/*
* JBoss, Home of Professional Open Source.
* Copyright 2010, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.osgi.parser;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.osgi.service.FrameworkBootstrapService;
import org.jboss.modules.ModuleIdentifier;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceBuilder;
import org.jboss.msc.service.ServiceController;
import org.jboss.msc.service.ServiceController.Mode;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceTarget;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Observable;
/**
* The OSGi subsystem state.
*
* @author Thomas.Diesler@jboss.com
* @author David Bosschaert
* @since 13-Oct-2010
*/
public class SubsystemState extends Observable implements Serializable, Service<SubsystemState> {
public static final ServiceName SERVICE_NAME = FrameworkBootstrapService.FRAMEWORK_BASE_NAME.append("subsystemstate");
public static final String PROP_JBOSS_OSGI_SYSTEM_MODULES = "org.jboss.osgi.system.modules";
public static final String PROP_JBOSS_OSGI_SYSTEM_PACKAGES = "org.jboss.osgi.system.packages";
public static final String PROP_JBOSS_OSGI_SYSTEM_MODULES_EXTRA = "org.jboss.osgi.system.modules.extra";
private final Map<String, Object> properties = new LinkedHashMap<String, Object>();
private final List<OSGiCapability> capabilities = new ArrayList<OSGiCapability>();
private volatile Activation activationPolicy = Activation.LAZY;
static final Activation DEFAULT_ACTIVATION = Activation.LAZY;
public static ServiceController<SubsystemState> addService(ServiceTarget serviceTarget, Activation activation) {
SubsystemState state = new SubsystemState();
state.setActivation(activation);
ServiceBuilder<SubsystemState> builder = serviceTarget.addService(SERVICE_NAME, state);
builder.setInitialMode(Mode.LAZY);
return builder.install();
}
static SubsystemState getSubsystemState(OperationContext context) {
ServiceController<?> controller = context.getServiceRegistry(true).getService(SubsystemState.SERVICE_NAME);
return controller != null ? (SubsystemState) controller.getValue() : null;
}
SubsystemState() {}
@Override
public SubsystemState getValue() throws IllegalStateException, IllegalArgumentException {
return this;
}
@Override
public void start(StartContext context) throws StartException {
// Nothing to do
}
@Override
public void stop(StopContext context) {
// Nothing to do
}
public enum Activation {
EAGER, LAZY
}
public Map<String, Object> getProperties() {
return Collections.unmodifiableMap(properties);
}
Object setProperty(String name, Object value) {
try {
if (value == null)
return properties.remove(name);
else
return properties.put(name, value);
} finally {
notifyObservers(new ChangeEvent(ChangeType.PROPERTY, value == null, name));
}
}
public List<OSGiCapability> getCapabilities() {
return Collections.unmodifiableList(capabilities);
}
public void addCapability(OSGiCapability module) {
capabilities.add(module);
notifyObservers(new ChangeEvent(ChangeType.CAPABILITY, false, module.getIdentifier().toString()));
}
public OSGiCapability removeCapability(String id) {
ModuleIdentifier identifier = ModuleIdentifier.fromString(id);
synchronized (capabilities) {
for (Iterator<OSGiCapability> it = capabilities.iterator(); it.hasNext(); ) {
OSGiCapability module = it.next();
if (module.getIdentifier().equals(identifier)) {
it.remove();
notifyObservers(new ChangeEvent(ChangeType.CAPABILITY, true, identifier.toString()));
return module;
}
}
return null;
}
}
public Activation getActivationPolicy() {
return activationPolicy;
}
void setActivation(Activation activation) {
if (activationPolicy == activation)
return;
try {
activationPolicy = activation;
} finally {
notifyObservers(new ChangeEvent(ChangeType.ACTIVATION, false, activation.name()));
}
}
@Override
public void notifyObservers(Object arg) {
setChanged();
super.notifyObservers(arg);
}
public static class OSGiCapability implements Serializable {
private static final long serialVersionUID = -2280880859263752474L;
private final String identifier;
private final Integer startlevel;
public OSGiCapability(String identifier, Integer startlevel) {
if (identifier == null)
throw new IllegalArgumentException("Null identifier");
this.identifier = identifier;
this.startlevel = (startlevel != null ? startlevel : 1);
}
public String getIdentifier() {
return identifier;
}
public Integer getStartLevel() {
return startlevel;
}
@Override
public int hashCode() {
return identifier.hashCode();
}
@Override
public boolean equals(Object obj) {
if (obj instanceof OSGiCapability == false)
return false;
OSGiCapability om = (OSGiCapability) obj;
return identifier == null ? om.identifier == null : identifier.equals(om.identifier);
}
}
public static class ChangeEvent {
private final String id;
private final boolean isRemoved;
private final ChangeType type;
public ChangeEvent(ChangeType type, boolean isRemoved, String id) {
this.type = type;
this.isRemoved = isRemoved;
this.id = id;
}
public ChangeType getType() {
return type;
}
public boolean isRemoved() {
return isRemoved;
}
public String getId() {
return id;
}
}
public enum ChangeType { ACTIVATION, PROPERTY, CAPABILITY };
}