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/**
* Copyright 2012 Kjetil Ørbekk <kjetil.orbekk@gmail.com>
*
* Licensed 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 com.orbekk.example;
import java.util.concurrent.CountDownLatch;
import com.google.protobuf.RpcCallback;
import com.orbekk.example.Example.FortuneReply;
import com.orbekk.protobuf.RpcChannel;
import com.orbekk.protobuf.Rpc;
public class ExampleClient {
public void runClient(int port) {
RpcChannel channel = null;
try {
channel = RpcChannel.createOrNull("localhost", port);
Example.FortuneService service =
Example.FortuneService.newStub(channel);
printFortune(service);
} finally {
if (channel != null) {
channel.close();
}
}
}
public void printFortune(Example.FortuneService service) {
Rpc rpc = new Rpc(); // Represents a single rpc call.
Example.Empty request = Example.Empty.newBuilder().build();
// An RPC call is asynchronous. A CountDownLatch is a nice way to wait
// for the callback to finish.
final CountDownLatch doneSignal = new CountDownLatch(1);
service.getFortune(rpc, request, new RpcCallback<Example.FortuneReply>() {
@Override public void run(FortuneReply reply) {
System.out.println(reply.getFortune());
doneSignal.countDown();
}
});
try {
doneSignal.await();
} catch (InterruptedException e) {
System.out.println("Interrupted while waiting for fortune. :(");
}
}
public static void main(String[] args) {
if (args.length == 0) {
System.err.println("Usage: ExampleClient <port>");
System.exit(1);
}
new ExampleClient().runClient(Integer.valueOf(args[0]));
}
}
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