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// Copyright 2016 Google LLC
//
// 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 pubsub
import (
"bytes"
"context"
"fmt"
"testing"
"time"
"cloud.google.com/go/internal/testutil"
"google.golang.org/api/iterator"
"google.golang.org/api/option"
"google.golang.org/api/support/bundler"
pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
func checkTopicListing(t *testing.T, c *Client, want []string) {
topics, err := slurpTopics(c.Topics(context.Background()))
if err != nil {
t.Fatalf("error listing topics: %v", err)
}
var got []string
for _, topic := range topics {
got = append(got, topic.ID())
}
if !testutil.Equal(got, want) {
t.Errorf("topic list: got: %v, want: %v", got, want)
}
}
// All returns the remaining topics from this iterator.
func slurpTopics(it *TopicIterator) ([]*Topic, error) {
var topics []*Topic
for {
switch topic, err := it.Next(); err {
case nil:
topics = append(topics, topic)
case iterator.Done:
return topics, nil
default:
return nil, err
}
}
}
func TestTopicID(t *testing.T) {
const id = "id"
c, srv := newFake(t)
defer c.Close()
defer srv.Close()
s := c.Topic(id)
if got, want := s.ID(), id; got != want {
t.Errorf("Topic.ID() = %q; want %q", got, want)
}
}
func TestCreateTopicWithConfig(t *testing.T) {
c, srv := newFake(t)
defer c.Close()
defer srv.Close()
id := "test-topic"
want := TopicConfig{
Labels: map[string]string{"label": "value"},
MessageStoragePolicy: MessageStoragePolicy{
AllowedPersistenceRegions: []string{"us-east1"},
},
KMSKeyName: "projects/P/locations/L/keyRings/R/cryptoKeys/K",
}
topic := mustCreateTopicWithConfig(t, c, id, &want)
got, err := topic.Config(context.Background())
if err != nil {
t.Fatalf("error getting topic config: %v", err)
}
if !testutil.Equal(got, want) {
t.Errorf("got %v, want %v", got, want)
}
}
func TestListTopics(t *testing.T) {
c, srv := newFake(t)
defer c.Close()
defer srv.Close()
var ids []string
for i := 1; i <= 4; i++ {
id := fmt.Sprintf("t%d", i)
ids = append(ids, id)
mustCreateTopic(t, c, id)
}
checkTopicListing(t, c, ids)
}
func TestListCompletelyEmptyTopics(t *testing.T) {
c, srv := newFake(t)
defer c.Close()
defer srv.Close()
checkTopicListing(t, c, nil)
}
func TestStopPublishOrder(t *testing.T) {
// Check that Stop doesn't panic if called before Publish.
// Also that Publish after Stop returns the right error.
ctx := context.Background()
c := &Client{projectID: "projid"}
topic := c.Topic("t")
topic.Stop()
r := topic.Publish(ctx, &Message{})
_, err := r.Get(ctx)
if err != errTopicStopped {
t.Errorf("got %v, want errTopicStopped", err)
}
}
func TestPublishTimeout(t *testing.T) {
ctx := context.Background()
serv, err := testutil.NewServer()
if err != nil {
t.Fatal(err)
}
pubsubpb.RegisterPublisherServer(serv.Gsrv, &alwaysFailPublish{})
serv.Start()
conn, err := grpc.Dial(serv.Addr, grpc.WithInsecure())
if err != nil {
t.Fatal(err)
}
c, err := NewClient(ctx, "projectID", option.WithGRPCConn(conn))
if err != nil {
t.Fatal(err)
}
topic := c.Topic("t")
topic.PublishSettings.Timeout = 3 * time.Second
r := topic.Publish(ctx, &Message{})
defer topic.Stop()
select {
case <-r.Ready():
_, err = r.Get(ctx)
if err != context.DeadlineExceeded {
t.Fatalf("got %v, want context.DeadlineExceeded", err)
}
case <-time.After(2 * topic.PublishSettings.Timeout):
t.Fatal("timed out")
}
}
func TestPublishBufferedByteLimit(t *testing.T) {
ctx := context.Background()
client, srv := newFake(t)
defer client.Close()
defer srv.Close()
topic := mustCreateTopic(t, client, "topic-small-buffered-byte-limit")
defer topic.Stop()
// Test setting BufferedByteLimit to small number of bytes that should fail.
topic.PublishSettings.BufferedByteLimit = 100
const messageSizeBytes = 1000
msg := &Message{Data: bytes.Repeat([]byte{'A'}, int(messageSizeBytes))}
res := topic.Publish(ctx, msg)
_, err := res.Get(ctx)
if err != bundler.ErrOverflow {
t.Errorf("got %v, want ErrOverflow", err)
}
}
func TestUpdateTopic_Label(t *testing.T) {
ctx := context.Background()
client, srv := newFake(t)
defer client.Close()
defer srv.Close()
topic := mustCreateTopic(t, client, "T")
config, err := topic.Config(ctx)
if err != nil {
t.Fatal(err)
}
want := TopicConfig{}
if !testutil.Equal(config, want) {
t.Errorf("got %+v, want %+v", config, want)
}
// replace labels
labels := map[string]string{"label": "value"}
config2, err := topic.Update(ctx, TopicConfigToUpdate{
Labels: labels,
})
if err != nil {
t.Fatal(err)
}
want = TopicConfig{
Labels: labels,
}
if !testutil.Equal(config2, want) {
t.Errorf("got %+v, want %+v", config2, want)
}
// delete all labels
labels = map[string]string{}
config3, err := topic.Update(ctx, TopicConfigToUpdate{Labels: labels})
if err != nil {
t.Fatal(err)
}
want.Labels = nil
if !testutil.Equal(config3, want) {
t.Errorf("got %+v, want %+v", config3, want)
}
}
func TestUpdateTopic_MessageStoragePolicy(t *testing.T) {
ctx := context.Background()
client, srv := newFake(t)
defer client.Close()
defer srv.Close()
topic := mustCreateTopic(t, client, "T")
config, err := topic.Config(ctx)
if err != nil {
t.Fatal(err)
}
want := TopicConfig{}
if !testutil.Equal(config, want) {
t.Errorf("\ngot %+v\nwant %+v", config, want)
}
// Update message storage policy.
msp := &MessageStoragePolicy{
AllowedPersistenceRegions: []string{"us-east1"},
}
config2, err := topic.Update(ctx, TopicConfigToUpdate{MessageStoragePolicy: msp})
if err != nil {
t.Fatal(err)
}
want.MessageStoragePolicy = MessageStoragePolicy{
AllowedPersistenceRegions: []string{"us-east1"},
}
if !testutil.Equal(config2, want) {
t.Errorf("\ngot %+v\nwant %+v", config2, want)
}
}
type alwaysFailPublish struct {
pubsubpb.PublisherServer
}
func (s *alwaysFailPublish) Publish(ctx context.Context, req *pubsubpb.PublishRequest) (*pubsubpb.PublishResponse, error) {
return nil, status.Errorf(codes.Unavailable, "try again")
}
func mustCreateTopic(t *testing.T, c *Client, id string) *Topic {
topic, err := c.CreateTopic(context.Background(), id)
if err != nil {
t.Fatal(err)
}
return topic
}
func mustCreateTopicWithConfig(t *testing.T, c *Client, id string, tc *TopicConfig) *Topic {
if tc == nil {
return mustCreateTopic(t, c, id)
}
topic, err := c.CreateTopicWithConfig(context.Background(), id, tc)
if err != nil {
t.Fatal(err)
}
return topic
}