io.openmessaging.consumer.PullConsumer Java Examples

public static void main(String[] args) {
    //Load and start the vendor implementation from a specific OMS driver URL.
    final MessagingAccessPoint messagingAccessPoint =
        OMS.getMessagingAccessPoint("oms:rocketmq://[email protected]/us-east");

    //Start a PullConsumer to receive messages from the specific queue.
    final PullConsumer consumer = messagingAccessPoint.createPullConsumer();

    //Register a shutdown hook to close the opened endpoints.
    Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
        @Override
        public void run() {
            consumer.stop();
        }
    }));

    consumer.bindQueue(Arrays.asList("NS://HELLO_QUEUE"));
    consumer.start();

    Message message = consumer.receive(1000);
    System.out.println("Received message: " + message);
    //Acknowledge the consumed message
    consumer.ack(message.getMessageReceipt());
    consumer.stop();

}
 

public WorkerSinkTask(String connectorName,
                      SinkTask sinkTask,
                      ConnectKeyValue taskConfig,
                      Converter recordConverter,
                      PullConsumer consumer) {
    this.connectorName = connectorName;
    this.sinkTask = sinkTask;
    this.taskConfig = taskConfig;
    this.isStopping = new AtomicBoolean(false);
    this.consumer = consumer;
    this.recordConverter = recordConverter;
}
 

@Override
public PullConsumer createPullConsumer(KeyValue attributes) {
    return new PullConsumerImpl(OMSUtil.buildKeyValue(this.accessPointProperties, attributes));
}
 

public static void main(String[] args) {
    final MessagingAccessPoint messagingAccessPoint =
        OMS.getMessagingAccessPoint("oms:rocketmq://localhost:9876/default:default");

    messagingAccessPoint.startup();

    final Producer producer = messagingAccessPoint.createProducer();

    final PullConsumer consumer = messagingAccessPoint.createPullConsumer(
        OMS.newKeyValue().put(OMSBuiltinKeys.CONSUMER_ID, "OMS_CONSUMER"));

    messagingAccessPoint.startup();
    System.out.printf("MessagingAccessPoint startup OK%n");

    final String queueName = "TopicTest";

    producer.startup();
    Message msg = producer.createBytesMessage(queueName, "Hello Open Messaging".getBytes());
    SendResult sendResult = producer.send(msg);
    System.out.printf("Send Message OK. MsgId: %s%n", sendResult.messageId());
    producer.shutdown();

    consumer.attachQueue(queueName);

    consumer.startup();
    System.out.printf("Consumer startup OK%n");

    // Keep running until we find the one that has just been sent
    boolean stop = false;
    while (!stop) {
        Message message = consumer.receive();
        if (message != null) {
            String msgId = message.sysHeaders().getString(Message.BuiltinKeys.MESSAGE_ID);
            System.out.printf("Received one message: %s%n", msgId);
            consumer.ack(msgId);

            if (!stop) {
                stop = msgId.equalsIgnoreCase(sendResult.messageId());
            }

        } else {
            System.out.printf("Return without any message%n");
        }
    }

    consumer.shutdown();
    messagingAccessPoint.shutdown();
}
 

@Override
public PullConsumer createPullConsumer() {
    return new PullConsumerImpl(accessPointProperties);
}
 

@Override
public PullConsumer detachQueue(String queueName) {
    this.rocketmqPullConsumer.getRegisterTopics().remove(queueName);
    return this;
}
 

@Override
public PullConsumer attachQueue(String queueName, KeyValue attributes) {
    registerPullTaskCallback(queueName);
    return this;
}
 

@Override
public PullConsumer attachQueue(String queueName) {
    registerPullTaskCallback(queueName);
    return this;
}
 

public static void main(String[] args) {
    final MessagingAccessPoint messagingAccessPoint =
        OMS.getMessagingAccessPoint("oms:rocketmq://localhost:9876/default:default");

    messagingAccessPoint.startup();

    final Producer producer = messagingAccessPoint.createProducer();

    final PullConsumer consumer = messagingAccessPoint.createPullConsumer(
        OMS.newKeyValue().put(OMSBuiltinKeys.CONSUMER_ID, "OMS_CONSUMER"));

    messagingAccessPoint.startup();
    System.out.printf("MessagingAccessPoint startup OK%n");

    final String queueName = "TopicTest";

    producer.startup();
    Message msg = producer.createBytesMessage(queueName, "Hello Open Messaging".getBytes());
    SendResult sendResult = producer.send(msg);
    System.out.printf("Send Message OK. MsgId: %s%n", sendResult.messageId());
    producer.shutdown();

    consumer.attachQueue(queueName);

    consumer.startup();
    System.out.printf("Consumer startup OK%n");

    // Keep running until we find the one that has just been sent
    boolean stop = false;
    while (!stop) {
        Message message = consumer.receive();
        if (message != null) {
            String msgId = message.sysHeaders().getString(Message.BuiltinKeys.MESSAGE_ID);
            System.out.printf("Received one message: %s%n", msgId);
            consumer.ack(msgId);

            if (!stop) {
                stop = msgId.equalsIgnoreCase(sendResult.messageId());
            }

        } else {
            System.out.printf("Return without any message%n");
        }
    }

    consumer.shutdown();
    messagingAccessPoint.shutdown();
}
 

@Override
public PullConsumer createPullConsumer(KeyValue attributes) {
    return null;
}
 

@Override
public PullConsumer createPullConsumer() {
    return null;
}
 

@Override
public PullConsumer createPullConsumer(KeyValue attributes) {
    return new PullConsumerImpl(OMSUtil.buildKeyValue(this.accessPointProperties, attributes));
}
 

@Override
public PullConsumer createPullConsumer() {
    return new PullConsumerImpl(accessPointProperties);
}
 

@Override
public PullConsumer detachQueue(String queueName) {
    this.rocketmqPullConsumer.getRegisterTopics().remove(queueName);
    return this;
}
 

@Override
public PullConsumer attachQueue(String queueName, KeyValue attributes) {
    registerPullTaskCallback(queueName);
    return this;
}
 

@Override
public PullConsumer attachQueue(String queueName) {
    registerPullTaskCallback(queueName);
    return this;
}
 

public static void main(String[] args) {
    final MessagingAccessPoint messagingAccessPoint =
        OMS.getMessagingAccessPoint("oms:rocketmq://localhost:9876/default:default");

    messagingAccessPoint.startup();

    final Producer producer = messagingAccessPoint.createProducer();

    final PullConsumer consumer = messagingAccessPoint.createPullConsumer(
        OMS.newKeyValue().put(OMSBuiltinKeys.CONSUMER_ID, "OMS_CONSUMER"));

    messagingAccessPoint.startup();
    System.out.printf("MessagingAccessPoint startup OK%n");

    final String queueName = "TopicTest";

    producer.startup();
    Message msg = producer.createBytesMessage(queueName, "Hello Open Messaging".getBytes());
    SendResult sendResult = producer.send(msg);
    System.out.printf("Send Message OK. MsgId: %s%n", sendResult.messageId());
    producer.shutdown();

    consumer.attachQueue(queueName);

    consumer.startup();
    System.out.printf("Consumer startup OK%n");

    // Keep running until we find the one that has just been sent
    boolean stop = false;
    while (!stop) {
        Message message = consumer.receive();
        if (message != null) {
            String msgId = message.sysHeaders().getString(Message.BuiltinKeys.MESSAGE_ID);
            System.out.printf("Received one message: %s%n", msgId);
            consumer.ack(msgId);

            if (!stop) {
                stop = msgId.equalsIgnoreCase(sendResult.messageId());
            }

        } else {
            System.out.printf("Return without any message%n");
        }
    }

    consumer.shutdown();
    messagingAccessPoint.shutdown();
}
 

@Override
public PullConsumer createPullConsumer(KeyValue attributes) {
    return new PullConsumerImpl(OMSUtil.buildKeyValue(this.accessPointProperties, attributes));
}
 

@Override
public PullConsumer createPullConsumer() {
    return new PullConsumerImpl(accessPointProperties);
}
 

@Override
public PullConsumer detachQueue(String queueName) {
    this.rocketmqPullConsumer.getRegisterTopics().remove(queueName);
    return this;
}
 

@Override
public PullConsumer attachQueue(String queueName, KeyValue attributes) {
    registerPullTaskCallback(queueName);
    return this;
}
 

@Override
public PullConsumer attachQueue(String queueName) {
    registerPullTaskCallback(queueName);
    return this;
}
 

/**
 * Creates a new {@code PullConsumer} for the specified {@code MessagingAccessPoint}.
 *
 * @return the created {@code PullConsumer}
 * @throws OMSRuntimeException if the {@code MessagingAccessPoint} fails to handle this request
 * due to some internal error
 */
PullConsumer createPullConsumer();
 

/**
 * Creates a new {@code PullConsumer} for the specified {@code MessagingAccessPoint}.
 *
 * @return the created {@code PullConsumer}
 * @throws OMSRuntimeException if the {@code MessagingAccessPoint} fails to handle this request
 * due to some internal error
 */
PullConsumer createPullConsumer(KeyValue attributes);