duhengforever closed pull request #510: [ISSUE478]Polish async send message
sample
URL: https://github.com/apache/rocketmq/pull/510
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diff --git
a/example/src/main/java/org/apache/rocketmq/example/simple/AsyncProducer.java
b/example/src/main/java/org/apache/rocketmq/example/simple/AsyncProducer.java
index aa15cafff..d40739c81 100644
---
a/example/src/main/java/org/apache/rocketmq/example/simple/AsyncProducer.java
+++
b/example/src/main/java/org/apache/rocketmq/example/simple/AsyncProducer.java
@@ -17,6 +17,8 @@
package org.apache.rocketmq.example.simple;
import java.io.UnsupportedEncodingException;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.client.producer.SendCallback;
@@ -32,7 +34,9 @@ public static void main(
producer.start();
producer.setRetryTimesWhenSendAsyncFailed(0);
- for (int i = 0; i < 10000000; i++) {
+ int messageCount = 100;
+ final CountDownLatch countDownLatch = new CountDownLatch(messageCount);
+ for (int i = 0; i < messageCount; i++) {
try {
final int index = i;
Message msg = new Message("Jodie_topic_1023",
@@ -42,11 +46,13 @@ public static void main(
producer.send(msg, new SendCallback() {
@Override
public void onSuccess(SendResult sendResult) {
+ countDownLatch.countDown();
System.out.printf("%-10d OK %s %n", index,
sendResult.getMsgId());
}
@Override
public void onException(Throwable e) {
+ countDownLatch.countDown();
System.out.printf("%-10d Exception %s %n", index, e);
e.printStackTrace();
}
@@ -55,6 +61,7 @@ public void onException(Throwable e) {
e.printStackTrace();
}
}
+ countDownLatch.await(5, TimeUnit.SECONDS);
producer.shutdown();
}
}
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