/*
* 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.aries.subsystem.core.internal;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.aries.subsystem.AriesSubsystem;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Filter;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.service.subsystem.Subsystem;
import org.osgi.service.subsystem.SubsystemConstants;
import org.osgi.util.tracker.BundleTracker;
import org.osgi.util.tracker.ServiceTracker;
public class SystemRepositoryManager {
private static final Filter filter = createFilter();
private static Filter createFilter() {
try {
return FrameworkUtil.createFilter(new StringBuilder()
.append("(&(!(|(")
.append(SubsystemConstants.SUBSYSTEM_STATE_PROPERTY)
.append('=')
.append(Subsystem.State.INSTALL_FAILED)
.append(")(")
.append(SubsystemConstants.SUBSYSTEM_STATE_PROPERTY)
.append('=')
.append(Subsystem.State.UNINSTALLING)
.append(")(")
.append(SubsystemConstants.SUBSYSTEM_STATE_PROPERTY)
.append('=')
.append(Subsystem.State.UNINSTALLED)
.append(")))(")
.append(org.osgi.framework.Constants.OBJECTCLASS)
.append('=')
.append(AriesSubsystem.class.getName())
.append("))")
.toString());
}
catch (InvalidSyntaxException e) {
throw new IllegalStateException(e);
}
}
private final BundleTracker<AtomicReference<BundleRevisionResource>> bundleTracker;
private final ServiceTracker<AriesSubsystem, BasicSubsystem> serviceTracker;
private final SystemRepository systemRepository;
public SystemRepositoryManager(BundleContext bundleContext) {
systemRepository = new SystemRepository(bundleContext);
bundleTracker = new BundleTracker<AtomicReference<BundleRevisionResource>>(
bundleContext, ~Bundle.UNINSTALLED, systemRepository);
serviceTracker = new ServiceTracker<AriesSubsystem, BasicSubsystem>(
bundleContext, filter, systemRepository);
}
public SystemRepository getSystemRepository() {
return systemRepository;
}
public void open() {
bundleTracker.open();
serviceTracker.open();
}
public void close() {
serviceTracker.close();
bundleTracker.close();
}
}