diff --git a/vendor.conf b/vendor.conf index 0ba253cca7bf..056d35b35862 100755 --- a/vendor.conf +++ b/vendor.conf @@ -87,7 +87,7 @@ golang.org/x/sys 9eafafc0a87e0fd0aeeba439a457 golang.org/x/text f21a4dfb5e38f5895301dc265a8def02365cc3d0 # v0.3.0 golang.org/x/time fbb02b2291d28baffd63558aa44b4b56f178d650 google.golang.org/genproto 02b4e95473316948020af0b7a4f0f22c73929b0e -google.golang.org/grpc 25c4f928eaa6d96443009bd842389fb4fa48664e # v1.20.1 +google.golang.org/grpc 6eaf6f47437a6b4e2153a190160ef39a92c7eceb # v1.23.0 gopkg.in/inf.v0 d2d2541c53f18d2a059457998ce2876cc8e67cbf # v0.9.1 gopkg.in/yaml.v2 5420a8b6744d3b0345ab293f6fcba19c978f1183 # v2.2.1 gotest.tools 1083505acf35a0bd8a696b26837e1fb3187a7a83 # v2.3.0 diff --git a/vendor/google.golang.org/grpc/README.md b/vendor/google.golang.org/grpc/README.md index f5eec6717f31..afbc43db5105 100644 --- a/vendor/google.golang.org/grpc/README.md +++ b/vendor/google.golang.org/grpc/README.md @@ -1,42 +1,96 @@ # gRPC-Go -[![Build Status](https://travis-ci.org/grpc/grpc-go.svg)](https://travis-ci.org/grpc/grpc-go) [![GoDoc](https://godoc.org/google.golang.org/grpc?status.svg)](https://godoc.org/google.golang.org/grpc) [![GoReportCard](https://goreportcard.com/badge/grpc/grpc-go)](https://goreportcard.com/report/github.com/grpc/grpc-go) +[![Build Status](https://travis-ci.org/grpc/grpc-go.svg)](https://travis-ci.org/grpc/grpc-go) +[![GoDoc](https://godoc.org/google.golang.org/grpc?status.svg)](https://godoc.org/google.golang.org/grpc) +[![GoReportCard](https://goreportcard.com/badge/grpc/grpc-go)](https://goreportcard.com/report/github.com/grpc/grpc-go) -The Go implementation of [gRPC](https://grpc.io/): A high performance, open source, general RPC framework that puts mobile and HTTP/2 first. For more information see the [gRPC Quick Start: Go](https://grpc.io/docs/quickstart/go.html) guide. +The Go implementation of [gRPC](https://grpc.io/): A high performance, open +source, general RPC framework that puts mobile and HTTP/2 first. For more +information see the [gRPC Quick Start: +Go](https://grpc.io/docs/quickstart/go.html) guide. Installation ------------ -To install this package, you need to install Go and setup your Go workspace on your computer. The simplest way to install the library is to run: +To install this package, you need to install Go and setup your Go workspace on +your computer. The simplest way to install the library is to run: ``` $ go get -u google.golang.org/grpc ``` +With Go module support (Go 1.11+), simply `import "google.golang.org/grpc"` in +your source code and `go [build|run|test]` will automatically download the +necessary dependencies ([Go modules +ref](https://github.com/golang/go/wiki/Modules)). + +If you are trying to access grpc-go from within China, please see the +[FAQ](#FAQ) below. + Prerequisites ------------- - gRPC-Go requires Go 1.9 or later. -Constraints ------------ -The grpc package should only depend on standard Go packages and a small number of exceptions. If your contribution introduces new dependencies which are NOT in the [list](https://godoc.org/google.golang.org/grpc?imports), you need a discussion with gRPC-Go authors and consultants. - Documentation ------------- -See [API documentation](https://godoc.org/google.golang.org/grpc) for package and API descriptions and find examples in the [examples directory](examples/). +- See [godoc](https://godoc.org/google.golang.org/grpc) for package and API + descriptions. +- Documentation on specific topics can be found in the [Documentation + directory](Documentation/). +- Examples can be found in the [examples directory](examples/). Performance ----------- -See the current benchmarks for some of the languages supported in [this dashboard](https://performance-dot-grpc-testing.appspot.com/explore?dashboard=5652536396611584&widget=490377658&container=1286539696). +Performance benchmark data for grpc-go and other languages is maintained in +[this +dashboard](https://performance-dot-grpc-testing.appspot.com/explore?dashboard=5652536396611584&widget=490377658&container=1286539696). Status ------ -General Availability [Google Cloud Platform Launch Stages](https://cloud.google.com/terms/launch-stages). +General Availability [Google Cloud Platform Launch +Stages](https://cloud.google.com/terms/launch-stages). FAQ --- +#### I/O Timeout Errors + +The `golang.org` domain may be blocked from some countries. `go get` usually +produces an error like the following when this happens: + +``` +$ go get -u google.golang.org/grpc +package google.golang.org/grpc: unrecognized import path "google.golang.org/grpc" (https fetch: Get https://google.golang.org/grpc?go-get=1: dial tcp 216.239.37.1:443: i/o timeout) +``` + +To build Go code, there are several options: + +- Set up a VPN and access google.golang.org through that. + +- Without Go module support: `git clone` the repo manually: + + ``` + git clone https://github.com/grpc/grpc-go.git $GOPATH/src/google.golang.org/grpc + ``` + + You will need to do the same for all of grpc's dependencies in `golang.org`, + e.g. `golang.org/x/net`. + +- With Go module support: it is possible to use the `replace` feature of `go + mod` to create aliases for golang.org packages. In your project's directory: + + ``` + go mod edit -replace=google.golang.org/grpc=github.com/grpc/grpc-go@latest + go mod tidy + go mod vendor + go build -mod=vendor + ``` + + Again, this will need to be done for all transitive dependencies hosted on + golang.org as well. Please refer to [this + issue](https://github.com/golang/go/issues/28652) in the golang repo regarding + this concern. + #### Compiling error, undefined: grpc.SupportPackageIsVersion Please update proto package, gRPC package and rebuild the proto files: diff --git a/vendor/google.golang.org/grpc/balancer.go b/vendor/google.golang.org/grpc/balancer.go index a78e702baee3..a8eb0f476091 100644 --- a/vendor/google.golang.org/grpc/balancer.go +++ b/vendor/google.golang.org/grpc/balancer.go @@ -43,7 +43,7 @@ type Address struct { // BalancerConfig specifies the configurations for Balancer. // -// Deprecated: please use package balancer. +// Deprecated: please use package balancer. May be removed in a future 1.x release. type BalancerConfig struct { // DialCreds is the transport credential the Balancer implementation can // use to dial to a remote load balancer server. The Balancer implementations @@ -57,7 +57,7 @@ type BalancerConfig struct { // BalancerGetOptions configures a Get call. // -// Deprecated: please use package balancer. +// Deprecated: please use package balancer. May be removed in a future 1.x release. type BalancerGetOptions struct { // BlockingWait specifies whether Get should block when there is no // connected address. @@ -66,7 +66,7 @@ type BalancerGetOptions struct { // Balancer chooses network addresses for RPCs. // -// Deprecated: please use package balancer. +// Deprecated: please use package balancer. May be removed in a future 1.x release. type Balancer interface { // Start does the initialization work to bootstrap a Balancer. For example, // this function may start the name resolution and watch the updates. It will @@ -120,7 +120,7 @@ type Balancer interface { // RoundRobin returns a Balancer that selects addresses round-robin. It uses r to watch // the name resolution updates and updates the addresses available correspondingly. // -// Deprecated: please use package balancer/roundrobin. +// Deprecated: please use package balancer/roundrobin. May be removed in a future 1.x release. func RoundRobin(r naming.Resolver) Balancer { return &roundRobin{r: r} } diff --git a/vendor/google.golang.org/grpc/balancer/balancer.go b/vendor/google.golang.org/grpc/balancer/balancer.go index fafede238c13..c266f4ec102c 100644 --- a/vendor/google.golang.org/grpc/balancer/balancer.go +++ b/vendor/google.golang.org/grpc/balancer/balancer.go @@ -22,6 +22,7 @@ package balancer import ( "context" + "encoding/json" "errors" "net" "strings" @@ -31,6 +32,7 @@ import ( "google.golang.org/grpc/internal" "google.golang.org/grpc/metadata" "google.golang.org/grpc/resolver" + "google.golang.org/grpc/serviceconfig" ) var ( @@ -39,7 +41,10 @@ var ( ) // Register registers the balancer builder to the balancer map. b.Name -// (lowercased) will be used as the name registered with this builder. +// (lowercased) will be used as the name registered with this builder. If the +// Builder implements ConfigParser, ParseConfig will be called when new service +// configs are received by the resolver, and the result will be provided to the +// Balancer in UpdateClientConnState. // // NOTE: this function must only be called during initialization time (i.e. in // an init() function), and is not thread-safe. If multiple Balancers are @@ -138,6 +143,8 @@ type ClientConn interface { ResolveNow(resolver.ResolveNowOption) // Target returns the dial target for this ClientConn. + // + // Deprecated: Use the Target field in the BuildOptions instead. Target() string } @@ -155,6 +162,10 @@ type BuildOptions struct { Dialer func(context.Context, string) (net.Conn, error) // ChannelzParentID is the entity parent's channelz unique identification number. ChannelzParentID int64 + // Target contains the parsed address info of the dial target. It is the same resolver.Target as + // passed to the resolver. + // See the documentation for the resolver.Target type for details about what it contains. + Target resolver.Target } // Builder creates a balancer. @@ -166,6 +177,14 @@ type Builder interface { Name() string } +// ConfigParser parses load balancer configs. +type ConfigParser interface { + // ParseConfig parses the JSON load balancer config provided into an + // internal form or returns an error if the config is invalid. For future + // compatibility reasons, unknown fields in the config should be ignored. + ParseConfig(LoadBalancingConfigJSON json.RawMessage) (serviceconfig.LoadBalancingConfig, error) +} + // PickOptions contains addition information for the Pick operation. type PickOptions struct { // FullMethodName is the method name that NewClientStream() is called @@ -264,7 +283,7 @@ type Balancer interface { // non-nil error to gRPC. // // Deprecated: if V2Balancer is implemented by the Balancer, - // UpdateResolverState will be called instead. + // UpdateClientConnState will be called instead. HandleResolvedAddrs([]resolver.Address, error) // Close closes the balancer. The balancer is not required to call // ClientConn.RemoveSubConn for its existing SubConns. @@ -277,14 +296,23 @@ type SubConnState struct { // TODO: add last connection error } +// ClientConnState describes the state of a ClientConn relevant to the +// balancer. +type ClientConnState struct { + ResolverState resolver.State + // The parsed load balancing configuration returned by the builder's + // ParseConfig method, if implemented. + BalancerConfig serviceconfig.LoadBalancingConfig +} + // V2Balancer is defined for documentation purposes. If a Balancer also -// implements V2Balancer, its UpdateResolverState method will be called instead -// of HandleResolvedAddrs and its UpdateSubConnState will be called instead of -// HandleSubConnStateChange. +// implements V2Balancer, its UpdateClientConnState method will be called +// instead of HandleResolvedAddrs and its UpdateSubConnState will be called +// instead of HandleSubConnStateChange. type V2Balancer interface { - // UpdateResolverState is called by gRPC when the state of the resolver + // UpdateClientConnState is called by gRPC when the state of the ClientConn // changes. - UpdateResolverState(resolver.State) + UpdateClientConnState(ClientConnState) // UpdateSubConnState is called by gRPC when the state of a SubConn // changes. UpdateSubConnState(SubConn, SubConnState) diff --git a/vendor/google.golang.org/grpc/balancer/base/balancer.go b/vendor/google.golang.org/grpc/balancer/base/balancer.go index c5a51bd1d992..1af88f0a3f1b 100644 --- a/vendor/google.golang.org/grpc/balancer/base/balancer.go +++ b/vendor/google.golang.org/grpc/balancer/base/balancer.go @@ -70,13 +70,15 @@ func (b *baseBalancer) HandleResolvedAddrs(addrs []resolver.Address, err error) panic("not implemented") } -func (b *baseBalancer) UpdateResolverState(s resolver.State) { - // TODO: handle s.Err (log if not nil) once implemented. - // TODO: handle s.ServiceConfig? - grpclog.Infoln("base.baseBalancer: got new resolver state: ", s) +func (b *baseBalancer) UpdateClientConnState(s balancer.ClientConnState) { + // TODO: handle s.ResolverState.Err (log if not nil) once implemented. + // TODO: handle s.ResolverState.ServiceConfig? + if grpclog.V(2) { + grpclog.Infoln("base.baseBalancer: got new ClientConn state: ", s) + } // addrsSet is the set converted from addrs, it's used for quick lookup of an address. addrsSet := make(map[resolver.Address]struct{}) - for _, a := range s.Addresses { + for _, a := range s.ResolverState.Addresses { addrsSet[a] = struct{}{} if _, ok := b.subConns[a]; !ok { // a is a new address (not existing in b.subConns). @@ -127,10 +129,14 @@ func (b *baseBalancer) HandleSubConnStateChange(sc balancer.SubConn, s connectiv func (b *baseBalancer) UpdateSubConnState(sc balancer.SubConn, state balancer.SubConnState) { s := state.ConnectivityState - grpclog.Infof("base.baseBalancer: handle SubConn state change: %p, %v", sc, s) + if grpclog.V(2) { + grpclog.Infof("base.baseBalancer: handle SubConn state change: %p, %v", sc, s) + } oldS, ok := b.scStates[sc] if !ok { - grpclog.Infof("base.baseBalancer: got state changes for an unknown SubConn: %p, %v", sc, s) + if grpclog.V(2) { + grpclog.Infof("base.baseBalancer: got state changes for an unknown SubConn: %p, %v", sc, s) + } return } b.scStates[sc] = s diff --git a/vendor/google.golang.org/grpc/balancer_conn_wrappers.go b/vendor/google.golang.org/grpc/balancer_conn_wrappers.go index bc965f0acaaa..8df4095ca951 100644 --- a/vendor/google.golang.org/grpc/balancer_conn_wrappers.go +++ b/vendor/google.golang.org/grpc/balancer_conn_wrappers.go @@ -88,7 +88,7 @@ type ccBalancerWrapper struct { cc *ClientConn balancer balancer.Balancer stateChangeQueue *scStateUpdateBuffer - resolverUpdateCh chan *resolver.State + ccUpdateCh chan *balancer.ClientConnState done chan struct{} mu sync.Mutex @@ -99,7 +99,7 @@ func newCCBalancerWrapper(cc *ClientConn, b balancer.Builder, bopts balancer.Bui ccb := &ccBalancerWrapper{ cc: cc, stateChangeQueue: newSCStateUpdateBuffer(), - resolverUpdateCh: make(chan *resolver.State, 1), + ccUpdateCh: make(chan *balancer.ClientConnState, 1), done: make(chan struct{}), subConns: make(map[*acBalancerWrapper]struct{}), } @@ -126,7 +126,7 @@ func (ccb *ccBalancerWrapper) watcher() { } else { ccb.balancer.HandleSubConnStateChange(t.sc, t.state) } - case s := <-ccb.resolverUpdateCh: + case s := <-ccb.ccUpdateCh: select { case <-ccb.done: ccb.balancer.Close() @@ -134,9 +134,9 @@ func (ccb *ccBalancerWrapper) watcher() { default: } if ub, ok := ccb.balancer.(balancer.V2Balancer); ok { - ub.UpdateResolverState(*s) + ub.UpdateClientConnState(*s) } else { - ccb.balancer.HandleResolvedAddrs(s.Addresses, nil) + ccb.balancer.HandleResolvedAddrs(s.ResolverState.Addresses, nil) } case <-ccb.done: } @@ -151,9 +151,11 @@ func (ccb *ccBalancerWrapper) watcher() { for acbw := range scs { ccb.cc.removeAddrConn(acbw.getAddrConn(), errConnDrain) } + ccb.UpdateBalancerState(connectivity.Connecting, nil) return default: } + ccb.cc.firstResolveEvent.Fire() } } @@ -178,9 +180,10 @@ func (ccb *ccBalancerWrapper) handleSubConnStateChange(sc balancer.SubConn, s co }) } -func (ccb *ccBalancerWrapper) updateResolverState(s resolver.State) { +func (ccb *ccBalancerWrapper) updateClientConnState(ccs *balancer.ClientConnState) { if ccb.cc.curBalancerName != grpclbName { // Filter any grpclb addresses since we don't have the grpclb balancer. + s := &ccs.ResolverState for i := 0; i < len(s.Addresses); { if s.Addresses[i].Type == resolver.GRPCLB { copy(s.Addresses[i:], s.Addresses[i+1:]) @@ -191,10 +194,10 @@ func (ccb *ccBalancerWrapper) updateResolverState(s resolver.State) { } } select { - case <-ccb.resolverUpdateCh: + case <-ccb.ccUpdateCh: default: } - ccb.resolverUpdateCh <- &s + ccb.ccUpdateCh <- ccs } func (ccb *ccBalancerWrapper) NewSubConn(addrs []resolver.Address, opts balancer.NewSubConnOptions) (balancer.SubConn, error) { diff --git a/vendor/google.golang.org/grpc/balancer_v1_wrapper.go b/vendor/google.golang.org/grpc/balancer_v1_wrapper.go index 29bda6353dd5..66e9a44ac4da 100644 --- a/vendor/google.golang.org/grpc/balancer_v1_wrapper.go +++ b/vendor/google.golang.org/grpc/balancer_v1_wrapper.go @@ -20,7 +20,6 @@ package grpc import ( "context" - "strings" "sync" "google.golang.org/grpc/balancer" @@ -34,13 +33,7 @@ type balancerWrapperBuilder struct { } func (bwb *balancerWrapperBuilder) Build(cc balancer.ClientConn, opts balancer.BuildOptions) balancer.Balancer { - targetAddr := cc.Target() - targetSplitted := strings.Split(targetAddr, ":///") - if len(targetSplitted) >= 2 { - targetAddr = targetSplitted[1] - } - - bwb.b.Start(targetAddr, BalancerConfig{ + bwb.b.Start(opts.Target.Endpoint, BalancerConfig{ DialCreds: opts.DialCreds, Dialer: opts.Dialer, }) @@ -49,7 +42,7 @@ func (bwb *balancerWrapperBuilder) Build(cc balancer.ClientConn, opts balancer.B balancer: bwb.b, pickfirst: pickfirst, cc: cc, - targetAddr: targetAddr, + targetAddr: opts.Target.Endpoint, startCh: make(chan struct{}), conns: make(map[resolver.Address]balancer.SubConn), connSt: make(map[balancer.SubConn]*scState), @@ -120,7 +113,7 @@ func (bw *balancerWrapper) lbWatcher() { } for addrs := range notifyCh { - grpclog.Infof("balancerWrapper: got update addr from Notify: %v\n", addrs) + grpclog.Infof("balancerWrapper: got update addr from Notify: %v", addrs) if bw.pickfirst { var ( oldA resolver.Address diff --git a/vendor/google.golang.org/grpc/clientconn.go b/vendor/google.golang.org/grpc/clientconn.go index bd2d2b317798..a7643df7d297 100644 --- a/vendor/google.golang.org/grpc/clientconn.go +++ b/vendor/google.golang.org/grpc/clientconn.go @@ -38,13 +38,13 @@ import ( "google.golang.org/grpc/grpclog" "google.golang.org/grpc/internal/backoff" "google.golang.org/grpc/internal/channelz" - "google.golang.org/grpc/internal/envconfig" "google.golang.org/grpc/internal/grpcsync" "google.golang.org/grpc/internal/transport" "google.golang.org/grpc/keepalive" "google.golang.org/grpc/resolver" _ "google.golang.org/grpc/resolver/dns" // To register dns resolver. _ "google.golang.org/grpc/resolver/passthrough" // To register passthrough resolver. + "google.golang.org/grpc/serviceconfig" "google.golang.org/grpc/status" ) @@ -137,6 +137,9 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn * opt.apply(&cc.dopts) } + chainUnaryClientInterceptors(cc) + chainStreamClientInterceptors(cc) + defer func() { if err != nil { cc.Close() @@ -290,6 +293,7 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn * CredsBundle: cc.dopts.copts.CredsBundle, Dialer: cc.dopts.copts.Dialer, ChannelzParentID: cc.channelzID, + Target: cc.parsedTarget, } // Build the resolver. @@ -327,6 +331,68 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn * return cc, nil } +// chainUnaryClientInterceptors chains all unary client interceptors into one. +func chainUnaryClientInterceptors(cc *ClientConn) { + interceptors := cc.dopts.chainUnaryInts + // Prepend dopts.unaryInt to the chaining interceptors if it exists, since unaryInt will + // be executed before any other chained interceptors. + if cc.dopts.unaryInt != nil { + interceptors = append([]UnaryClientInterceptor{cc.dopts.unaryInt}, interceptors...) + } + var chainedInt UnaryClientInterceptor + if len(interceptors) == 0 { + chainedInt = nil + } else if len(interceptors) == 1 { + chainedInt = interceptors[0] + } else { + chainedInt = func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, invoker UnaryInvoker, opts ...CallOption) error { + return interceptors[0](ctx, method, req, reply, cc, getChainUnaryInvoker(interceptors, 0, invoker), opts...) + } + } + cc.dopts.unaryInt = chainedInt +} + +// getChainUnaryInvoker recursively generate the chained unary invoker. +func getChainUnaryInvoker(interceptors []UnaryClientInterceptor, curr int, finalInvoker UnaryInvoker) UnaryInvoker { + if curr == len(interceptors)-1 { + return finalInvoker + } + return func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, opts ...CallOption) error { + return interceptors[curr+1](ctx, method, req, reply, cc, getChainUnaryInvoker(interceptors, curr+1, finalInvoker), opts...) + } +} + +// chainStreamClientInterceptors chains all stream client interceptors into one. +func chainStreamClientInterceptors(cc *ClientConn) { + interceptors := cc.dopts.chainStreamInts + // Prepend dopts.streamInt to the chaining interceptors if it exists, since streamInt will + // be executed before any other chained interceptors. + if cc.dopts.streamInt != nil { + interceptors = append([]StreamClientInterceptor{cc.dopts.streamInt}, interceptors...) + } + var chainedInt StreamClientInterceptor + if len(interceptors) == 0 { + chainedInt = nil + } else if len(interceptors) == 1 { + chainedInt = interceptors[0] + } else { + chainedInt = func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, streamer Streamer, opts ...CallOption) (ClientStream, error) { + return interceptors[0](ctx, desc, cc, method, getChainStreamer(interceptors, 0, streamer), opts...) + } + } + cc.dopts.streamInt = chainedInt +} + +// getChainStreamer recursively generate the chained client stream constructor. +func getChainStreamer(interceptors []StreamClientInterceptor, curr int, finalStreamer Streamer) Streamer { + if curr == len(interceptors)-1 { + return finalStreamer + } + return func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (ClientStream, error) { + return interceptors[curr+1](ctx, desc, cc, method, getChainStreamer(interceptors, curr+1, finalStreamer), opts...) + } +} + // connectivityStateManager keeps the connectivity.State of ClientConn. // This struct will eventually be exported so the balancers can access it. type connectivityStateManager struct { @@ -466,24 +532,6 @@ func (cc *ClientConn) waitForResolvedAddrs(ctx context.Context) error { } } -// gRPC should resort to default service config when: -// * resolver service config is disabled -// * or, resolver does not return a service config or returns an invalid one. -func (cc *ClientConn) fallbackToDefaultServiceConfig(sc string) bool { - if cc.dopts.disableServiceConfig { - return true - } - // The logic below is temporary, will be removed once we change the resolver.State ServiceConfig field type. - // Right now, we assume that empty service config string means resolver does not return a config. - if sc == "" { - return true - } - // TODO: the logic below is temporary. Once we finish the logic to validate service config - // in resolver, we will replace the logic below. - _, err := parseServiceConfig(sc) - return err != nil -} - func (cc *ClientConn) updateResolverState(s resolver.State) error { cc.mu.Lock() defer cc.mu.Unlock() @@ -494,54 +542,47 @@ func (cc *ClientConn) updateResolverState(s resolver.State) error { return nil } - if cc.fallbackToDefaultServiceConfig(s.ServiceConfig) { + if cc.dopts.disableServiceConfig || s.ServiceConfig == nil { if cc.dopts.defaultServiceConfig != nil && cc.sc == nil { cc.applyServiceConfig(cc.dopts.defaultServiceConfig) } - } else { - // TODO: the parsing logic below will be moved inside resolver. - sc, err := parseServiceConfig(s.ServiceConfig) - if err != nil { - return err - } - if cc.sc == nil || cc.sc.rawJSONString != s.ServiceConfig { - cc.applyServiceConfig(sc) - } - } - - // update the service config that will be sent to balancer. - if cc.sc != nil { - s.ServiceConfig = cc.sc.rawJSONString + } else if sc, ok := s.ServiceConfig.(*ServiceConfig); ok { + cc.applyServiceConfig(sc) } + var balCfg serviceconfig.LoadBalancingConfig if cc.dopts.balancerBuilder == nil { // Only look at balancer types and switch balancer if balancer dial // option is not set. - var isGRPCLB bool - for _, a := range s.Addresses { - if a.Type == resolver.GRPCLB { - isGRPCLB = true - break - } - } var newBalancerName string - // TODO: use new loadBalancerConfig field with appropriate priority. - if isGRPCLB { - newBalancerName = grpclbName - } else if cc.sc != nil && cc.sc.LB != nil { - newBalancerName = *cc.sc.LB + if cc.sc != nil && cc.sc.lbConfig != nil { + newBalancerName = cc.sc.lbConfig.name + balCfg = cc.sc.lbConfig.cfg } else { - newBalancerName = PickFirstBalancerName + var isGRPCLB bool + for _, a := range s.Addresses { + if a.Type == resolver.GRPCLB { + isGRPCLB = true + break + } + } + if isGRPCLB { + newBalancerName = grpclbName + } else if cc.sc != nil && cc.sc.LB != nil { + newBalancerName = *cc.sc.LB + } else { + newBalancerName = PickFirstBalancerName + } } cc.switchBalancer(newBalancerName) } else if cc.balancerWrapper == nil { // Balancer dial option was set, and this is the first time handling // resolved addresses. Build a balancer with dopts.balancerBuilder. + cc.curBalancerName = cc.dopts.balancerBuilder.Name() cc.balancerWrapper = newCCBalancerWrapper(cc, cc.dopts.balancerBuilder, cc.balancerBuildOpts) } - cc.balancerWrapper.updateResolverState(s) - cc.firstResolveEvent.Fire() + cc.balancerWrapper.updateClientConnState(&balancer.ClientConnState{ResolverState: s, BalancerConfig: balCfg}) return nil } @@ -554,7 +595,7 @@ func (cc *ClientConn) updateResolverState(s resolver.State) error { // // Caller must hold cc.mu. func (cc *ClientConn) switchBalancer(name string) { - if strings.ToLower(cc.curBalancerName) == strings.ToLower(name) { + if strings.EqualFold(cc.curBalancerName, name) { return } @@ -693,6 +734,8 @@ func (ac *addrConn) connect() error { ac.mu.Unlock() return nil } + // Update connectivity state within the lock to prevent subsequent or + // concurrent calls from resetting the transport more than once. ac.updateConnectivityState(connectivity.Connecting) ac.mu.Unlock() @@ -703,7 +746,16 @@ func (ac *addrConn) connect() error { // tryUpdateAddrs tries to update ac.addrs with the new addresses list. // -// It checks whether current connected address of ac is in the new addrs list. +// If ac is Connecting, it returns false. The caller should tear down the ac and +// create a new one. Note that the backoff will be reset when this happens. +// +// If ac is TransientFailure, it updates ac.addrs and returns true. The updated +// addresses will be picked up by retry in the next iteration after backoff. +// +// If ac is Shutdown or Idle, it updates ac.addrs and returns true. +// +// If ac is Ready, it checks whether current connected address of ac is in the +// new addrs list. // - If true, it updates ac.addrs and returns true. The ac will keep using // the existing connection. // - If false, it does nothing and returns false. @@ -711,17 +763,18 @@ func (ac *addrConn) tryUpdateAddrs(addrs []resolver.Address) bool { ac.mu.Lock() defer ac.mu.Unlock() grpclog.Infof("addrConn: tryUpdateAddrs curAddr: %v, addrs: %v", ac.curAddr, addrs) - if ac.state == connectivity.Shutdown { + if ac.state == connectivity.Shutdown || + ac.state == connectivity.TransientFailure || + ac.state == connectivity.Idle { ac.addrs = addrs return true } - // Unless we're busy reconnecting already, let's reconnect from the top of - // the list. - if ac.state != connectivity.Ready { + if ac.state == connectivity.Connecting { return false } + // ac.state is Ready, try to find the connected address. var curAddrFound bool for _, a := range addrs { if reflect.DeepEqual(ac.curAddr, a) { @@ -970,6 +1023,9 @@ func (ac *addrConn) resetTransport() { // The spec doesn't mention what should be done for multiple addresses. // https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md#proposed-backoff-algorithm connectDeadline := time.Now().Add(dialDuration) + + ac.updateConnectivityState(connectivity.Connecting) + ac.transport = nil ac.mu.Unlock() newTr, addr, reconnect, err := ac.tryAllAddrs(addrs, connectDeadline) @@ -1004,55 +1060,32 @@ func (ac *addrConn) resetTransport() { ac.mu.Lock() if ac.state == connectivity.Shutdown { - newTr.Close() ac.mu.Unlock() + newTr.Close() return } ac.curAddr = addr ac.transport = newTr ac.backoffIdx = 0 - healthCheckConfig := ac.cc.healthCheckConfig() - // LB channel health checking is only enabled when all the four requirements below are met: - // 1. it is not disabled by the user with the WithDisableHealthCheck DialOption, - // 2. the internal.HealthCheckFunc is set by importing the grpc/healthcheck package, - // 3. a service config with non-empty healthCheckConfig field is provided, - // 4. the current load balancer allows it. hctx, hcancel := context.WithCancel(ac.ctx) - healthcheckManagingState := false - if !ac.cc.dopts.disableHealthCheck && healthCheckConfig != nil && ac.scopts.HealthCheckEnabled { - if ac.cc.dopts.healthCheckFunc == nil { - // TODO: add a link to the health check doc in the error message. - grpclog.Error("the client side LB channel health check function has not been set.") - } else { - // TODO(deklerk) refactor to just return transport - go ac.startHealthCheck(hctx, newTr, addr, healthCheckConfig.ServiceName) - healthcheckManagingState = true - } - } - if !healthcheckManagingState { - ac.updateConnectivityState(connectivity.Ready) - } + ac.startHealthCheck(hctx) ac.mu.Unlock() // Block until the created transport is down. And when this happens, // we restart from the top of the addr list. <-reconnect.Done() hcancel() - - // Need to reconnect after a READY, the addrConn enters - // TRANSIENT_FAILURE. + // restart connecting - the top of the loop will set state to + // CONNECTING. This is against the current connectivity semantics doc, + // however it allows for graceful behavior for RPCs not yet dispatched + // - unfortunate timing would otherwise lead to the RPC failing even + // though the TRANSIENT_FAILURE state (called for by the doc) would be + // instantaneous. // - // This will set addrConn to TRANSIENT_FAILURE for a very short period - // of time, and turns CONNECTING. It seems reasonable to skip this, but - // READY-CONNECTING is not a valid transition. - ac.mu.Lock() - if ac.state == connectivity.Shutdown { - ac.mu.Unlock() - return - } - ac.updateConnectivityState(connectivity.TransientFailure) - ac.mu.Unlock() + // Ideally we should transition to Idle here and block until there is + // RPC activity that leads to the balancer requesting a reconnect of + // the associated SubConn. } } @@ -1066,8 +1099,6 @@ func (ac *addrConn) tryAllAddrs(addrs []resolver.Address, connectDeadline time.T ac.mu.Unlock() return nil, resolver.Address{}, nil, errConnClosing } - ac.updateConnectivityState(connectivity.Connecting) - ac.transport = nil ac.cc.mu.RLock() ac.dopts.copts.KeepaliveParams = ac.cc.mkp @@ -1111,14 +1142,35 @@ func (ac *addrConn) createTransport(addr resolver.Address, copts transport.Conne Authority: ac.cc.authority, } + once := sync.Once{} onGoAway := func(r transport.GoAwayReason) { ac.mu.Lock() ac.adjustParams(r) + once.Do(func() { + if ac.state == connectivity.Ready { + // Prevent this SubConn from being used for new RPCs by setting its + // state to Connecting. + // + // TODO: this should be Idle when grpc-go properly supports it. + ac.updateConnectivityState(connectivity.Connecting) + } + }) ac.mu.Unlock() reconnect.Fire() } onClose := func() { + ac.mu.Lock() + once.Do(func() { + if ac.state == connectivity.Ready { + // Prevent this SubConn from being used for new RPCs by setting its + // state to Connecting. + // + // TODO: this should be Idle when grpc-go properly supports it. + ac.updateConnectivityState(connectivity.Connecting) + } + }) + ac.mu.Unlock() close(onCloseCalled) reconnect.Fire() } @@ -1140,60 +1192,99 @@ func (ac *addrConn) createTransport(addr resolver.Address, copts transport.Conne return nil, nil, err } - if ac.dopts.reqHandshake == envconfig.RequireHandshakeOn { - select { - case <-time.After(connectDeadline.Sub(time.Now())): - // We didn't get the preface in time. - newTr.Close() - grpclog.Warningf("grpc: addrConn.createTransport failed to connect to %v: didn't receive server preface in time. Reconnecting...", addr) - return nil, nil, errors.New("timed out waiting for server handshake") - case <-prefaceReceived: - // We got the preface - huzzah! things are good. - case <-onCloseCalled: - // The transport has already closed - noop. - return nil, nil, errors.New("connection closed") - // TODO(deklerk) this should bail on ac.ctx.Done(). Add a test and fix. - } + select { + case <-time.After(connectDeadline.Sub(time.Now())): + // We didn't get the preface in time. + newTr.Close() + grpclog.Warningf("grpc: addrConn.createTransport failed to connect to %v: didn't receive server preface in time. Reconnecting...", addr) + return nil, nil, errors.New("timed out waiting for server handshake") + case <-prefaceReceived: + // We got the preface - huzzah! things are good. + case <-onCloseCalled: + // The transport has already closed - noop. + return nil, nil, errors.New("connection closed") + // TODO(deklerk) this should bail on ac.ctx.Done(). Add a test and fix. } return newTr, reconnect, nil } -func (ac *addrConn) startHealthCheck(ctx context.Context, newTr transport.ClientTransport, addr resolver.Address, serviceName string) { - // Set up the health check helper functions - newStream := func() (interface{}, error) { - return ac.newClientStream(ctx, &StreamDesc{ServerStreams: true}, "/grpc.health.v1.Health/Watch", newTr) +// startHealthCheck starts the health checking stream (RPC) to watch the health +// stats of this connection if health checking is requested and configured. +// +// LB channel health checking is enabled when all requirements below are met: +// 1. it is not disabled by the user with the WithDisableHealthCheck DialOption +// 2. internal.HealthCheckFunc is set by importing the grpc/healthcheck package +// 3. a service config with non-empty healthCheckConfig field is provided +// 4. the load balancer requests it +// +// It sets addrConn to READY if the health checking stream is not started. +// +// Caller must hold ac.mu. +func (ac *addrConn) startHealthCheck(ctx context.Context) { + var healthcheckManagingState bool + defer func() { + if !healthcheckManagingState { + ac.updateConnectivityState(connectivity.Ready) + } + }() + + if ac.cc.dopts.disableHealthCheck { + return + } + healthCheckConfig := ac.cc.healthCheckConfig() + if healthCheckConfig == nil { + return + } + if !ac.scopts.HealthCheckEnabled { + return + } + healthCheckFunc := ac.cc.dopts.healthCheckFunc + if healthCheckFunc == nil { + // The health package is not imported to set health check function. + // + // TODO: add a link to the health check doc in the error message. + grpclog.Error("Health check is requested but health check function is not set.") + return + } + + healthcheckManagingState = true + + // Set up the health check helper functions. + currentTr := ac.transport + newStream := func(method string) (interface{}, error) { + ac.mu.Lock() + if ac.transport != currentTr { + ac.mu.Unlock() + return nil, status.Error(codes.Canceled, "the provided transport is no longer valid to use") + } + ac.mu.Unlock() + return newNonRetryClientStream(ctx, &StreamDesc{ServerStreams: true}, method, currentTr, ac) } - firstReady := true - reportHealth := func(ok bool) { + setConnectivityState := func(s connectivity.State) { ac.mu.Lock() defer ac.mu.Unlock() - if ac.transport != newTr { + if ac.transport != currentTr { return } - if ok { - if firstReady { - firstReady = false - ac.curAddr = addr - } - ac.updateConnectivityState(connectivity.Ready) - } else { - ac.updateConnectivityState(connectivity.TransientFailure) - } + ac.updateConnectivityState(s) } - err := ac.cc.dopts.healthCheckFunc(ctx, newStream, reportHealth, serviceName) - if err != nil { - if status.Code(err) == codes.Unimplemented { - if channelz.IsOn() { - channelz.AddTraceEvent(ac.channelzID, &channelz.TraceEventDesc{ - Desc: "Subchannel health check is unimplemented at server side, thus health check is disabled", - Severity: channelz.CtError, - }) + // Start the health checking stream. + go func() { + err := ac.cc.dopts.healthCheckFunc(ctx, newStream, setConnectivityState, healthCheckConfig.ServiceName) + if err != nil { + if status.Code(err) == codes.Unimplemented { + if channelz.IsOn() { + channelz.AddTraceEvent(ac.channelzID, &channelz.TraceEventDesc{ + Desc: "Subchannel health check is unimplemented at server side, thus health check is disabled", + Severity: channelz.CtError, + }) + } + grpclog.Error("Subchannel health check is unimplemented at server side, thus health check is disabled") + } else { + grpclog.Errorf("HealthCheckFunc exits with unexpected error %v", err) } - grpclog.Error("Subchannel health check is unimplemented at server side, thus health check is disabled") - } else { - grpclog.Errorf("HealthCheckFunc exits with unexpected error %v", err) } - } + }() } func (ac *addrConn) resetConnectBackoff() { diff --git a/vendor/google.golang.org/grpc/codes/codes.go b/vendor/google.golang.org/grpc/codes/codes.go index d9b9d5782e08..02738839dd98 100644 --- a/vendor/google.golang.org/grpc/codes/codes.go +++ b/vendor/google.golang.org/grpc/codes/codes.go @@ -132,7 +132,8 @@ const ( // Unavailable indicates the service is currently unavailable. // This is a most likely a transient condition and may be corrected - // by retrying with a backoff. + // by retrying with a backoff. Note that it is not always safe to retry + // non-idempotent operations. // // See litmus test above for deciding between FailedPrecondition, // Aborted, and Unavailable. diff --git a/vendor/google.golang.org/grpc/credentials/credentials.go b/vendor/google.golang.org/grpc/credentials/credentials.go index 88aff94596a1..8ea3d4a1dc28 100644 --- a/vendor/google.golang.org/grpc/credentials/credentials.go +++ b/vendor/google.golang.org/grpc/credentials/credentials.go @@ -278,24 +278,22 @@ type ChannelzSecurityValue interface { // TLSChannelzSecurityValue defines the struct that TLS protocol should return // from GetSecurityValue(), containing security info like cipher and certificate used. type TLSChannelzSecurityValue struct { + ChannelzSecurityValue StandardName string LocalCertificate []byte RemoteCertificate []byte } -func (*TLSChannelzSecurityValue) isChannelzSecurityValue() {} - // OtherChannelzSecurityValue defines the struct that non-TLS protocol should return // from GetSecurityValue(), which contains protocol specific security info. Note // the Value field will be sent to users of channelz requesting channel info, and // thus sensitive info should better be avoided. type OtherChannelzSecurityValue struct { + ChannelzSecurityValue Name string Value proto.Message } -func (*OtherChannelzSecurityValue) isChannelzSecurityValue() {} - var cipherSuiteLookup = map[uint16]string{ tls.TLS_RSA_WITH_RC4_128_SHA: "TLS_RSA_WITH_RC4_128_SHA", tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA: "TLS_RSA_WITH_3DES_EDE_CBC_SHA", diff --git a/vendor/google.golang.org/grpc/dialoptions.go b/vendor/google.golang.org/grpc/dialoptions.go index e114fecbb7b4..e8f34d0d6eaa 100644 --- a/vendor/google.golang.org/grpc/dialoptions.go +++ b/vendor/google.golang.org/grpc/dialoptions.go @@ -39,8 +39,12 @@ import ( // dialOptions configure a Dial call. dialOptions are set by the DialOption // values passed to Dial. type dialOptions struct { - unaryInt UnaryClientInterceptor - streamInt StreamClientInterceptor + unaryInt UnaryClientInterceptor + streamInt StreamClientInterceptor + + chainUnaryInts []UnaryClientInterceptor + chainStreamInts []StreamClientInterceptor + cp Compressor dc Decompressor bs backoff.Strategy @@ -56,7 +60,6 @@ type dialOptions struct { balancerBuilder balancer.Builder // This is to support grpclb. resolverBuilder resolver.Builder - reqHandshake envconfig.RequireHandshakeSetting channelzParentID int64 disableServiceConfig bool disableRetry bool @@ -96,17 +99,6 @@ func newFuncDialOption(f func(*dialOptions)) *funcDialOption { } } -// WithWaitForHandshake blocks until the initial settings frame is received from -// the server before assigning RPCs to the connection. -// -// Deprecated: this is the default behavior, and this option will be removed -// after the 1.18 release. -func WithWaitForHandshake() DialOption { - return newFuncDialOption(func(o *dialOptions) { - o.reqHandshake = envconfig.RequireHandshakeOn - }) -} - // WithWriteBufferSize determines how much data can be batched before doing a // write on the wire. The corresponding memory allocation for this buffer will // be twice the size to keep syscalls low. The default value for this buffer is @@ -152,7 +144,8 @@ func WithInitialConnWindowSize(s int32) DialOption { // WithMaxMsgSize returns a DialOption which sets the maximum message size the // client can receive. // -// Deprecated: use WithDefaultCallOptions(MaxCallRecvMsgSize(s)) instead. +// Deprecated: use WithDefaultCallOptions(MaxCallRecvMsgSize(s)) instead. Will +// be supported throughout 1.x. func WithMaxMsgSize(s int) DialOption { return WithDefaultCallOptions(MaxCallRecvMsgSize(s)) } @@ -168,7 +161,8 @@ func WithDefaultCallOptions(cos ...CallOption) DialOption { // WithCodec returns a DialOption which sets a codec for message marshaling and // unmarshaling. // -// Deprecated: use WithDefaultCallOptions(ForceCodec(_)) instead. +// Deprecated: use WithDefaultCallOptions(ForceCodec(_)) instead. Will be +// supported throughout 1.x. func WithCodec(c Codec) DialOption { return WithDefaultCallOptions(CallCustomCodec(c)) } @@ -177,7 +171,7 @@ func WithCodec(c Codec) DialOption { // message compression. It has lower priority than the compressor set by the // UseCompressor CallOption. // -// Deprecated: use UseCompressor instead. +// Deprecated: use UseCompressor instead. Will be supported throughout 1.x. func WithCompressor(cp Compressor) DialOption { return newFuncDialOption(func(o *dialOptions) { o.cp = cp @@ -192,7 +186,8 @@ func WithCompressor(cp Compressor) DialOption { // message. If no compressor is registered for the encoding, an Unimplemented // status error will be returned. // -// Deprecated: use encoding.RegisterCompressor instead. +// Deprecated: use encoding.RegisterCompressor instead. Will be supported +// throughout 1.x. func WithDecompressor(dc Decompressor) DialOption { return newFuncDialOption(func(o *dialOptions) { o.dc = dc @@ -203,7 +198,7 @@ func WithDecompressor(dc Decompressor) DialOption { // Name resolver will be ignored if this DialOption is specified. // // Deprecated: use the new balancer APIs in balancer package and -// WithBalancerName. +// WithBalancerName. Will be removed in a future 1.x release. func WithBalancer(b Balancer) DialOption { return newFuncDialOption(func(o *dialOptions) { o.balancerBuilder = &balancerWrapperBuilder{ @@ -219,7 +214,8 @@ func WithBalancer(b Balancer) DialOption { // The balancer cannot be overridden by balancer option specified by service // config. // -// This is an EXPERIMENTAL API. +// Deprecated: use WithDefaultServiceConfig and WithDisableServiceConfig +// instead. Will be removed in a future 1.x release. func WithBalancerName(balancerName string) DialOption { builder := balancer.Get(balancerName) if builder == nil { @@ -240,9 +236,10 @@ func withResolverBuilder(b resolver.Builder) DialOption { // WithServiceConfig returns a DialOption which has a channel to read the // service configuration. // -// Deprecated: service config should be received through name resolver, as -// specified here. -// https://github.com/grpc/grpc/blob/master/doc/service_config.md +// Deprecated: service config should be received through name resolver or via +// WithDefaultServiceConfig, as specified at +// https://github.com/grpc/grpc/blob/master/doc/service_config.md. Will be +// removed in a future 1.x release. func WithServiceConfig(c <-chan ServiceConfig) DialOption { return newFuncDialOption(func(o *dialOptions) { o.scChan = c @@ -325,7 +322,8 @@ func WithCredentialsBundle(b credentials.Bundle) DialOption { // WithTimeout returns a DialOption that configures a timeout for dialing a // ClientConn initially. This is valid if and only if WithBlock() is present. // -// Deprecated: use DialContext and context.WithTimeout instead. +// Deprecated: use DialContext and context.WithTimeout instead. Will be +// supported throughout 1.x. func WithTimeout(d time.Duration) DialOption { return newFuncDialOption(func(o *dialOptions) { o.timeout = d @@ -352,7 +350,8 @@ func init() { // is returned by f, gRPC checks the error's Temporary() method to decide if it // should try to reconnect to the network address. // -// Deprecated: use WithContextDialer instead +// Deprecated: use WithContextDialer instead. Will be supported throughout +// 1.x. func WithDialer(f func(string, time.Duration) (net.Conn, error)) DialOption { return WithContextDialer( func(ctx context.Context, addr string) (net.Conn, error) { @@ -414,6 +413,17 @@ func WithUnaryInterceptor(f UnaryClientInterceptor) DialOption { }) } +// WithChainUnaryInterceptor returns a DialOption that specifies the chained +// interceptor for unary RPCs. The first interceptor will be the outer most, +// while the last interceptor will be the inner most wrapper around the real call. +// All interceptors added by this method will be chained, and the interceptor +// defined by WithUnaryInterceptor will always be prepended to the chain. +func WithChainUnaryInterceptor(interceptors ...UnaryClientInterceptor) DialOption { + return newFuncDialOption(func(o *dialOptions) { + o.chainUnaryInts = append(o.chainUnaryInts, interceptors...) + }) +} + // WithStreamInterceptor returns a DialOption that specifies the interceptor for // streaming RPCs. func WithStreamInterceptor(f StreamClientInterceptor) DialOption { @@ -422,6 +432,17 @@ func WithStreamInterceptor(f StreamClientInterceptor) DialOption { }) } +// WithChainStreamInterceptor returns a DialOption that specifies the chained +// interceptor for unary RPCs. The first interceptor will be the outer most, +// while the last interceptor will be the inner most wrapper around the real call. +// All interceptors added by this method will be chained, and the interceptor +// defined by WithStreamInterceptor will always be prepended to the chain. +func WithChainStreamInterceptor(interceptors ...StreamClientInterceptor) DialOption { + return newFuncDialOption(func(o *dialOptions) { + o.chainStreamInts = append(o.chainStreamInts, interceptors...) + }) +} + // WithAuthority returns a DialOption that specifies the value to be used as the // :authority pseudo-header. This value only works with WithInsecure and has no // effect if TransportCredentials are present. @@ -440,12 +461,12 @@ func WithChannelzParentID(id int64) DialOption { }) } -// WithDisableServiceConfig returns a DialOption that causes grpc to ignore any +// WithDisableServiceConfig returns a DialOption that causes gRPC to ignore any // service config provided by the resolver and provides a hint to the resolver // to not fetch service configs. // -// Note that, this dial option only disables service config from resolver. If -// default service config is provided, grpc will use the default service config. +// Note that this dial option only disables service config from resolver. If +// default service config is provided, gRPC will use the default service config. func WithDisableServiceConfig() DialOption { return newFuncDialOption(func(o *dialOptions) { o.disableServiceConfig = true @@ -454,8 +475,10 @@ func WithDisableServiceConfig() DialOption { // WithDefaultServiceConfig returns a DialOption that configures the default // service config, which will be used in cases where: -// 1. WithDisableServiceConfig is called. -// 2. Resolver does not return service config or if the resolver gets and invalid config. +// +// 1. WithDisableServiceConfig is also used. +// 2. Resolver does not return a service config or if the resolver returns an +// invalid service config. // // This API is EXPERIMENTAL. func WithDefaultServiceConfig(s string) DialOption { @@ -511,7 +534,6 @@ func withHealthCheckFunc(f internal.HealthChecker) DialOption { func defaultDialOptions() dialOptions { return dialOptions{ disableRetry: !envconfig.Retry, - reqHandshake: envconfig.RequireHandshake, healthCheckFunc: internal.HealthCheckFunc, copts: transport.ConnectOptions{ WriteBufferSize: defaultWriteBufSize, diff --git a/vendor/google.golang.org/grpc/go.mod b/vendor/google.golang.org/grpc/go.mod index 9f3ef3a539c6..c1a8340c5bae 100644 --- a/vendor/google.golang.org/grpc/go.mod +++ b/vendor/google.golang.org/grpc/go.mod @@ -7,13 +7,13 @@ require ( github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b github.com/golang/mock v1.1.1 github.com/golang/protobuf v1.2.0 + github.com/google/go-cmp v0.2.0 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3 golang.org/x/net v0.0.0-20190311183353-d8887717615a golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be - golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f // indirect golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a - golang.org/x/tools v0.0.0-20190311212946-11955173bddd + golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135 google.golang.org/appengine v1.1.0 // indirect google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8 - honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099 + honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc ) diff --git a/vendor/google.golang.org/grpc/health/client.go b/vendor/google.golang.org/grpc/health/client.go index e15f04c229c4..b43746e616cf 100644 --- a/vendor/google.golang.org/grpc/health/client.go +++ b/vendor/google.golang.org/grpc/health/client.go @@ -26,6 +26,7 @@ import ( "google.golang.org/grpc" "google.golang.org/grpc/codes" + "google.golang.org/grpc/connectivity" healthpb "google.golang.org/grpc/health/grpc_health_v1" "google.golang.org/grpc/internal" "google.golang.org/grpc/internal/backoff" @@ -51,7 +52,11 @@ func init() { internal.HealthCheckFunc = clientHealthCheck } -func clientHealthCheck(ctx context.Context, newStream func() (interface{}, error), reportHealth func(bool), service string) error { +const healthCheckMethod = "/grpc.health.v1.Health/Watch" + +// This function implements the protocol defined at: +// https://github.com/grpc/grpc/blob/master/doc/health-checking.md +func clientHealthCheck(ctx context.Context, newStream func(string) (interface{}, error), setConnectivityState func(connectivity.State), service string) error { tryCnt := 0 retryConnection: @@ -65,7 +70,8 @@ retryConnection: if ctx.Err() != nil { return nil } - rawS, err := newStream() + setConnectivityState(connectivity.Connecting) + rawS, err := newStream(healthCheckMethod) if err != nil { continue retryConnection } @@ -73,7 +79,7 @@ retryConnection: s, ok := rawS.(grpc.ClientStream) // Ideally, this should never happen. But if it happens, the server is marked as healthy for LBing purposes. if !ok { - reportHealth(true) + setConnectivityState(connectivity.Ready) return fmt.Errorf("newStream returned %v (type %T); want grpc.ClientStream", rawS, rawS) } @@ -89,19 +95,23 @@ retryConnection: // Reports healthy for the LBing purposes if health check is not implemented in the server. if status.Code(err) == codes.Unimplemented { - reportHealth(true) + setConnectivityState(connectivity.Ready) return err } // Reports unhealthy if server's Watch method gives an error other than UNIMPLEMENTED. if err != nil { - reportHealth(false) + setConnectivityState(connectivity.TransientFailure) continue retryConnection } // As a message has been received, removes the need for backoff for the next retry by reseting the try count. tryCnt = 0 - reportHealth(resp.Status == healthpb.HealthCheckResponse_SERVING) + if resp.Status == healthpb.HealthCheckResponse_SERVING { + setConnectivityState(connectivity.Ready) + } else { + setConnectivityState(connectivity.TransientFailure) + } } } } diff --git a/vendor/google.golang.org/grpc/internal/channelz/funcs.go b/vendor/google.golang.org/grpc/internal/channelz/funcs.go index 041520d35199..f0744f9937e9 100644 --- a/vendor/google.golang.org/grpc/internal/channelz/funcs.go +++ b/vendor/google.golang.org/grpc/internal/channelz/funcs.go @@ -24,6 +24,7 @@ package channelz import ( + "fmt" "sort" "sync" "sync/atomic" @@ -95,9 +96,14 @@ func (d *dbWrapper) get() *channelMap { // NewChannelzStorage initializes channelz data storage and id generator. // +// This function returns a cleanup function to wait for all channelz state to be reset by the +// grpc goroutines when those entities get closed. By using this cleanup function, we make sure tests +// don't mess up each other, i.e. lingering goroutine from previous test doing entity removal happen +// to remove some entity just register by the new test, since the id space is the same. +// // Note: This function is exported for testing purpose only. User should not call // it in most cases. -func NewChannelzStorage() { +func NewChannelzStorage() (cleanup func() error) { db.set(&channelMap{ topLevelChannels: make(map[int64]struct{}), channels: make(map[int64]*channel), @@ -107,6 +113,28 @@ func NewChannelzStorage() { subChannels: make(map[int64]*subChannel), }) idGen.reset() + return func() error { + var err error + cm := db.get() + if cm == nil { + return nil + } + for i := 0; i < 1000; i++ { + cm.mu.Lock() + if len(cm.topLevelChannels) == 0 && len(cm.servers) == 0 && len(cm.channels) == 0 && len(cm.subChannels) == 0 && len(cm.listenSockets) == 0 && len(cm.normalSockets) == 0 { + cm.mu.Unlock() + // all things stored in the channelz map have been cleared. + return nil + } + cm.mu.Unlock() + time.Sleep(10 * time.Millisecond) + } + + cm.mu.Lock() + err = fmt.Errorf("after 10s the channelz map has not been cleaned up yet, topchannels: %d, servers: %d, channels: %d, subchannels: %d, listen sockets: %d, normal sockets: %d", len(cm.topLevelChannels), len(cm.servers), len(cm.channels), len(cm.subChannels), len(cm.listenSockets), len(cm.normalSockets)) + cm.mu.Unlock() + return err + } } // GetTopChannels returns a slice of top channel's ChannelMetric, along with a diff --git a/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go b/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go index 11be7cd08c50..3ee8740f1f93 100644 --- a/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go +++ b/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go @@ -25,40 +25,11 @@ import ( ) const ( - prefix = "GRPC_GO_" - retryStr = prefix + "RETRY" - requireHandshakeStr = prefix + "REQUIRE_HANDSHAKE" -) - -// RequireHandshakeSetting describes the settings for handshaking. -type RequireHandshakeSetting int - -const ( - // RequireHandshakeOn indicates to wait for handshake before considering a - // connection ready/successful. - RequireHandshakeOn RequireHandshakeSetting = iota - // RequireHandshakeOff indicates to not wait for handshake before - // considering a connection ready/successful. - RequireHandshakeOff + prefix = "GRPC_GO_" + retryStr = prefix + "RETRY" ) var ( // Retry is set if retry is explicitly enabled via "GRPC_GO_RETRY=on". Retry = strings.EqualFold(os.Getenv(retryStr), "on") - // RequireHandshake is set based upon the GRPC_GO_REQUIRE_HANDSHAKE - // environment variable. - // - // Will be removed after the 1.18 release. - RequireHandshake = RequireHandshakeOn ) - -func init() { - switch strings.ToLower(os.Getenv(requireHandshakeStr)) { - case "on": - fallthrough - default: - RequireHandshake = RequireHandshakeOn - case "off": - RequireHandshake = RequireHandshakeOff - } -} diff --git a/vendor/google.golang.org/grpc/internal/internal.go b/vendor/google.golang.org/grpc/internal/internal.go index c1d2c690ca4e..bc1f99ac8030 100644 --- a/vendor/google.golang.org/grpc/internal/internal.go +++ b/vendor/google.golang.org/grpc/internal/internal.go @@ -23,6 +23,8 @@ package internal import ( "context" "time" + + "google.golang.org/grpc/connectivity" ) var ( @@ -37,10 +39,25 @@ var ( // KeepaliveMinPingTime is the minimum ping interval. This must be 10s by // default, but tests may wish to set it lower for convenience. KeepaliveMinPingTime = 10 * time.Second + // ParseServiceConfig is a function to parse JSON service configs into + // opaque data structures. + ParseServiceConfig func(sc string) (interface{}, error) + // StatusRawProto is exported by status/status.go. This func returns a + // pointer to the wrapped Status proto for a given status.Status without a + // call to proto.Clone(). The returned Status proto should not be mutated by + // the caller. + StatusRawProto interface{} // func (*status.Status) *spb.Status ) // HealthChecker defines the signature of the client-side LB channel health checking function. -type HealthChecker func(ctx context.Context, newStream func() (interface{}, error), reportHealth func(bool), serviceName string) error +// +// The implementation is expected to create a health checking RPC stream by +// calling newStream(), watch for the health status of serviceName, and report +// it's health back by calling setConnectivityState(). +// +// The health checking protocol is defined at: +// https://github.com/grpc/grpc/blob/master/doc/health-checking.md +type HealthChecker func(ctx context.Context, newStream func(string) (interface{}, error), setConnectivityState func(connectivity.State), serviceName string) error const ( // CredsBundleModeFallback switches GoogleDefaultCreds to fallback mode. diff --git a/vendor/google.golang.org/grpc/internal/transport/controlbuf.go b/vendor/google.golang.org/grpc/internal/transport/controlbuf.go index 204ba1588bbf..b8e0aa4db275 100644 --- a/vendor/google.golang.org/grpc/internal/transport/controlbuf.go +++ b/vendor/google.golang.org/grpc/internal/transport/controlbuf.go @@ -23,6 +23,7 @@ import ( "fmt" "runtime" "sync" + "sync/atomic" "golang.org/x/net/http2" "golang.org/x/net/http2/hpack" @@ -84,12 +85,24 @@ func (il *itemList) isEmpty() bool { // the control buffer of transport. They represent different aspects of // control tasks, e.g., flow control, settings, streaming resetting, etc. +// maxQueuedTransportResponseFrames is the most queued "transport response" +// frames we will buffer before preventing new reads from occurring on the +// transport. These are control frames sent in response to client requests, +// such as RST_STREAM due to bad headers or settings acks. +const maxQueuedTransportResponseFrames = 50 + +type cbItem interface { + isTransportResponseFrame() bool +} + // registerStream is used to register an incoming stream with loopy writer. type registerStream struct { streamID uint32 wq *writeQuota } +func (*registerStream) isTransportResponseFrame() bool { return false } + // headerFrame is also used to register stream on the client-side. type headerFrame struct { streamID uint32 @@ -102,6 +115,10 @@ type headerFrame struct { onOrphaned func(error) // Valid on client-side } +func (h *headerFrame) isTransportResponseFrame() bool { + return h.cleanup != nil && h.cleanup.rst // Results in a RST_STREAM +} + type cleanupStream struct { streamID uint32 rst bool @@ -109,6 +126,8 @@ type cleanupStream struct { onWrite func() } +func (c *cleanupStream) isTransportResponseFrame() bool { return c.rst } // Results in a RST_STREAM + type dataFrame struct { streamID uint32 endStream bool @@ -119,27 +138,41 @@ type dataFrame struct { onEachWrite func() } +func (*dataFrame) isTransportResponseFrame() bool { return false } + type incomingWindowUpdate struct { streamID uint32 increment uint32 } +func (*incomingWindowUpdate) isTransportResponseFrame() bool { return false } + type outgoingWindowUpdate struct { streamID uint32 increment uint32 } +func (*outgoingWindowUpdate) isTransportResponseFrame() bool { + return false // window updates are throttled by thresholds +} + type incomingSettings struct { ss []http2.Setting } +func (*incomingSettings) isTransportResponseFrame() bool { return true } // Results in a settings ACK + type outgoingSettings struct { ss []http2.Setting } +func (*outgoingSettings) isTransportResponseFrame() bool { return false } + type incomingGoAway struct { } +func (*incomingGoAway) isTransportResponseFrame() bool { return false } + type goAway struct { code http2.ErrCode debugData []byte @@ -147,15 +180,21 @@ type goAway struct { closeConn bool } +func (*goAway) isTransportResponseFrame() bool { return false } + type ping struct { ack bool data [8]byte } +func (*ping) isTransportResponseFrame() bool { return true } + type outFlowControlSizeRequest struct { resp chan uint32 } +func (*outFlowControlSizeRequest) isTransportResponseFrame() bool { return false } + type outStreamState int const ( @@ -238,6 +277,14 @@ type controlBuffer struct { consumerWaiting bool list *itemList err error + + // transportResponseFrames counts the number of queued items that represent + // the response of an action initiated by the peer. trfChan is created + // when transportResponseFrames >= maxQueuedTransportResponseFrames and is + // closed and nilled when transportResponseFrames drops below the + // threshold. Both fields are protected by mu. + transportResponseFrames int + trfChan atomic.Value // *chan struct{} } func newControlBuffer(done <-chan struct{}) *controlBuffer { @@ -248,12 +295,24 @@ func newControlBuffer(done <-chan struct{}) *controlBuffer { } } -func (c *controlBuffer) put(it interface{}) error { +// throttle blocks if there are too many incomingSettings/cleanupStreams in the +// controlbuf. +func (c *controlBuffer) throttle() { + ch, _ := c.trfChan.Load().(*chan struct{}) + if ch != nil { + select { + case <-*ch: + case <-c.done: + } + } +} + +func (c *controlBuffer) put(it cbItem) error { _, err := c.executeAndPut(nil, it) return err } -func (c *controlBuffer) executeAndPut(f func(it interface{}) bool, it interface{}) (bool, error) { +func (c *controlBuffer) executeAndPut(f func(it interface{}) bool, it cbItem) (bool, error) { var wakeUp bool c.mu.Lock() if c.err != nil { @@ -271,6 +330,15 @@ func (c *controlBuffer) executeAndPut(f func(it interface{}) bool, it interface{ c.consumerWaiting = false } c.list.enqueue(it) + if it.isTransportResponseFrame() { + c.transportResponseFrames++ + if c.transportResponseFrames == maxQueuedTransportResponseFrames { + // We are adding the frame that puts us over the threshold; create + // a throttling channel. + ch := make(chan struct{}) + c.trfChan.Store(&ch) + } + } c.mu.Unlock() if wakeUp { select { @@ -304,7 +372,17 @@ func (c *controlBuffer) get(block bool) (interface{}, error) { return nil, c.err } if !c.list.isEmpty() { - h := c.list.dequeue() + h := c.list.dequeue().(cbItem) + if h.isTransportResponseFrame() { + if c.transportResponseFrames == maxQueuedTransportResponseFrames { + // We are removing the frame that put us over the + // threshold; close and clear the throttling channel. + ch := c.trfChan.Load().(*chan struct{}) + close(*ch) + c.trfChan.Store((*chan struct{})(nil)) + } + c.transportResponseFrames-- + } c.mu.Unlock() return h, nil } diff --git a/vendor/google.golang.org/grpc/internal/transport/flowcontrol.go b/vendor/google.golang.org/grpc/internal/transport/flowcontrol.go index 5ea997a7e45b..f262edd8ecda 100644 --- a/vendor/google.golang.org/grpc/internal/transport/flowcontrol.go +++ b/vendor/google.golang.org/grpc/internal/transport/flowcontrol.go @@ -149,6 +149,7 @@ func (f *inFlow) maybeAdjust(n uint32) uint32 { n = uint32(math.MaxInt32) } f.mu.Lock() + defer f.mu.Unlock() // estSenderQuota is the receiver's view of the maximum number of bytes the sender // can send without a window update. estSenderQuota := int32(f.limit - (f.pendingData + f.pendingUpdate)) @@ -169,10 +170,8 @@ func (f *inFlow) maybeAdjust(n uint32) uint32 { // is padded; We will fallback on the current available window(at least a 1/4th of the limit). f.delta = n } - f.mu.Unlock() return f.delta } - f.mu.Unlock() return 0 } 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 f2de84d43a81..78f9ddc3d3ab 100644 --- a/vendor/google.golang.org/grpc/internal/transport/handler_server.go +++ b/vendor/google.golang.org/grpc/internal/transport/handler_server.go @@ -24,6 +24,7 @@ package transport import ( + "bytes" "context" "errors" "fmt" @@ -347,7 +348,7 @@ func (ht *serverHandlerTransport) HandleStreams(startStream func(*Stream), trace ht.stats.HandleRPC(s.ctx, inHeader) } s.trReader = &transportReader{ - reader: &recvBufferReader{ctx: s.ctx, ctxDone: s.ctx.Done(), recv: s.buf}, + reader: &recvBufferReader{ctx: s.ctx, ctxDone: s.ctx.Done(), recv: s.buf, freeBuffer: func(*bytes.Buffer) {}}, windowHandler: func(int) {}, } @@ -361,7 +362,7 @@ func (ht *serverHandlerTransport) HandleStreams(startStream func(*Stream), trace for buf := make([]byte, readSize); ; { n, err := req.Body.Read(buf) if n > 0 { - s.buf.put(recvMsg{data: buf[:n:n]}) + s.buf.put(recvMsg{buffer: bytes.NewBuffer(buf[:n:n])}) buf = buf[n:] } if err != nil { diff --git a/vendor/google.golang.org/grpc/internal/transport/http2_client.go b/vendor/google.golang.org/grpc/internal/transport/http2_client.go index 9dee6db61d9d..41a79c567027 100644 --- a/vendor/google.golang.org/grpc/internal/transport/http2_client.go +++ b/vendor/google.golang.org/grpc/internal/transport/http2_client.go @@ -117,6 +117,8 @@ type http2Client struct { onGoAway func(GoAwayReason) onClose func() + + bufferPool *bufferPool } func dial(ctx context.Context, fn func(context.Context, string) (net.Conn, error), addr string) (net.Conn, error) { @@ -249,6 +251,7 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr TargetInfo, opts Conne onGoAway: onGoAway, onClose: onClose, keepaliveEnabled: keepaliveEnabled, + bufferPool: newBufferPool(), } t.controlBuf = newControlBuffer(t.ctxDone) if opts.InitialWindowSize >= defaultWindowSize { @@ -367,6 +370,7 @@ func (t *http2Client) newStream(ctx context.Context, callHdr *CallHdr) *Stream { closeStream: func(err error) { t.CloseStream(s, err) }, + freeBuffer: t.bufferPool.put, }, windowHandler: func(n int) { t.updateWindow(s, uint32(n)) @@ -437,6 +441,15 @@ func (t *http2Client) createHeaderFields(ctx context.Context, callHdr *CallHdr) if md, added, ok := metadata.FromOutgoingContextRaw(ctx); ok { var k string + for k, vv := range md { + // HTTP doesn't allow you to set pseudoheaders after non pseudoheaders were set. + if isReservedHeader(k) { + continue + } + for _, v := range vv { + headerFields = append(headerFields, hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)}) + } + } for _, vv := range added { for i, v := range vv { if i%2 == 0 { @@ -450,15 +463,6 @@ func (t *http2Client) createHeaderFields(ctx context.Context, callHdr *CallHdr) headerFields = append(headerFields, hpack.HeaderField{Name: strings.ToLower(k), Value: encodeMetadataHeader(k, v)}) } } - for k, vv := range md { - // HTTP doesn't allow you to set pseudoheaders after non pseudoheaders were set. - if isReservedHeader(k) { - continue - } - for _, v := range vv { - headerFields = append(headerFields, hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)}) - } - } } if md, ok := t.md.(*metadata.MD); ok { for k, vv := range *md { @@ -489,6 +493,9 @@ func (t *http2Client) createAudience(callHdr *CallHdr) string { } func (t *http2Client) getTrAuthData(ctx context.Context, audience string) (map[string]string, error) { + if len(t.perRPCCreds) == 0 { + return nil, nil + } authData := map[string]string{} for _, c := range t.perRPCCreds { data, err := c.GetRequestMetadata(ctx, audience) @@ -509,7 +516,7 @@ func (t *http2Client) getTrAuthData(ctx context.Context, audience string) (map[s } func (t *http2Client) getCallAuthData(ctx context.Context, audience string, callHdr *CallHdr) (map[string]string, error) { - callAuthData := map[string]string{} + var callAuthData map[string]string // Check if credentials.PerRPCCredentials were provided via call options. // Note: if these credentials are provided both via dial options and call // options, then both sets of credentials will be applied. @@ -521,6 +528,7 @@ func (t *http2Client) getCallAuthData(ctx context.Context, audience string, call if err != nil { return nil, status.Errorf(codes.Internal, "transport: %v", err) } + callAuthData = make(map[string]string, len(data)) for k, v := range data { // Capital header names are illegal in HTTP/2 k = strings.ToLower(k) @@ -549,10 +557,9 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea s.write(recvMsg{err: err}) close(s.done) // If headerChan isn't closed, then close it. - if atomic.SwapUint32(&s.headerDone, 1) == 0 { + if atomic.CompareAndSwapUint32(&s.headerChanClosed, 0, 1) { close(s.headerChan) } - } hdr := &headerFrame{ hf: headerFields, @@ -713,7 +720,7 @@ func (t *http2Client) closeStream(s *Stream, err error, rst bool, rstCode http2. s.write(recvMsg{err: err}) } // If headerChan isn't closed, then close it. - if atomic.SwapUint32(&s.headerDone, 1) == 0 { + if atomic.CompareAndSwapUint32(&s.headerChanClosed, 0, 1) { s.noHeaders = true close(s.headerChan) } @@ -765,6 +772,9 @@ func (t *http2Client) Close() error { t.mu.Unlock() return nil } + // Call t.onClose before setting the state to closing to prevent the client + // from attempting to create new streams ASAP. + t.onClose() t.state = closing streams := t.activeStreams t.activeStreams = nil @@ -785,7 +795,6 @@ func (t *http2Client) Close() error { } t.statsHandler.HandleConn(t.ctx, connEnd) } - t.onClose() return err } @@ -794,21 +803,21 @@ func (t *http2Client) Close() error { // stream is closed. If there are no active streams, the transport is closed // immediately. This does nothing if the transport is already draining or // closing. -func (t *http2Client) GracefulClose() error { +func (t *http2Client) GracefulClose() { t.mu.Lock() // Make sure we move to draining only from active. if t.state == draining || t.state == closing { t.mu.Unlock() - return nil + return } t.state = draining active := len(t.activeStreams) t.mu.Unlock() if active == 0 { - return t.Close() + t.Close() + return } t.controlBuf.put(&incomingGoAway{}) - return nil } // Write formats the data into HTTP2 data frame(s) and sends it out. The caller @@ -946,9 +955,10 @@ func (t *http2Client) handleData(f *http2.DataFrame) { // guarantee f.Data() is consumed before the arrival of next frame. // Can this copy be eliminated? if len(f.Data()) > 0 { - data := make([]byte, len(f.Data())) - copy(data, f.Data()) - s.write(recvMsg{data: data}) + buffer := t.bufferPool.get() + buffer.Reset() + buffer.Write(f.Data()) + s.write(recvMsg{buffer: buffer}) } } // The server has closed the stream without sending trailers. Record that @@ -973,9 +983,9 @@ func (t *http2Client) handleRSTStream(f *http2.RSTStreamFrame) { statusCode = codes.Unknown } if statusCode == codes.Canceled { - // Our deadline was already exceeded, and that was likely the cause of - // this cancelation. Alter the status code accordingly. - if d, ok := s.ctx.Deadline(); ok && d.After(time.Now()) { + if d, ok := s.ctx.Deadline(); ok && !d.After(time.Now()) { + // Our deadline was already exceeded, and that was likely the cause + // of this cancelation. Alter the status code accordingly. statusCode = codes.DeadlineExceeded } } @@ -1080,11 +1090,12 @@ func (t *http2Client) handleGoAway(f *http2.GoAwayFrame) { default: t.setGoAwayReason(f) close(t.goAway) - t.state = draining t.controlBuf.put(&incomingGoAway{}) - - // This has to be a new goroutine because we're still using the current goroutine to read in the transport. + // Notify the clientconn about the GOAWAY before we set the state to + // draining, to allow the client to stop attempting to create streams + // before disallowing new streams on this connection. t.onGoAway(t.goAwayReason) + t.state = draining } // All streams with IDs greater than the GoAwayId // and smaller than the previous GoAway ID should be killed. @@ -1142,26 +1153,24 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) { } endStream := frame.StreamEnded() atomic.StoreUint32(&s.bytesReceived, 1) - initialHeader := atomic.SwapUint32(&s.headerDone, 1) == 0 + initialHeader := atomic.LoadUint32(&s.headerChanClosed) == 0 if !initialHeader && !endStream { - // As specified by RFC 7540, a HEADERS frame (and associated CONTINUATION frames) can only appear - // at the start or end of a stream. Therefore, second HEADERS frame must have EOS bit set. + // As specified by gRPC over HTTP2, a HEADERS frame (and associated CONTINUATION frames) can only appear at the start or end of a stream. Therefore, second HEADERS frame must have EOS bit set. st := status.New(codes.Internal, "a HEADERS frame cannot appear in the middle of a stream") t.closeStream(s, st.Err(), true, http2.ErrCodeProtocol, st, nil, false) return } state := &decodeState{} - // Initialize isGRPC value to be !initialHeader, since if a gRPC ResponseHeader has been received - // which indicates peer speaking gRPC, we are in gRPC mode. + // Initialize isGRPC value to be !initialHeader, since if a gRPC Response-Headers has already been received, then it means that the peer is speaking gRPC and we are in gRPC mode. state.data.isGRPC = !initialHeader if err := state.decodeHeader(frame); err != nil { t.closeStream(s, err, true, http2.ErrCodeProtocol, status.Convert(err), nil, endStream) return } - var isHeader bool + isHeader := false defer func() { if t.statsHandler != nil { if isHeader { @@ -1180,10 +1189,10 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) { } }() - // If headers haven't been received yet. - if initialHeader { + // If headerChan hasn't been closed yet + if atomic.CompareAndSwapUint32(&s.headerChanClosed, 0, 1) { if !endStream { - // Headers frame is ResponseHeader. + // HEADERS frame block carries a Response-Headers. isHeader = true // These values can be set without any synchronization because // stream goroutine will read it only after seeing a closed @@ -1192,14 +1201,17 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) { if len(state.data.mdata) > 0 { s.header = state.data.mdata } - close(s.headerChan) - return + } else { + // HEADERS frame block carries a Trailers-Only. + s.noHeaders = true } - // Headers frame is Trailers-only. - s.noHeaders = true close(s.headerChan) } + if !endStream { + return + } + // if client received END_STREAM from server while stream was still active, send RST_STREAM rst := s.getState() == streamActive t.closeStream(s, io.EOF, rst, http2.ErrCodeNo, state.status(), state.data.mdata, true) @@ -1233,6 +1245,7 @@ func (t *http2Client) reader() { // loop to keep reading incoming messages on this transport. for { + t.controlBuf.throttle() frame, err := t.framer.fr.ReadFrame() if t.keepaliveEnabled { atomic.CompareAndSwapUint32(&t.activity, 0, 1) @@ -1320,6 +1333,7 @@ func (t *http2Client) keepalive() { timer.Reset(t.kp.Time) continue } + infof("transport: closing client transport due to idleness.") t.Close() return case <-t.ctx.Done(): diff --git a/vendor/google.golang.org/grpc/internal/transport/http2_server.go b/vendor/google.golang.org/grpc/internal/transport/http2_server.go index 435092e5c853..83439b5627d9 100644 --- a/vendor/google.golang.org/grpc/internal/transport/http2_server.go +++ b/vendor/google.golang.org/grpc/internal/transport/http2_server.go @@ -35,9 +35,11 @@ import ( "golang.org/x/net/http2" "golang.org/x/net/http2/hpack" + spb "google.golang.org/genproto/googleapis/rpc/status" "google.golang.org/grpc/codes" "google.golang.org/grpc/credentials" "google.golang.org/grpc/grpclog" + "google.golang.org/grpc/internal" "google.golang.org/grpc/internal/channelz" "google.golang.org/grpc/internal/grpcrand" "google.golang.org/grpc/keepalive" @@ -55,6 +57,9 @@ var ( // ErrHeaderListSizeLimitViolation indicates that the header list size is larger // than the limit set by peer. ErrHeaderListSizeLimitViolation = errors.New("transport: trying to send header list size larger than the limit set by peer") + // statusRawProto is a function to get to the raw status proto wrapped in a + // status.Status without a proto.Clone(). + statusRawProto = internal.StatusRawProto.(func(*status.Status) *spb.Status) ) // http2Server implements the ServerTransport interface with HTTP2. @@ -119,6 +124,7 @@ type http2Server struct { // Fields below are for channelz metric collection. channelzID int64 // channelz unique identification number czData *channelzData + bufferPool *bufferPool } // newHTTP2Server constructs a ServerTransport based on HTTP2. ConnectionError is @@ -220,6 +226,7 @@ func newHTTP2Server(conn net.Conn, config *ServerConfig) (_ ServerTransport, err kep: kep, initialWindowSize: iwz, czData: new(channelzData), + bufferPool: newBufferPool(), } t.controlBuf = newControlBuffer(t.ctxDone) if dynamicWindow { @@ -405,9 +412,10 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func( s.wq = newWriteQuota(defaultWriteQuota, s.ctxDone) s.trReader = &transportReader{ reader: &recvBufferReader{ - ctx: s.ctx, - ctxDone: s.ctxDone, - recv: s.buf, + ctx: s.ctx, + ctxDone: s.ctxDone, + recv: s.buf, + freeBuffer: t.bufferPool.put, }, windowHandler: func(n int) { t.updateWindow(s, uint32(n)) @@ -428,6 +436,7 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func( func (t *http2Server) HandleStreams(handle func(*Stream), traceCtx func(context.Context, string) context.Context) { defer close(t.readerDone) for { + t.controlBuf.throttle() frame, err := t.framer.fr.ReadFrame() atomic.StoreUint32(&t.activity, 1) if err != nil { @@ -591,9 +600,10 @@ func (t *http2Server) handleData(f *http2.DataFrame) { // guarantee f.Data() is consumed before the arrival of next frame. // Can this copy be eliminated? if len(f.Data()) > 0 { - data := make([]byte, len(f.Data())) - copy(data, f.Data()) - s.write(recvMsg{data: data}) + buffer := t.bufferPool.get() + buffer.Reset() + buffer.Write(f.Data()) + s.write(recvMsg{buffer: buffer}) } } if f.Header().Flags.Has(http2.FlagDataEndStream) { @@ -757,6 +767,10 @@ func (t *http2Server) WriteHeader(s *Stream, md metadata.MD) error { return nil } +func (t *http2Server) setResetPingStrikes() { + atomic.StoreUint32(&t.resetPingStrikes, 1) +} + func (t *http2Server) writeHeaderLocked(s *Stream) error { // TODO(mmukhi): Benchmark if the performance gets better if count the metadata and other header fields // first and create a slice of that exact size. @@ -771,9 +785,7 @@ func (t *http2Server) writeHeaderLocked(s *Stream) error { streamID: s.id, hf: headerFields, endStream: false, - onWrite: func() { - atomic.StoreUint32(&t.resetPingStrikes, 1) - }, + onWrite: t.setResetPingStrikes, }) if !success { if err != nil { @@ -817,7 +829,7 @@ func (t *http2Server) WriteStatus(s *Stream, st *status.Status) error { headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-status", Value: strconv.Itoa(int(st.Code()))}) headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-message", Value: encodeGrpcMessage(st.Message())}) - if p := st.Proto(); p != nil && len(p.Details) > 0 { + if p := statusRawProto(st); p != nil && len(p.Details) > 0 { stBytes, err := proto.Marshal(p) if err != nil { // TODO: return error instead, when callers are able to handle it. @@ -833,9 +845,7 @@ func (t *http2Server) WriteStatus(s *Stream, st *status.Status) error { streamID: s.id, hf: headerFields, endStream: true, - onWrite: func() { - atomic.StoreUint32(&t.resetPingStrikes, 1) - }, + onWrite: t.setResetPingStrikes, } s.hdrMu.Unlock() success, err := t.controlBuf.execute(t.checkForHeaderListSize, trailingHeader) @@ -887,12 +897,10 @@ func (t *http2Server) Write(s *Stream, hdr []byte, data []byte, opts *Options) e hdr = append(hdr, data[:emptyLen]...) data = data[emptyLen:] df := &dataFrame{ - streamID: s.id, - h: hdr, - d: data, - onEachWrite: func() { - atomic.StoreUint32(&t.resetPingStrikes, 1) - }, + streamID: s.id, + h: hdr, + d: data, + onEachWrite: t.setResetPingStrikes, } if err := s.wq.get(int32(len(hdr) + len(data))); err != nil { select { @@ -958,6 +966,7 @@ func (t *http2Server) keepalive() { select { case <-maxAge.C: // Close the connection after grace period. + infof("transport: closing server transport due to maximum connection age.") t.Close() // Resetting the timer so that the clean-up doesn't deadlock. maxAge.Reset(infinity) @@ -971,6 +980,7 @@ func (t *http2Server) keepalive() { continue } if pingSent { + infof("transport: closing server transport due to idleness.") t.Close() // Resetting the timer so that the clean-up doesn't deadlock. keepalive.Reset(infinity) @@ -1019,13 +1029,7 @@ func (t *http2Server) Close() error { } // deleteStream deletes the stream s from transport's active streams. -func (t *http2Server) deleteStream(s *Stream, eosReceived bool) (oldState streamState) { - oldState = s.swapState(streamDone) - if oldState == streamDone { - // If the stream was already done, return. - return oldState - } - +func (t *http2Server) deleteStream(s *Stream, eosReceived bool) { // In case stream sending and receiving are invoked in separate // goroutines (e.g., bi-directional streaming), cancel needs to be // called to interrupt the potential blocking on other goroutines. @@ -1047,15 +1051,13 @@ func (t *http2Server) deleteStream(s *Stream, eosReceived bool) (oldState stream atomic.AddInt64(&t.czData.streamsFailed, 1) } } - - return oldState } // finishStream closes the stream and puts the trailing headerFrame into controlbuf. func (t *http2Server) finishStream(s *Stream, rst bool, rstCode http2.ErrCode, hdr *headerFrame, eosReceived bool) { - oldState := t.deleteStream(s, eosReceived) - // If the stream is already closed, then don't put trailing header to controlbuf. + oldState := s.swapState(streamDone) if oldState == streamDone { + // If the stream was already done, return. return } @@ -1063,14 +1065,18 @@ func (t *http2Server) finishStream(s *Stream, rst bool, rstCode http2.ErrCode, h streamID: s.id, rst: rst, rstCode: rstCode, - onWrite: func() {}, + onWrite: func() { + t.deleteStream(s, eosReceived) + }, } t.controlBuf.put(hdr) } // closeStream clears the footprint of a stream when the stream is not needed any more. func (t *http2Server) closeStream(s *Stream, rst bool, rstCode http2.ErrCode, eosReceived bool) { + s.swapState(streamDone) t.deleteStream(s, eosReceived) + t.controlBuf.put(&cleanupStream{ streamID: s.id, rst: rst, diff --git a/vendor/google.golang.org/grpc/internal/transport/transport.go b/vendor/google.golang.org/grpc/internal/transport/transport.go index 7f82cbb080df..1c1d106709ac 100644 --- a/vendor/google.golang.org/grpc/internal/transport/transport.go +++ b/vendor/google.golang.org/grpc/internal/transport/transport.go @@ -22,6 +22,7 @@ package transport import ( + "bytes" "context" "errors" "fmt" @@ -39,10 +40,32 @@ import ( "google.golang.org/grpc/tap" ) +type bufferPool struct { + pool sync.Pool +} + +func newBufferPool() *bufferPool { + return &bufferPool{ + pool: sync.Pool{ + New: func() interface{} { + return new(bytes.Buffer) + }, + }, + } +} + +func (p *bufferPool) get() *bytes.Buffer { + return p.pool.Get().(*bytes.Buffer) +} + +func (p *bufferPool) put(b *bytes.Buffer) { + p.pool.Put(b) +} + // recvMsg represents the received msg from the transport. All transport // protocol specific info has been removed. type recvMsg struct { - data []byte + buffer *bytes.Buffer // nil: received some data // io.EOF: stream is completed. data is nil. // other non-nil error: transport failure. data is nil. @@ -117,8 +140,9 @@ type recvBufferReader struct { ctx context.Context ctxDone <-chan struct{} // cache of ctx.Done() (for performance). recv *recvBuffer - last []byte // Stores the remaining data in the previous calls. + last *bytes.Buffer // Stores the remaining data in the previous calls. err error + freeBuffer func(*bytes.Buffer) } // Read reads the next len(p) bytes from last. If last is drained, it tries to @@ -128,10 +152,13 @@ func (r *recvBufferReader) Read(p []byte) (n int, err error) { if r.err != nil { return 0, r.err } - if r.last != nil && len(r.last) > 0 { + if r.last != nil { // Read remaining data left in last call. - copied := copy(p, r.last) - r.last = r.last[copied:] + copied, _ := r.last.Read(p) + if r.last.Len() == 0 { + r.freeBuffer(r.last) + r.last = nil + } return copied, nil } if r.closeStream != nil { @@ -157,6 +184,19 @@ func (r *recvBufferReader) readClient(p []byte) (n int, err error) { // r.readAdditional acts on that message and returns the necessary error. select { case <-r.ctxDone: + // Note that this adds the ctx error to the end of recv buffer, and + // reads from the head. This will delay the error until recv buffer is + // empty, thus will delay ctx cancellation in Recv(). + // + // It's done this way to fix a race between ctx cancel and trailer. The + // race was, stream.Recv() may return ctx error if ctxDone wins the + // race, but stream.Trailer() may return a non-nil md because the stream + // was not marked as done when trailer is received. This closeStream + // call will mark stream as done, thus fix the race. + // + // TODO: delaying ctx error seems like a unnecessary side effect. What + // we really want is to mark the stream as done, and return ctx error + // faster. r.closeStream(ContextErr(r.ctx.Err())) m := <-r.recv.get() return r.readAdditional(m, p) @@ -170,8 +210,13 @@ func (r *recvBufferReader) readAdditional(m recvMsg, p []byte) (n int, err error if m.err != nil { return 0, m.err } - copied := copy(p, m.data) - r.last = m.data[copied:] + copied, _ := m.buffer.Read(p) + if m.buffer.Len() == 0 { + r.freeBuffer(m.buffer) + r.last = nil + } else { + r.last = m.buffer + } return copied, nil } @@ -204,8 +249,8 @@ type Stream struct { // is used to adjust flow control, if needed. requestRead func(int) - headerChan chan struct{} // closed to indicate the end of header metadata. - headerDone uint32 // set when headerChan is closed. Used to avoid closing headerChan multiple times. + headerChan chan struct{} // closed to indicate the end of header metadata. + headerChanClosed uint32 // set when headerChan is closed. Used to avoid closing headerChan multiple times. // hdrMu protects header and trailer metadata on the server-side. hdrMu sync.Mutex @@ -266,6 +311,14 @@ func (s *Stream) waitOnHeader() error { } select { case <-s.ctx.Done(): + // We prefer success over failure when reading messages because we delay + // context error in stream.Read(). To keep behavior consistent, we also + // prefer success here. + select { + case <-s.headerChan: + return nil + default: + } return ContextErr(s.ctx.Err()) case <-s.headerChan: return nil @@ -578,9 +631,12 @@ type ClientTransport interface { // is called only once. Close() error - // GracefulClose starts to tear down the transport. It stops accepting - // new RPCs and wait the completion of the pending RPCs. - GracefulClose() error + // GracefulClose starts to tear down the transport: the transport will stop + // accepting new RPCs and NewStream will return error. Once all streams are + // finished, the transport will close. + // + // It does not block. + GracefulClose() // Write sends the data for the given stream. A nil stream indicates // the write is to be performed on the transport as a whole. diff --git a/vendor/google.golang.org/grpc/naming/naming.go b/vendor/google.golang.org/grpc/naming/naming.go index c99fdbef4353..f4c1c8b68947 100644 --- a/vendor/google.golang.org/grpc/naming/naming.go +++ b/vendor/google.golang.org/grpc/naming/naming.go @@ -17,9 +17,8 @@ */ // Package naming defines the naming API and related data structures for gRPC. -// The interface is EXPERIMENTAL and may be subject to change. // -// Deprecated: please use package resolver. +// This package is deprecated: please use package resolver instead. package naming // Operation defines the corresponding operations for a name resolution change. diff --git a/vendor/google.golang.org/grpc/picker_wrapper.go b/vendor/google.golang.org/grpc/picker_wrapper.go index f9625496c403..45baa2ae13da 100644 --- a/vendor/google.golang.org/grpc/picker_wrapper.go +++ b/vendor/google.golang.org/grpc/picker_wrapper.go @@ -120,6 +120,14 @@ func (bp *pickerWrapper) pick(ctx context.Context, failfast bool, opts balancer. bp.mu.Unlock() select { case <-ctx.Done(): + if connectionErr := bp.connectionError(); connectionErr != nil { + switch ctx.Err() { + case context.DeadlineExceeded: + return nil, nil, status.Errorf(codes.DeadlineExceeded, "latest connection error: %v", connectionErr) + case context.Canceled: + return nil, nil, status.Errorf(codes.Canceled, "latest connection error: %v", connectionErr) + } + } return nil, nil, ctx.Err() case <-ch: } diff --git a/vendor/google.golang.org/grpc/pickfirst.go b/vendor/google.golang.org/grpc/pickfirst.go index d1e38aad778b..ed05b02ed96e 100644 --- a/vendor/google.golang.org/grpc/pickfirst.go +++ b/vendor/google.golang.org/grpc/pickfirst.go @@ -51,14 +51,18 @@ type pickfirstBalancer struct { func (b *pickfirstBalancer) HandleResolvedAddrs(addrs []resolver.Address, err error) { if err != nil { - grpclog.Infof("pickfirstBalancer: HandleResolvedAddrs called with error %v", err) + if grpclog.V(2) { + grpclog.Infof("pickfirstBalancer: HandleResolvedAddrs called with error %v", err) + } return } if b.sc == nil { b.sc, err = b.cc.NewSubConn(addrs, balancer.NewSubConnOptions{}) if err != nil { //TODO(yuxuanli): why not change the cc state to Idle? - grpclog.Errorf("pickfirstBalancer: failed to NewSubConn: %v", err) + if grpclog.V(2) { + grpclog.Errorf("pickfirstBalancer: failed to NewSubConn: %v", err) + } return } b.cc.UpdateBalancerState(connectivity.Idle, &picker{sc: b.sc}) @@ -70,9 +74,13 @@ func (b *pickfirstBalancer) HandleResolvedAddrs(addrs []resolver.Address, err er } func (b *pickfirstBalancer) HandleSubConnStateChange(sc balancer.SubConn, s connectivity.State) { - grpclog.Infof("pickfirstBalancer: HandleSubConnStateChange: %p, %v", sc, s) + if grpclog.V(2) { + grpclog.Infof("pickfirstBalancer: HandleSubConnStateChange: %p, %v", sc, s) + } if b.sc != sc { - grpclog.Infof("pickfirstBalancer: ignored state change because sc is not recognized") + if grpclog.V(2) { + grpclog.Infof("pickfirstBalancer: ignored state change because sc is not recognized") + } return } if s == connectivity.Shutdown { diff --git a/vendor/google.golang.org/grpc/preloader.go b/vendor/google.golang.org/grpc/preloader.go new file mode 100644 index 000000000000..76acbbcc93b9 --- /dev/null +++ b/vendor/google.golang.org/grpc/preloader.go @@ -0,0 +1,64 @@ +/* + * + * Copyright 2019 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package grpc + +import ( + "google.golang.org/grpc/codes" + "google.golang.org/grpc/status" +) + +// PreparedMsg is responsible for creating a Marshalled and Compressed object. +// +// This API is EXPERIMENTAL. +type PreparedMsg struct { + // Struct for preparing msg before sending them + encodedData []byte + hdr []byte + payload []byte +} + +// Encode marshalls and compresses the message using the codec and compressor for the stream. +func (p *PreparedMsg) Encode(s Stream, msg interface{}) error { + ctx := s.Context() + rpcInfo, ok := rpcInfoFromContext(ctx) + if !ok { + return status.Errorf(codes.Internal, "grpc: unable to get rpcInfo") + } + + // check if the context has the relevant information to prepareMsg + if rpcInfo.preloaderInfo == nil { + return status.Errorf(codes.Internal, "grpc: rpcInfo.preloaderInfo is nil") + } + if rpcInfo.preloaderInfo.codec == nil { + return status.Errorf(codes.Internal, "grpc: rpcInfo.preloaderInfo.codec is nil") + } + + // prepare the msg + data, err := encode(rpcInfo.preloaderInfo.codec, msg) + if err != nil { + return err + } + p.encodedData = data + compData, err := compress(data, rpcInfo.preloaderInfo.cp, rpcInfo.preloaderInfo.comp) + if err != nil { + return err + } + p.hdr, p.payload = msgHeader(data, compData) + return nil +} diff --git a/vendor/google.golang.org/grpc/resolver/dns/dns_resolver.go b/vendor/google.golang.org/grpc/resolver/dns/dns_resolver.go index 58355990779b..297492e87af4 100644 --- a/vendor/google.golang.org/grpc/resolver/dns/dns_resolver.go +++ b/vendor/google.golang.org/grpc/resolver/dns/dns_resolver.go @@ -66,6 +66,9 @@ var ( var ( defaultResolver netResolver = net.DefaultResolver + // To prevent excessive re-resolution, we enforce a rate limit on DNS + // resolution requests. + minDNSResRate = 30 * time.Second ) var customAuthorityDialler = func(authority string) func(ctx context.Context, network, address string) (net.Conn, error) { @@ -241,7 +244,13 @@ func (d *dnsResolver) watcher() { return case <-d.t.C: case <-d.rn: + if !d.t.Stop() { + // Before resetting a timer, it should be stopped to prevent racing with + // reads on it's channel. + <-d.t.C + } } + result, sc := d.lookup() // Next lookup should happen within an interval defined by d.freq. It may be // more often due to exponential retry on empty address list. @@ -254,6 +263,16 @@ func (d *dnsResolver) watcher() { } d.cc.NewServiceConfig(sc) d.cc.NewAddress(result) + + // Sleep to prevent excessive re-resolutions. Incoming resolution requests + // will be queued in d.rn. + t := time.NewTimer(minDNSResRate) + select { + case <-t.C: + case <-d.ctx.Done(): + t.Stop() + return + } } } diff --git a/vendor/google.golang.org/grpc/resolver/resolver.go b/vendor/google.golang.org/grpc/resolver/resolver.go index 52ec603daa77..e83da346a5cd 100644 --- a/vendor/google.golang.org/grpc/resolver/resolver.go +++ b/vendor/google.golang.org/grpc/resolver/resolver.go @@ -20,6 +20,10 @@ // All APIs in this package are experimental. package resolver +import ( + "google.golang.org/grpc/serviceconfig" +) + var ( // m is a map from scheme to resolver builder. m = make(map[string]Builder) @@ -100,11 +104,12 @@ type BuildOption struct { // State contains the current Resolver state relevant to the ClientConn. type State struct { - Addresses []Address // Resolved addresses for the target - ServiceConfig string // JSON representation of the service config + Addresses []Address // Resolved addresses for the target + // ServiceConfig is the parsed service config; obtained from + // serviceconfig.Parse. + ServiceConfig serviceconfig.Config // TODO: add Err error - // TODO: add ParsedServiceConfig interface{} } // ClientConn contains the callbacks for resolver to notify any updates @@ -132,6 +137,21 @@ type ClientConn interface { // Target represents a target for gRPC, as specified in: // https://github.com/grpc/grpc/blob/master/doc/naming.md. +// It is parsed from the target string that gets passed into Dial or DialContext by the user. And +// grpc passes it to the resolver and the balancer. +// +// If the target follows the naming spec, and the parsed scheme is registered with grpc, we will +// parse the target string according to the spec. e.g. "dns://some_authority/foo.bar" will be parsed +// into &Target{Scheme: "dns", Authority: "some_authority", Endpoint: "foo.bar"} +// +// If the target does not contain a scheme, we will apply the default scheme, and set the Target to +// be the full target string. e.g. "foo.bar" will be parsed into +// &Target{Scheme: resolver.GetDefaultScheme(), Endpoint: "foo.bar"}. +// +// If the parsed scheme is not registered (i.e. no corresponding resolver available to resolve the +// endpoint), we set the Scheme to be the default scheme, and set the Endpoint to be the full target +// string. e.g. target string "unknown_scheme://authority/endpoint" will be parsed into +// &Target{Scheme: resolver.GetDefaultScheme(), Endpoint: "unknown_scheme://authority/endpoint"}. type Target struct { Scheme string Authority string diff --git a/vendor/google.golang.org/grpc/resolver_conn_wrapper.go b/vendor/google.golang.org/grpc/resolver_conn_wrapper.go index e9cef3a92b55..6934905b0f6c 100644 --- a/vendor/google.golang.org/grpc/resolver_conn_wrapper.go +++ b/vendor/google.golang.org/grpc/resolver_conn_wrapper.go @@ -138,19 +138,22 @@ func (ccr *ccResolverWrapper) NewServiceConfig(sc string) { return } grpclog.Infof("ccResolverWrapper: got new service config: %v", sc) + c, err := parseServiceConfig(sc) + if err != nil { + return + } if channelz.IsOn() { - ccr.addChannelzTraceEvent(resolver.State{Addresses: ccr.curState.Addresses, ServiceConfig: sc}) + ccr.addChannelzTraceEvent(resolver.State{Addresses: ccr.curState.Addresses, ServiceConfig: c}) } - ccr.curState.ServiceConfig = sc + ccr.curState.ServiceConfig = c ccr.cc.updateResolverState(ccr.curState) } func (ccr *ccResolverWrapper) addChannelzTraceEvent(s resolver.State) { - if s.ServiceConfig == ccr.curState.ServiceConfig && (len(ccr.curState.Addresses) == 0) == (len(s.Addresses) == 0) { - return - } var updates []string - if s.ServiceConfig != ccr.curState.ServiceConfig { + oldSC, oldOK := ccr.curState.ServiceConfig.(*ServiceConfig) + newSC, newOK := s.ServiceConfig.(*ServiceConfig) + if oldOK != newOK || (oldOK && newOK && oldSC.rawJSONString != newSC.rawJSONString) { updates = append(updates, "service config updated") } if len(ccr.curState.Addresses) > 0 && len(s.Addresses) == 0 { diff --git a/vendor/google.golang.org/grpc/rpc_util.go b/vendor/google.golang.org/grpc/rpc_util.go index 2a595622d3cc..088c3f1b2528 100644 --- a/vendor/google.golang.org/grpc/rpc_util.go +++ b/vendor/google.golang.org/grpc/rpc_util.go @@ -694,14 +694,34 @@ func recv(p *parser, c baseCodec, s *transport.Stream, dc Decompressor, m interf return nil } +// Information about RPC type rpcInfo struct { - failfast bool + failfast bool + preloaderInfo *compressorInfo +} + +// Information about Preloader +// Responsible for storing codec, and compressors +// If stream (s) has context s.Context which stores rpcInfo that has non nil +// pointers to codec, and compressors, then we can use preparedMsg for Async message prep +// and reuse marshalled bytes +type compressorInfo struct { + codec baseCodec + cp Compressor + comp encoding.Compressor } type rpcInfoContextKey struct{} -func newContextWithRPCInfo(ctx context.Context, failfast bool) context.Context { - return context.WithValue(ctx, rpcInfoContextKey{}, &rpcInfo{failfast: failfast}) +func newContextWithRPCInfo(ctx context.Context, failfast bool, codec baseCodec, cp Compressor, comp encoding.Compressor) context.Context { + return context.WithValue(ctx, rpcInfoContextKey{}, &rpcInfo{ + failfast: failfast, + preloaderInfo: &compressorInfo{ + codec: codec, + cp: cp, + comp: comp, + }, + }) } func rpcInfoFromContext(ctx context.Context) (s *rpcInfo, ok bool) { diff --git a/vendor/google.golang.org/grpc/server.go b/vendor/google.golang.org/grpc/server.go index 8115828fdf00..f064b73e555d 100644 --- a/vendor/google.golang.org/grpc/server.go +++ b/vendor/google.golang.org/grpc/server.go @@ -42,6 +42,7 @@ import ( "google.golang.org/grpc/grpclog" "google.golang.org/grpc/internal/binarylog" "google.golang.org/grpc/internal/channelz" + "google.golang.org/grpc/internal/grpcsync" "google.golang.org/grpc/internal/transport" "google.golang.org/grpc/keepalive" "google.golang.org/grpc/metadata" @@ -56,6 +57,8 @@ const ( defaultServerMaxSendMessageSize = math.MaxInt32 ) +var statusOK = status.New(codes.OK, "") + type methodHandler func(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor UnaryServerInterceptor) (interface{}, error) // MethodDesc represents an RPC service's method specification. @@ -86,21 +89,19 @@ type service struct { // Server is a gRPC server to serve RPC requests. type Server struct { - opts options + opts serverOptions mu sync.Mutex // guards following lis map[net.Listener]bool - conns map[io.Closer]bool + conns map[transport.ServerTransport]bool serve bool drain bool cv *sync.Cond // signaled when connections close for GracefulStop m map[string]*service // service name -> service info events trace.EventLog - quit chan struct{} - done chan struct{} - quitOnce sync.Once - doneOnce sync.Once + quit *grpcsync.Event + done *grpcsync.Event channelzRemoveOnce sync.Once serveWG sync.WaitGroup // counts active Serve goroutines for GracefulStop @@ -108,7 +109,7 @@ type Server struct { czData *channelzData } -type options struct { +type serverOptions struct { creds credentials.TransportCredentials codec baseCodec cp Compressor @@ -131,7 +132,7 @@ type options struct { maxHeaderListSize *uint32 } -var defaultServerOptions = options{ +var defaultServerOptions = serverOptions{ maxReceiveMessageSize: defaultServerMaxReceiveMessageSize, maxSendMessageSize: defaultServerMaxSendMessageSize, connectionTimeout: 120 * time.Second, @@ -140,7 +141,33 @@ var defaultServerOptions = options{ } // A ServerOption sets options such as credentials, codec and keepalive parameters, etc. -type ServerOption func(*options) +type ServerOption interface { + apply(*serverOptions) +} + +// EmptyServerOption does not alter the server configuration. It can be embedded +// in another structure to build custom server options. +// +// This API is EXPERIMENTAL. +type EmptyServerOption struct{} + +func (EmptyServerOption) apply(*serverOptions) {} + +// funcServerOption wraps a function that modifies serverOptions into an +// implementation of the ServerOption interface. +type funcServerOption struct { + f func(*serverOptions) +} + +func (fdo *funcServerOption) apply(do *serverOptions) { + fdo.f(do) +} + +func newFuncServerOption(f func(*serverOptions)) *funcServerOption { + return &funcServerOption{ + f: f, + } +} // WriteBufferSize determines how much data can be batched before doing a write on the wire. // The corresponding memory allocation for this buffer will be twice the size to keep syscalls low. @@ -148,9 +175,9 @@ type ServerOption func(*options) // Zero will disable the write buffer such that each write will be on underlying connection. // Note: A Send call may not directly translate to a write. func WriteBufferSize(s int) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.writeBufferSize = s - } + }) } // ReadBufferSize lets you set the size of read buffer, this determines how much data can be read at most @@ -159,25 +186,25 @@ func WriteBufferSize(s int) ServerOption { // Zero will disable read buffer for a connection so data framer can access the underlying // conn directly. func ReadBufferSize(s int) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.readBufferSize = s - } + }) } // InitialWindowSize returns a ServerOption that sets window size for stream. // The lower bound for window size is 64K and any value smaller than that will be ignored. func InitialWindowSize(s int32) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.initialWindowSize = s - } + }) } // InitialConnWindowSize returns a ServerOption that sets window size for a connection. // The lower bound for window size is 64K and any value smaller than that will be ignored. func InitialConnWindowSize(s int32) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.initialConnWindowSize = s - } + }) } // KeepaliveParams returns a ServerOption that sets keepalive and max-age parameters for the server. @@ -187,25 +214,25 @@ func KeepaliveParams(kp keepalive.ServerParameters) ServerOption { kp.Time = time.Second } - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.keepaliveParams = kp - } + }) } // KeepaliveEnforcementPolicy returns a ServerOption that sets keepalive enforcement policy for the server. func KeepaliveEnforcementPolicy(kep keepalive.EnforcementPolicy) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.keepalivePolicy = kep - } + }) } // CustomCodec returns a ServerOption that sets a codec for message marshaling and unmarshaling. // // This will override any lookups by content-subtype for Codecs registered with RegisterCodec. func CustomCodec(codec Codec) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.codec = codec - } + }) } // RPCCompressor returns a ServerOption that sets a compressor for outbound @@ -216,9 +243,9 @@ func CustomCodec(codec Codec) ServerOption { // // Deprecated: use encoding.RegisterCompressor instead. func RPCCompressor(cp Compressor) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.cp = cp - } + }) } // RPCDecompressor returns a ServerOption that sets a decompressor for inbound @@ -227,9 +254,9 @@ func RPCCompressor(cp Compressor) ServerOption { // // Deprecated: use encoding.RegisterCompressor instead. func RPCDecompressor(dc Decompressor) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.dc = dc - } + }) } // MaxMsgSize returns a ServerOption to set the max message size in bytes the server can receive. @@ -243,73 +270,73 @@ func MaxMsgSize(m int) ServerOption { // MaxRecvMsgSize returns a ServerOption to set the max message size in bytes the server can receive. // If this is not set, gRPC uses the default 4MB. func MaxRecvMsgSize(m int) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.maxReceiveMessageSize = m - } + }) } // MaxSendMsgSize returns a ServerOption to set the max message size in bytes the server can send. // If this is not set, gRPC uses the default `math.MaxInt32`. func MaxSendMsgSize(m int) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.maxSendMessageSize = m - } + }) } // MaxConcurrentStreams returns a ServerOption that will apply a limit on the number // of concurrent streams to each ServerTransport. func MaxConcurrentStreams(n uint32) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.maxConcurrentStreams = n - } + }) } // Creds returns a ServerOption that sets credentials for server connections. func Creds(c credentials.TransportCredentials) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.creds = c - } + }) } // UnaryInterceptor returns a ServerOption that sets the UnaryServerInterceptor for the // server. Only one unary interceptor can be installed. The construction of multiple // interceptors (e.g., chaining) can be implemented at the caller. func UnaryInterceptor(i UnaryServerInterceptor) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { if o.unaryInt != nil { panic("The unary server interceptor was already set and may not be reset.") } o.unaryInt = i - } + }) } // StreamInterceptor returns a ServerOption that sets the StreamServerInterceptor for the // server. Only one stream interceptor can be installed. func StreamInterceptor(i StreamServerInterceptor) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { if o.streamInt != nil { panic("The stream server interceptor was already set and may not be reset.") } o.streamInt = i - } + }) } // InTapHandle returns a ServerOption that sets the tap handle for all the server // transport to be created. Only one can be installed. func InTapHandle(h tap.ServerInHandle) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { if o.inTapHandle != nil { panic("The tap handle was already set and may not be reset.") } o.inTapHandle = h - } + }) } // StatsHandler returns a ServerOption that sets the stats handler for the server. func StatsHandler(h stats.Handler) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.statsHandler = h - } + }) } // UnknownServiceHandler returns a ServerOption that allows for adding a custom @@ -319,7 +346,7 @@ func StatsHandler(h stats.Handler) ServerOption { // The handling function has full access to the Context of the request and the // stream, and the invocation bypasses interceptors. func UnknownServiceHandler(streamHandler StreamHandler) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.unknownStreamDesc = &StreamDesc{ StreamName: "unknown_service_handler", Handler: streamHandler, @@ -327,7 +354,7 @@ func UnknownServiceHandler(streamHandler StreamHandler) ServerOption { ClientStreams: true, ServerStreams: true, } - } + }) } // ConnectionTimeout returns a ServerOption that sets the timeout for @@ -337,17 +364,17 @@ func UnknownServiceHandler(streamHandler StreamHandler) ServerOption { // // This API is EXPERIMENTAL. func ConnectionTimeout(d time.Duration) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.connectionTimeout = d - } + }) } // MaxHeaderListSize returns a ServerOption that sets the max (uncompressed) size // of header list that the server is prepared to accept. func MaxHeaderListSize(s uint32) ServerOption { - return func(o *options) { + return newFuncServerOption(func(o *serverOptions) { o.maxHeaderListSize = &s - } + }) } // NewServer creates a gRPC server which has no service registered and has not @@ -355,15 +382,15 @@ func MaxHeaderListSize(s uint32) ServerOption { func NewServer(opt ...ServerOption) *Server { opts := defaultServerOptions for _, o := range opt { - o(&opts) + o.apply(&opts) } s := &Server{ lis: make(map[net.Listener]bool), opts: opts, - conns: make(map[io.Closer]bool), + conns: make(map[transport.ServerTransport]bool), m: make(map[string]*service), - quit: make(chan struct{}), - done: make(chan struct{}), + quit: grpcsync.NewEvent(), + done: grpcsync.NewEvent(), czData: new(channelzData), } s.cv = sync.NewCond(&s.mu) @@ -530,11 +557,9 @@ func (s *Server) Serve(lis net.Listener) error { s.serveWG.Add(1) defer func() { s.serveWG.Done() - select { - // Stop or GracefulStop called; block until done and return nil. - case <-s.quit: - <-s.done - default: + if s.quit.HasFired() { + // Stop or GracefulStop called; block until done and return nil. + <-s.done.Done() } }() @@ -577,7 +602,7 @@ func (s *Server) Serve(lis net.Listener) error { timer := time.NewTimer(tempDelay) select { case <-timer.C: - case <-s.quit: + case <-s.quit.Done(): timer.Stop() return nil } @@ -587,10 +612,8 @@ func (s *Server) Serve(lis net.Listener) error { s.printf("done serving; Accept = %v", err) s.mu.Unlock() - select { - case <-s.quit: + if s.quit.HasFired() { return nil - default: } return err } @@ -611,6 +634,10 @@ func (s *Server) Serve(lis net.Listener) error { // handleRawConn forks a goroutine to handle a just-accepted connection that // has not had any I/O performed on it yet. func (s *Server) handleRawConn(rawConn net.Conn) { + if s.quit.HasFired() { + rawConn.Close() + return + } rawConn.SetDeadline(time.Now().Add(s.opts.connectionTimeout)) conn, authInfo, err := s.useTransportAuthenticator(rawConn) if err != nil { @@ -627,14 +654,6 @@ func (s *Server) handleRawConn(rawConn net.Conn) { return } - s.mu.Lock() - if s.conns == nil { - s.mu.Unlock() - conn.Close() - return - } - s.mu.Unlock() - // Finish handshaking (HTTP2) st := s.newHTTP2Transport(conn, authInfo) if st == nil { @@ -742,6 +761,9 @@ func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) { // traceInfo returns a traceInfo and associates it with stream, if tracing is enabled. // If tracing is not enabled, it returns nil. func (s *Server) traceInfo(st transport.ServerTransport, stream *transport.Stream) (trInfo *traceInfo) { + if !EnableTracing { + return nil + } tr, ok := trace.FromContext(stream.Context()) if !ok { return nil @@ -760,27 +782,27 @@ func (s *Server) traceInfo(st transport.ServerTransport, stream *transport.Strea return trInfo } -func (s *Server) addConn(c io.Closer) bool { +func (s *Server) addConn(st transport.ServerTransport) bool { s.mu.Lock() defer s.mu.Unlock() if s.conns == nil { - c.Close() + st.Close() return false } if s.drain { // Transport added after we drained our existing conns: drain it // immediately. - c.(transport.ServerTransport).Drain() + st.Drain() } - s.conns[c] = true + s.conns[st] = true return true } -func (s *Server) removeConn(c io.Closer) { +func (s *Server) removeConn(st transport.ServerTransport) { s.mu.Lock() defer s.mu.Unlock() if s.conns != nil { - delete(s.conns, c) + delete(s.conns, st) s.cv.Broadcast() } } @@ -952,10 +974,11 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. } if sh != nil { sh.HandleRPC(stream.Context(), &stats.InPayload{ - RecvTime: time.Now(), - Payload: v, - Data: d, - Length: len(d), + RecvTime: time.Now(), + Payload: v, + WireLength: payInfo.wireLength, + Data: d, + Length: len(d), }) } if binlog != nil { @@ -1051,7 +1074,7 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. // TODO: Should we be logging if writing status failed here, like above? // Should the logging be in WriteStatus? Should we ignore the WriteStatus // error or allow the stats handler to see it? - err = t.WriteStatus(stream, status.New(codes.OK, "")) + err = t.WriteStatus(stream, statusOK) if binlog != nil { binlog.Log(&binarylog.ServerTrailer{ Trailer: stream.Trailer(), @@ -1209,7 +1232,7 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp ss.trInfo.tr.LazyLog(stringer("OK"), false) ss.mu.Unlock() } - err = t.WriteStatus(ss.s, status.New(codes.OK, "")) + err = t.WriteStatus(ss.s, statusOK) if ss.binlog != nil { ss.binlog.Log(&binarylog.ServerTrailer{ Trailer: ss.s.Trailer(), @@ -1326,15 +1349,11 @@ func ServerTransportStreamFromContext(ctx context.Context) ServerTransportStream // pending RPCs on the client side will get notified by connection // errors. func (s *Server) Stop() { - s.quitOnce.Do(func() { - close(s.quit) - }) + s.quit.Fire() defer func() { s.serveWG.Wait() - s.doneOnce.Do(func() { - close(s.done) - }) + s.done.Fire() }() s.channelzRemoveOnce.Do(func() { @@ -1371,15 +1390,8 @@ func (s *Server) Stop() { // accepting new connections and RPCs and blocks until all the pending RPCs are // finished. func (s *Server) GracefulStop() { - s.quitOnce.Do(func() { - close(s.quit) - }) - - defer func() { - s.doneOnce.Do(func() { - close(s.done) - }) - }() + s.quit.Fire() + defer s.done.Fire() s.channelzRemoveOnce.Do(func() { if channelz.IsOn() { @@ -1397,8 +1409,8 @@ func (s *Server) GracefulStop() { } s.lis = nil if !s.drain { - for c := range s.conns { - c.(transport.ServerTransport).Drain() + for st := range s.conns { + st.Drain() } s.drain = true } diff --git a/vendor/google.golang.org/grpc/service_config.go b/vendor/google.golang.org/grpc/service_config.go index 1c5227426f49..d0787f1e2a1c 100644 --- a/vendor/google.golang.org/grpc/service_config.go +++ b/vendor/google.golang.org/grpc/service_config.go @@ -25,8 +25,11 @@ import ( "strings" "time" + "google.golang.org/grpc/balancer" "google.golang.org/grpc/codes" "google.golang.org/grpc/grpclog" + "google.golang.org/grpc/internal" + "google.golang.org/grpc/serviceconfig" ) const maxInt = int(^uint(0) >> 1) @@ -61,6 +64,11 @@ type MethodConfig struct { retryPolicy *retryPolicy } +type lbConfig struct { + name string + cfg serviceconfig.LoadBalancingConfig +} + // ServiceConfig is provided by the service provider and contains parameters for how // clients that connect to the service should behave. // @@ -68,10 +76,18 @@ type MethodConfig struct { // through name resolver, as specified here // https://github.com/grpc/grpc/blob/master/doc/service_config.md type ServiceConfig struct { - // LB is the load balancer the service providers recommends. The balancer specified - // via grpc.WithBalancer will override this. + serviceconfig.Config + + // LB is the load balancer the service providers recommends. The balancer + // specified via grpc.WithBalancer will override this. This is deprecated; + // lbConfigs is preferred. If lbConfig and LB are both present, lbConfig + // will be used. LB *string + // lbConfig is the service config's load balancing configuration. If + // lbConfig and LB are both present, lbConfig will be used. + lbConfig *lbConfig + // 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 @@ -233,15 +249,27 @@ type jsonMC struct { RetryPolicy *jsonRetryPolicy } +type loadBalancingConfig map[string]json.RawMessage + // TODO(lyuxuan): delete this struct after cleaning up old service config implementation. type jsonSC struct { LoadBalancingPolicy *string + LoadBalancingConfig *[]loadBalancingConfig MethodConfig *[]jsonMC RetryThrottling *retryThrottlingPolicy HealthCheckConfig *healthCheckConfig } +func init() { + internal.ParseServiceConfig = func(sc string) (interface{}, error) { + return parseServiceConfig(sc) + } +} + func parseServiceConfig(js string) (*ServiceConfig, error) { + if len(js) == 0 { + return nil, fmt.Errorf("no JSON service config provided") + } var rsc jsonSC err := json.Unmarshal([]byte(js), &rsc) if err != nil { @@ -255,10 +283,38 @@ func parseServiceConfig(js string) (*ServiceConfig, error) { healthCheckConfig: rsc.HealthCheckConfig, rawJSONString: js, } + if rsc.LoadBalancingConfig != nil { + for i, lbcfg := range *rsc.LoadBalancingConfig { + if len(lbcfg) != 1 { + err := fmt.Errorf("invalid loadBalancingConfig: entry %v does not contain exactly 1 policy/config pair: %q", i, lbcfg) + grpclog.Warningf(err.Error()) + return nil, err + } + var name string + var jsonCfg json.RawMessage + for name, jsonCfg = range lbcfg { + } + builder := balancer.Get(name) + if builder == nil { + continue + } + sc.lbConfig = &lbConfig{name: name} + if parser, ok := builder.(balancer.ConfigParser); ok { + var err error + sc.lbConfig.cfg, err = parser.ParseConfig(jsonCfg) + if err != nil { + return nil, fmt.Errorf("error parsing loadBalancingConfig for policy %q: %v", name, err) + } + } else if string(jsonCfg) != "{}" { + grpclog.Warningf("non-empty balancer configuration %q, but balancer does not implement ParseConfig", string(jsonCfg)) + } + break + } + } + if rsc.MethodConfig == nil { return &sc, nil } - for _, m := range *rsc.MethodConfig { if m.Name == nil { continue @@ -299,11 +355,11 @@ func parseServiceConfig(js string) (*ServiceConfig, error) { } if sc.retryThrottling != nil { - if sc.retryThrottling.MaxTokens <= 0 || - sc.retryThrottling.MaxTokens > 1000 || - sc.retryThrottling.TokenRatio <= 0 { - // Illegal throttling config; disable throttling. - sc.retryThrottling = nil + if mt := sc.retryThrottling.MaxTokens; mt <= 0 || mt > 1000 { + return nil, fmt.Errorf("invalid retry throttling config: maxTokens (%v) out of range (0, 1000]", mt) + } + if tr := sc.retryThrottling.TokenRatio; tr <= 0 { + return nil, fmt.Errorf("invalid retry throttling config: tokenRatio (%v) may not be negative", tr) } } return &sc, nil diff --git a/vendor/google.golang.org/grpc/serviceconfig/serviceconfig.go b/vendor/google.golang.org/grpc/serviceconfig/serviceconfig.go new file mode 100644 index 000000000000..53b27875a1ac --- /dev/null +++ b/vendor/google.golang.org/grpc/serviceconfig/serviceconfig.go @@ -0,0 +1,48 @@ +/* + * + * Copyright 2019 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// Package serviceconfig defines types and methods for operating on gRPC +// service configs. +// +// This package is EXPERIMENTAL. +package serviceconfig + +import ( + "google.golang.org/grpc/internal" +) + +// Config represents an opaque data structure holding a service config. +type Config interface { + isConfig() +} + +// LoadBalancingConfig represents an opaque data structure holding a load +// balancer config. +type LoadBalancingConfig interface { + isLoadBalancingConfig() +} + +// Parse parses the JSON service config provided into an internal form or +// returns an error if the config is invalid. +func Parse(ServiceConfigJSON string) (Config, error) { + c, err := internal.ParseServiceConfig(ServiceConfigJSON) + if err != nil { + return nil, err + } + return c.(Config), err +} diff --git a/vendor/google.golang.org/grpc/status/status.go b/vendor/google.golang.org/grpc/status/status.go index ed36681bb546..a1348e9b16bd 100644 --- a/vendor/google.golang.org/grpc/status/status.go +++ b/vendor/google.golang.org/grpc/status/status.go @@ -36,8 +36,15 @@ import ( "github.com/golang/protobuf/ptypes" spb "google.golang.org/genproto/googleapis/rpc/status" "google.golang.org/grpc/codes" + "google.golang.org/grpc/internal" ) +func init() { + internal.StatusRawProto = statusRawProto +} + +func statusRawProto(s *Status) *spb.Status { return s.s } + // statusError is an alias of a status proto. It implements error and Status, // and a nil statusError should never be returned by this package. type statusError spb.Status @@ -51,6 +58,17 @@ func (se *statusError) GRPCStatus() *Status { return &Status{s: (*spb.Status)(se)} } +// Is implements future error.Is functionality. +// A statusError is equivalent if the code and message are identical. +func (se *statusError) Is(target error) bool { + tse, ok := target.(*statusError) + if !ok { + return false + } + + return proto.Equal((*spb.Status)(se), (*spb.Status)(tse)) +} + // Status represents an RPC status code, message, and details. It is immutable // and should be created with New, Newf, or FromProto. type Status struct { @@ -125,7 +143,7 @@ func FromProto(s *spb.Status) *Status { // Status is returned with codes.Unknown and the original error message. func FromError(err error) (s *Status, ok bool) { if err == nil { - return &Status{s: &spb.Status{Code: int32(codes.OK)}}, true + return nil, true } if se, ok := err.(interface { GRPCStatus() *Status @@ -199,7 +217,7 @@ func Code(err error) codes.Code { func FromContextError(err error) *Status { switch err { case nil: - return New(codes.OK, "") + return nil case context.DeadlineExceeded: return New(codes.DeadlineExceeded, err.Error()) case context.Canceled: diff --git a/vendor/google.golang.org/grpc/stream.go b/vendor/google.golang.org/grpc/stream.go index 6e2bf51e0a09..134a624a15df 100644 --- a/vendor/google.golang.org/grpc/stream.go +++ b/vendor/google.golang.org/grpc/stream.go @@ -30,7 +30,6 @@ import ( "golang.org/x/net/trace" "google.golang.org/grpc/balancer" "google.golang.org/grpc/codes" - "google.golang.org/grpc/connectivity" "google.golang.org/grpc/encoding" "google.golang.org/grpc/grpclog" "google.golang.org/grpc/internal/balancerload" @@ -245,7 +244,7 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth trInfo.tr.LazyLog(&trInfo.firstLine, false) ctx = trace.NewContext(ctx, trInfo.tr) } - ctx = newContextWithRPCInfo(ctx, c.failFast) + ctx = newContextWithRPCInfo(ctx, c.failFast, c.codec, cp, comp) sh := cc.dopts.copts.StatsHandler var beginTime time.Time if sh != nil { @@ -328,13 +327,23 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth return cs, nil } -func (cs *clientStream) newAttemptLocked(sh stats.Handler, trInfo *traceInfo) error { - cs.attempt = &csAttempt{ +// newAttemptLocked creates a new attempt with a transport. +// If it succeeds, then it replaces clientStream's attempt with this new attempt. +func (cs *clientStream) newAttemptLocked(sh stats.Handler, trInfo *traceInfo) (retErr error) { + newAttempt := &csAttempt{ cs: cs, dc: cs.cc.dopts.dc, statsHandler: sh, trInfo: trInfo, } + defer func() { + if retErr != nil { + // This attempt is not set in the clientStream, so it's finish won't + // be called. Call it here for stats and trace in case they are not + // nil. + newAttempt.finish(retErr) + } + }() if err := cs.ctx.Err(); err != nil { return toRPCErr(err) @@ -346,8 +355,9 @@ func (cs *clientStream) newAttemptLocked(sh stats.Handler, trInfo *traceInfo) er if trInfo != nil { trInfo.firstLine.SetRemoteAddr(t.RemoteAddr()) } - cs.attempt.t = t - cs.attempt.done = done + newAttempt.t = t + newAttempt.done = done + cs.attempt = newAttempt return nil } @@ -396,11 +406,18 @@ type clientStream struct { serverHeaderBinlogged bool mu sync.Mutex - firstAttempt bool // if true, transparent retry is valid - numRetries int // exclusive of transparent retry attempt(s) - numRetriesSincePushback int // retries since pushback; to reset backoff - finished bool // TODO: replace with atomic cmpxchg or sync.Once? - attempt *csAttempt // the active client stream attempt + firstAttempt bool // if true, transparent retry is valid + numRetries int // exclusive of transparent retry attempt(s) + numRetriesSincePushback int // retries since pushback; to reset backoff + finished bool // TODO: replace with atomic cmpxchg or sync.Once? + // attempt is the active client stream attempt. + // The only place where it is written is the newAttemptLocked method and this method never writes nil. + // So, attempt can be nil only inside newClientStream function when clientStream is first created. + // One of the first things done after clientStream's creation, is to call newAttemptLocked which either + // assigns a non nil value to the attempt or returns an error. If an error is returned from newAttemptLocked, + // then newClientStream calls finish on the clientStream and returns. So, finish method is the only + // place where we need to check if the attempt is nil. + attempt *csAttempt // TODO(hedging): hedging will have multiple attempts simultaneously. committed bool // active attempt committed for retry? buffer []func(a *csAttempt) error // operations to replay on retry @@ -458,8 +475,8 @@ func (cs *clientStream) shouldRetry(err error) error { if cs.attempt.s != nil { <-cs.attempt.s.Done() } - if cs.firstAttempt && !cs.callInfo.failFast && (cs.attempt.s == nil || cs.attempt.s.Unprocessed()) { - // First attempt, wait-for-ready, stream unprocessed: transparently retry. + if cs.firstAttempt && (cs.attempt.s == nil || cs.attempt.s.Unprocessed()) { + // First attempt, stream unprocessed: transparently retry. cs.firstAttempt = false return nil } @@ -677,15 +694,13 @@ func (cs *clientStream) SendMsg(m interface{}) (err error) { if !cs.desc.ClientStreams { cs.sentLast = true } - data, err := encode(cs.codec, m) - if err != nil { - return err - } - compData, err := compress(data, cs.cp, cs.comp) + + // load hdr, payload, data + hdr, payload, data, err := prepareMsg(m, cs.codec, cs.cp, cs.comp) if err != nil { return err } - hdr, payload := msgHeader(data, compData) + // TODO(dfawley): should we be checking len(data) instead? if len(payload) > *cs.callInfo.maxSendMessageSize { return status.Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(payload), *cs.callInfo.maxSendMessageSize) @@ -808,11 +823,11 @@ func (cs *clientStream) finish(err error) { } if cs.attempt != nil { cs.attempt.finish(err) - } - // after functions all rely upon having a stream. - if cs.attempt.s != nil { - for _, o := range cs.opts { - o.after(cs.callInfo) + // after functions all rely upon having a stream. + if cs.attempt.s != nil { + for _, o := range cs.opts { + o.after(cs.callInfo) + } } } cs.cancel() @@ -967,19 +982,18 @@ func (a *csAttempt) finish(err error) { a.mu.Unlock() } -func (ac *addrConn) newClientStream(ctx context.Context, desc *StreamDesc, method string, t transport.ClientTransport, opts ...CallOption) (_ ClientStream, err error) { - ac.mu.Lock() - if ac.transport != t { - ac.mu.Unlock() - return nil, status.Error(codes.Canceled, "the provided transport is no longer valid to use") - } - // transition to CONNECTING state when an attempt starts - if ac.state != connectivity.Connecting { - ac.updateConnectivityState(connectivity.Connecting) - ac.cc.handleSubConnStateChange(ac.acbw, ac.state) - } - ac.mu.Unlock() - +// newClientStream creates a ClientStream with the specified transport, on the +// given addrConn. +// +// It's expected that the given transport is either the same one in addrConn, or +// is already closed. To avoid race, transport is specified separately, instead +// of using ac.transpot. +// +// Main difference between this and ClientConn.NewStream: +// - no retry +// - no service config (or wait for service config) +// - no tracing or stats +func newNonRetryClientStream(ctx context.Context, desc *StreamDesc, method string, t transport.ClientTransport, ac *addrConn, opts ...CallOption) (_ ClientStream, err error) { if t == nil { // TODO: return RPC error here? return nil, errors.New("transport provided is nil") @@ -987,14 +1001,6 @@ func (ac *addrConn) newClientStream(ctx context.Context, desc *StreamDesc, metho // defaultCallInfo contains unnecessary info(i.e. failfast, maxRetryRPCBufferSize), so we just initialize an empty struct. c := &callInfo{} - for _, o := range opts { - if err := o.before(c); err != nil { - return nil, toRPCErr(err) - } - } - c.maxReceiveMessageSize = getMaxSize(nil, c.maxReceiveMessageSize, defaultClientMaxReceiveMessageSize) - c.maxSendMessageSize = getMaxSize(nil, c.maxSendMessageSize, defaultServerMaxSendMessageSize) - // Possible context leak: // The cancel function for the child context we create will only be called // when RecvMsg returns a non-nil error, if the ClientConn is closed, or if @@ -1007,6 +1013,13 @@ func (ac *addrConn) newClientStream(ctx context.Context, desc *StreamDesc, metho } }() + for _, o := range opts { + if err := o.before(c); err != nil { + return nil, toRPCErr(err) + } + } + c.maxReceiveMessageSize = getMaxSize(nil, c.maxReceiveMessageSize, defaultClientMaxReceiveMessageSize) + c.maxSendMessageSize = getMaxSize(nil, c.maxSendMessageSize, defaultServerMaxSendMessageSize) if err := setCallInfoCodec(c); err != nil { return nil, err } @@ -1039,6 +1052,7 @@ func (ac *addrConn) newClientStream(ctx context.Context, desc *StreamDesc, metho callHdr.Creds = c.creds } + // Use a special addrConnStream to avoid retry. as := &addrConnStream{ callHdr: callHdr, ac: ac, @@ -1150,15 +1164,13 @@ func (as *addrConnStream) SendMsg(m interface{}) (err error) { if !as.desc.ClientStreams { as.sentLast = true } - data, err := encode(as.codec, m) - if err != nil { - return err - } - compData, err := compress(data, as.cp, as.comp) + + // load hdr, payload, data + hdr, payld, _, err := prepareMsg(m, as.codec, as.cp, as.comp) if err != nil { return err } - hdr, payld := msgHeader(data, compData) + // TODO(dfawley): should we be checking len(data) instead? if len(payld) > *as.callInfo.maxSendMessageSize { return status.Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(payld), *as.callInfo.maxSendMessageSize) @@ -1395,15 +1407,13 @@ func (ss *serverStream) SendMsg(m interface{}) (err error) { ss.t.IncrMsgSent() } }() - data, err := encode(ss.codec, m) - if err != nil { - return err - } - compData, err := compress(data, ss.cp, ss.comp) + + // load hdr, payload, data + hdr, payload, data, err := prepareMsg(m, ss.codec, ss.cp, ss.comp) if err != nil { return err } - hdr, payload := msgHeader(data, compData) + // TODO(dfawley): should we be checking len(data) instead? if len(payload) > ss.maxSendMessageSize { return status.Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(payload), ss.maxSendMessageSize) @@ -1496,3 +1506,24 @@ func (ss *serverStream) RecvMsg(m interface{}) (err error) { func MethodFromServerStream(stream ServerStream) (string, bool) { return Method(stream.Context()) } + +// prepareMsg returns the hdr, payload and data +// using the compressors passed or using the +// passed preparedmsg +func prepareMsg(m interface{}, codec baseCodec, cp Compressor, comp encoding.Compressor) (hdr, payload, data []byte, err error) { + if preparedMsg, ok := m.(*PreparedMsg); ok { + return preparedMsg.hdr, preparedMsg.payload, preparedMsg.encodedData, nil + } + // The input interface is not a prepared msg. + // Marshal and Compress the data at this point + data, err = encode(codec, m) + if err != nil { + return nil, nil, nil, err + } + compData, err := compress(data, cp, comp) + if err != nil { + return nil, nil, nil, err + } + hdr, payload = msgHeader(data, compData) + return hdr, payload, data, nil +} diff --git a/vendor/google.golang.org/grpc/version.go b/vendor/google.golang.org/grpc/version.go index 092e088258da..5411a73a22e3 100644 --- a/vendor/google.golang.org/grpc/version.go +++ b/vendor/google.golang.org/grpc/version.go @@ -19,4 +19,4 @@ package grpc // Version is the current grpc version. -const Version = "1.20.1" +const Version = "1.23.0"