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- /*
- *
- * Copyright 2018 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 test
-
- import (
- "context"
- "reflect"
- "testing"
- "time"
-
- "google.golang.org/grpc"
- "google.golang.org/grpc/balancer"
- "google.golang.org/grpc/connectivity"
- "google.golang.org/grpc/credentials"
- "google.golang.org/grpc/grpclog"
- "google.golang.org/grpc/resolver"
- testpb "google.golang.org/grpc/test/grpc_testing"
- "google.golang.org/grpc/testdata"
- )
-
- const testBalancerName = "testbalancer"
-
- // testBalancer creates one subconn with the first address from resolved
- // addresses.
- //
- // It's used to test options for NewSubConn are applies correctly.
- type testBalancer struct {
- cc balancer.ClientConn
- sc balancer.SubConn
-
- newSubConnOptions balancer.NewSubConnOptions
- doneInfo []balancer.DoneInfo
- }
-
- func (b *testBalancer) Build(cc balancer.ClientConn, opt balancer.BuildOptions) balancer.Balancer {
- b.cc = cc
- return b
- }
-
- func (*testBalancer) Name() string {
- return testBalancerName
- }
-
- func (b *testBalancer) HandleResolvedAddrs(addrs []resolver.Address, err error) {
- // Only create a subconn at the first time.
- if err == nil && b.sc == nil {
- b.sc, err = b.cc.NewSubConn(addrs, b.newSubConnOptions)
- if err != nil {
- grpclog.Errorf("testBalancer: failed to NewSubConn: %v", err)
- return
- }
- b.cc.UpdateBalancerState(connectivity.Connecting, &picker{sc: b.sc, bal: b})
- b.sc.Connect()
- }
- }
-
- func (b *testBalancer) HandleSubConnStateChange(sc balancer.SubConn, s connectivity.State) {
- grpclog.Infof("testBalancer: HandleSubConnStateChange: %p, %v", sc, s)
- if b.sc != sc {
- grpclog.Infof("testBalancer: ignored state change because sc is not recognized")
- return
- }
- if s == connectivity.Shutdown {
- b.sc = nil
- return
- }
-
- switch s {
- case connectivity.Ready, connectivity.Idle:
- b.cc.UpdateBalancerState(s, &picker{sc: sc, bal: b})
- case connectivity.Connecting:
- b.cc.UpdateBalancerState(s, &picker{err: balancer.ErrNoSubConnAvailable, bal: b})
- case connectivity.TransientFailure:
- b.cc.UpdateBalancerState(s, &picker{err: balancer.ErrTransientFailure, bal: b})
- }
- }
-
- func (b *testBalancer) Close() {
- }
-
- type picker struct {
- err error
- sc balancer.SubConn
- bal *testBalancer
- }
-
- func (p *picker) Pick(ctx context.Context, opts balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) {
- if p.err != nil {
- return nil, nil, p.err
- }
- return p.sc, func(d balancer.DoneInfo) { p.bal.doneInfo = append(p.bal.doneInfo, d) }, nil
- }
-
- func (s) TestCredsBundleFromBalancer(t *testing.T) {
- balancer.Register(&testBalancer{
- newSubConnOptions: balancer.NewSubConnOptions{
- CredsBundle: &testCredsBundle{},
- },
- })
- te := newTest(t, env{name: "creds-bundle", network: "tcp", balancer: ""})
- te.tapHandle = authHandle
- te.customDialOptions = []grpc.DialOption{
- grpc.WithBalancerName(testBalancerName),
- }
- creds, err := credentials.NewServerTLSFromFile(testdata.Path("server1.pem"), testdata.Path("server1.key"))
- if err != nil {
- t.Fatalf("Failed to generate credentials %v", err)
- }
- te.customServerOptions = []grpc.ServerOption{
- grpc.Creds(creds),
- }
- te.startServer(&testServer{})
- defer te.tearDown()
-
- cc := te.clientConn()
- tc := testpb.NewTestServiceClient(cc)
- if _, err := tc.EmptyCall(context.Background(), &testpb.Empty{}); err != nil {
- t.Fatalf("Test failed. Reason: %v", err)
- }
- }
-
- func (s) TestDoneInfo(t *testing.T) {
- for _, e := range listTestEnv() {
- testDoneInfo(t, e)
- }
- }
-
- func testDoneInfo(t *testing.T, e env) {
- te := newTest(t, e)
- b := &testBalancer{}
- balancer.Register(b)
- te.customDialOptions = []grpc.DialOption{
- grpc.WithBalancerName(testBalancerName),
- }
- te.userAgent = failAppUA
- te.startServer(&testServer{security: e.security})
- defer te.tearDown()
-
- cc := te.clientConn()
- tc := testpb.NewTestServiceClient(cc)
-
- ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
- defer cancel()
- wantErr := detailedError
- if _, err := tc.EmptyCall(ctx, &testpb.Empty{}); !reflect.DeepEqual(err, wantErr) {
- t.Fatalf("TestService/EmptyCall(_, _) = _, %v, want _, %v", err, wantErr)
- }
- if _, err := tc.UnaryCall(ctx, &testpb.SimpleRequest{}); err != nil {
- t.Fatalf("TestService.UnaryCall(%v, _, _, _) = _, %v; want _, <nil>", ctx, err)
- }
-
- if len(b.doneInfo) < 1 || !reflect.DeepEqual(b.doneInfo[0].Err, wantErr) {
- t.Fatalf("b.doneInfo = %v; want b.doneInfo[0].Err = %v", b.doneInfo, wantErr)
- }
- if len(b.doneInfo) < 2 || !reflect.DeepEqual(b.doneInfo[1].Trailer, testTrailerMetadata) {
- t.Fatalf("b.doneInfo = %v; want b.doneInfo[1].Trailer = %v", b.doneInfo, testTrailerMetadata)
- }
- }
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