diff options
Diffstat (limited to 'vendor/google.golang.org/grpc/internal/transport/handler_server.go')
| -rw-r--r-- | vendor/google.golang.org/grpc/internal/transport/handler_server.go | 45 |
1 files changed, 29 insertions, 16 deletions
diff --git a/vendor/google.golang.org/grpc/internal/transport/handler_server.go b/vendor/google.golang.org/grpc/internal/transport/handler_server.go index 4a3ddce29..e1cd86b2f 100644 --- a/vendor/google.golang.org/grpc/internal/transport/handler_server.go +++ b/vendor/google.golang.org/grpc/internal/transport/handler_server.go @@ -24,7 +24,6 @@ package transport import ( - "bytes" "context" "errors" "fmt" @@ -40,6 +39,7 @@ import ( "google.golang.org/grpc/credentials" "google.golang.org/grpc/internal/grpclog" "google.golang.org/grpc/internal/grpcutil" + "google.golang.org/grpc/mem" "google.golang.org/grpc/metadata" "google.golang.org/grpc/peer" "google.golang.org/grpc/stats" @@ -50,7 +50,7 @@ import ( // NewServerHandlerTransport returns a ServerTransport handling gRPC from // inside an http.Handler, or writes an HTTP error to w and returns an error. // It requires that the http Server supports HTTP/2. -func NewServerHandlerTransport(w http.ResponseWriter, r *http.Request, stats []stats.Handler) (ServerTransport, error) { +func NewServerHandlerTransport(w http.ResponseWriter, r *http.Request, stats []stats.Handler, bufferPool mem.BufferPool) (ServerTransport, error) { if r.Method != http.MethodPost { w.Header().Set("Allow", http.MethodPost) msg := fmt.Sprintf("invalid gRPC request method %q", r.Method) @@ -98,6 +98,7 @@ func NewServerHandlerTransport(w http.ResponseWriter, r *http.Request, stats []s contentType: contentType, contentSubtype: contentSubtype, stats: stats, + bufferPool: bufferPool, } st.logger = prefixLoggerForServerHandlerTransport(st) @@ -171,6 +172,8 @@ type serverHandlerTransport struct { stats []stats.Handler logger *grpclog.PrefixLogger + + bufferPool mem.BufferPool } func (ht *serverHandlerTransport) Close(err error) { @@ -244,6 +247,7 @@ func (ht *serverHandlerTransport) WriteStatus(s *Stream, st *status.Status) erro } s.hdrMu.Lock() + defer s.hdrMu.Unlock() if p := st.Proto(); p != nil && len(p.Details) > 0 { delete(s.trailer, grpcStatusDetailsBinHeader) stBytes, err := proto.Marshal(p) @@ -268,7 +272,6 @@ func (ht *serverHandlerTransport) WriteStatus(s *Stream, st *status.Status) erro } } } - s.hdrMu.Unlock() }) if err == nil { // transport has not been closed @@ -330,16 +333,28 @@ func (ht *serverHandlerTransport) writeCustomHeaders(s *Stream) { s.hdrMu.Unlock() } -func (ht *serverHandlerTransport) Write(s *Stream, hdr []byte, data []byte, opts *Options) error { +func (ht *serverHandlerTransport) Write(s *Stream, hdr []byte, data mem.BufferSlice, opts *Options) error { + // Always take a reference because otherwise there is no guarantee the data will + // be available after this function returns. This is what callers to Write + // expect. + data.Ref() headersWritten := s.updateHeaderSent() - return ht.do(func() { + err := ht.do(func() { + defer data.Free() if !headersWritten { ht.writePendingHeaders(s) } ht.rw.Write(hdr) - ht.rw.Write(data) + for _, b := range data { + _, _ = ht.rw.Write(b.ReadOnlyData()) + } ht.rw.(http.Flusher).Flush() }) + if err != nil { + data.Free() + return err + } + return nil } func (ht *serverHandlerTransport) WriteHeader(s *Stream, md metadata.MD) error { @@ -406,7 +421,7 @@ func (ht *serverHandlerTransport) HandleStreams(ctx context.Context, startStream headerWireLength: 0, // won't have access to header wire length until golang/go#18997. } s.trReader = &transportReader{ - reader: &recvBufferReader{ctx: s.ctx, ctxDone: s.ctx.Done(), recv: s.buf, freeBuffer: func(*bytes.Buffer) {}}, + reader: &recvBufferReader{ctx: s.ctx, ctxDone: s.ctx.Done(), recv: s.buf}, windowHandler: func(int) {}, } @@ -415,21 +430,19 @@ func (ht *serverHandlerTransport) HandleStreams(ctx context.Context, startStream go func() { defer close(readerDone) - // TODO: minimize garbage, optimize recvBuffer code/ownership - const readSize = 8196 - for buf := make([]byte, readSize); ; { - n, err := req.Body.Read(buf) + for { + buf := ht.bufferPool.Get(http2MaxFrameLen) + n, err := req.Body.Read(*buf) if n > 0 { - s.buf.put(recvMsg{buffer: bytes.NewBuffer(buf[:n:n])}) - buf = buf[n:] + *buf = (*buf)[:n] + s.buf.put(recvMsg{buffer: mem.NewBuffer(buf, ht.bufferPool)}) + } else { + ht.bufferPool.Put(buf) } if err != nil { s.buf.put(recvMsg{err: mapRecvMsgError(err)}) return } - if len(buf) == 0 { - buf = make([]byte, readSize) - } } }() |