279 lines
7.2 KiB
Go
279 lines
7.2 KiB
Go
/*
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*
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* Copyright 2014, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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package grpc
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import (
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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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"golang.org/x/net/context"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/transport"
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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()
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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, 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, 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, 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, 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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reply, err := encode(testCodec{}, &expectedResponse, nil, nil)
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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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h.t.Write(s, reply, &transport.Options{})
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h.t.WriteStatus(s, 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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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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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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_, p, err := net.SplitHostPort(s.lis.Addr().String())
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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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st, err := transport.NewServerTransport("http2", conn, maxStreams, nil)
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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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})
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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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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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cc, err := Dial(addr, WithBlock(), WithInsecure(), WithCodec(testCodec{}))
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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 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 := Invoke(context.Background(), "/foo/bar", &expectedRequest, &reply, cc); 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 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 := Invoke(context.Background(), "/foo/bar", &req, &reply, cc)
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if _, ok := err.(*rpcError); !ok {
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t.Fatalf("grpc.Invoke(_, _, _, _, _) receives non rpc error.")
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}
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if 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 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 := Invoke(context.Background(), "/foo/bar", &req, &reply, cc)
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if _, ok := err.(*rpcError); !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 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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Invoke(ctx, "/foo/bar", &req, &reply, cc)
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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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