Polish Spring Cloud Bus

spring-cloud-alibaba-examples/spring-cloud-bus-rocketmq-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/rocketmq/RocketMQBusApplication.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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
+ *
+ *     http://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 org.springframework.cloud.alibaba.cloud.examples.rocketmq;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.ApplicationRunner;
+import org.springframework.boot.WebApplicationType;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.cloud.bus.jackson.RemoteApplicationEventScan;
+import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.event.EventListener;
+
+/**
+ * RocketMQ Bus Spring Application
+ *
+ * @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
+ * @since 0.2.1
+ */
+@EnableAutoConfiguration
+@RemoteApplicationEventScan(basePackages = "org.springframework.cloud.alibaba.cloud.examples.rocketmq")
+public class RocketMQBusApplication {
+
+    public static void main(String[] args) {
+        new SpringApplicationBuilder(RocketMQBusApplication.class)
+                .run(args);
+    }
+
+    /**
+     * Publish the {@link UserRemoteApplicationEvent} to all instances of currentService.
+     *
+     * @param publisher      {@link ApplicationEventPublisher}
+     * @param currentService Current application Name
+     * @return {@link ApplicationRunner} instance
+     */
+    @Bean
+    public ApplicationRunner publishEventRunner(ApplicationEventPublisher publisher,
+                                                @Value("${spring.application.name}") String currentService) {
+        return args -> {
+            User user = new User();
+            user.setName("Mercy Ma");
+            for (int i = 1; i < 10; i++) {
+                user.setId(Long.valueOf(i));
+                publisher.publishEvent(new UserRemoteApplicationEvent(user, currentService, currentService + ":**"));
+            }
+        };
+    }
+
+    /**
+     * Listener on the {@link UserRemoteApplicationEvent}
+     *
+     * @param event {@link UserRemoteApplicationEvent}
+     */
+    @EventListener
+    public void onEvent(UserRemoteApplicationEvent event) {
+        System.out.println("Listener on User : " + event.getUser());
+    }
+}

spring-cloud-alibaba-examples/spring-cloud-bus-rocketmq-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/rocketmq/User.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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
+ *
+ *     http://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 org.springframework.cloud.alibaba.cloud.examples.rocketmq;
+
+/**
+ * User Domain
+ *
+ * @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
+ * @since 0.2.1
+ */
+public class User {
+
+    private Long id;
+
+    private String name;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public String toString() {
+        return "User{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                '}';
+    }
+}

spring-cloud-alibaba-examples/spring-cloud-bus-rocketmq-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/rocketmq/UserRemoteApplicationEvent.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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
+ *
+ *     http://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 org.springframework.cloud.alibaba.cloud.examples.rocketmq;
+
+import org.springframework.cloud.bus.event.RemoteApplicationEvent;
+
+/**
+ * {@link User} {@link RemoteApplicationEvent}
+ *
+ * @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
+ * @since 0.2.1
+ */
+public class UserRemoteApplicationEvent extends RemoteApplicationEvent {
+
+    public UserRemoteApplicationEvent(User user, String originService,
+                                      String destinationService) {
+        super(user, originService, destinationService);
+    }
+
+    public User getUser() {
+        return (User) getSource();
+    }
+}

spring-cloud-alibaba-examples/spring-cloud-bus-rocketmq-example/src/main/resources/application.properties

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+spring.application.name=spring-cloud-bus-rocketmq-example
+
+management.endpoints.web.exposure.include=*
+
+spring.cloud.bus.trace.enabled=true