstVolume        = "destination-volume"
+	storageRESTDstPath          = "dpath"
-	storageRESTDstPath          = "destination-path"
 	storageRESTOffset           = "offset"
 	storageRESTLength           = "length"
 	storageRESTCount            = "count"
-	storageRESTBitrotAlgo       = "bitrot-algo"
+	storageRESTBitrotAlgo       = "balg"
-	storageRESTBitrotHash       = "bitrot-hash"
+	storageRESTBitrotHash       = "bhash"
-	storageRESTDiskID           = "disk-id"
+	storageRESTDiskID           = "did"
-	storageRESTForceDelete      = "force-delete"
+	storageRESTForceDelete      = "fdel"
 	storageRESTGlob             = "glob"
 	storageRESTMetrics          = "metrics"
-	storageRESTDriveQuorum      = "drive-quorum"
+	storageRESTDriveQuorum      = "dquorum"
-	storageRESTOrigVolume       = "orig-volume"
+	storageRESTOrigVolume       = "ovol"
-	storageRESTInclFreeVersions = "incl-free-versions"
+	storageRESTInclFreeVersions = "incl-fv"
+	storageRESTRange            = "rng"
 )
 
 type nsScannerOptions struct {

cmd/storage-rest-server.go

@@ -375,10 +375,6 @@ func (s *storageRESTServer) ReadVersionHandlerWS(params *grid.MSS) (*FileInfo, *
 	volume := params.Get(storageRESTVolume)
 	filePath := params.Get(storageRESTFilePath)
 	versionID := params.Get(storageRESTVersionID)
-	readData, err := strconv.ParseBool(params.Get(storageRESTReadData))
-	if err != nil {
-		return nil, grid.NewRemoteErr(err)
-	}
 
 	healing, err := strconv.ParseBool(params.Get(storageRESTHealing))
 	if err != nil {
@@ -392,7 +388,7 @@ func (s *storageRESTServer) ReadVersionHandlerWS(params *grid.MSS) (*FileInfo, *
 
 	fi, err := s.getStorage().ReadVersion(context.Background(), origvolume, volume, filePath, versionID, ReadOptions{
 		InclFreeVersions: inclFreeVersions,
-		ReadData:         readData,
+		ReadData:         false,
 		Healing:          healing,
 	})
 	if err != nil {
@@ -410,11 +406,6 @@ func (s *storageRESTServer) ReadVersionHandler(w http.ResponseWriter, r *http.Re
 	volume := r.Form.Get(storageRESTVolume)
 	filePath := r.Form.Get(storageRESTFilePath)
 	versionID := r.Form.Get(storageRESTVersionID)
-	readData, err := strconv.ParseBool(r.Form.Get(storageRESTReadData))
-	if err != nil {
-		s.writeErrorResponse(w, err)
-		return
-	}
 	healing, err := strconv.ParseBool(r.Form.Get(storageRESTHealing))
 	if err != nil {
 		s.writeErrorResponse(w, err)
@@ -429,7 +420,7 @@ func (s *storageRESTServer) ReadVersionHandler(w http.ResponseWriter, r *http.Re
 
 	fi, err := s.getStorage().ReadVersion(r.Context(), origvolume, volume, filePath, versionID, ReadOptions{
 		InclFreeVersions: inclFreeVersions,
-		ReadData:         readData,
+		ReadData:         true,
 		Healing:          healing,
 	})
 	if err != nil {
@@ -506,15 +497,11 @@ func (s *storageRESTServer) ReadXLHandler(w http.ResponseWriter, r *http.Request
 	if !s.IsValid(w, r) {
 		return
 	}
+
 	volume := r.Form.Get(storageRESTVolume)
 	filePath := r.Form.Get(storageRESTFilePath)
-	readData, err := strconv.ParseBool(r.Form.Get(storageRESTReadData))
-	if err != nil {
-		s.writeErrorResponse(w, err)
-		return
-	}
 
-	rf, err := s.getStorage().ReadXL(r.Context(), volume, filePath, readData)
+	rf, err := s.getStorage().ReadXL(r.Context(), volume, filePath, true)
 	if err != nil {
 		s.writeErrorResponse(w, err)
 		return
@@ -528,14 +515,10 @@ func (s *storageRESTServer) ReadXLHandlerWS(params *grid.MSS) (*RawFileInfo, *gr
 	if !s.checkID(params.Get(storageRESTDiskID)) {
 		return nil, grid.NewRemoteErr(errDiskNotFound)
 	}
+
 	volume := params.Get(storageRESTVolume)
 	filePath := params.Get(storageRESTFilePath)
-	readData, err := strconv.ParseBool(params.Get(storageRESTReadData))
+	rf, err := s.getStorage().ReadXL(context.Background(), volume, filePath, false)
-	if err != nil {
-		return nil, grid.NewRemoteErr(err)
-	}
-
-	rf, err := s.getStorage().ReadXL(context.Background(), volume, filePath, readData)
 	if err != nil {
 		return nil, grid.NewRemoteErr(err)
 	}
@@ -1336,17 +1319,18 @@ func registerStorageRESTHandlers(router *mux.Router, endpointServerPools Endpoin
 
 			subrouter.Methods(http.MethodPost).Path(storageRESTVersionPrefix + storageRESTMethodHealth).HandlerFunc(h(server.HealthHandler))
 			subrouter.Methods(http.MethodPost).Path(storageRESTVersionPrefix + storageRESTMethodAppendFile).HandlerFunc(h(server.AppendFileHandler))
-			subrouter.Methods(http.MethodPost).Path(storageRESTVersionPrefix + storageRESTMethodReadVersion).HandlerFunc(h(server.ReadVersionHandler))
-			subrouter.Methods(http.MethodPost).Path(storageRESTVersionPrefix + storageRESTMethodReadXL).HandlerFunc(h(server.ReadXLHandler))
 			subrouter.Methods(http.MethodPost).Path(storageRESTVersionPrefix + storageRESTMethodCreateFile).HandlerFunc(h(server.CreateFileHandler))
-			subrouter.Methods(http.MethodPost).Path(storageRESTVersionPrefix + storageRESTMethodReadFile).HandlerFunc(h(server.ReadFileHandler))
-			subrouter.Methods(http.MethodPost).Path(storageRESTVersionPrefix + storageRESTMethodReadFileStream).HandlerFunc(h(server.ReadFileStreamHandler))
 			subrouter.Methods(http.MethodPost).Path(storageRESTVersionPrefix + storageRESTMethodDeleteVersions).HandlerFunc(h(server.DeleteVersionsHandler))
 			subrouter.Methods(http.MethodPost).Path(storageRESTVersionPrefix + storageRESTMethodVerifyFile).HandlerFunc(h(server.VerifyFileHandler))
 			subrouter.Methods(http.MethodPost).Path(storageRESTVersionPrefix + storageRESTMethodStatInfoFile).HandlerFunc(h(server.StatInfoFile))
 			subrouter.Methods(http.MethodPost).Path(storageRESTVersionPrefix + storageRESTMethodReadMultiple).HandlerFunc(h(server.ReadMultiple))
 			subrouter.Methods(http.MethodPost).Path(storageRESTVersionPrefix + storageRESTMethodCleanAbandoned).HandlerFunc(h(server.CleanAbandonedDataHandler))
+
 			subrouter.Methods(http.MethodGet).Path(storageRESTVersionPrefix + storageRESTMethodReadFileStream).HandlerFunc(h(server.ReadFileStreamHandler))
+			subrouter.Methods(http.MethodGet).Path(storageRESTVersionPrefix + storageRESTMethodReadVersion).HandlerFunc(h(server.ReadVersionHandler))
+			subrouter.Methods(http.MethodGet).Path(storageRESTVersionPrefix + storageRESTMethodReadXL).HandlerFunc(h(server.ReadXLHandler))
+			subrouter.Methods(http.MethodGet).Path(storageRESTVersionPrefix + storageRESTMethodReadFile).HandlerFunc(h(server.ReadFileHandler))
+
 			logger.FatalIf(storageListDirRPC.RegisterNoInput(gm, server.ListDirHandler, endpoint.Path), "unable to register handler")
 			logger.FatalIf(storageReadAllRPC.Register(gm, server.ReadAllHandler, endpoint.Path), "unable to register handler")
 			logger.FatalIf(storageWriteAllRPC.Register(gm, server.WriteAllHandler, endpoint.Path), "unable to register handler")