content: /*
   * Copyright 2013-2023 the original author or authors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.alibaba.cloud.examples.orderly;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.function.Consumer;
  
  import com.alibaba.cloud.examples.common.SimpleMsg;
  import com.alibaba.cloud.stream.binder.rocketmq.support.RocketMQMessageConverterSupport;
  import org.apache.rocketmq.common.message.MessageConst;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.boot.ApplicationRunner;
  import org.springframework.boot.SpringApplication;
  import org.springframework.boot.autoconfigure.SpringBootApplication;
  import org.springframework.cloud.stream.function.StreamBridge;
  import org.springframework.context.annotation.Bean;
  import org.springframework.messaging.Message;
  import org.springframework.messaging.support.GenericMessage;
  /**
   * @author sorie
   */
  @SpringBootApplication
  public class RocketMQOrderlyConsumeApplication {
  	private static final Logger log = LoggerFactory
  			.getLogger(RocketMQOrderlyConsumeApplication.class);
  
  	@Autowired
  	private StreamBridge streamBridge;
  
  	/***
  	 * tag array.
  	 */
  	public static final String[] tags = new String[] {"TagA", "TagB", "TagC", "TagD", "TagE"};
  
  	public static void main(String[] args) {
  		SpringApplication.run(RocketMQOrderlyConsumeApplication.class, args);
  	}
  
  	@Bean
  	public ApplicationRunner producer() {
  		return args -> {
  			for (int i = 0; i < 100; i++) {
  				String key = "KEY" + i;
  				Map<String, Object> headers = new HashMap<>();
  				headers.put(MessageConst.PROPERTY_KEYS, key);
  				headers.put(MessageConst.PROPERTY_TAGS, tags[i % tags.length]);
  				headers.put(MessageConst.PROPERTY_ORIGIN_MESSAGE_ID, i);
  				Message<SimpleMsg> msg = new GenericMessage(new SimpleMsg("Hello RocketMQ " + i), headers);
  				streamBridge.send("producer-out-0", msg);
  			}
  		};
  	}
  
  	@Bean
  	public Consumer<Message<SimpleMsg>> consumer() {
  		return msg -> {
  			String tagHeaderKey = RocketMQMessageConverterSupport.toRocketHeaderKey(
  					MessageConst.PROPERTY_TAGS).toString();
  			log.info(Thread.currentThread().getName() + " Receive New Messages: " + msg.getPayload().getMsg() + " TAG:" +
  					msg.getHeaders().get(tagHeaderKey).toString());
  			try {
  				Thread.sleep(100);
  			}
  			catch (InterruptedException ignored) {
  			}
  		};
  	}
  
  }
  