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/rpc_util.go | 654 +++++++++++++++++++----------- 1 file changed, 412 insertions(+), 242 deletions(-) (limited to 'vendor/google.golang.org/grpc/rpc_util.go') diff --git a/vendor/google.golang.org/grpc/rpc_util.go b/vendor/google.golang.org/grpc/rpc_util.go index 1703661..033801f 100644 --- a/vendor/google.golang.org/grpc/rpc_util.go +++ b/vendor/google.golang.org/grpc/rpc_util.go @@ -21,18 +21,21 @@ package grpc import ( "bytes" "compress/gzip" - stdctx "context" "encoding/binary" + "fmt" "io" "io/ioutil" "math" - "os" + "net/url" + "strings" "sync" "time" "golang.org/x/net/context" "google.golang.org/grpc/codes" "google.golang.org/grpc/credentials" + "google.golang.org/grpc/encoding" + "google.golang.org/grpc/encoding/proto" "google.golang.org/grpc/metadata" "google.golang.org/grpc/peer" "google.golang.org/grpc/stats" @@ -41,6 +44,8 @@ import ( ) // Compressor defines the interface gRPC uses to compress a message. +// +// Deprecated: use package encoding. type Compressor interface { // Do compresses p into w. Do(w io.Writer, p []byte) error @@ -53,14 +58,34 @@ type gzipCompressor struct { } // NewGZIPCompressor creates a Compressor based on GZIP. +// +// Deprecated: use package encoding/gzip. func NewGZIPCompressor() Compressor { + c, _ := NewGZIPCompressorWithLevel(gzip.DefaultCompression) + return c +} + +// NewGZIPCompressorWithLevel is like NewGZIPCompressor but specifies the gzip compression level instead +// of assuming DefaultCompression. +// +// The error returned will be nil if the level is valid. +// +// Deprecated: use package encoding/gzip. +func NewGZIPCompressorWithLevel(level int) (Compressor, error) { + if level < gzip.DefaultCompression || level > gzip.BestCompression { + return nil, fmt.Errorf("grpc: invalid compression level: %d", level) + } return &gzipCompressor{ pool: sync.Pool{ New: func() interface{} { - return gzip.NewWriter(ioutil.Discard) + w, err := gzip.NewWriterLevel(ioutil.Discard, level) + if err != nil { + panic(err) + } + return w }, }, - } + }, nil } func (c *gzipCompressor) Do(w io.Writer, p []byte) error { @@ -78,6 +103,8 @@ func (c *gzipCompressor) Type() string { } // Decompressor defines the interface gRPC uses to decompress a message. +// +// Deprecated: use package encoding. type Decompressor interface { // Do reads the data from r and uncompress them. Do(r io.Reader) ([]byte, error) @@ -90,6 +117,8 @@ type gzipDecompressor struct { } // NewGZIPDecompressor creates a Decompressor based on GZIP. +// +// Deprecated: use package encoding/gzip. func NewGZIPDecompressor() Decompressor { return &gzipDecompressor{} } @@ -124,14 +153,15 @@ func (d *gzipDecompressor) Type() string { // callInfo contains all related configuration and information about an RPC. type callInfo struct { + compressorType string failFast bool - headerMD metadata.MD - trailerMD metadata.MD - peer *peer.Peer + stream *clientStream traceInfo traceInfo // in trace.go maxReceiveMessageSize *int maxSendMessageSize *int creds credentials.PerRPCCredentials + contentSubtype string + codec baseCodec } func defaultCallInfo() *callInfo { @@ -158,86 +188,239 @@ type EmptyCallOption struct{} func (EmptyCallOption) before(*callInfo) error { return nil } func (EmptyCallOption) after(*callInfo) {} -type beforeCall func(c *callInfo) error - -func (o beforeCall) before(c *callInfo) error { return o(c) } -func (o beforeCall) after(c *callInfo) {} - -type afterCall func(c *callInfo) - -func (o afterCall) before(c *callInfo) error { return nil } -func (o afterCall) after(c *callInfo) { o(c) } - // Header returns a CallOptions that retrieves the header metadata // for a unary RPC. func Header(md *metadata.MD) CallOption { - return afterCall(func(c *callInfo) { - *md = c.headerMD - }) + return HeaderCallOption{HeaderAddr: md} +} + +// HeaderCallOption is a CallOption for collecting response header metadata. +// The metadata field will be populated *after* the RPC completes. +// This is an EXPERIMENTAL API. +type HeaderCallOption struct { + HeaderAddr *metadata.MD +} + +func (o HeaderCallOption) before(c *callInfo) error { return nil } +func (o HeaderCallOption) after(c *callInfo) { + if c.stream != nil { + *o.HeaderAddr, _ = c.stream.Header() + } } // Trailer returns a CallOptions that retrieves the trailer metadata // for a unary RPC. func Trailer(md *metadata.MD) CallOption { - return afterCall(func(c *callInfo) { - *md = c.trailerMD - }) + return TrailerCallOption{TrailerAddr: md} } -// Peer returns a CallOption that retrieves peer information for a -// unary RPC. -func Peer(peer *peer.Peer) CallOption { - return afterCall(func(c *callInfo) { - if c.peer != nil { - *peer = *c.peer +// TrailerCallOption is a CallOption for collecting response trailer metadata. +// The metadata field will be populated *after* the RPC completes. +// This is an EXPERIMENTAL API. +type TrailerCallOption struct { + TrailerAddr *metadata.MD +} + +func (o TrailerCallOption) before(c *callInfo) error { return nil } +func (o TrailerCallOption) after(c *callInfo) { + if c.stream != nil { + *o.TrailerAddr = c.stream.Trailer() + } +} + +// Peer returns a CallOption that retrieves peer information for a unary RPC. +// The peer field will be populated *after* the RPC completes. +func Peer(p *peer.Peer) CallOption { + return PeerCallOption{PeerAddr: p} +} + +// PeerCallOption is a CallOption for collecting the identity of the remote +// peer. The peer field will be populated *after* the RPC completes. +// This is an EXPERIMENTAL API. +type PeerCallOption struct { + PeerAddr *peer.Peer +} + +func (o PeerCallOption) before(c *callInfo) error { return nil } +func (o PeerCallOption) after(c *callInfo) { + if c.stream != nil { + if x, ok := peer.FromContext(c.stream.Context()); ok { + *o.PeerAddr = *x } - }) + } } // FailFast configures the action to take when an RPC is attempted on broken -// connections or unreachable servers. If failFast is true, the RPC will fail +// connections or unreachable servers. If failFast is true, the RPC will fail // immediately. Otherwise, the RPC client will block the call until a -// connection is available (or the call is canceled or times out). Please refer -// to https://github.com/grpc/grpc/blob/master/doc/wait-for-ready.md. -// The default behavior of RPCs is to fail fast. +// connection is available (or the call is canceled or times out) and will +// retry the call if it fails due to a transient error. gRPC will not retry if +// data was written to the wire unless the server indicates it did not process +// the data. Please refer to +// https://github.com/grpc/grpc/blob/master/doc/wait-for-ready.md. +// +// By default, RPCs are "Fail Fast". func FailFast(failFast bool) CallOption { - return beforeCall(func(c *callInfo) error { - c.failFast = failFast - return nil - }) + return FailFastCallOption{FailFast: failFast} } +// FailFastCallOption is a CallOption for indicating whether an RPC should fail +// fast or not. +// This is an EXPERIMENTAL API. +type FailFastCallOption struct { + FailFast bool +} + +func (o FailFastCallOption) before(c *callInfo) error { + c.failFast = o.FailFast + return nil +} +func (o FailFastCallOption) after(c *callInfo) {} + // MaxCallRecvMsgSize returns a CallOption which sets the maximum message size the client can receive. func MaxCallRecvMsgSize(s int) CallOption { - return beforeCall(func(o *callInfo) error { - o.maxReceiveMessageSize = &s - return nil - }) + return MaxRecvMsgSizeCallOption{MaxRecvMsgSize: s} +} + +// MaxRecvMsgSizeCallOption is a CallOption that indicates the maximum message +// size the client can receive. +// This is an EXPERIMENTAL API. +type MaxRecvMsgSizeCallOption struct { + MaxRecvMsgSize int } +func (o MaxRecvMsgSizeCallOption) before(c *callInfo) error { + c.maxReceiveMessageSize = &o.MaxRecvMsgSize + return nil +} +func (o MaxRecvMsgSizeCallOption) after(c *callInfo) {} + // MaxCallSendMsgSize returns a CallOption which sets the maximum message size the client can send. func MaxCallSendMsgSize(s int) CallOption { - return beforeCall(func(o *callInfo) error { - o.maxSendMessageSize = &s - return nil - }) + return MaxSendMsgSizeCallOption{MaxSendMsgSize: s} +} + +// MaxSendMsgSizeCallOption is a CallOption that indicates the maximum message +// size the client can send. +// This is an EXPERIMENTAL API. +type MaxSendMsgSizeCallOption struct { + MaxSendMsgSize int +} + +func (o MaxSendMsgSizeCallOption) before(c *callInfo) error { + c.maxSendMessageSize = &o.MaxSendMsgSize + return nil } +func (o MaxSendMsgSizeCallOption) after(c *callInfo) {} // PerRPCCredentials returns a CallOption that sets credentials.PerRPCCredentials // for a call. func PerRPCCredentials(creds credentials.PerRPCCredentials) CallOption { - return beforeCall(func(c *callInfo) error { - c.creds = creds - return nil - }) + return PerRPCCredsCallOption{Creds: creds} +} + +// PerRPCCredsCallOption is a CallOption that indicates the per-RPC +// credentials to use for the call. +// This is an EXPERIMENTAL API. +type PerRPCCredsCallOption struct { + Creds credentials.PerRPCCredentials +} + +func (o PerRPCCredsCallOption) before(c *callInfo) error { + c.creds = o.Creds + return nil +} +func (o PerRPCCredsCallOption) after(c *callInfo) {} + +// UseCompressor returns a CallOption which sets the compressor used when +// sending the request. If WithCompressor is also set, UseCompressor has +// higher priority. +// +// This API is EXPERIMENTAL. +func UseCompressor(name string) CallOption { + return CompressorCallOption{CompressorType: name} } +// CompressorCallOption is a CallOption that indicates the compressor to use. +// This is an EXPERIMENTAL API. +type CompressorCallOption struct { + CompressorType string +} + +func (o CompressorCallOption) before(c *callInfo) error { + c.compressorType = o.CompressorType + return nil +} +func (o CompressorCallOption) after(c *callInfo) {} + +// CallContentSubtype returns a CallOption that will set the content-subtype +// for a call. For example, if content-subtype is "json", the Content-Type over +// the wire will be "application/grpc+json". The content-subtype is converted +// to lowercase before being included in Content-Type. See Content-Type on +// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for +// more details. +// +// If CallCustomCodec is not also used, the content-subtype will be used to +// look up the Codec to use in the registry controlled by RegisterCodec. See +// the documentation on RegisterCodec for details on registration. The lookup +// of content-subtype is case-insensitive. If no such Codec is found, the call +// will result in an error with code codes.Internal. +// +// If CallCustomCodec is also used, that Codec will be used for all request and +// response messages, with the content-subtype set to the given contentSubtype +// here for requests. +func CallContentSubtype(contentSubtype string) CallOption { + return ContentSubtypeCallOption{ContentSubtype: strings.ToLower(contentSubtype)} +} + +// ContentSubtypeCallOption is a CallOption that indicates the content-subtype +// used for marshaling messages. +// This is an EXPERIMENTAL API. +type ContentSubtypeCallOption struct { + ContentSubtype string +} + +func (o ContentSubtypeCallOption) before(c *callInfo) error { + c.contentSubtype = o.ContentSubtype + return nil +} +func (o ContentSubtypeCallOption) after(c *callInfo) {} + +// CallCustomCodec returns a CallOption that will set the given Codec to be +// used for all request and response messages for a call. The result of calling +// String() will be used as the content-subtype in a case-insensitive manner. +// +// See Content-Type on +// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for +// more details. Also see the documentation on RegisterCodec and +// CallContentSubtype for more details on the interaction between Codec and +// content-subtype. +// +// This function is provided for advanced users; prefer to use only +// CallContentSubtype to select a registered codec instead. +func CallCustomCodec(codec Codec) CallOption { + return CustomCodecCallOption{Codec: codec} +} + +// CustomCodecCallOption is a CallOption that indicates the codec used for +// marshaling messages. +// This is an EXPERIMENTAL API. +type CustomCodecCallOption struct { + Codec Codec +} + +func (o CustomCodecCallOption) before(c *callInfo) error { + c.codec = o.Codec + return nil +} +func (o CustomCodecCallOption) after(c *callInfo) {} + // The format of the payload: compressed or not? type payloadFormat uint8 const ( - compressionNone payloadFormat = iota // no compression - compressionMade + compressionNone payloadFormat = 0 // no compression + compressionMade payloadFormat = 1 // compressed ) // parser reads complete gRPC messages from the underlying reader. @@ -247,8 +430,8 @@ type parser struct { // error types. r io.Reader - // The header of a gRPC message. Find more detail - // at https://grpc.io/docs/guides/wire.html. + // The header of a gRPC message. Find more detail at + // https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md header [5]byte } @@ -276,8 +459,11 @@ func (p *parser) recvMsg(maxReceiveMessageSize int) (pf payloadFormat, msg []byt if length == 0 { return pf, nil, nil } - if length > uint32(maxReceiveMessageSize) { - return 0, nil, Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", length, maxReceiveMessageSize) + if int64(length) > int64(maxInt) { + return 0, nil, status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max length allowed on current machine (%d vs. %d)", length, maxInt) + } + if int(length) > maxReceiveMessageSize { + return 0, nil, status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", length, maxReceiveMessageSize) } // TODO(bradfitz,zhaoq): garbage. reuse buffer after proto decoding instead // of making it for each message: @@ -291,67 +477,104 @@ func (p *parser) recvMsg(maxReceiveMessageSize int) (pf payloadFormat, msg []byt return pf, msg, nil } -// encode serializes msg and returns a buffer of message header and a buffer of msg. -// If msg is nil, it generates the message header and an empty msg buffer. -func encode(c Codec, msg interface{}, cp Compressor, cbuf *bytes.Buffer, outPayload *stats.OutPayload) ([]byte, []byte, error) { - var b []byte - const ( - payloadLen = 1 - sizeLen = 4 - ) +// encode serializes msg and returns a buffer containing the message, or an +// error if it is too large to be transmitted by grpc. If msg is nil, it +// generates an empty message. +func encode(c baseCodec, msg interface{}) ([]byte, error) { + if msg == nil { // NOTE: typed nils will not be caught by this check + return nil, nil + } + b, err := c.Marshal(msg) + if err != nil { + return nil, status.Errorf(codes.Internal, "grpc: error while marshaling: %v", err.Error()) + } + if uint(len(b)) > math.MaxUint32 { + return nil, status.Errorf(codes.ResourceExhausted, "grpc: message too large (%d bytes)", len(b)) + } + return b, nil +} - if msg != nil { - var err error - b, err = c.Marshal(msg) - if err != nil { - return nil, nil, Errorf(codes.Internal, "grpc: error while marshaling: %v", err.Error()) +// compress returns the input bytes compressed by compressor or cp. If both +// compressors are nil, returns nil. +// +// TODO(dfawley): eliminate cp parameter by wrapping Compressor in an encoding.Compressor. +func compress(in []byte, cp Compressor, compressor encoding.Compressor) ([]byte, error) { + if compressor == nil && cp == nil { + return nil, nil + } + wrapErr := func(err error) error { + return status.Errorf(codes.Internal, "grpc: error while compressing: %v", err.Error()) + } + cbuf := &bytes.Buffer{} + if compressor != nil { + z, _ := compressor.Compress(cbuf) + if _, err := z.Write(in); err != nil { + return nil, wrapErr(err) } - if outPayload != nil { - outPayload.Payload = msg - // TODO truncate large payload. - outPayload.Data = b - outPayload.Length = len(b) + if err := z.Close(); err != nil { + return nil, wrapErr(err) } - if cp != nil { - if err := cp.Do(cbuf, b); err != nil { - return nil, nil, Errorf(codes.Internal, "grpc: error while compressing: %v", err.Error()) - } - b = cbuf.Bytes() + } else { + if err := cp.Do(cbuf, in); err != nil { + return nil, wrapErr(err) } } + return cbuf.Bytes(), nil +} - if uint(len(b)) > math.MaxUint32 { - return nil, nil, Errorf(codes.ResourceExhausted, "grpc: message too large (%d bytes)", len(b)) - } +const ( + payloadLen = 1 + sizeLen = 4 + headerLen = payloadLen + sizeLen +) - bufHeader := make([]byte, payloadLen+sizeLen) - if cp == nil { - bufHeader[0] = byte(compressionNone) +// msgHeader returns a 5-byte header for the message being transmitted and the +// payload, which is compData if non-nil or data otherwise. +func msgHeader(data, compData []byte) (hdr []byte, payload []byte) { + hdr = make([]byte, headerLen) + if compData != nil { + hdr[0] = byte(compressionMade) + data = compData } else { - bufHeader[0] = byte(compressionMade) + hdr[0] = byte(compressionNone) } - // Write length of b into buf - binary.BigEndian.PutUint32(bufHeader[payloadLen:], uint32(len(b))) - if outPayload != nil { - outPayload.WireLength = payloadLen + sizeLen + len(b) + + // Write length of payload into buf + binary.BigEndian.PutUint32(hdr[payloadLen:], uint32(len(data))) + return hdr, data +} + +func outPayload(client bool, msg interface{}, data, payload []byte, t time.Time) *stats.OutPayload { + return &stats.OutPayload{ + Client: client, + Payload: msg, + Data: data, + Length: len(data), + WireLength: len(payload) + headerLen, + SentTime: t, } - return bufHeader, b, nil } -func checkRecvPayload(pf payloadFormat, recvCompress string, dc Decompressor) error { +func checkRecvPayload(pf payloadFormat, recvCompress string, haveCompressor bool) *status.Status { switch pf { case compressionNone: case compressionMade: - if dc == nil || recvCompress != dc.Type() { - return Errorf(codes.Unimplemented, "grpc: Decompressor is not installed for grpc-encoding %q", recvCompress) + if recvCompress == "" || recvCompress == encoding.Identity { + return status.New(codes.Internal, "grpc: compressed flag set with identity or empty encoding") + } + if !haveCompressor { + return status.Newf(codes.Unimplemented, "grpc: Decompressor is not installed for grpc-encoding %q", recvCompress) } default: - return Errorf(codes.Internal, "grpc: received unexpected payload format %d", pf) + return status.Newf(codes.Internal, "grpc: received unexpected payload format %d", pf) } return nil } -func recv(p *parser, c Codec, s *transport.Stream, dc Decompressor, m interface{}, maxReceiveMessageSize int, inPayload *stats.InPayload) error { +// For the two compressor parameters, both should not be set, but if they are, +// dc takes precedence over compressor. +// TODO(dfawley): wrap the old compressor/decompressor using the new API? +func recv(p *parser, c baseCodec, s *transport.Stream, dc Decompressor, m interface{}, maxReceiveMessageSize int, inPayload *stats.InPayload, compressor encoding.Compressor) error { pf, d, err := p.recvMsg(maxReceiveMessageSize) if err != nil { return err @@ -359,22 +582,37 @@ func recv(p *parser, c Codec, s *transport.Stream, dc Decompressor, m interface{ if inPayload != nil { inPayload.WireLength = len(d) } - if err := checkRecvPayload(pf, s.RecvCompress(), dc); err != nil { - return err + + if st := checkRecvPayload(pf, s.RecvCompress(), compressor != nil || dc != nil); st != nil { + return st.Err() } + if pf == compressionMade { - d, err = dc.Do(bytes.NewReader(d)) - if err != nil { - return Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err) + // To match legacy behavior, if the decompressor is set by WithDecompressor or RPCDecompressor, + // use this decompressor as the default. + if dc != nil { + d, err = dc.Do(bytes.NewReader(d)) + if err != nil { + return status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err) + } + } else { + dcReader, err := compressor.Decompress(bytes.NewReader(d)) + if err != nil { + return status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err) + } + d, err = ioutil.ReadAll(dcReader) + if err != nil { + return status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err) + } } } if len(d) > maxReceiveMessageSize { // TODO: Revisit the error code. Currently keep it consistent with java // implementation. - return Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", len(d), maxReceiveMessageSize) + return status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", len(d), maxReceiveMessageSize) } if err := c.Unmarshal(d, m); err != nil { - return Errorf(codes.Internal, "grpc: failed to unmarshal the received message %v", err) + return status.Errorf(codes.Internal, "grpc: failed to unmarshal the received message %v", err) } if inPayload != nil { inPayload.RecvTime = time.Now() @@ -387,9 +625,7 @@ func recv(p *parser, c Codec, s *transport.Stream, dc Decompressor, m interface{ } type rpcInfo struct { - failfast bool - bytesSent bool - bytesReceived bool + failfast bool } type rpcInfoContextKey struct{} @@ -403,69 +639,10 @@ func rpcInfoFromContext(ctx context.Context) (s *rpcInfo, ok bool) { return } -func updateRPCInfoInContext(ctx context.Context, s rpcInfo) { - if ss, ok := rpcInfoFromContext(ctx); ok { - ss.bytesReceived = s.bytesReceived - ss.bytesSent = s.bytesSent - } - return -} - -// toRPCErr converts an error into an error from the status package. -func toRPCErr(err error) error { - if _, ok := status.FromError(err); ok { - return err - } - switch e := err.(type) { - case transport.StreamError: - return status.Error(e.Code, e.Desc) - case transport.ConnectionError: - return status.Error(codes.Unavailable, e.Desc) - default: - switch err { - case context.DeadlineExceeded, stdctx.DeadlineExceeded: - return status.Error(codes.DeadlineExceeded, err.Error()) - case context.Canceled, stdctx.Canceled: - return status.Error(codes.Canceled, err.Error()) - case ErrClientConnClosing: - return status.Error(codes.FailedPrecondition, err.Error()) - } - } - return status.Error(codes.Unknown, err.Error()) -} - -// convertCode converts a standard Go error into its canonical code. Note that -// this is only used to translate the error returned by the server applications. -func convertCode(err error) codes.Code { - switch err { - case nil: - return codes.OK - case io.EOF: - return codes.OutOfRange - case io.ErrClosedPipe, io.ErrNoProgress, io.ErrShortBuffer, io.ErrShortWrite, io.ErrUnexpectedEOF: - return codes.FailedPrecondition - case os.ErrInvalid: - return codes.InvalidArgument - case context.Canceled, stdctx.Canceled: - return codes.Canceled - case context.DeadlineExceeded, stdctx.DeadlineExceeded: - return codes.DeadlineExceeded - } - switch { - case os.IsExist(err): - return codes.AlreadyExists - case os.IsNotExist(err): - return codes.NotFound - case os.IsPermission(err): - return codes.PermissionDenied - } - return codes.Unknown -} - // Code returns the error code for err if it was produced by the rpc system. // Otherwise, it returns codes.Unknown. // -// Deprecated; use status.FromError and Code method instead. +// Deprecated: use status.FromError and Code method instead. func Code(err error) codes.Code { if s, ok := status.FromError(err); ok { return s.Code() @@ -476,7 +653,7 @@ func Code(err error) codes.Code { // ErrorDesc returns the error description of err if it was produced by the rpc system. // Otherwise, it returns err.Error() or empty string when err is nil. // -// Deprecated; use status.FromError and Message method instead. +// Deprecated: use status.FromError and Message method instead. func ErrorDesc(err error) string { if s, ok := status.FromError(err); ok { return s.Message() @@ -487,85 +664,78 @@ func ErrorDesc(err error) string { // Errorf returns an error containing an error code and a description; // Errorf returns nil if c is OK. // -// Deprecated; use status.Errorf instead. +// Deprecated: use status.Errorf instead. func Errorf(c codes.Code, format string, a ...interface{}) error { return status.Errorf(c, format, a...) } -// MethodConfig defines the configuration recommended by the service providers for a -// particular method. -// This is EXPERIMENTAL and subject to change. -type MethodConfig struct { - // WaitForReady indicates whether RPCs sent to this method should wait until - // the connection is ready by default (!failfast). The value specified via the - // gRPC client API will override the value set here. - WaitForReady *bool - // Timeout is the default timeout for RPCs sent to this method. The actual - // deadline used will be the minimum of the value specified here and the value - // set by the application via the gRPC client API. If either one is not set, - // then the other will be used. If neither is set, then the RPC has no deadline. - Timeout *time.Duration - // MaxReqSize is the maximum allowed payload size for an individual request in a - // stream (client->server) in bytes. The size which is measured is the serialized - // payload after per-message compression (but before stream compression) in bytes. - // The actual value used is the minimum of the value specified here and the value set - // by the application via the gRPC client API. If either one is not set, then the other - // will be used. If neither is set, then the built-in default is used. - MaxReqSize *int - // MaxRespSize is the maximum allowed payload size for an individual response in a - // stream (server->client) in bytes. - MaxRespSize *int -} - -// ServiceConfig is provided by the service provider and contains parameters for how -// clients that connect to the service should behave. -// This is EXPERIMENTAL and subject to change. -type ServiceConfig struct { - // LB is the load balancer the service providers recommends. The balancer specified - // via grpc.WithBalancer will override this. - LB Balancer - // Methods contains a map for the methods in this service. - // If there is an exact match for a method (i.e. /service/method) in the map, use the corresponding MethodConfig. - // If there's no exact match, look for the default config for the service (/service/) and use the corresponding MethodConfig if it exists. - // Otherwise, the method has no MethodConfig to use. - Methods map[string]MethodConfig -} - -func min(a, b *int) *int { - if *a < *b { - return a - } - return b -} - -func getMaxSize(mcMax, doptMax *int, defaultVal int) *int { - if mcMax == nil && doptMax == nil { - return &defaultVal - } - if mcMax != nil && doptMax != nil { - return min(mcMax, doptMax) - } - if mcMax != nil { - return mcMax - } - return doptMax -} - -// SupportPackageIsVersion3 is referenced from generated protocol buffer files. -// The latest support package version is 4. -// SupportPackageIsVersion3 is kept for compatibility. It will be removed in the -// next support package version update. -const SupportPackageIsVersion3 = true - -// SupportPackageIsVersion4 is referenced from generated protocol buffer files -// to assert that that code is compatible with this version of the grpc package. -// -// This constant may be renamed in the future if a change in the generated code -// requires a synchronised update of grpc-go and protoc-gen-go. This constant -// should not be referenced from any other code. -const SupportPackageIsVersion4 = true +// setCallInfoCodec should only be called after CallOptions have been applied. +func setCallInfoCodec(c *callInfo) error { + if c.codec != nil { + // codec was already set by a CallOption; use it. + return nil + } -// Version is the current grpc version. -const Version = "1.8.0-dev" + if c.contentSubtype == "" { + // No codec specified in CallOptions; use proto by default. + c.codec = encoding.GetCodec(proto.Name) + return nil + } + + // c.contentSubtype is already lowercased in CallContentSubtype + c.codec = encoding.GetCodec(c.contentSubtype) + if c.codec == nil { + return status.Errorf(codes.Internal, "no codec registered for content-subtype %s", c.contentSubtype) + } + return nil +} + +// parseDialTarget returns the network and address to pass to dialer +func parseDialTarget(target string) (net string, addr string) { + net = "tcp" + + m1 := strings.Index(target, ":") + m2 := strings.Index(target, ":/") + + // handle unix:addr which will fail with url.Parse + if m1 >= 0 && m2 < 0 { + if n := target[0:m1]; n == "unix" { + net = n + addr = target[m1+1:] + return net, addr + } + } + if m2 >= 0 { + t, err := url.Parse(target) + if err != nil { + return net, target + } + scheme := t.Scheme + addr = t.Path + if scheme == "unix" { + net = scheme + if addr == "" { + addr = t.Host + } + return net, addr + } + } + + return net, target +} + +// The SupportPackageIsVersion variables are referenced from generated protocol +// buffer files to ensure compatibility with the gRPC version used. The latest +// support package version is 5. +// +// Older versions are kept for compatibility. They may be removed if +// compatibility cannot be maintained. +// +// These constants should not be referenced from any other code. +const ( + SupportPackageIsVersion3 = true + SupportPackageIsVersion4 = true + SupportPackageIsVersion5 = true +) const grpcUA = "grpc-go/" + Version -- cgit v1.2.3