/*
 * Copyright [2012] [ShopWiki]
 *
 * 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.shopwiki.roger.example;

import java.util.Map;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

import org.codehaus.jackson.type.TypeReference;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.shopwiki.roger.MessagingUtil;
import com.shopwiki.roger.RabbitConnector;
import com.shopwiki.roger.example.ExampleRpcServer.Request;
import com.shopwiki.roger.example.ExampleRpcServer.Response;
import com.shopwiki.roger.rpc.RpcClient;
import com.shopwiki.roger.rpc.RpcResponse;

/**
 * Run this main after {@link ExampleRpcServer}.
 *
 * @author rstewart
 */
public class ExampleRpcClient {

    public static RpcResponse<Response> sendRequest(String name) throws Exception {
        Connection conn = null;
        try {
            conn = ExampleConstants.CONNECTOR.newDaemonConnection(1);
            Channel channel = conn.createChannel();
            Map<String,Object> queueArgs = null;
            TypeReference<Response> responseType = new TypeReference<Response>() { };
            RpcClient<Response> client = RpcClient.create(channel, ExampleRpcServer.ROUTE, queueArgs, responseType);

            Request request = new Request();
            request.name = name;

            Future<RpcResponse<Response>> future = client.sendRequest(request);
            return future.get(5, TimeUnit.SECONDS);
        } finally {
            // If we didn't close the connection, it leaves a non-daemon thread running,
            // even though we are explicitly using the DaemonThreadFactory!
            // But... this only happens if the RabbitMQ server version is 3.x (doesn't happen if server is 2.x)!
            // Upgrading the Java driver from 2.7.1 to 3.1.4 does NOT seem to matter.
            RabbitConnector.closeConnection(conn);
        }
    }

    public static void main(String[] args) throws Exception {
        RpcResponse<Response> response = sendRequest("Robert");
        System.out.println("HEADERS:\n" + response.getHeaders());
        System.out.println();
        System.out.println("BODY:\n" + MessagingUtil.prettyPrintMessage(response.getBody()));
    }
}