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/*******************************************************************************
* Copyright (c) 2013 Red Hat, Inc. 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:
* Red Hat, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.p2.operations;
import java.util.*;
import org.eclipse.core.runtime.*;
import org.eclipse.equinox.internal.p2.director.ProfileChangeRequest;
import org.eclipse.equinox.internal.p2.operations.Messages;
import org.eclipse.equinox.internal.p2.operations.RequestFlexer;
import org.eclipse.equinox.p2.engine.IProfile;
import org.eclipse.equinox.p2.planner.IPlanner;
import org.eclipse.equinox.p2.planner.IProfileChangeRequest;
//TODO Javadoc
public class RemediationOperation extends ProfileChangeOperation {
private static int ZERO_WEIGHT = 0;
private static int LOW_WEIGHT = 1;
private static int MEDIUM_WEIGHT = 2;
private static int HIGH_WEIGHT = 3;
private List<Remedy> remedies;
private Remedy bestSolutionChangingTheRequest;
private Remedy bestSolutionChangingWhatIsInstalled;
private Remedy userSelectedRemedy;
private IProfileChangeRequest originalRequest;
private boolean isCheckForUpdates;
public boolean isCheckForUpdates() {
return isCheckForUpdates;
}
public RemediationOperation(ProvisioningSession session, IProfileChangeRequest iProfileChangeRequest) {
this(session, iProfileChangeRequest, null);
}
public RemediationOperation(ProvisioningSession session, IProfileChangeRequest originalRequest, List<RemedyConfig> configuration) {
this(session, originalRequest, false);
}
public RemediationOperation(ProvisioningSession session, IProfileChangeRequest originalRequest, boolean isCheckForUpdates) {
super(session);
this.originalRequest = originalRequest;
remedies = new ArrayList<Remedy>();
this.isCheckForUpdates = isCheckForUpdates;
}
public Remedy bestSolutionChangingTheRequest() {
return bestSolutionChangingTheRequest;
}
public Remedy bestSolutionChangingWhatIsInstalled() {
return bestSolutionChangingWhatIsInstalled;
}
public List<Remedy> getRemedies() {
return remedies;
}
@Override
protected void computeProfileChangeRequest(MultiStatus status, IProgressMonitor monitor) {
if (userSelectedRemedy != null) {
request = userSelectedRemedy.getRequest();
return;
}
try {
if (isCheckForUpdates)
status.add(computeCheckForUpdates(monitor));
else
status.add(computeAllRemediations(monitor));
} catch (OperationCanceledException e) {
status.add(Status.CANCEL_STATUS);
}
if (!isCheckForUpdates)
determineBestSolutions();
}
private IStatus computeCheckForUpdates(IProgressMonitor monitor) {
RemedyConfig config = new RemedyConfig();
config.allowDifferentVersion = true;
config.allowInstalledRemoval = false;
config.allowInstalledUpdate = true;
config.allowPartialInstall = false;
Remedy remedy = computeRemedy(config, monitor);
if (remedy != null) {
remedies.add(remedy);
}
return Status.OK_STATUS;
}
private IStatus computeAllRemediations(IProgressMonitor monitor) {
RemedyConfig[] remedyConfigs = RemedyConfig.getAllRemdyConfigs();
SubMonitor sub = SubMonitor.convert(monitor, remedyConfigs.length);
sub.setTaskName("Looking for alternate solutions");
List<Remedy> tmpRemedies = new ArrayList<Remedy>(remedyConfigs.length);
try {
for (int i = 0; i < remedyConfigs.length; i++) {
sub.subTask(i + " out of " + remedyConfigs.length); //$NON-NLS-1$
if (sub.isCanceled())
return Status.CANCEL_STATUS;
Remedy remedy = computeRemedy(remedyConfigs[i], sub.newChild(1, SubMonitor.SUPPRESS_ALL_LABELS));
if (remedy != null) {
tmpRemedies.add(remedy);
}
}
} finally {
sub.done();
}
remedies = tmpRemedies;
return Status.OK_STATUS;
}
private void determineBestSolutions() {
int beingInstalledWeight = 0;
int installationWeight = 0;
for (Iterator<Remedy> iterator = remedies.iterator(); iterator.hasNext();) {
Remedy remedy = iterator.next();
if (remedy.getRequest() != null) {
if (remedy.getBeingInstalledRelaxedWeight() > beingInstalledWeight && remedy.getInstallationRelaxedWeight() == 0) {
bestSolutionChangingTheRequest = remedy;
beingInstalledWeight = remedy.getBeingInstalledRelaxedWeight();
continue;
}
if (remedy.getInstallationRelaxedWeight() > installationWeight && remedy.getBeingInstalledRelaxedWeight() == 0) {
bestSolutionChangingWhatIsInstalled = remedy;
installationWeight = remedy.getInstallationRelaxedWeight();
continue;
}
request = remedy.getRequest();
}
}
if (bestSolutionChangingTheRequest != null)
request = bestSolutionChangingTheRequest.getRequest();
else if (bestSolutionChangingWhatIsInstalled != null)
request = bestSolutionChangingWhatIsInstalled.getRequest();
}
private Remedy computeRemedy(RemedyConfig configuration, IProgressMonitor monitor) {
Remedy remedy = new Remedy();
remedy.setConfig(configuration);
IPlanner planner = session.getPlanner();
IProfile profile = session.getProfileRegistry().getProfile(profileId);
//request = (ProfileChangeRequest) originalRequest.clone();
RequestFlexer av = new RequestFlexer(planner);
av.setAllowDifferentVersion(configuration.allowDifferentVersion);
av.setAllowInstalledElementChange(configuration.allowInstalledUpdate);
av.setAllowInstalledElementRemoval(configuration.allowInstalledRemoval);
av.setAllowPartialInstall(configuration.allowPartialInstall);
av.setProvisioningContext(getProvisioningContext());
remedy.setRequest((ProfileChangeRequest) av.getChangeRequest(originalRequest, profile, monitor));
if (remedy.getRequest() == null)
return null;
if (configuration.allowInstalledUpdate && !configuration.allowInstalledRemoval) {
remedy.setInstallationRelaxedWeight(HIGH_WEIGHT);
} else if (!configuration.allowInstalledUpdate && configuration.allowInstalledRemoval) {
remedy.setInstallationRelaxedWeight(MEDIUM_WEIGHT);
} else if (configuration.allowInstalledUpdate && configuration.allowInstalledRemoval) {
remedy.setInstallationRelaxedWeight(LOW_WEIGHT);
} else
remedy.setInstallationRelaxedWeight(ZERO_WEIGHT);
if (configuration.allowDifferentVersion && !configuration.allowPartialInstall) {
remedy.setBeingInstalledRelaxedWeight(HIGH_WEIGHT);
} else if (!configuration.allowDifferentVersion && configuration.allowPartialInstall) {
remedy.setBeingInstalledRelaxedWeight(MEDIUM_WEIGHT);
} else if (configuration.allowDifferentVersion && configuration.allowPartialInstall) {
remedy.setBeingInstalledRelaxedWeight(LOW_WEIGHT);
} else {
remedy.setBeingInstalledRelaxedWeight(ZERO_WEIGHT);
}
return remedy;
}
@Override
protected String getResolveJobName() {
return Messages.RemediationOperation_ResolveJobName;
}
@Override
protected String getProvisioningJobName() {
return Messages.RemediationOperation_RemediationJobName;
}
public void setSelectedRemedy(Remedy remedy) {
this.userSelectedRemedy = remedy;
}
public ProvisioningJob getProvisioningJob(IProgressMonitor monitor) {
IStatus status = getResolutionResult();
// planner.resolve();
if (status.getSeverity() != IStatus.CANCEL && status.getSeverity() != IStatus.ERROR) {
if (job.getProvisioningPlan() != null) {
ProfileModificationJob pJob = new ProfileModificationJob(getProvisioningJobName(), session, profileId, job.getProvisioningPlan(), job.getActualProvisioningContext());
pJob.setAdditionalProgressMonitor(monitor);
return pJob;
}
}
return null;
}
public boolean hasRemedies() {
return (remedies != null && remedies.size() > 0);
}
public ProfileChangeRequest getOriginalRequest() {
return (ProfileChangeRequest) originalRequest;
}
}
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