/*
* 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.chemistry.opencmis.server.impl;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import org.apache.chemistry.opencmis.commons.server.CmisServiceFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* CMIS context listener.
*/
public class CmisRepositoryContextListener implements ServletContextListener {
public static final String SERVICES_FACTORY = "org.apache.chemistry.opencmis.servicesfactory";
private static final Log log = LogFactory.getLog(CmisRepositoryContextListener.class.getName());
private static final String CONFIG_INIT_PARAM = "org.apache.chemistry.opencmis.REPOSITORY_CONFIG_FILE";
private static final String CONFIG_FILENAME = "/repository.properties";
private static final String PROPERTY_CLASS = "class";
public void contextInitialized(ServletContextEvent sce) {
// get config file name or use default
String configFilename = sce.getServletContext().getInitParameter(CONFIG_INIT_PARAM);
if (configFilename == null) {
configFilename = CONFIG_FILENAME;
}
// create services factory
CmisServiceFactory factory = createServiceFactory(configFilename);
// set the services factory into the servlet context
sce.getServletContext().setAttribute(SERVICES_FACTORY, factory);
}
public void contextDestroyed(ServletContextEvent sce) {
// destroy services factory
CmisServiceFactory factory = (CmisServiceFactory) sce.getServletContext().getAttribute(SERVICES_FACTORY);
if (factory != null) {
factory.destroy();
}
}
/**
* Creates a service factory.
*/
private CmisServiceFactory createServiceFactory(String filename) {
// load properties
InputStream stream = this.getClass().getResourceAsStream(filename);
if (stream == null) {
log.warn("Cannot find configuration!");
return null;
}
Properties props = new Properties();
try {
props.load(stream);
} catch (IOException e) {
log.warn("Cannot load configuration: " + e, e);
return null;
} finally {
try {
stream.close();
} catch (IOException ioe) {
}
}
// get 'class' property
String className = props.getProperty(PROPERTY_CLASS);
if (className == null) {
log.warn("Configuration doesn't contain the property 'class'!");
return null;
}
// create a factory instance
Object object = null;
try {
object = Class.forName(className).newInstance();
} catch (Exception e) {
log.warn("Could not create a services factory instance: " + e, e);
return null;
}
if (!(object instanceof CmisServiceFactory)) {
log.warn("The provided class is not an instance of CmisServiceFactory!");
}
CmisServiceFactory factory = (CmisServiceFactory) object;
// initialize factory instance
Map<String, String> parameters = new HashMap<String, String>();
for (Enumeration<?> e = props.propertyNames(); e.hasMoreElements();) {
String key = (String) e.nextElement();
String value = props.getProperty(key);
parameters.put(key, value);
}
factory.init(parameters);
log.info("Initialized Services Factory: " + parameters);
return factory;
}
}