// Setup prepares the peer for testing.
func (c *Peer) Setup() {
buffer := make([]*pubsub.Message, bufferSize)
go func() {
i := 0
for {
select {
case msg := <-c.send:
buffer[i] = &pubsub.Message{Data: msg}
i++
if i == bufferSize {
if _, err := pubsub.Publish(c.context, topic, buffer...); err != nil {
c.errors <- err
}
i = 0
}
case <-c.done:
if i > 0 {
if _, err := pubsub.Publish(c.context, topic, buffer[0:i]...); err != nil {
c.errors <- err
}
}
c.flush <- true
return
}
}
}()
}
// PublishRaw will publish the message to GCP pubsub.
func (p publisher) PublishRaw(ctx context.Context, key string, m []byte) error {
_, err := gpubsub.Publish(ctx, p.topic, &gpubsub.Message{
Data: m,
Attributes: map[string]string{"key": key},
})
return err
}
func ExamplePublish() {
ctx := Example_auth()
msgIDs, err := pubsub.Publish(ctx, "topic1", &pubsub.Message{
Data: []byte("hello world"),
})
if err != nil {
log.Fatal(err)
}
log.Printf("Published a message with a message id: %s\n", msgIDs[0])
}
func publish(ctx context.Context, argv []string) {
checkArgs(argv, 3)
topic := argv[1]
message := argv[2]
msgIDs, err := pubsub.Publish(ctx, topic, &pubsub.Message{
Data: []byte(message),
})
if err != nil {
log.Fatalf("Publish failed, %v", err)
}
fmt.Printf("Message '%s' published to a topic %s and the message id is %s\n", message, topic, msgIDs[0])
}
func publish(message string) {
// Publish "hello world" on topic1.
msgIDs, err := pubsub.Publish(getCtx(), "livefeed", &pubsub.Message{
Data: []byte(message),
})
if err != nil {
log.Println(err)
tracelog.Error(err, `Error publishing to pubsub`, `publish`)
} else {
tracelog.Info(msgIDs[0], "publish", "Message stored in pubsub")
}
}
func publishHandler(w http.ResponseWriter, r *http.Request) {
msg := &pubsub.Message{
Data: []byte(r.FormValue("payload")),
}
if _, err := pubsub.Publish(pubsubCtx, topic, msg); err != nil {
http.Error(w, fmt.Sprintf("Could not publish message: %v", err), 500)
return
}
fmt.Fprint(w, "Message published.")
}
// publishUpdate notifies Pub/Sub subscribers that the book identified with
// the given ID has been added/modified.
func publishUpdate(bookID int64) {
if !bookshelf.PubSubEnabled() {
return
}
pubSubCtx, err := bookshelf.PubSubCtx()
if err != nil {
log.Print(err)
return
}
b, err := json.Marshal(bookID)
if err != nil {
return
}
_, err = pubsub.Publish(pubSubCtx, bookshelf.PubSubTopic, &pubsub.Message{
Data: b,
})
log.Printf("Published update to Pub/Sub for Book ID %d: %v", bookID, err)
}
func publishLoop(ctx context.Context, topic string, workerid int, result chan<- int) {
var r uint64
for {
msgs := make([]*pubsub.Message, *size)
for i := 0; i < *size; i++ {
msgs[i] = &pubsub.Message{
Data: []byte(fmt.Sprintf("Worker: %d, Round: %d, Message: %d", workerid, r, i)),
}
}
_, err := pubsub.Publish(ctx, topic, msgs...)
if err != nil {
log.Printf("Publish failed, %v\n", err)
return
}
r++
if *reportMPS {
result <- *size
}
}
}