| /******************************************************************************* |
| * Copyright (c) 2007, 2009 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.engine; |
| |
| import org.eclipse.core.runtime.*; |
| import org.eclipse.equinox.internal.p2.core.helpers.LogHelper; |
| import org.eclipse.equinox.internal.provisional.p2.core.eventbus.IProvisioningEventBus; |
| import org.eclipse.equinox.p2.core.IProvisioningAgent; |
| import org.eclipse.equinox.p2.engine.*; |
| |
| /** |
| * TODO Move concrete class to non-API package |
| */ |
| public class Engine implements IEngine { |
| |
| private static final String ENGINE = "engine"; //$NON-NLS-1$ |
| private IProvisioningAgent agent; |
| |
| public Engine(IProvisioningAgent agent) { |
| this.agent = agent; |
| agent.registerService(ActionManager.SERVICE_NAME, new ActionManager()); |
| } |
| |
| private void checkArguments(IProfile iprofile, PhaseSet phaseSet, Operand[] operands, ProvisioningContext context, IProgressMonitor monitor) { |
| if (iprofile == null) |
| throw new IllegalArgumentException(Messages.null_profile); |
| |
| if (phaseSet == null) |
| throw new IllegalArgumentException(Messages.null_phaseset); |
| |
| if (operands == null) |
| throw new IllegalArgumentException(Messages.null_operands); |
| } |
| |
| public IStatus perform(IProvisioningPlan plan, IPhaseSet phaseSet, IProgressMonitor monitor) { |
| return perform(plan.getProfile(), phaseSet, ((ProvisioningPlan) plan).getOperands(), plan.getContext(), monitor); |
| } |
| |
| public IStatus perform(IProvisioningPlan plan, IProgressMonitor monitor) { |
| return perform(plan, PhaseSetFactory.createDefaultPhaseSet(), monitor); |
| } |
| |
| public IStatus perform(IProfile iprofile, IPhaseSet phases, Operand[] operands, ProvisioningContext context, IProgressMonitor monitor) { |
| PhaseSet phaseSet = (PhaseSet) phases; |
| checkArguments(iprofile, phaseSet, operands, context, monitor); |
| SimpleProfileRegistry profileRegistry = (SimpleProfileRegistry) agent.getService(IProfileRegistry.SERVICE_NAME); |
| IProvisioningEventBus eventBus = (IProvisioningEventBus) agent.getService(IProvisioningEventBus.SERVICE_NAME); |
| |
| if (context == null) |
| context = new ProvisioningContext(agent); |
| |
| if (monitor == null) |
| monitor = new NullProgressMonitor(); |
| |
| Profile profile = profileRegistry.validate(iprofile); |
| |
| profileRegistry.lockProfile(profile); |
| try { |
| eventBus.publishEvent(new BeginOperationEvent(profile, phaseSet, operands, this)); |
| if (DebugHelper.DEBUG_ENGINE) |
| DebugHelper.debug(ENGINE, "Beginning engine operation for profile=" + profile.getProfileId() + " [" + profile.getTimestamp() + "]:" + DebugHelper.LINE_SEPARATOR + DebugHelper.formatOperation(phaseSet, operands, context)); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$ |
| |
| EngineSession session = new EngineSession(agent, profile, context); |
| |
| MultiStatus result = phaseSet.perform(session, operands, monitor); |
| if (result.isOK() || result.matches(IStatus.INFO | IStatus.WARNING)) { |
| if (DebugHelper.DEBUG_ENGINE) |
| DebugHelper.debug(ENGINE, "Preparing to commit engine operation for profile=" + profile.getProfileId()); //$NON-NLS-1$ |
| result.merge(session.prepare(monitor)); |
| } |
| if (result.matches(IStatus.ERROR | IStatus.CANCEL)) { |
| if (DebugHelper.DEBUG_ENGINE) |
| DebugHelper.debug(ENGINE, "Rolling back engine operation for profile=" + profile.getProfileId() + ". Reason was: " + result.toString()); //$NON-NLS-1$ //$NON-NLS-2$ |
| IStatus status = session.rollback(monitor, result.getSeverity()); |
| if (status.matches(IStatus.ERROR)) |
| LogHelper.log(status); |
| eventBus.publishEvent(new RollbackOperationEvent(profile, phaseSet, operands, this, result)); |
| } else { |
| if (DebugHelper.DEBUG_ENGINE) |
| DebugHelper.debug(ENGINE, "Committing engine operation for profile=" + profile.getProfileId()); //$NON-NLS-1$ |
| if (profile.isChanged()) |
| profileRegistry.updateProfile(profile); |
| IStatus status = session.commit(monitor); |
| if (status.matches(IStatus.ERROR)) |
| LogHelper.log(status); |
| eventBus.publishEvent(new CommitOperationEvent(profile, phaseSet, operands, this)); |
| } |
| //if there is only one child status, return that status instead because it will have more context |
| IStatus[] children = result.getChildren(); |
| return children.length == 1 ? children[0] : result; |
| } finally { |
| profileRegistry.unlockProfile(profile); |
| profile.setChanged(false); |
| } |
| } |
| |
| protected IStatus validate(IProfile iprofile, PhaseSet phaseSet, Operand[] operands, ProvisioningContext context, IProgressMonitor monitor) { |
| checkArguments(iprofile, phaseSet, operands, context, monitor); |
| |
| if (context == null) |
| context = new ProvisioningContext(agent); |
| |
| if (monitor == null) |
| monitor = new NullProgressMonitor(); |
| |
| ActionManager actionManager = (ActionManager) agent.getService(ActionManager.SERVICE_NAME); |
| return phaseSet.validate(actionManager, iprofile, operands, context, monitor); |
| } |
| |
| public IProvisioningPlan createPlan(IProfile profile, ProvisioningContext context) { |
| return new ProvisioningPlan(profile, null, context); |
| } |
| } |