490 строки
14 KiB
Go
490 строки
14 KiB
Go
/*
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*
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* Copyright 2014 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package grpc
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import (
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"context"
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"fmt"
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"io"
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"math"
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"net"
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"strconv"
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"strings"
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"sync"
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"testing"
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"time"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/internal/transport"
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"google.golang.org/grpc/status"
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)
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var (
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expectedRequest = "ping"
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expectedResponse = "pong"
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weirdError = "format verbs: %v%s"
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sizeLargeErr = 1024 * 1024
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canceled = 0
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)
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type testCodec struct {
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}
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func (testCodec) Marshal(v interface{}) ([]byte, error) {
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return []byte(*(v.(*string))), nil
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}
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func (testCodec) Unmarshal(data []byte, v interface{}) error {
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*(v.(*string)) = string(data)
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return nil
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}
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func (testCodec) String() string {
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return "test"
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}
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type testStreamHandler struct {
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port string
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t transport.ServerTransport
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}
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func (h *testStreamHandler) handleStream(t *testing.T, s *transport.Stream) {
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p := &parser{r: s}
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for {
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pf, req, err := p.recvMsg(math.MaxInt32)
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if err == io.EOF {
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break
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}
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if err != nil {
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return
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}
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if pf != compressionNone {
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t.Errorf("Received the mistaken message format %d, want %d", pf, compressionNone)
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return
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}
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var v string
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codec := testCodec{}
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if err := codec.Unmarshal(req, &v); err != nil {
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t.Errorf("Failed to unmarshal the received message: %v", err)
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return
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}
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if v == "weird error" {
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h.t.WriteStatus(s, status.New(codes.Internal, weirdError))
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return
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}
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if v == "canceled" {
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canceled++
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h.t.WriteStatus(s, status.New(codes.Internal, ""))
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return
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}
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if v == "port" {
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h.t.WriteStatus(s, status.New(codes.Internal, h.port))
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return
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}
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if v != expectedRequest {
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h.t.WriteStatus(s, status.New(codes.Internal, strings.Repeat("A", sizeLargeErr)))
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return
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}
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}
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// send a response back to end the stream.
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data, err := encode(testCodec{}, &expectedResponse)
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if err != nil {
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t.Errorf("Failed to encode the response: %v", err)
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return
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}
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hdr, payload := msgHeader(data, nil)
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h.t.Write(s, hdr, payload, &transport.Options{})
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h.t.WriteStatus(s, status.New(codes.OK, ""))
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}
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type server struct {
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lis net.Listener
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port string
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addr string
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startedErr chan error // sent nil or an error after server starts
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mu sync.Mutex
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conns map[transport.ServerTransport]bool
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}
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type ctxKey string
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func newTestServer() *server {
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return &server{startedErr: make(chan error, 1)}
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}
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// start starts server. Other goroutines should block on s.startedErr for further operations.
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func (s *server) start(t *testing.T, port int, maxStreams uint32) {
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var err error
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if port == 0 {
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s.lis, err = net.Listen("tcp", "localhost:0")
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} else {
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s.lis, err = net.Listen("tcp", "localhost:"+strconv.Itoa(port))
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}
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if err != nil {
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s.startedErr <- fmt.Errorf("failed to listen: %v", err)
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return
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}
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s.addr = s.lis.Addr().String()
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_, p, err := net.SplitHostPort(s.addr)
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if err != nil {
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s.startedErr <- fmt.Errorf("failed to parse listener address: %v", err)
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return
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}
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s.port = p
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s.conns = make(map[transport.ServerTransport]bool)
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s.startedErr <- nil
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for {
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conn, err := s.lis.Accept()
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if err != nil {
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return
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}
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config := &transport.ServerConfig{
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MaxStreams: maxStreams,
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}
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st, err := transport.NewServerTransport("http2", conn, config)
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if err != nil {
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continue
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}
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s.mu.Lock()
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if s.conns == nil {
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s.mu.Unlock()
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st.Close()
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return
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}
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s.conns[st] = true
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s.mu.Unlock()
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h := &testStreamHandler{
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port: s.port,
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t: st,
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}
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go st.HandleStreams(func(s *transport.Stream) {
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go h.handleStream(t, s)
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}, func(ctx context.Context, method string) context.Context {
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return ctx
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})
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}
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}
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func (s *server) wait(t *testing.T, timeout time.Duration) {
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select {
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case err := <-s.startedErr:
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if err != nil {
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t.Fatal(err)
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}
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case <-time.After(timeout):
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t.Fatalf("Timed out after %v waiting for server to be ready", timeout)
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}
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}
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func (s *server) stop() {
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s.lis.Close()
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s.mu.Lock()
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for c := range s.conns {
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c.Close()
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}
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s.conns = nil
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s.mu.Unlock()
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}
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func setUp(t *testing.T, port int, maxStreams uint32) (*server, *ClientConn) {
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return setUpWithOptions(t, port, maxStreams)
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}
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func setUpWithOptions(t *testing.T, port int, maxStreams uint32, dopts ...DialOption) (*server, *ClientConn) {
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server := newTestServer()
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go server.start(t, port, maxStreams)
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server.wait(t, 2*time.Second)
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addr := "localhost:" + server.port
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dopts = append(dopts, WithBlock(), WithInsecure(), WithCodec(testCodec{}))
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cc, err := Dial(addr, dopts...)
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if err != nil {
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t.Fatalf("Failed to create ClientConn: %v", err)
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}
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return server, cc
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}
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func (s) TestUnaryClientInterceptor(t *testing.T) {
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parentKey := ctxKey("parentKey")
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interceptor := func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, invoker UnaryInvoker, opts ...CallOption) error {
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if ctx.Value(parentKey) == nil {
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t.Fatalf("interceptor should have %v in context", parentKey)
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}
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return invoker(ctx, method, req, reply, cc, opts...)
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}
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server, cc := setUpWithOptions(t, 0, math.MaxUint32, WithUnaryInterceptor(interceptor))
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defer func() {
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cc.Close()
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server.stop()
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}()
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var reply string
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ctx := context.Background()
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parentCtx := context.WithValue(ctx, ctxKey("parentKey"), 0)
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if err := cc.Invoke(parentCtx, "/foo/bar", &expectedRequest, &reply); err != nil || reply != expectedResponse {
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t.Fatalf("grpc.Invoke(_, _, _, _, _) = %v, want <nil>", err)
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}
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}
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func (s) TestChainUnaryClientInterceptor(t *testing.T) {
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var (
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parentKey = ctxKey("parentKey")
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firstIntKey = ctxKey("firstIntKey")
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secondIntKey = ctxKey("secondIntKey")
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)
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firstInt := func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, invoker UnaryInvoker, opts ...CallOption) error {
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if ctx.Value(parentKey) == nil {
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t.Fatalf("first interceptor should have %v in context", parentKey)
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}
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if ctx.Value(firstIntKey) != nil {
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t.Fatalf("first interceptor should not have %v in context", firstIntKey)
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}
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if ctx.Value(secondIntKey) != nil {
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t.Fatalf("first interceptor should not have %v in context", secondIntKey)
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}
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firstCtx := context.WithValue(ctx, firstIntKey, 1)
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err := invoker(firstCtx, method, req, reply, cc, opts...)
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*(reply.(*string)) += "1"
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return err
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}
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secondInt := func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, invoker UnaryInvoker, opts ...CallOption) error {
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if ctx.Value(parentKey) == nil {
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t.Fatalf("second interceptor should have %v in context", parentKey)
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}
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if ctx.Value(firstIntKey) == nil {
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t.Fatalf("second interceptor should have %v in context", firstIntKey)
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}
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if ctx.Value(secondIntKey) != nil {
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t.Fatalf("second interceptor should not have %v in context", secondIntKey)
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}
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secondCtx := context.WithValue(ctx, secondIntKey, 2)
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err := invoker(secondCtx, method, req, reply, cc, opts...)
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*(reply.(*string)) += "2"
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return err
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}
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lastInt := func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, invoker UnaryInvoker, opts ...CallOption) error {
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if ctx.Value(parentKey) == nil {
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t.Fatalf("last interceptor should have %v in context", parentKey)
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}
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if ctx.Value(firstIntKey) == nil {
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t.Fatalf("last interceptor should have %v in context", firstIntKey)
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}
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if ctx.Value(secondIntKey) == nil {
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t.Fatalf("last interceptor should have %v in context", secondIntKey)
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}
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err := invoker(ctx, method, req, reply, cc, opts...)
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*(reply.(*string)) += "3"
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return err
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}
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server, cc := setUpWithOptions(t, 0, math.MaxUint32, WithChainUnaryInterceptor(firstInt, secondInt, lastInt))
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defer func() {
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cc.Close()
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server.stop()
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}()
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var reply string
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ctx := context.Background()
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parentCtx := context.WithValue(ctx, ctxKey("parentKey"), 0)
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if err := cc.Invoke(parentCtx, "/foo/bar", &expectedRequest, &reply); err != nil || reply != expectedResponse+"321" {
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t.Fatalf("grpc.Invoke(_, _, _, _, _) = %v, want <nil>", err)
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}
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}
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func (s) TestChainOnBaseUnaryClientInterceptor(t *testing.T) {
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var (
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parentKey = ctxKey("parentKey")
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baseIntKey = ctxKey("baseIntKey")
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)
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baseInt := func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, invoker UnaryInvoker, opts ...CallOption) error {
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if ctx.Value(parentKey) == nil {
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t.Fatalf("base interceptor should have %v in context", parentKey)
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}
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if ctx.Value(baseIntKey) != nil {
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t.Fatalf("base interceptor should not have %v in context", baseIntKey)
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}
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baseCtx := context.WithValue(ctx, baseIntKey, 1)
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return invoker(baseCtx, method, req, reply, cc, opts...)
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}
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chainInt := func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, invoker UnaryInvoker, opts ...CallOption) error {
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if ctx.Value(parentKey) == nil {
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t.Fatalf("chain interceptor should have %v in context", parentKey)
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}
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if ctx.Value(baseIntKey) == nil {
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t.Fatalf("chain interceptor should have %v in context", baseIntKey)
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}
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return invoker(ctx, method, req, reply, cc, opts...)
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}
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server, cc := setUpWithOptions(t, 0, math.MaxUint32, WithUnaryInterceptor(baseInt), WithChainUnaryInterceptor(chainInt))
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defer func() {
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cc.Close()
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server.stop()
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}()
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var reply string
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ctx := context.Background()
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parentCtx := context.WithValue(ctx, ctxKey("parentKey"), 0)
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if err := cc.Invoke(parentCtx, "/foo/bar", &expectedRequest, &reply); err != nil || reply != expectedResponse {
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t.Fatalf("grpc.Invoke(_, _, _, _, _) = %v, want <nil>", err)
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}
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}
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func (s) TestChainStreamClientInterceptor(t *testing.T) {
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var (
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parentKey = ctxKey("parentKey")
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firstIntKey = ctxKey("firstIntKey")
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secondIntKey = ctxKey("secondIntKey")
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)
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firstInt := func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, streamer Streamer, opts ...CallOption) (ClientStream, error) {
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if ctx.Value(parentKey) == nil {
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t.Fatalf("first interceptor should have %v in context", parentKey)
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}
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if ctx.Value(firstIntKey) != nil {
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t.Fatalf("first interceptor should not have %v in context", firstIntKey)
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}
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if ctx.Value(secondIntKey) != nil {
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t.Fatalf("first interceptor should not have %v in context", secondIntKey)
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}
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firstCtx := context.WithValue(ctx, firstIntKey, 1)
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return streamer(firstCtx, desc, cc, method, opts...)
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}
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secondInt := func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, streamer Streamer, opts ...CallOption) (ClientStream, error) {
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if ctx.Value(parentKey) == nil {
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t.Fatalf("second interceptor should have %v in context", parentKey)
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}
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if ctx.Value(firstIntKey) == nil {
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t.Fatalf("second interceptor should have %v in context", firstIntKey)
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}
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if ctx.Value(secondIntKey) != nil {
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t.Fatalf("second interceptor should not have %v in context", secondIntKey)
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}
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secondCtx := context.WithValue(ctx, secondIntKey, 2)
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return streamer(secondCtx, desc, cc, method, opts...)
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}
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lastInt := func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, streamer Streamer, opts ...CallOption) (ClientStream, error) {
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if ctx.Value(parentKey) == nil {
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t.Fatalf("last interceptor should have %v in context", parentKey)
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}
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if ctx.Value(firstIntKey) == nil {
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t.Fatalf("last interceptor should have %v in context", firstIntKey)
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}
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if ctx.Value(secondIntKey) == nil {
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t.Fatalf("last interceptor should have %v in context", secondIntKey)
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}
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return streamer(ctx, desc, cc, method, opts...)
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}
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server, cc := setUpWithOptions(t, 0, math.MaxUint32, WithChainStreamInterceptor(firstInt, secondInt, lastInt))
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defer func() {
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cc.Close()
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server.stop()
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}()
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ctx := context.Background()
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parentCtx := context.WithValue(ctx, ctxKey("parentKey"), 0)
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_, err := cc.NewStream(parentCtx, &StreamDesc{}, "/foo/bar")
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if err != nil {
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t.Fatalf("grpc.NewStream(_, _, _) = %v, want <nil>", err)
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}
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}
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func (s) TestInvoke(t *testing.T) {
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server, cc := setUp(t, 0, math.MaxUint32)
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var reply string
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if err := cc.Invoke(context.Background(), "/foo/bar", &expectedRequest, &reply); err != nil || reply != expectedResponse {
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t.Fatalf("grpc.Invoke(_, _, _, _, _) = %v, want <nil>", err)
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}
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cc.Close()
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server.stop()
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}
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func (s) TestInvokeLargeErr(t *testing.T) {
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server, cc := setUp(t, 0, math.MaxUint32)
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var reply string
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req := "hello"
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err := cc.Invoke(context.Background(), "/foo/bar", &req, &reply)
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if _, ok := status.FromError(err); !ok {
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t.Fatalf("grpc.Invoke(_, _, _, _, _) receives non rpc error.")
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}
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if status.Code(err) != codes.Internal || len(errorDesc(err)) != sizeLargeErr {
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t.Fatalf("grpc.Invoke(_, _, _, _, _) = %v, want an error of code %d and desc size %d", err, codes.Internal, sizeLargeErr)
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}
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cc.Close()
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server.stop()
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}
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// TestInvokeErrorSpecialChars checks that error messages don't get mangled.
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func (s) TestInvokeErrorSpecialChars(t *testing.T) {
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server, cc := setUp(t, 0, math.MaxUint32)
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var reply string
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req := "weird error"
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err := cc.Invoke(context.Background(), "/foo/bar", &req, &reply)
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if _, ok := status.FromError(err); !ok {
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t.Fatalf("grpc.Invoke(_, _, _, _, _) receives non rpc error.")
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}
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if got, want := errorDesc(err), weirdError; got != want {
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t.Fatalf("grpc.Invoke(_, _, _, _, _) error = %q, want %q", got, want)
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}
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cc.Close()
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server.stop()
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}
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// TestInvokeCancel checks that an Invoke with a canceled context is not sent.
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func (s) TestInvokeCancel(t *testing.T) {
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server, cc := setUp(t, 0, math.MaxUint32)
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var reply string
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req := "canceled"
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for i := 0; i < 100; i++ {
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ctx, cancel := context.WithCancel(context.Background())
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cancel()
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cc.Invoke(ctx, "/foo/bar", &req, &reply)
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}
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if canceled != 0 {
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t.Fatalf("received %d of 100 canceled requests", canceled)
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}
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cc.Close()
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server.stop()
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}
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// TestInvokeCancelClosedNonFail checks that a canceled non-failfast RPC
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// on a closed client will terminate.
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func (s) TestInvokeCancelClosedNonFailFast(t *testing.T) {
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server, cc := setUp(t, 0, math.MaxUint32)
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var reply string
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cc.Close()
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req := "hello"
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ctx, cancel := context.WithCancel(context.Background())
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cancel()
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if err := cc.Invoke(ctx, "/foo/bar", &req, &reply, WaitForReady(true)); err == nil {
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t.Fatalf("canceled invoke on closed connection should fail")
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}
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server.stop()
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}
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