/*
* 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.felix.httplite.osgi;
import java.util.Dictionary;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import org.apache.felix.httplite.server.Server;
import org.apache.felix.httplite.servlet.HttpConstants;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceRegistration;
import org.osgi.service.http.HttpService;
/**
* Activator for org.apache.felix.http.lightweight HTTP Service implementation.
*
* The activator will read in system properties that are relevant to the service
* and register the HttpService in the service registry.
*
**/
public class Activator implements BundleActivator
{
/**
* Felix-specific log level setting as system property.
*/
private static final String FELIX_LOG_LEVEL = "felix.log.level";
/**
* HTTP Service registration.
*/
private ServiceRegistration m_httpServiceReg;
/**
* Reference to socket server.
*/
private Server m_server;
/* (non-Javadoc)
* @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
*/
public void start(BundleContext context) throws Exception
{
Logger logger = createLogger(context);
//Set the internal logger's log level if specified.
if (context.getProperty(FELIX_LOG_LEVEL) != null)
{
logger.setLogLevel(Integer.parseInt(context.getProperty(FELIX_LOG_LEVEL)));
}
//Only enable the HTTPService if the HTTP_ENABLE property is set or undefined.
if (isPropertyTrue(context, Server.CONFIG_PROPERTY_HTTP_ENABLE, true))
{
Map config = createConfigMap(context);
m_server = new Server(config, logger);
m_httpServiceReg = context.registerService(HttpService.class.getName(),
new HttpServiceFactoryImpl(logger, m_server),
createHttpServiceProperties(Server.getConfiguredPort(config)));
}
//Warn user that HTTPS is not supported if it is specifically enabled.
if (isPropertyTrue(context, Server.CONFIG_PROPERTY_HTTPS_ENABLE, false))
{
logger.log(Logger.LOG_WARNING, Server.CONFIG_PROPERTY_HTTPS_ENABLE
+ " is not implemented in this http service.");
}
}
/**
* Create a Dictionary intended to be used with Http Service registration.
*
* @param port Port number to add to the properties.
* @return A dictionary of OSGi service properties associate with the HTTP service.
*/
private Dictionary createHttpServiceProperties(final int port)
{
Dictionary props = new Properties();
props.put(HttpConstants.SERVICE_PROPERTY_KEY_HTTP_ENABLE, "true");
props.put(HttpConstants.SERVICE_PROPERTY_KEY_HTTPS_ENABLE, "false");
props.put(HttpConstants.SERVICE_PROPERTY_KEY_HTTP_PORT, Integer.toString(port));
return props;
}
/**
* Create a Map of configuration name/value pairs that the socket server requires to start.
*
* @param context BundleContext
* @return Map of configuration name/value pairs that the socket server requires to start.
*/
private Map createConfigMap(final BundleContext context)
{
Map config = new HashMap();
config.put(Server.CONFIG_PROPERTY_HTTP_PORT,
context.getProperty(Server.CONFIG_PROPERTY_HTTP_PORT));
config.put(Server.CONFIG_PROPERTY_HTTP_HOST,
context.getProperty(Server.CONFIG_PROPERTY_HTTP_HOST));
config.put(Server.CONFIG_PROPERTY_HTTP_ENABLE,
context.getProperty(Server.CONFIG_PROPERTY_HTTP_ENABLE));
config.put(Server.CONFIG_PROPERTY_HTTPS_ENABLE,
context.getProperty(Server.CONFIG_PROPERTY_HTTPS_ENABLE));
config.put(Server.CONFIG_PROPERTY_HTTP_DEBUG,
context.getProperty(Server.CONFIG_PROPERTY_HTTP_DEBUG));
config.put(Server.CONFIG_PROPERTY_THREADPOOL_LIMIT_PROP,
context.getProperty(Server.CONFIG_PROPERTY_THREADPOOL_LIMIT_PROP));
config.put(Server.CONFIG_PROPERTY_THREADPOOL_TIMEOUT_PROP,
context.getProperty(Server.CONFIG_PROPERTY_THREADPOOL_TIMEOUT_PROP));
config.put(Server.CONFIG_PROPERTY_CONNECTION_REQUESTLIMIT_PROP,
context.getProperty(Server.CONFIG_PROPERTY_CONNECTION_REQUESTLIMIT_PROP));
config.put(Server.CONFIG_PROPERTY_CONNECTION_TIMEOUT_PROP,
context.getProperty(Server.CONFIG_PROPERTY_CONNECTION_TIMEOUT_PROP));
return config;
}
/**
* @param context BundleContext
* @return Logger instance
*/
private Logger createLogger(final BundleContext context)
{
Logger logger = new Logger();
logger.setSystemBundleContext(context);
return logger;
}
/* (non-Javadoc)
* @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
*/
public void stop(final BundleContext context) throws Exception
{
m_server.setStopping();
if (m_httpServiceReg != null)
{
m_httpServiceReg.unregister();
}
if (m_server.getState() == Server.ACTIVE_STATE)
{
m_server.stop();
}
}
/**
* Convenience method that returns true if Bundle property exists and is true, false if false, and defaultValue otherwise.
* @param context BundleContext
* @param name Property name
* @param defaultValue default value for case that the key does not exist.
* @return true if Bundle property exists and is true, false if false, and defaultValue otherwise.
*/
private static boolean isPropertyTrue(final BundleContext context, final String name,
final boolean defaultValue)
{
String value = context.getProperty(name);
if (value == null)
{
return defaultValue;
}
return Boolean.valueOf(value).booleanValue();
}
}