| /******************************************************************************* |
| * Copyright (c) 2005, 2006 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.internal.registry.osgi; |
| |
| import org.eclipse.core.internal.registry.RegistryMessages; |
| import org.eclipse.core.internal.runtime.RuntimeLog; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.osgi.service.datalocation.Location; |
| import org.eclipse.osgi.service.debug.DebugOptions; |
| import org.osgi.framework.*; |
| import org.osgi.service.packageadmin.PackageAdmin; |
| import org.osgi.util.tracker.ServiceTracker; |
| |
| /** |
| * The class contains a set of helper methods for the runtime content plugin. |
| * The closeServices() method should be called before the plugin is stopped. |
| * |
| * @since org.eclipse.equinox.registry 3.2 |
| */ |
| public class OSGIUtils { |
| private ServiceTracker<?, ?> debugTracker = null; |
| private ServiceTracker<?, ?> bundleTracker = null; |
| private ServiceTracker<?, ?> configurationLocationTracker = null; |
| |
| // OSGI system properties. Copied from EclipseStarter |
| public static final String PROP_CONFIG_AREA = "osgi.configuration.area"; //$NON-NLS-1$ |
| public static final String PROP_INSTANCE_AREA = "osgi.instance.area"; //$NON-NLS-1$ |
| |
| private static final OSGIUtils singleton = new OSGIUtils(); |
| |
| public static OSGIUtils getDefault() { |
| return singleton; |
| } |
| |
| /** |
| * Private constructor to block instance creation. |
| */ |
| private OSGIUtils() { |
| super(); |
| initServices(); |
| } |
| |
| private void initServices() { |
| BundleContext context = Activator.getContext(); |
| if (context == null) { |
| RuntimeLog.log(new Status(IStatus.ERROR, RegistryMessages.OWNER_NAME, 0, RegistryMessages.bundle_not_activated, null)); |
| return; |
| } |
| |
| debugTracker = new ServiceTracker<>(context, DebugOptions.class.getName(), null); |
| debugTracker.open(); |
| |
| bundleTracker = new ServiceTracker<>(context, PackageAdmin.class.getName(), null); |
| bundleTracker.open(); |
| |
| // locations |
| final String FILTER_PREFIX = "(&(objectClass=org.eclipse.osgi.service.datalocation.Location)(type="; //$NON-NLS-1$ |
| Filter filter = null; |
| try { |
| filter = context.createFilter(FILTER_PREFIX + PROP_CONFIG_AREA + "))"); //$NON-NLS-1$ |
| } catch (InvalidSyntaxException e) { |
| // ignore this. It should never happen as we have tested the above format. |
| } |
| configurationLocationTracker = new ServiceTracker<>(context, filter, null); |
| configurationLocationTracker.open(); |
| |
| } |
| |
| void closeServices() { |
| if (debugTracker != null) { |
| debugTracker.close(); |
| debugTracker = null; |
| } |
| if (bundleTracker != null) { |
| bundleTracker.close(); |
| bundleTracker = null; |
| } |
| if (configurationLocationTracker != null) { |
| configurationLocationTracker.close(); |
| configurationLocationTracker = null; |
| } |
| } |
| |
| public boolean getBooleanDebugOption(String option, boolean defaultValue) { |
| if (debugTracker == null) { |
| RuntimeLog.log(new Status(IStatus.ERROR, RegistryMessages.OWNER_NAME, 0, RegistryMessages.bundle_not_activated, null)); |
| return defaultValue; |
| } |
| DebugOptions options = (DebugOptions) debugTracker.getService(); |
| if (options != null) { |
| String value = options.getOption(option); |
| if (value != null) |
| return value.equalsIgnoreCase("true"); //$NON-NLS-1$ |
| } |
| return defaultValue; |
| } |
| |
| public PackageAdmin getPackageAdmin() { |
| if (bundleTracker == null) { |
| RuntimeLog.log(new Status(IStatus.ERROR, RegistryMessages.OWNER_NAME, 0, RegistryMessages.bundle_not_activated, null)); |
| return null; |
| } |
| return (PackageAdmin) bundleTracker.getService(); |
| } |
| |
| public Bundle getBundle(String bundleName) { |
| PackageAdmin packageAdmin = getPackageAdmin(); |
| if (packageAdmin == null) |
| return null; |
| Bundle[] bundles = packageAdmin.getBundles(bundleName, null); |
| if (bundles == null) |
| return null; |
| //Return the first bundle that is not installed or uninstalled |
| for (int i = 0; i < bundles.length; i++) { |
| if ((bundles[i].getState() & (Bundle.INSTALLED | Bundle.UNINSTALLED)) == 0) { |
| return bundles[i]; |
| } |
| } |
| return null; |
| } |
| |
| public Bundle[] getFragments(Bundle bundle) { |
| PackageAdmin packageAdmin = getPackageAdmin(); |
| if (packageAdmin == null) |
| return null; |
| return packageAdmin.getFragments(bundle); |
| } |
| |
| public boolean isFragment(Bundle bundle) { |
| PackageAdmin packageAdmin = getPackageAdmin(); |
| if (packageAdmin == null) |
| return false; |
| return (packageAdmin.getBundleType(bundle) & PackageAdmin.BUNDLE_TYPE_FRAGMENT) > 0; |
| } |
| |
| public Bundle[] getHosts(Bundle bundle) { |
| PackageAdmin packageAdmin = getPackageAdmin(); |
| if (packageAdmin == null) |
| return null; |
| return packageAdmin.getHosts(bundle); |
| } |
| |
| public Location getConfigurationLocation() { |
| if (configurationLocationTracker == null) |
| return null; |
| return (Location) configurationLocationTracker.getService(); |
| } |
| } |