/*
* 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.synapse.core.axis2;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.SynapseConstants;
import org.apache.synapse.ServerManager;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
/**
* When Synapse is deployed on a WAR container, this is the init servlet that kicks off the
* Synapse instance, calling on the ServerManager
*/
public class SynapseStartUpServlet extends HttpServlet {
private static Log log = LogFactory.getLog(SynapseStartUpServlet.class);
private static final String ALREADY_INITED = "synapseAlreadyInited";
public void init() throws ServletException {
ServletConfig servletConfig = getServletConfig();
ServletContext servletContext = servletConfig.getServletContext();
if (Boolean.TRUE.equals(servletContext.getAttribute(ALREADY_INITED))) {
return;
}
ServerManager serverManager = ServerManager.getInstance();
String synHome = loadParameter(servletConfig, SynapseConstants.SYNAPSE_HOME, false);
if (synHome == null) {
log.info("synapse.home not set; using web application root as default value");
String webinfPath = servletContext.getRealPath("WEB-INF");
if (webinfPath == null || !webinfPath.endsWith("WEB-INF")) {
handleException("Unable to determine web application root directory");
} else {
synHome = webinfPath.substring(0, webinfPath.length()-7);
log.info("Setting synapse.home to : " + synHome);
}
}
serverManager.setSynapseHome(synHome);
serverManager.setSynapseXMLPath(loadParameter(servletConfig, SynapseConstants.SYNAPSE_XML, true));
String resolveRoot = loadParameter(servletConfig, SynapseConstants.RESOLVE_ROOT, false);
if (resolveRoot != null) {
serverManager.setResolveRoot(resolveRoot);
}
serverManager.setAxis2Repolocation(loadParameter(servletConfig, org.apache.axis2.Constants.AXIS2_REPO, true));
serverManager.setAxis2Xml(loadParameter(servletConfig, org.apache.axis2.Constants.AXIS2_CONF, true));
serverManager.setServerName(loadParameter(servletConfig, SynapseConstants.SERVER_NAME, false));
serverManager.start();
servletContext.setAttribute(ALREADY_INITED, Boolean.TRUE);
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
}
public void destroy() {
try {
ServerManager serverManager = ServerManager.getInstance();
serverManager.stop();
getServletContext().removeAttribute(ALREADY_INITED);
} catch (Exception e) {
log.error("Error stopping the Synapse listener manager", e);
}
}
private String loadParameter(ServletConfig servletConfig, String name, boolean required)
throws ServletException {
if (System.getProperty(name) == null) {
String value = servletConfig.getInitParameter(name);
log.debug("Init parameter '" + name + "' : " + value);
if ((value == null || value.trim().length() == 0) && required) {
handleException("A valid system property or init parameter '" + name + "' is required");
} else {
return value;
}
} else {
return System.getProperty(name);
}
return null;
}
private void handleException(String message) throws ServletException {
log.error(message);
log(message);
throw new ServletException(message);
}
}