public static class OpenCensusUtil.OpenCensusMessageReceiver implements MessageReceiverWrapper class for MessageReceiver that decodes any received trace and tag contexts and puts them in scope.
Implements
MessageReceiverConstructors
OpenCensusMessageReceiver(MessageReceiver receiver)
public OpenCensusMessageReceiver(MessageReceiver receiver)| Name | Description |
| receiver | MessageReceiver |
Methods
receiveMessage(PubsubMessage message, AckReplyConsumer consumer)
public void receiveMessage(PubsubMessage message, AckReplyConsumer consumer)Called when a message is received by the subscriber. The implementation must arrange for AckReplyConsumer#ack() or AckReplyConsumer#nack() to be called after processing the
message.
// This {@code MessageReceiver} passes all messages to a BlockingQueue. This method can
// be called concurrently from multiple threads, so it is important that the queue be
// thread-safe.
//
// This example is for illustration. Implementations may directly process messages instead of
// sending them to queues.
MessageReceiver receiver =
new MessageReceiver() {
public void receiveMessage(final PubsubMessage message, final AckReplyConsumer consumer) {
if (blockingQueue.offer(message)) {
consumer.ack();
} else {
consumer.nack();
}
}
};
| Name | Description |
| message | PubsubMessage |
| consumer | AckReplyConsumer |