Skip to content
lubinwang edited this page Feb 25, 2014 · 1 revision

####1.Define an obj interface

public interface IHelloWordObj {
	String hello(String msg);
	String test(Integer i, String s, Long l);
	void notifySomeThing(Integer i, String s, Long l);
}

####2.Implements the previous defined interface

public class HelloWorldObj implements IHelloWordObj {
	@Override
	public String hello(String msg) {
		return msg;
	}
	@Override
	public String test(Integer i, String s, Long l) {
		return i+s+l;
	}
	public String notifySomeThing(Integer i, String s, Long l) {
	}
}

####3. Edit application.conf to add the previous obj and Start the server com.lubin.rpc.server.RPCServer

server {
	port = 9090
	backlog = 1000
	async = false	//handling request in business logic thread pool
	asyncThreadPoolSize = 4
    ioThreadNum = 1   
	objects = [
		com.lubin.rpc.example.obj.HelloWorldObj
	]
}
client {
	reconnInterval = 1000	//time interval(million second) for reconnecting to server
	asyncThreadPoolSize = 1   //thread pool for excuting Async callback
    ioThreadNum = 1   
    objects = [ 
		{ 
			name = com.lubin.rpc.example.obj.IHelloWordObj
			servers ="127.0.0.1:9090 127.0.0.1:9091"
		}
	]
}

####4.Make an Obj proxy and call the remote Obj.

    IHelloWordObj client = RPCClient.createObjectProxy("127.0.0.1", 9090, IHelloWordObj.class);
    
    String result = client.hello("hello world!");
    if(!result.equals("hello world!"))
           System.out.println("error="+result);

####5. Asynchronous call #####5.1. Create an asynchronous Obj proxy and call the remote Obj.

    IAsyncObjectProxy asyncClient = RPCClient.createAsyncObjPrx("127.0.0.1", 9090, IHelloWordObj.class);
    
    RPCFuture helloFuture = client.call("hello", new Object[]{"hello world!"});
    RPCFuture testFuture = client.call("test", new Object[]{1,"hello world!",2L});
    Object res1= helloFuture.get(3000, TimeUnit.MILLISECONDS);
    Object res2= testFuture.get(3000, TimeUnit.MILLISECONDS);

#####5.2. Optionally you can provide a callback which will be called by NettyRPC after received response from server.

public class AsyncHelloWorldCallback implements AsyncRPCCallback {
	@Override
	public void fail(Exception e) {
		System.out.println(e.getMessage());
	}
	@Override
	public void success(Object result) {
		System.out.println(result);
	}
}

    IAsyncObjectProxy asyncClient = RPCClient.createAsyncObjPrx("127.0.0.1", 9090, IHelloWordObj.class);
    RPCFuture helloFuture = client.call("hello", new Object[]{"hello world!"},new AsyncHelloWorldCallback());
    RPCFuture testFuture = client.call("test", new Object[]{1,"hello world!",2L}, new AsyncHelloWorldCallback());

####6 High availability, you can deploy more than one servers to achieve HA, NettyRPC handle load balance and failover automatically.

    ArrayList<InetSocketAddress> serverList = new ArrayList<InetSocketAddress>();
    serverList.add(new InetSocketAddress("127.0.0.1",9090));
    serverList.add(new InetSocketAddress("127.0.0.1",9091));
         
    IHelloWordObj client = RPCClient.createObjectProxy(serverList, IHelloWordObj.class);
    System.out.println("test server list:"+client.hello("test server list11"));

For more information please refer to example in the src/test folder.

Clone this wiki locally