RongtongJin commented on a change in pull request #209: [ISSUE #208]support
request/reply model in rocketmq-spring
URL: https://github.com/apache/rocketmq-spring/pull/209#discussion_r363581165
##########
File path:
rocketmq-spring-boot-samples/rocketmq-produce-demo/src/main/java/org/apache/rocketmq/samples/springboot/ProducerApplication.java
##########
@@ -116,6 +128,44 @@ public void onException(Throwable var1) {
// Send transactional messages using extRocketMQTemplate
testExtRocketMQTemplateTransaction();
+
+ // send request in sync mode and receive a reply of String type.
+ String replyString =
rocketMQTemplate.sendAndReceive(stringRequestTopic, "request string",
String.class);
+ System.out.printf("send %s and receive %s %n", "request string",
replyString);
+
+ // send request in sync mode with timeout parameter and receive a
reply of byte[] type.
+ byte[] replyBytes = rocketMQTemplate.sendAndReceive(bytesRequestTopic,
new Message<String>() {
+ @Override public String getPayload() {
+ return "request byte[]";
+ }
+
+ @Override public MessageHeaders getHeaders() {
+ return null;
+ }
+ }, byte[].class, 3000);
+ System.out.printf("send %s and receive %s %n", "request byte[]",
replyBytes.toString());
+
+ // send request in sync mode with hashKey parameter and receive a
reply of User type.
+ User requestUser = new User().setUserAge(Byte.valueOf((byte)
9)).setUserName("requestUserName");
+ User replyUser = rocketMQTemplate.sendAndReceive(objectRequestTopic,
requestUser, User.class, "order-id");
+ System.out.printf("send %s and receive %s %n", requestUser, replyUser);
+ // send request in sync mode with timeout and delayLevel parameter
parameter and receive a reply of generic type.
+ ProductWithPayload<String> replyGenericObject =
rocketMQTemplate.sendAndReceive(genericRequestTopic, "request generic",
+ new TypeReference<ProductWithPayload<String>>() {
+ }.getType(), 30000, 2);
+ System.out.printf("send %s and receive %s %n", "request generic",
replyGenericObject);
+
+ // send request in async mode and receive a reply of String type.
+ rocketMQTemplate.sendAndReceive(stringRequestTopic, "request string",
new RequestCallback() {
+ @Override public void
onSuccess(org.apache.rocketmq.common.message.Message message) {
+ System.out.print("receive reply content in callback: " +
message.toString());
+ }
+
+ @Override public void onException(Throwable e) {
+ e.printStackTrace();
+ }
+ });
Review comment:
[Important] we need to switch RequestCallback, because rocketmq message
expose to users.
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