/
Activator.java
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/
Activator.java
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/*
* 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.karaf.http.core.internal.osgi;
import org.apache.karaf.http.core.ProxyService;
import org.apache.karaf.http.core.ServletService;
import org.apache.karaf.http.core.internal.HttpMBeanImpl;
import org.apache.karaf.http.core.internal.ProxyServiceImpl;
import org.apache.karaf.http.core.internal.ServletEventHandler;
import org.apache.karaf.http.core.internal.ServletServiceImpl;
import org.apache.karaf.util.tracker.BaseActivator;
import org.apache.karaf.util.tracker.annotation.Managed;
import org.apache.karaf.util.tracker.annotation.ProvideService;
import org.apache.karaf.util.tracker.annotation.RequireService;
import org.apache.karaf.util.tracker.annotation.Services;
import org.ops4j.pax.web.service.spi.ServletListener;
import org.osgi.framework.BundleEvent;
import org.osgi.framework.BundleListener;
import org.osgi.service.cm.ConfigurationAdmin;
import org.osgi.service.cm.ManagedService;
import org.osgi.service.http.HttpService;
import java.util.Dictionary;
@Services(
requires = {
@RequireService(HttpService.class),
@RequireService(ConfigurationAdmin.class)
},
provides = {
@ProvideService(ServletService.class),
@ProvideService(ProxyService.class)
}
)
@Managed("org.apache.karaf.http")
public class Activator extends BaseActivator implements ManagedService {
private BundleListener listener;
private ProxyService proxyService;
@Override
protected void doStart() throws Exception {
HttpService httpService = getTrackedService(HttpService.class);
if (httpService == null) {
return;
}
ConfigurationAdmin configurationAdmin = getTrackedService(ConfigurationAdmin.class);
if (configurationAdmin == null) {
return;
}
if (!ensureStartupConfiguration("org.apache.karaf.http")) {
return;
}
final ServletEventHandler servletEventHandler = new ServletEventHandler();
register(ServletListener.class, servletEventHandler);
ServletServiceImpl servletService = new ServletServiceImpl(servletEventHandler);
register(ServletService.class, servletService);
listener = event -> {
if (event.getType() == BundleEvent.UNINSTALLED
|| event.getType() == BundleEvent.UNRESOLVED
|| event.getType() == BundleEvent.STOPPED) {
servletEventHandler.removeEventsForBundle(event.getBundle());
}
};
bundleContext.addBundleListener(listener);
proxyService = new ProxyServiceImpl(httpService, configurationAdmin);
register(ProxyService.class, proxyService);
HttpMBeanImpl httpMBean = new HttpMBeanImpl(servletService, proxyService);
registerMBean(httpMBean, "type=http");
}
@Override
protected void doStop() {
if (listener != null) {
bundleContext.removeBundleListener(listener);
listener = null;
}
super.doStop();
}
@Override
public void updated(Dictionary<String, ?> properties) {
if (proxyService != null) {
proxyService.initProxies();
}
}
}