/**
 * Copyright 2014-2014 Ralph Schaer <ralphschaer@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 ch.rasc.wampspring.support;

import java.io.File;
import java.io.IOException;

import org.apache.catalina.Context;
import org.apache.catalina.connector.Connector;
import org.apache.catalina.deploy.ApplicationListener;
import org.apache.catalina.startup.Tomcat;
import org.apache.coyote.http11.Http11NioProtocol;
import org.apache.tomcat.websocket.server.WsContextListener;
import org.springframework.util.SocketUtils;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;

/**
 * Tomcat based {@link WebSocketTestServer}.
 *
 * @author Rossen Stoyanchev
 */
public class TomcatWebSocketTestServer implements WebSocketTestServer {

	private static final ApplicationListener WS_APPLICATION_LISTENER = new ApplicationListener(
			WsContextListener.class.getName(), false);

	private final Tomcat tomcatServer;

	private final int port;

	private Context context;

	public TomcatWebSocketTestServer() {

		this.port = SocketUtils.findAvailableTcpPort();

		Connector connector = new Connector(Http11NioProtocol.class.getName());
		connector.setPort(this.port);

		File baseDir = createTempDir("tomcat");
		String baseDirPath = baseDir.getAbsolutePath();

		this.tomcatServer = new Tomcat();
		this.tomcatServer.setBaseDir(baseDirPath);
		this.tomcatServer.setPort(this.port);
		this.tomcatServer.getService().addConnector(connector);
		this.tomcatServer.setConnector(connector);
	}

	private File createTempDir(String prefix) {
		try {
			File tempFolder = File.createTempFile(prefix + ".", "." + getPort());
			tempFolder.delete();
			tempFolder.mkdir();
			tempFolder.deleteOnExit();
			return tempFolder;
		}
		catch (IOException ex) {
			throw new RuntimeException("Unable to create temp directory", ex);
		}
	}

	@Override
	public int getPort() {
		return this.port;
	}

	@Override
	public void deployConfig(WebApplicationContext wac) {
		this.context = this.tomcatServer.addContext("",
				System.getProperty("java.io.tmpdir"));
		this.context.addApplicationListener(WS_APPLICATION_LISTENER);
		Tomcat.addServlet(context, "dispatcherServlet", new DispatcherServlet(wac));
		this.context.addServletMapping("/", "dispatcherServlet");
	}

	@Override
	public void undeployConfig() {
		if (this.context != null) {
			this.context.removeServletMapping("/");
			this.tomcatServer.getHost().removeChild(this.context);
		}
	}

	@Override
	public void start() throws Exception {
		this.tomcatServer.start();
	}

	@Override
	public void stop() throws Exception {
		this.tomcatServer.stop();
	}

}

@@ -792,63 +792,8 @@
 or;%0A
-import org.apache.catalina.deploy.ApplicationListener;%0A
 impo
@@ -1271,148 +1271,8 @@
  %7B%0A%0A
-%09private static final ApplicationListener WS_APPLICATION_LISTENER = new ApplicationListener(%0A%09%09%09WsContextListener.class.getName(), false);%0A%0A
 %09pri
@@ -2470,30 +2470,40 @@
 er(W
-S_APPLICATION_LISTENER
+sContextListener.class.getName()
 );%0A%09

Resolve call to a deprecated method