the alert module support service.

dolphinscheduler-alert/pom.xml

@@ -39,6 +39,10 @@
             <groupId>org.apache.dolphinscheduler</groupId>
             <artifactId>dolphinscheduler-remote</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.apache.dolphinscheduler</groupId>
+            <artifactId>dolphinscheduler-common</artifactId>
+        </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>

dolphinscheduler-alert/src/main/java/org/apache/dolphinscheduler/alert/AlertServer.java

@@ -17,6 +17,8 @@
 
 package org.apache.dolphinscheduler.alert;
 
+import static org.apache.dolphinscheduler.common.Constants.ALERT_RPC_PORT;
+
 import org.apache.dolphinscheduler.alert.plugin.AlertPluginManager;
 import org.apache.dolphinscheduler.alert.plugin.DolphinPluginLoader;
 import org.apache.dolphinscheduler.alert.plugin.DolphinPluginManagerConfig;
@@ -110,7 +112,7 @@ public class AlertServer {
      */
     private void initRemoteServer() {
         NettyServerConfig serverConfig = new NettyServerConfig();
-        serverConfig.setListenPort(50501);
+        serverConfig.setListenPort(ALERT_RPC_PORT);
         this.server = new NettyRemotingServer(serverConfig);
         this.server.registerProcessor(CommandType.ALERT_SEND_REQUEST, new AlertRequestProcessor(alertDao, alertPluginManager, pluginDao));
         this.server.start();

dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/Constants.java

@@ -387,13 +387,17 @@ public final class Constants {
      */
     public static final int SEC_2_MINUTES_TIME_UNIT = 60;
 
-
     /***
      *
      * rpc port
      */
     public static final int RPC_PORT = 50051;
 
+    /***
+     * alert rpc port
+     */
+    public static final int ALERT_RPC_PORT = 50052;
+
     /**
      * forbid running task
      */