// Queue the message in the given topic
func (m *Message) Queue(topic *pubsub.Topic) error {
data, err := json.Marshal(m)
if err != nil {
return err
}
msgIds, err := topic.Publish(context.Background(), &pubsub.Message{
Data: data,
})
if err != nil {
return err
}
glog.Infof("Published to topic (%s): %s", topic.String(), msgIds)
return nil
}
func pullMsgs(client *pubsub.Client, name string, topic *pubsub.Topic) error {
ctx := context.Background()
// publish 10 messages on the topic.
for i := 0; i < 10; i++ {
_, err := topic.Publish(ctx, &pubsub.Message{
Data: []byte(fmt.Sprintf("hello world #%d", i)),
})
if err != nil {
return err
}
}
// [START pull_messages]
sub := client.Subscription(name)
it, err := sub.Pull(ctx)
if err != nil {
return err
}
defer it.Stop()
// Consume 10 messages.
for i := 0; i < 10; i++ {
msg, err := it.Next()
if err == iterator.Done {
break
}
if err != nil {
return err
}
fmt.Printf("Got message: %q\n", string(msg.Data))
msg.Done(true)
}
// [END pull_messages]
return nil
}