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/*******************************************************************************
* Copyright (c) 2004 Composent, Inc. and others. All rights reserved. This
* program and the accompanying materials are made available under the terms of
* the Eclipse Public License v1.0 which accompanies this distribution, and is
* available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors: Composent, Inc. - initial API and implementation
******************************************************************************/
package org.eclipse.ecf.internal.core.identity;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionDelta;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.IRegistryChangeEvent;
import org.eclipse.core.runtime.IRegistryChangeListener;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Plugin;
import org.eclipse.core.runtime.Status;
import org.eclipse.ecf.core.identity.IDFactory;
import org.eclipse.ecf.core.identity.IIDFactory;
import org.eclipse.ecf.core.identity.Namespace;
import org.eclipse.ecf.core.util.Trace;
import org.eclipse.osgi.service.debug.DebugOptions;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceRegistration;
import org.osgi.util.tracker.ServiceTracker;
/**
* The activator class controls the plug-in life cycle
*/
public class Activator extends Plugin {
// The plug-in ID
public static final String PLUGIN_ID = "org.eclipse.ecf.identity"; //$NON-NLS-1$
protected static final String NAMESPACE_NAME = "namespace"; //$NON-NLS-1$
protected static final String NAMESPACE_EPOINT = PLUGIN_ID + "." //$NON-NLS-1$
+ NAMESPACE_NAME;
protected static final String NAME_ATTRIBUTE = "name"; //$NON-NLS-1$
protected static final String CLASS_ATTRIBUTE = "class"; //$NON-NLS-1$
protected static final int REMOVE_NAMESPACE_ERRORCODE = 100;
protected static final int FACTORY_NAME_COLLISION_ERRORCODE = 200;
protected static final String DESCRIPTION_ATTRIBUTE = "description"; //$NON-NLS-1$
// The shared instance
private static Activator plugin;
private IRegistryChangeListener registryManager = null;
private ServiceRegistration idFactoryServiceRegistration = null;
private ServiceTracker extensionRegistryTracker = null;
private ServiceTracker debugOptionsTracker = null;
/**
* The constructor
*/
public Activator() {
}
public IExtensionRegistry getExtensionRegistry() {
return (IExtensionRegistry) extensionRegistryTracker.getService();
}
public DebugOptions getDebugOptions() {
return (DebugOptions) debugOptionsTracker.getService();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.core.runtime.Plugins#start(org.osgi.framework.BundleContext)
*/
public void start(BundleContext context) throws Exception {
super.start(context);
plugin = this;
this.extensionRegistryTracker = new ServiceTracker(context,
IExtensionRegistry.class.getName(), null);
this.extensionRegistryTracker.open();
IExtensionRegistry reg = getExtensionRegistry();
if (reg != null) {
this.registryManager = new IdentityRegistryManager();
reg.addRegistryChangeListener(registryManager);
}
this.debugOptionsTracker = new ServiceTracker(context,
DebugOptions.class.getName(), null);
this.debugOptionsTracker.open();
this.setupNamespaceExtensionPoint();
Trace
.exiting(Activator.PLUGIN_ID,
IdentityDebugOptions.METHODS_ENTERING, Activator.class,
"start"); //$NON-NLS-1$
// Register IIDFactory service
idFactoryServiceRegistration = context.registerService(IIDFactory.class
.getName(), IDFactory.getDefault(), null);
}
protected class IdentityRegistryManager implements IRegistryChangeListener {
public void registryChanged(IRegistryChangeEvent event) {
IExtensionDelta delta[] = event.getExtensionDeltas(PLUGIN_ID,
NAMESPACE_NAME);
for (int i = 0; i < delta.length; i++) {
switch (delta[i].getKind()) {
case IExtensionDelta.ADDED:
addNamespaceExtensions(delta[i].getExtension()
.getConfigurationElements());
break;
case IExtensionDelta.REMOVED:
removeNamespaceExtensions(delta[i].getExtension()
.getConfigurationElements());
break;
}
}
}
}
/**
* Remove extensions for identity namespace extension point
*
* @param members
* the members to remove
*/
protected void removeNamespaceExtensions(IConfigurationElement[] members) {
org.eclipse.ecf.core.util.Trace.entering(Activator.PLUGIN_ID,
IdentityDebugOptions.METHODS_ENTERING, Activator.class,
"removeNamespaceExtensions", members); //$NON-NLS-1$
for (int m = 0; m < members.length; m++) {
IConfigurationElement member = members[m];
String name = null;
try {
name = member.getAttribute(NAME_ATTRIBUTE);
if (name == null) {
name = member.getAttribute(CLASS_ATTRIBUTE);
}
if (name == null)
continue;
IIDFactory factory = IDFactory.getDefault();
Namespace n = factory.getNamespaceByName(name);
if (n == null || !factory.containsNamespace(n)) {
continue;
}
// remove
factory.removeNamespace(n);
org.eclipse.ecf.core.util.Trace.trace(Activator.PLUGIN_ID,
IdentityDebugOptions.DEBUG,
"removeNamespaceExtensions.removedNamespace(" //$NON-NLS-1$
+ n + ")"); //$NON-NLS-1$
} catch (Exception e) {
org.eclipse.ecf.core.util.Trace.catching(
Activator.PLUGIN_ID,
IdentityDebugOptions.EXCEPTIONS_CATCHING,
Activator.class, "removeNamespaceExtensions", e); //$NON-NLS-1$
getDefault().getLog().log(
new Status(IStatus.ERROR, Activator.PLUGIN_ID,
REMOVE_NAMESPACE_ERRORCODE,
"Exception removing namespace", e)); //$NON-NLS-1$
}
}
org.eclipse.ecf.core.util.Trace.exiting(Activator.PLUGIN_ID,
IdentityDebugOptions.METHODS_EXITING, Activator.class,
"removeNamespaceExtensions", members); //$NON-NLS-1$
}
/**
* Add identity namespace extension point extensions
*
* @param members
* the members to add
*/
protected void addNamespaceExtensions(IConfigurationElement[] members) {
org.eclipse.ecf.core.util.Trace.entering(Activator.PLUGIN_ID,
IdentityDebugOptions.METHODS_ENTERING, Activator.class,
"addNamespaceExtensions", members); //$NON-NLS-1$
String bundleName = getDefault().getBundle().getSymbolicName();
for (int m = 0; m < members.length; m++) {
IConfigurationElement member = members[m];
// Get the label of the extender plugin and the ID of the
// extension.
IExtension extension = member.getDeclaringExtension();
String nsName = null;
try {
Namespace ns = (Namespace) member
.createExecutableExtension(CLASS_ATTRIBUTE);
String clazz = ns.getClass().getName();
nsName = member.getAttribute(NAME_ATTRIBUTE);
if (nsName == null) {
nsName = clazz;
}
String nsDescription = member
.getAttribute(DESCRIPTION_ATTRIBUTE);
ns.initialize(nsName, nsDescription);
org.eclipse.ecf.core.util.Trace.trace(Activator.PLUGIN_ID,
IdentityDebugOptions.DEBUG,
"addNamespaceExtensions.createdNamespace(" + ns + ")"); //$NON-NLS-1$ //$NON-NLS-2$
// Check to see if we have a namespace name collision
if (IDFactory.getDefault().containsNamespace(ns))
throw new CoreException(
new Status(
Status.ERROR,
bundleName,
FACTORY_NAME_COLLISION_ERRORCODE,
"name=" //$NON-NLS-1$
+ nsName
+ ";extension point id=" //$NON-NLS-1$
+ extension
.getExtensionPointUniqueIdentifier(),
null));
// Now add to known namespaces
IDFactory.getDefault().addNamespace(ns);
org.eclipse.ecf.core.util.Trace.trace(Activator.PLUGIN_ID,
IdentityDebugOptions.DEBUG,
"addNamespaceExtensions.addedNamespaceToFactory(" + ns //$NON-NLS-1$
+ ")"); //$NON-NLS-1$
} catch (CoreException e) {
getDefault().getLog().log(e.getStatus());
org.eclipse.ecf.core.util.Trace.catching(
Activator.PLUGIN_ID,
IdentityDebugOptions.EXCEPTIONS_CATCHING,
Activator.class, "addNamespaceExtensions", e); //$NON-NLS-1$
} catch (Exception e) {
getDefault()
.getLog()
.log(
new Status(
Status.ERROR,
bundleName,
FACTORY_NAME_COLLISION_ERRORCODE,
"name=" //$NON-NLS-1$
+ nsName
+ ";extension point id=" //$NON-NLS-1$
+ extension
.getExtensionPointUniqueIdentifier(),
null));
org.eclipse.ecf.core.util.Trace.catching(
Activator.PLUGIN_ID,
IdentityDebugOptions.EXCEPTIONS_CATCHING,
Activator.class, "addNamespaceExtensions", e); //$NON-NLS-1$
}
}
org.eclipse.ecf.core.util.Trace.exiting(Activator.PLUGIN_ID,
IdentityDebugOptions.METHODS_EXITING, Activator.class,
"addNamespaceExtensions"); //$NON-NLS-1$
}
/**
* Setup identity namespace extension point
*
*/
public void setupNamespaceExtensionPoint() {
// Process extension points
IExtensionRegistry reg = getExtensionRegistry();
if (reg != null) {
IExtensionPoint extensionPoint = reg
.getExtensionPoint(NAMESPACE_EPOINT);
if (extensionPoint == null) {
return;
}
addNamespaceExtensions(extensionPoint.getConfigurationElements());
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.core.runtime.Plugin#stop(org.osgi.framework.BundleContext)
*/
public void stop(BundleContext context) throws Exception {
Trace.entering(Activator.PLUGIN_ID,
IdentityDebugOptions.METHODS_EXITING, Activator.class, "stop"); //$NON-NLS-1$
IExtensionRegistry reg = getExtensionRegistry();
if (reg != null)
reg.removeRegistryChangeListener(registryManager);
registryManager = null;
plugin = null;
if (debugOptionsTracker != null) {
debugOptionsTracker.close();
debugOptionsTracker = null;
}
if (extensionRegistryTracker != null) {
extensionRegistryTracker.close();
extensionRegistryTracker = null;
}
if (idFactoryServiceRegistration != null) {
idFactoryServiceRegistration.unregister();
idFactoryServiceRegistration = null;
}
super.stop(context);
}
/**
* Returns the shared instance
*
* @return the shared instance
*/
public static Activator getDefault() {
return plugin;
}
}
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