func create(client *pubsub.Client, topic string) error {
ctx := context.Background()
// [START create_topic]
t, err := client.CreateTopic(ctx, topic)
if err != nil {
return err
}
fmt.Printf("Topic created: %v\n", t)
// [END create_topic]
return nil
}
func createTopicIfNotExists(c *pubsub.Client) *pubsub.Topic {
ctx := context.Background()
const topic = "example-topic"
// Create a topic to subscribe to.
t := c.Topic(topic)
ok, err := t.Exists(ctx)
if err != nil {
log.Fatal(err)
}
if ok {
return t
}
t, err = c.CreateTopic(ctx, topic)
if err != nil {
log.Fatalf("Failed to create the topic: %v", err)
}
return t
}