samples/learning-more/binding-comet/weather-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/PrecipitationServiceImpl.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.tuscany.sca.sample.comet;

import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;

import org.apache.tuscany.sca.binding.comet.runtime.callback.CometCallback;
import org.apache.tuscany.sca.binding.comet.runtime.callback.Status;
import org.apache.tuscany.sca.sample.comet.model.Location;
import org.apache.tuscany.sca.sample.comet.model.Response;
import org.oasisopen.sca.annotation.Callback;
import org.oasisopen.sca.annotation.Service;

@Service(PrecipitationService.class)
public class PrecipitationServiceImpl implements PrecipitationService {

	@Callback
	protected CometCallback client;

	@Override
	public void getPrecipitation(final Location location) {
		new Timer().scheduleAtFixedRate(new TimerTask() {

			@Override
			public void run() {
				Response response = new Response();
				response.setDate(new Date());
				response.setData(Helper.randomInt(100) + "%");
				Status status = client.sendMessage(response);
				if (status == Status.CLIENT_DISCONNECTED) {
					System.out.println("Client disconnected from PrecipitationService.");
					this.cancel();
				}
			}
		}, 0L, 1000L);
	}
}