| /******************************************************************************* |
| * Copyright (c) 2007, 2008 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.equinox.internal.p2.rollback; |
| |
| import java.net.URL; |
| import java.util.*; |
| import org.eclipse.equinox.internal.p2.core.helpers.LogHelper; |
| import org.eclipse.equinox.internal.p2.core.helpers.ServiceHelper; |
| import org.eclipse.equinox.internal.p2.director.DirectorActivator; |
| import org.eclipse.equinox.internal.p2.director.IUTransformationHelper; |
| import org.eclipse.equinox.internal.provisional.p2.core.ProvisionException; |
| import org.eclipse.equinox.internal.provisional.p2.core.eventbus.IProvisioningEventBus; |
| import org.eclipse.equinox.internal.provisional.p2.core.eventbus.SynchronousProvisioningListener; |
| import org.eclipse.equinox.internal.provisional.p2.core.repository.IRepository; |
| import org.eclipse.equinox.internal.provisional.p2.engine.*; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.IInstallableUnit; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.MetadataFactory; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.MetadataFactory.InstallableUnitDescription; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.query.InstallableUnitQuery; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.repository.IMetadataRepository; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.repository.IMetadataRepositoryManager; |
| import org.eclipse.equinox.internal.provisional.p2.query.Collector; |
| import org.osgi.framework.Version; |
| |
| public class FormerState { |
| public static final String IUPROP_PREFIX = "---IUPROPERTY---"; //$NON-NLS-1$ |
| public static final String IUPROP_POSTFIX = "---IUPROPERTYKEY---"; //$NON-NLS-1$ |
| URL location = null; |
| |
| Hashtable generatedIUs = new Hashtable(); //key profile id, value the iu representing this profile |
| |
| public FormerState(URL repoLocation) { |
| if (repoLocation == null) |
| throw new IllegalArgumentException("Repository location can't be null"); //$NON-NLS-1$ |
| IProvisioningEventBus eventBus = (IProvisioningEventBus) ServiceHelper.getService(DirectorActivator.context, IProvisioningEventBus.SERVICE_NAME); |
| location = repoLocation; |
| |
| //listen for pre-event. to snapshot the profile |
| eventBus.addListener(new SynchronousProvisioningListener() { |
| public void notify(EventObject o) { |
| if (o instanceof BeginOperationEvent) { |
| BeginOperationEvent event = (BeginOperationEvent) o; |
| IInstallableUnit iuForProfile = profileToIU(event.getProfile()); |
| generatedIUs.put(event.getProfile().getProfileId(), iuForProfile); |
| } else if (o instanceof ProfileEvent) { |
| ProfileEvent event = (ProfileEvent) o; |
| if (event.getReason() == ProfileEvent.CHANGED) |
| getRepository().addInstallableUnits(new IInstallableUnit[] {(IInstallableUnit) generatedIUs.get(event.getProfileId())}); |
| return; |
| } else if (o instanceof RollbackOperationEvent) { |
| RollbackOperationEvent event = (RollbackOperationEvent) o; |
| generatedIUs.remove(event.getProfile().getProfileId()); |
| return; |
| } |
| //TODO We need to decide what to do on profile removal |
| // else if (o instanceof ProfileEvent) { |
| // ProfileEvent pe = (ProfileEvent) o; |
| // if (pe.getReason() == ProfileEvent.REMOVED) { |
| // profileRegistries.remove(pe.getProfile().getProfileId()); |
| // persist(); |
| // } |
| // } |
| } |
| |
| }); |
| } |
| |
| IMetadataRepository getRepository() { |
| IMetadataRepositoryManager manager = (IMetadataRepositoryManager) ServiceHelper.getService(DirectorActivator.context, IMetadataRepositoryManager.class.getName()); |
| try { |
| return manager.loadRepository(location, null); |
| } catch (ProvisionException e) { |
| //fall through and create a new repository |
| } |
| try { |
| IMetadataRepository repository = manager.createRepository(location, "Agent rollback repository", IMetadataRepositoryManager.TYPE_SIMPLE_REPOSITORY); //$NON-NLS-1$ |
| manager.addRepository(repository.getLocation()); |
| repository.setProperty(IRepository.PROP_SYSTEM, Boolean.TRUE.toString()); |
| return repository; |
| } catch (ProvisionException e) { |
| LogHelper.log(e); |
| } |
| throw new IllegalStateException("Unable to open or create Agent's rollback repository"); //$NON-NLS-1$ |
| } |
| |
| IInstallableUnit profileToIU(IProfile profile) { |
| InstallableUnitDescription result = new MetadataFactory.InstallableUnitDescription(); |
| result.setProperty(IInstallableUnit.PROP_TYPE_PROFILE, Boolean.TRUE.toString()); |
| result.setId(profile.getProfileId()); |
| result.setVersion(new Version(0, 0, 0, Long.toString(System.currentTimeMillis()))); |
| result.setRequiredCapabilities(IUTransformationHelper.toRequirements(profile.query(InstallableUnitQuery.ANY, new Collector(), null).iterator(), false)); |
| // Save the profile properties |
| // TODO we aren't marking these properties in any special way to indicate they came from profile properties. Should we? |
| Map properties = profile.getProperties(); |
| Iterator iter = properties.keySet().iterator(); |
| while (iter.hasNext()) { |
| String key = (String) iter.next(); |
| result.setProperty(key, (String) properties.get(key)); |
| } |
| // Save the IU profile properties |
| Iterator allIUs = profile.query(InstallableUnitQuery.ANY, new Collector(), null).iterator(); |
| while (allIUs.hasNext()) { |
| IInstallableUnit iu = (IInstallableUnit) allIUs.next(); |
| properties = profile.getInstallableUnitProperties(iu); |
| iter = properties.keySet().iterator(); |
| while (iter.hasNext()) { |
| String key = (String) iter.next(); |
| result.setProperty(IUPROP_PREFIX + iu.getId() + IUPROP_POSTFIX + key, (String) properties.get(key)); |
| } |
| } |
| |
| //TODO Do we need to mark profile with a special marker |
| return MetadataFactory.createInstallableUnit(result); |
| } |
| // private copyProperty(Profile p) { |
| // Map profileProperties = p.getValues(); |
| // } |
| } |