WebServiceDaemon.java

package guang.crawler.controller.webservice;

import guang.crawler.centerConfig.CenterConfig;
import guang.crawler.controller.ControllerConfig;
import guang.crawler.util.NetworkHelper;

import java.io.IOException;

import javax.xml.ws.Endpoint;

import org.apache.zookeeper.KeeperException;

/**
 * 对控制器发布的web service进行管理的类
 * 
 * @author sun
 *
 */
public class WebServiceDaemon {
	private static final String	    MANAGER_SERVICE	= "managerService";
	private static WebServiceDaemon	webServiceDaemon;

	public static WebServiceDaemon me() {
		if (WebServiceDaemon.webServiceDaemon == null) {
			WebServiceDaemon.webServiceDaemon = new WebServiceDaemon();
		}
		return WebServiceDaemon.webServiceDaemon;
	}

	private ControllerConfig	controllerConfig;
	private Endpoint	     managerService;

	private WebServiceDaemon() {
		this.controllerConfig = ControllerConfig.me();
	}

	/**
	 * 启动web服务
	 * 
	 * @throws IOException
	 * @throws InterruptedException
	 * @throws KeeperException
	 */
	public void start() throws IOException, InterruptedException,
	        KeeperException {
		// 先获取需要的端口号
		int port = this.controllerConfig.getWebserviceSuggestPort();
		// 启动服务端
		String address = "http://" + NetworkHelper.getIPAddress() + ":" + port
		        + "/crawler/controller/managerService";
		this.managerService = Endpoint.publish(address,
		                                       new SiteManagerServiceImp());
		// 注册该服务
		CenterConfig.me()
		            .getControllerInfo()
		            .getControllerServicesInfo()
		            .registService(WebServiceDaemon.MANAGER_SERVICE, address);
	}

	/**
	 * 停止web服务
	 */
	public void stop() {
		try {
			CenterConfig.me()
			            .getControllerInfo()
			            .getControllerServicesInfo()
			            .unRegistService(WebServiceDaemon.MANAGER_SERVICE);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		if (this.managerService != null) {
			this.managerService.stop();
		}
	}
}