| /******************************************************************************* |
| * 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.director; |
| |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import org.eclipse.core.runtime.*; |
| import org.eclipse.equinox.internal.p2.core.helpers.ServiceHelper; |
| import org.eclipse.equinox.internal.p2.rollback.FormerState; |
| import org.eclipse.equinox.internal.provisional.p2.core.location.AgentLocation; |
| import org.eclipse.equinox.internal.provisional.p2.director.*; |
| import org.eclipse.equinox.internal.provisional.p2.engine.*; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.IInstallableUnit; |
| import org.eclipse.osgi.util.NLS; |
| |
| public class SimpleDirector implements IDirector { |
| private static final String ROLLBACK_LOCATION = "rollback"; //$NON-NLS-1$ |
| static final int PlanWork = 10; |
| static final int EngineWork = 100; |
| private IEngine engine; |
| private IPlanner planner; |
| |
| public SimpleDirector() { |
| initializeRollbackRepository(); |
| engine = (IEngine) ServiceHelper.getService(DirectorActivator.context, IEngine.SERVICE_NAME); |
| if (engine == null) |
| throw new IllegalStateException("Provisioning engine is not registered"); //$NON-NLS-1$ |
| planner = (IPlanner) ServiceHelper.getService(DirectorActivator.context, IPlanner.class.getName()); |
| if (planner == null) |
| throw new IllegalStateException("Unable to find provisioning planner"); //$NON-NLS-1$ |
| } |
| |
| private void initializeRollbackRepository() { |
| new FormerState(getRollbackRepositoryLocation()); |
| } |
| |
| public URL getRollbackRepositoryLocation() { |
| AgentLocation agentLocation = (AgentLocation) ServiceHelper.getService(DirectorActivator.context, AgentLocation.class.getName()); |
| try { |
| return new URL(agentLocation.getDataArea(DirectorActivator.PI_DIRECTOR), ROLLBACK_LOCATION); |
| } catch (MalformedURLException e) { |
| //we know this can't happen because the above URL is well-formed |
| return null; |
| } |
| } |
| |
| public IStatus revert(IInstallableUnit target, IProfile profile, ProvisioningContext context, IProgressMonitor monitor) { |
| SubMonitor sub = SubMonitor.convert(monitor, Messages.Director_Task_Updating, PlanWork + EngineWork); |
| try { |
| ProvisioningPlan plan = planner.getRevertPlan(target, context, sub.newChild(PlanWork)); |
| if (!plan.getStatus().isOK()) |
| return plan.getStatus(); |
| return engine.perform(profile, new DefaultPhaseSet(), plan.getOperands(), context, sub.newChild(EngineWork)); |
| } finally { |
| sub.done(); |
| } |
| } |
| |
| public IStatus provision(ProfileChangeRequest request, ProvisioningContext context, IProgressMonitor monitor) { |
| String taskName = NLS.bind(Messages.Director_Task_Installing, request.getProfile().getProperty(IProfile.PROP_INSTALL_FOLDER)); |
| SubMonitor sub = SubMonitor.convert(monitor, taskName, PlanWork + EngineWork); |
| try { |
| IInstallableUnit[] installRoots = request.getAddedInstallableUnits(); |
| // mark the roots as such |
| for (int i = 0; i < installRoots.length; i++) { |
| request.setInstallableUnitProfileProperty(installRoots[i], IInstallableUnit.PROP_PROFILE_ROOT_IU, Boolean.toString(true)); |
| } |
| ProvisioningPlan plan = planner.getProvisioningPlan(request, context, sub.newChild(PlanWork)); |
| if (!plan.getStatus().isOK()) |
| return plan.getStatus(); |
| |
| IStatus engineResult = engine.perform(request.getProfile(), new DefaultPhaseSet(), plan.getOperands(), context, sub.newChild(EngineWork)); |
| return engineResult; |
| } finally { |
| sub.done(); |
| } |
| } |
| } |