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/*******************************************************************************
* Copyright (c) 2007, 2010 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.provisional.p2.director;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.equinox.p2.engine.IProfile;
import org.eclipse.equinox.p2.engine.ProvisioningContext;
import org.eclipse.equinox.p2.planner.IProfileChangeRequest;
/**
* Directors are responsible for determining what should be done to a given
* profile to reshape it as requested. That is, given the current state of a
* profile, a description of the desired end state of that profile and metadata
* describing the available IUs, a director produces a list of provisioning
* operations (e.g., install, update or uninstall) to perform on the related IUs.
* Directors are also able to validate profiles and assist in the diagnosis of
* configuration errors. Note that directors may range in complexity from
* very simple (e.g., reading a list of bundles from a static file) to very complex.
*/
public interface IDirector {
/**
* Service name constant for the director service.
*/
public static final String SERVICE_NAME = IDirector.class.getName();
/**
* performs the change request with the given context.
*
* @param profileChangeRequest The change request
* @param context The provisioning context used for finding resources
* @param monitor a progress monitor, or <code>null</code> if progress
* reporting is not desired
*/
public IStatus provision(IProfileChangeRequest profileChangeRequest, ProvisioningContext context, IProgressMonitor monitor);
/**
* Reverts the profile to a previous state described in the target revertProfile.
*
* @param profile The profile to revert
* @param revertProfile The profile snapshot state to revert to
* @param context The provisioning context used for finding resources
* @param monitor a progress monitor, or <code>null</code> if progress
* reporting is not desired
*/
public IStatus revert(IProfile profile, IProfile revertProfile, ProvisioningContext context, IProgressMonitor monitor);
}
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