From de6d2c524430287c699aaa898c1325da6afea539 Mon Sep 17 00:00:00 2001 From: Niall Sheridan Date: Wed, 20 Jun 2018 22:39:07 +0100 Subject: Update dependencies --- vendor/google.golang.org/grpc/call.go | 308 ++++++---------------------------- 1 file changed, 47 insertions(+), 261 deletions(-) (limited to 'vendor/google.golang.org/grpc/call.go') diff --git a/vendor/google.golang.org/grpc/call.go b/vendor/google.golang.org/grpc/call.go index 1ef2507..f73b7d5 100644 --- a/vendor/google.golang.org/grpc/call.go +++ b/vendor/google.golang.org/grpc/call.go @@ -19,289 +19,75 @@ package grpc import ( - "bytes" - "io" - "time" - "golang.org/x/net/context" - "golang.org/x/net/trace" - "google.golang.org/grpc/balancer" - "google.golang.org/grpc/codes" - "google.golang.org/grpc/peer" - "google.golang.org/grpc/stats" - "google.golang.org/grpc/status" - "google.golang.org/grpc/transport" ) -// recvResponse receives and parses an RPC response. -// On error, it returns the error and indicates whether the call should be retried. +// Invoke sends the RPC request on the wire and returns after response is +// received. This is typically called by generated code. // -// TODO(zhaoq): Check whether the received message sequence is valid. -// TODO ctx is used for stats collection and processing. It is the context passed from the application. -func recvResponse(ctx context.Context, dopts dialOptions, t transport.ClientTransport, c *callInfo, stream *transport.Stream, reply interface{}) (err error) { - // Try to acquire header metadata from the server if there is any. - defer func() { - if err != nil { - if _, ok := err.(transport.ConnectionError); !ok { - t.CloseStream(stream, err) - } - } - }() - c.headerMD, err = stream.Header() - if err != nil { - return - } - p := &parser{r: stream} - var inPayload *stats.InPayload - if dopts.copts.StatsHandler != nil { - inPayload = &stats.InPayload{ - Client: true, - } - } - for { - if c.maxReceiveMessageSize == nil { - return Errorf(codes.Internal, "callInfo maxReceiveMessageSize field uninitialized(nil)") - } - if err = recv(p, dopts.codec, stream, dopts.dc, reply, *c.maxReceiveMessageSize, inPayload); err != nil { - if err == io.EOF { - break - } - return - } - } - if inPayload != nil && err == io.EOF && stream.Status().Code() == codes.OK { - // TODO in the current implementation, inTrailer may be handled before inPayload in some cases. - // Fix the order if necessary. - dopts.copts.StatsHandler.HandleRPC(ctx, inPayload) - } - c.trailerMD = stream.Trailer() - return nil -} +// All errors returned by Invoke are compatible with the status package. +func (cc *ClientConn) Invoke(ctx context.Context, method string, args, reply interface{}, opts ...CallOption) error { + // allow interceptor to see all applicable call options, which means those + // configured as defaults from dial option as well as per-call options + opts = combine(cc.dopts.callOptions, opts) -// sendRequest writes out various information of an RPC such as Context and Message. -func sendRequest(ctx context.Context, dopts dialOptions, compressor Compressor, c *callInfo, callHdr *transport.CallHdr, stream *transport.Stream, t transport.ClientTransport, args interface{}, opts *transport.Options) (err error) { - defer func() { - if err != nil { - // If err is connection error, t will be closed, no need to close stream here. - if _, ok := err.(transport.ConnectionError); !ok { - t.CloseStream(stream, err) - } - } - }() - var ( - cbuf *bytes.Buffer - outPayload *stats.OutPayload - ) - if compressor != nil { - cbuf = new(bytes.Buffer) - } - if dopts.copts.StatsHandler != nil { - outPayload = &stats.OutPayload{ - Client: true, - } - } - hdr, data, err := encode(dopts.codec, args, compressor, cbuf, outPayload) - if err != nil { - return err - } - if c.maxSendMessageSize == nil { - return Errorf(codes.Internal, "callInfo maxSendMessageSize field uninitialized(nil)") - } - if len(data) > *c.maxSendMessageSize { - return Errorf(codes.ResourceExhausted, "grpc: trying to send message larger than max (%d vs. %d)", len(data), *c.maxSendMessageSize) - } - err = t.Write(stream, hdr, data, opts) - if err == nil && outPayload != nil { - outPayload.SentTime = time.Now() - dopts.copts.StatsHandler.HandleRPC(ctx, outPayload) - } - // t.NewStream(...) could lead to an early rejection of the RPC (e.g., the service/method - // does not exist.) so that t.Write could get io.EOF from wait(...). Leave the following - // recvResponse to get the final status. - if err != nil && err != io.EOF { - return err - } - // Sent successfully. - return nil -} - -// Invoke sends the RPC request on the wire and returns after response is received. -// Invoke is called by generated code. Also users can call Invoke directly when it -// is really needed in their use cases. -func Invoke(ctx context.Context, method string, args, reply interface{}, cc *ClientConn, opts ...CallOption) error { if cc.dopts.unaryInt != nil { return cc.dopts.unaryInt(ctx, method, args, reply, cc, invoke, opts...) } return invoke(ctx, method, args, reply, cc, opts...) } -func invoke(ctx context.Context, method string, args, reply interface{}, cc *ClientConn, opts ...CallOption) (e error) { - c := defaultCallInfo() - mc := cc.GetMethodConfig(method) - if mc.WaitForReady != nil { - c.failFast = !*mc.WaitForReady - } - - if mc.Timeout != nil && *mc.Timeout >= 0 { - var cancel context.CancelFunc - ctx, cancel = context.WithTimeout(ctx, *mc.Timeout) - defer cancel() - } +func combine(o1 []CallOption, o2 []CallOption) []CallOption { + // we don't use append because o1 could have extra capacity whose + // elements would be overwritten, which could cause inadvertent + // sharing (and race connditions) between concurrent calls + if len(o1) == 0 { + return o2 + } else if len(o2) == 0 { + return o1 + } + ret := make([]CallOption, len(o1)+len(o2)) + copy(ret, o1) + copy(ret[len(o1):], o2) + return ret +} - opts = append(cc.dopts.callOptions, opts...) - for _, o := range opts { - if err := o.before(c); err != nil { - return toRPCErr(err) - } - } - defer func() { - for _, o := range opts { - o.after(c) - } - }() +// Invoke sends the RPC request on the wire and returns after response is +// received. This is typically called by generated code. +// +// DEPRECATED: Use ClientConn.Invoke instead. +func Invoke(ctx context.Context, method string, args, reply interface{}, cc *ClientConn, opts ...CallOption) error { + return cc.Invoke(ctx, method, args, reply, opts...) +} - c.maxSendMessageSize = getMaxSize(mc.MaxReqSize, c.maxSendMessageSize, defaultClientMaxSendMessageSize) - c.maxReceiveMessageSize = getMaxSize(mc.MaxRespSize, c.maxReceiveMessageSize, defaultClientMaxReceiveMessageSize) +var unaryStreamDesc = &StreamDesc{ServerStreams: false, ClientStreams: false} - if EnableTracing { - c.traceInfo.tr = trace.New("grpc.Sent."+methodFamily(method), method) - defer c.traceInfo.tr.Finish() - c.traceInfo.firstLine.client = true - if deadline, ok := ctx.Deadline(); ok { - c.traceInfo.firstLine.deadline = deadline.Sub(time.Now()) - } - c.traceInfo.tr.LazyLog(&c.traceInfo.firstLine, false) - // TODO(dsymonds): Arrange for c.traceInfo.firstLine.remoteAddr to be set. - defer func() { - if e != nil { - c.traceInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{e}}, true) - c.traceInfo.tr.SetError() - } - }() - } - ctx = newContextWithRPCInfo(ctx, c.failFast) - sh := cc.dopts.copts.StatsHandler - if sh != nil { - ctx = sh.TagRPC(ctx, &stats.RPCTagInfo{FullMethodName: method, FailFast: c.failFast}) - begin := &stats.Begin{ - Client: true, - BeginTime: time.Now(), - FailFast: c.failFast, - } - sh.HandleRPC(ctx, begin) - defer func() { - end := &stats.End{ - Client: true, - EndTime: time.Now(), - Error: e, - } - sh.HandleRPC(ctx, end) - }() - } - topts := &transport.Options{ - Last: true, - Delay: false, - } +func invoke(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, opts ...CallOption) error { + // TODO: implement retries in clientStream and make this simply + // newClientStream, SendMsg, RecvMsg. + firstAttempt := true for { - var ( - err error - t transport.ClientTransport - stream *transport.Stream - // Record the done handler from Balancer.Get(...). It is called once the - // RPC has completed or failed. - done func(balancer.DoneInfo) - ) - // TODO(zhaoq): Need a formal spec of fail-fast. - callHdr := &transport.CallHdr{ - Host: cc.authority, - Method: method, - } - if cc.dopts.cp != nil { - callHdr.SendCompress = cc.dopts.cp.Type() - } - if c.creds != nil { - callHdr.Creds = c.creds - } - - t, done, err = cc.getTransport(ctx, c.failFast) + csInt, err := newClientStream(ctx, unaryStreamDesc, cc, method, opts...) if err != nil { - // TODO(zhaoq): Probably revisit the error handling. - if _, ok := status.FromError(err); ok { - return err - } - if err == errConnClosing || err == errConnUnavailable { - if c.failFast { - return Errorf(codes.Unavailable, "%v", err) - } - continue - } - // All the other errors are treated as Internal errors. - return Errorf(codes.Internal, "%v", err) - } - if c.traceInfo.tr != nil { - c.traceInfo.tr.LazyLog(&payload{sent: true, msg: args}, true) - } - stream, err = t.NewStream(ctx, callHdr) - if err != nil { - if done != nil { - if _, ok := err.(transport.ConnectionError); ok { - // If error is connection error, transport was sending data on wire, - // and we are not sure if anything has been sent on wire. - // If error is not connection error, we are sure nothing has been sent. - updateRPCInfoInContext(ctx, rpcInfo{bytesSent: true, bytesReceived: false}) - } - done(balancer.DoneInfo{Err: err}) - } - if _, ok := err.(transport.ConnectionError); (ok || err == transport.ErrStreamDrain) && !c.failFast { - continue - } - return toRPCErr(err) - } - if peer, ok := peer.FromContext(stream.Context()); ok { - c.peer = peer + return err } - err = sendRequest(ctx, cc.dopts, cc.dopts.cp, c, callHdr, stream, t, args, topts) - if err != nil { - if done != nil { - updateRPCInfoInContext(ctx, rpcInfo{ - bytesSent: stream.BytesSent(), - bytesReceived: stream.BytesReceived(), - }) - done(balancer.DoneInfo{Err: err}) - } - // Retry a non-failfast RPC when - // i) there is a connection error; or - // ii) the server started to drain before this RPC was initiated. - if _, ok := err.(transport.ConnectionError); (ok || err == transport.ErrStreamDrain) && !c.failFast { + cs := csInt.(*clientStream) + if err := cs.SendMsg(req); err != nil { + if !cs.c.failFast && cs.attempt.s.Unprocessed() && firstAttempt { + // TODO: Add a field to header for grpc-transparent-retry-attempts + firstAttempt = false continue } - return toRPCErr(err) + return err } - err = recvResponse(ctx, cc.dopts, t, c, stream, reply) - if err != nil { - if done != nil { - updateRPCInfoInContext(ctx, rpcInfo{ - bytesSent: stream.BytesSent(), - bytesReceived: stream.BytesReceived(), - }) - done(balancer.DoneInfo{Err: err}) - } - if _, ok := err.(transport.ConnectionError); (ok || err == transport.ErrStreamDrain) && !c.failFast { + if err := cs.RecvMsg(reply); err != nil { + if !cs.c.failFast && cs.attempt.s.Unprocessed() && firstAttempt { + // TODO: Add a field to header for grpc-transparent-retry-attempts + firstAttempt = false continue } - return toRPCErr(err) - } - if c.traceInfo.tr != nil { - c.traceInfo.tr.LazyLog(&payload{sent: false, msg: reply}, true) - } - t.CloseStream(stream, nil) - if done != nil { - updateRPCInfoInContext(ctx, rpcInfo{ - bytesSent: stream.BytesSent(), - bytesReceived: stream.BytesReceived(), - }) - done(balancer.DoneInfo{Err: err}) + return err } - return stream.Status().Err() + return nil } } -- cgit v1.2.3