添加rpc调用样例 (#3)

添加rpc调用样例。

Reviewed-on: #3

pom.xml

@@ -7,7 +7,7 @@
   <version>1.0-SNAPSHOT</version>
   <packaging>jar</packaging>
 
-  <name>test</name>
+  <name>java_test</name>
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -23,6 +23,12 @@
       <version>6.20.3</version>
     </dependency>
 
+    <dependency>
+      <groupId>org.apache.hadoop</groupId>
+      <artifactId>hadoop-common</artifactId>
+      <version>3.3.6</version>
+    </dependency>
+
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>

src/main/java/com/zeekling/cn/rpc/HelloServer.java

@@ -0,0 +1,28 @@
+package com.zeekling.cn.rpc;
+
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.ipc.RPC;
+import org.apache.hadoop.ipc.Server;
+
+import java.io.IOException;
+
+public class HelloServer implements RPCProtocol {
+
+    @Override
+    public String hello(String msg) {
+        System.out.println("msg=" + msg);
+        return "hello:" + msg;
+    }
+
+    public static void main(String[] args) throws IOException {
+        Server server = new RPC.Builder(new Configuration())
+                .setBindAddress("127.0.0.1")
+                .setPort(8888)
+                .setProtocol(RPCProtocol.class)
+                .setInstance(new HelloServer())
+                .build();
+        System.out.println("服务器启动");
+        server.start();
+    }
+}

src/main/java/com/zeekling/cn/rpc/RPCClient.java

@@ -0,0 +1,23 @@
+package com.zeekling.cn.rpc;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.ipc.RPC;
+
+import java.io.IOException;
+import java.net.InetSocketAddress;
+
+public class RPCClient {
+
+    public static void main(String[] args) throws IOException {
+        RPCProtocol client = RPC.getProxy(
+                RPCProtocol.class,
+                RPCProtocol.versionID,
+                new InetSocketAddress("127.0.0.1", 8888),
+                new Configuration());
+        System.out.println("客户端");
+        String hello = client.hello("I'm Client");
+        System.out.println(hello);
+
+    }
+
+}

src/main/java/com/zeekling/cn/rpc/RPCProtocol.java

@@ -0,0 +1,9 @@
+package com.zeekling.cn.rpc;
+
+public interface RPCProtocol {
+
+    long versionID = 666;
+
+    String hello(String msg);
+
+}