/*
* 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.mosgi.managedelements.obrprobe;
/**
* TODO : Should listen to Agent Service lifecycle
* Need to change ObjectName
* Should listen to serviceLifecycle
**/
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.Vector;
import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;
import javax.management.ObjectName;
import javax.management.NotificationBroadcasterSupport;
import javax.management.AttributeChangeNotification;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleEvent;
import org.osgi.framework.BundleException;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceEvent;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.ServiceRegistration;
//import org.apache.felix.bundlerepository.BundleRepository;
import org.osgi.service.obr.RepositoryAdmin;
import org.osgi.service.obr.Resolver;
import org.osgi.service.obr.Resource;
import org.osgi.framework.Version;
import org.osgi.service.log.LogService;
public class ObrProbe implements BundleActivator, ObrProbeMBean {
private String version = null;
private static final String TAB_NAME_STRING = "TabUI:name=ObrProbe";
private MBeanServer server = null;
private BundleContext bc = null;
private ServiceRegistration sr = null;
////////////////////////////////////////////////////////
// TabIfc (from ObrProbeMBean) //
////////////////////////////////////////////////////////
public String getBundleName() {
return this.bc.getProperty("mosgi.jmxconsole.tab.url.obrprobetab");
}
////////////////////////////////////////////////////////
// BundleActivator //
////////////////////////////////////////////////////////
public void start(BundleContext context) throws Exception {
this.bc=context;
this.version=(String)bc.getBundle().getHeaders().get(Constants.BUNDLE_VERSION);
this.log(LogService.LOG_INFO, "Starting obrProbe MBean " + this.version,null);
java.util.Properties p = new java.util.Properties();
p.put(org.apache.felix.mosgi.jmx.agent.Constants.OBJECTNAME, TAB_NAME_STRING);
this.sr = this.bc.registerService(ObrProbeMBean.class.getName(), this, p);
this.log(LogService.LOG_INFO, "ObrProbe MBean "+this.version+" started", null);
}
public void stop(BundleContext context) {
this.log(LogService.LOG_INFO, "Stopping obrprobe MBean "+this.version, null);
this.sr.unregister();
this.sr=null;
this.log(LogService.LOG_INFO, "obrProbe MBean "+this.version+" stopped", null);
this.bc=null;
}
////////////////////////////////////////////////////////
// ObrProbeMBean //
////////////////////////////////////////////////////////
public void deploy(String location,String version){
ServiceReference sref=this.bc.getServiceReference(RepositoryAdmin.class.getName());
System.out.println("Starting "+location+" "+version);
if (sref!=null){
RepositoryAdmin brs=(RepositoryAdmin)this.bc.getService(sref);
Resolver resolver=brs.resolver();
Resource ressource = selectNewestVersion(searchRepository(brs, location, version));
if (ressource!=null){
resolver.add(ressource);
}
if ((resolver.getAddedResources() != null) &&
(resolver.getAddedResources().length > 0)) {
if (resolver.resolve()) {
try{
resolver.deploy(true); //Bundles are started
}catch (IllegalStateException ex) {
System.out.println(ex);
}
}
}
}else{
this.log(LogService.LOG_ERROR, "No BundleRepository Service", null);
}
}
private void log(int prio, String message, Throwable t){
if (this.bc!=null){
ServiceReference logSR=this.bc.getServiceReference(LogService.class.getName());
if (logSR!=null){
((LogService)this.bc.getService(logSR)).log(prio, message, t);
}else{
System.out.println("No Log Service");
}
}else{
System.out.println(this.getClass().getName()+".log: No bundleContext");
}
}
private Resource[] searchRepository(RepositoryAdmin brs, String targetId, String targetVersion)
{
// Try to see if the targetId is a bundle ID.
try
{
Bundle bundle = bc.getBundle(Long.parseLong(targetId));
targetId = bundle.getSymbolicName();
}
catch (NumberFormatException ex)
{
// It was not a number, so ignore.
}
// The targetId may be a bundle name or a bundle symbolic name,
// so create the appropriate LDAP query.
StringBuffer sb = new StringBuffer("(|(presentationname=");
sb.append(targetId);
sb.append(")(symbolicname=");
sb.append(targetId);
sb.append("))");
if (targetVersion != null)
{
sb.insert(0, "(&");
sb.append("(version=");
sb.append(targetVersion);
sb.append("))");
}
return brs.discoverResources(sb.toString());
}
private Resource selectNewestVersion(Resource[] resources)
{
int idx = -1;
Version v = null;
for (int i = 0; (resources != null) && (i < resources.length); i++)
{
if (i == 0)
{
idx = 0;
v = resources[i].getVersion();
}
else
{
Version vtmp = resources[i].getVersion();
if (vtmp.compareTo(v) > 0)
{
idx = i;
v = vtmp;
}
}
}
return (idx < 0) ? null : resources[idx];
}
}