ApsaraMQ for RocketMQ:Send and receive ordered messages

package com.aliyun.openservices.ons.example.order;

import com.aliyun.openservices.ons.api.Message;
import com.aliyun.openservices.ons.api.ONSFactory;
import com.aliyun.openservices.ons.api.PropertyKeyConst;
import com.aliyun.openservices.ons.api.SendResult;
import com.aliyun.openservices.ons.api.order.OrderProducer;

import java.util.Date;
import java.util.Properties;

public class ProducerClient {

    public static void main(String[] args) {
        Properties properties = new Properties();
        // Group ID created in the ApsaraMQ for RocketMQ console.
        properties.put(PropertyKeyConst.GROUP_ID, "<your-group-id>");
        // AccessKey ID for authentication.
        properties.put(PropertyKeyConst.AccessKey, "<your-access-key>");
        // AccessKey secret for authentication.
        properties.put(PropertyKeyConst.SecretKey, "<your-secret-key>");
        // TCP endpoint from the Instance Details page in the ApsaraMQ for RocketMQ console.
        properties.put(PropertyKeyConst.NAMESRV_ADDR, "<your-tcp-endpoint>");

        OrderProducer producer = ONSFactory.createOrderProducer(properties);
        // Call start() once before sending any messages.
        producer.start();

        for (int i = 0; i < 1000; i++) {
            String orderId = "biz_" + i % 10;
            Message msg = new Message(
                    // Topic for ordered messages.
                    "Order_global_topic",
                    // Tag for filtering on the broker side.
                    "TagA",
                    // Message body in binary format.
                    // Producer and consumer must agree on serialization and deserialization.
                    "send order global msg".getBytes()
            );
            // Message key -- a business identifier, ideally globally unique.
            // Use this key to look up the message in the ApsaraMQ for RocketMQ console.
            msg.setKey(orderId);

            // Sharding key -- determines the partition for ordered delivery.
            // Messages with the same sharding key are delivered in FIFO order.
            String shardingKey = String.valueOf(orderId);
            try {
                SendResult sendResult = producer.send(msg, shardingKey);
                if (sendResult != null) {
                    System.out.println(new Date() + " Send mq message success. Topic is:" + msg.getTopic() + " msgId is: " + sendResult.getMessageId());
                }
            } catch (Exception e) {
                // Handle failure: retry or persist the message for later resend.
                System.out.println(new Date() + " Send mq message failed. Topic is:" + msg.getTopic());
                e.printStackTrace();
            }
        }
        // Shut down the producer before exiting.
        // Skip this if the producer sends messages frequently.
        producer.shutdown();
    }

}

package com.aliyun.openservices.ons.example.order;

import com.aliyun.openservices.ons.api.Message;
import com.aliyun.openservices.ons.api.ONSFactory;
import com.aliyun.openservices.ons.api.PropertyKeyConst;
import com.aliyun.openservices.ons.api.order.ConsumeOrderContext;
import com.aliyun.openservices.ons.api.order.MessageOrderListener;
import com.aliyun.openservices.ons.api.order.OrderAction;
import com.aliyun.openservices.ons.api.order.OrderConsumer;

import java.util.Properties;

public class ConsumerClient {

    public static void main(String[] args) {
        Properties properties = new Properties();
        // Consumer group ID created in the ApsaraMQ for RocketMQ console.
        properties.put(PropertyKeyConst.GROUP_ID, "<your-group-id>");
        // AccessKey ID for authentication.
        properties.put(PropertyKeyConst.AccessKey, "<your-access-key>");
        // AccessKey secret for authentication.
        properties.put(PropertyKeyConst.SecretKey, "<your-secret-key>");
        // TCP endpoint from the Instance Details page in the ApsaraMQ for RocketMQ console.
        properties.put(PropertyKeyConst.NAMESRV_ADDR, "<your-tcp-endpoint>");
        // Wait time (ms) before retrying a failed ordered message. Valid values: 10 to 30,000.
        properties.put(PropertyKeyConst.SuspendTimeMillis, "100");
        // Maximum retry attempts for a failed message.
        properties.put(PropertyKeyConst.MaxReconsumeTimes, "20");

        OrderConsumer consumer = ONSFactory.createOrderedConsumer(properties);

        consumer.subscribe(
                // Topic to subscribe to.
                "Order_global_topic",
                // Tag filter expression:
                //   "*"                       -- subscribe to all tags
                //   "TagA || TagB || TagC"     -- subscribe to TagA, TagB, or TagC only
                "*",
                new MessageOrderListener() {
                    /**
                     * Return OrderAction.Success after processing the message.
                     * Return OrderAction.Suspend if processing fails or throws
                     * an exception -- the broker will retry after SuspendTimeMillis.
                     */
                    @Override
                    public OrderAction consume(Message message, ConsumeOrderContext context) {
                        System.out.println(message);
                        return OrderAction.Success;
                    }
                });

        // Call start() once to begin consuming.
        consumer.start();
    }
}