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/*******************************************************************************
* Copyright (c) 2012, 2017 IBM Corporation and others.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which accompanies this distribution,
* and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
******************************************************************************/
package org.eclipse.osgi.compatibility.state;
import java.util.Dictionary;
import java.util.Hashtable;
import java.util.List;
import java.util.Map;
import org.eclipse.osgi.container.Module;
import org.eclipse.osgi.container.ModuleContainer;
import org.eclipse.osgi.container.ModuleDatabase;
import org.eclipse.osgi.container.ModuleRevision;
import org.eclipse.osgi.internal.framework.BundleContextImpl;
import org.eclipse.osgi.internal.framework.EquinoxContainer;
import org.eclipse.osgi.internal.module.ResolverImpl;
import org.eclipse.osgi.internal.resolver.StateHelperImpl;
import org.eclipse.osgi.internal.resolver.StateObjectFactoryImpl;
import org.eclipse.osgi.service.resolver.BundleDescription;
import org.eclipse.osgi.service.resolver.DisabledInfo;
import org.eclipse.osgi.service.resolver.PlatformAdmin;
import org.eclipse.osgi.service.resolver.Resolver;
import org.eclipse.osgi.service.resolver.State;
import org.eclipse.osgi.service.resolver.StateHelper;
import org.eclipse.osgi.service.resolver.StateObjectFactory;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleException;
import org.osgi.framework.ServiceRegistration;
public class PlatformAdminImpl implements PlatformAdmin {
private final StateObjectFactory factory = new StateObjectFactoryImpl();
private final Object monitor = new Object();
private EquinoxContainer equinoxContainer;
private BundleContext bc;
private State systemState;
private PlatformBundleListener synchronizer;
private ServiceRegistration<PlatformAdmin> reg;
void start(BundleContext context) {
synchronized (this.monitor) {
equinoxContainer = ((BundleContextImpl) context).getContainer();
this.bc = context;
}
this.reg = context.registerService(PlatformAdmin.class, this, null);
}
void stop(BundleContext context) {
synchronized (this.monitor) {
if (synchronizer != null) {
context.removeBundleListener(synchronizer);
context.removeFrameworkListener(synchronizer);
}
synchronizer = null;
systemState = null;
}
this.reg.unregister();
}
@Override
public State getState() {
return getState(true);
}
@Override
public State getState(boolean mutable) {
if (mutable) {
return factory.createState(getSystemState());
}
return new ReadOnlyState(this);
}
State getSystemState() {
synchronized (this.monitor) {
if (systemState == null) {
systemState = createSystemState();
}
return systemState;
}
}
long getTimeStamp() {
synchronized (this.monitor) {
return equinoxContainer.getStorage().getModuleDatabase().getRevisionsTimestamp();
}
}
private State createSystemState() {
State state = factory.createState(true);
StateConverter converter = new StateConverter(state);
ModuleDatabase database = equinoxContainer.getStorage().getModuleDatabase();
database.readLock();
try {
ModuleContainer container = equinoxContainer.getStorage().getModuleContainer();
List<Module> modules = equinoxContainer.getStorage().getModuleContainer().getModules();
for (Module module : modules) {
ModuleRevision current = module.getCurrentRevision();
BundleDescription description = converter.createDescription(current);
state.addBundle(description);
}
state.setPlatformProperties(asDictionary(equinoxContainer.getConfiguration().getInitialConfig()));
synchronizer = new PlatformBundleListener(state, converter, database, container);
state.setResolverHookFactory(synchronizer);
bc.addBundleListener(synchronizer);
bc.addFrameworkListener(synchronizer);
state.resolve();
state.setTimeStamp(database.getRevisionsTimestamp());
} finally {
database.readUnlock();
}
return state;
}
private Dictionary<String, Object> asDictionary(Map<String, ?> map) {
return new Hashtable<>(map);
}
@Override
public StateHelper getStateHelper() {
return StateHelperImpl.getInstance();
}
/**
* @throws BundleException
*/
@Override
public void commit(State state) throws BundleException {
throw new UnsupportedOperationException();
}
@Deprecated
@Override
public Resolver getResolver() {
return createResolver();
}
@Override
public Resolver createResolver() {
return new ResolverImpl(false);
}
@Override
public StateObjectFactory getFactory() {
return factory;
}
@Override
public void addDisabledInfo(DisabledInfo disabledInfo) {
throw new UnsupportedOperationException();
}
@Override
public void removeDisabledInfo(DisabledInfo disabledInfo) {
throw new UnsupportedOperationException();
}
}
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