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/*******************************************************************************
* Copyright (C) 2007, Robin Rosenberg <robin.rosenberg@dewire.com>
* Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
* Copyright (C) 2008, Google Inc.
* Copyright (C) 2010, Matthias Sohn <matthias.sohn@sap.com>
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package org.eclipse.egit.core.op;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.IdentityHashMap;
import java.util.Map;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.SubMonitor;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.egit.core.Activator;
import org.eclipse.egit.core.internal.CoreText;
import org.eclipse.egit.core.internal.job.RuleUtil;
import org.eclipse.egit.core.project.GitProjectData;
import org.eclipse.egit.core.project.RepositoryMapping;
import org.eclipse.jgit.dircache.DirCache;
import org.eclipse.jgit.dircache.DirCacheEntry;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.osgi.util.NLS;
/**
* Tell JGit to ignore changes in selected files
*/
public class AssumeUnchangedOperation implements IEGitOperation {
private final Collection<? extends IResource> rsrcList;
private final Collection<IPath> locations;
private Repository db;
private final IdentityHashMap<Repository, DirCache> caches;
private final boolean assumeUnchanged;
/**
* Create a new operation to ignore changes in tracked files
*
* @param rsrcs
* collection of {@link IResource}s which should be ignored when
* looking for changes or committing.
* @param assumeUnchanged
* {@code true} to set the assume-valid flag in the git index
* entry, {@code false} to unset the assume-valid flag in the git
* index entry
*/
public AssumeUnchangedOperation(
final Collection<? extends IResource> rsrcs, boolean assumeUnchanged) {
rsrcList = rsrcs;
locations = Collections.emptyList();
caches = new IdentityHashMap<Repository, DirCache>();
this.assumeUnchanged = assumeUnchanged;
}
/**
* Create a new operation to ignore changes in tracked files
*
* @param repository
* a Git repository
* @param locations
* collection of {@link IPath}s which should be ignored when
* looking for changes or committing.
* @param assumeUnchanged
* {@code true} to set the assume-valid flag in the git index
* entry, {@code false} to unset the assume-valid flag in the git
* index entry
*/
public AssumeUnchangedOperation(final Repository repository,
final Collection<IPath> locations,
boolean assumeUnchanged) {
this.db = repository;
this.locations = locations;
this.rsrcList = Collections.emptyList();
caches = new IdentityHashMap<Repository, DirCache>();
this.assumeUnchanged = assumeUnchanged;
}
@Override
public void execute(IProgressMonitor monitor) throws CoreException {
SubMonitor progress = SubMonitor.convert(monitor, (rsrcList.size() + locations.size()) * 2);
progress.setTaskName(CoreText.AssumeUnchangedOperation_adding);
caches.clear();
try {
for (IResource resource : rsrcList) {
assumeValid(resource);
progress.worked(1);
}
for (IPath location : locations) {
assumeValid(location);
progress.worked(1);
}
progress.setWorkRemaining(caches.size());
for (Map.Entry<Repository, DirCache> e : caches.entrySet()) {
final Repository db = e.getKey();
final DirCache editor = e.getValue();
progress.setTaskName(NLS.bind(
CoreText.AssumeUnchangedOperation_writingIndex, db
.getDirectory()));
editor.write();
editor.commit();
progress.worked(1);
}
} catch (RuntimeException e) {
throw new CoreException(Activator.error(CoreText.UntrackOperation_failed, e));
} catch (IOException e) {
throw new CoreException(Activator.error(CoreText.UntrackOperation_failed, e));
} finally {
for (DirCache cache : caches.values()) {
cache.unlock();
}
caches.clear();
}
}
@Override
public ISchedulingRule getSchedulingRule() {
return RuleUtil.getRuleForRepositories(rsrcList.toArray(new IResource[rsrcList.size()]));
}
private void assumeValid(final IResource resource) throws CoreException {
final IProject proj = resource.getProject();
if (proj == null) {
return;
}
final GitProjectData pd = GitProjectData.get(proj);
if (pd == null) {
return;
}
final RepositoryMapping rm = pd.getRepositoryMapping(resource);
if (rm == null) {
return;
}
this.db = rm.getRepository();
assumeValid(resource.getLocation());
}
private void assumeValid(final IPath location) throws CoreException {
DirCache cache = caches.get(db);
if (cache == null) {
try {
cache = db.lockDirCache();
} catch (IOException err) {
throw new CoreException(Activator.error(CoreText.UntrackOperation_failed, err));
}
caches.put(db, cache);
}
IPath dbDir = new Path(db.getWorkTree().getAbsolutePath());
final String path = location.makeRelativeTo(dbDir).toString();
final DirCacheEntry ent = cache.getEntry(path);
if (ent != null) {
ent.setAssumeValid(assumeUnchanged);
}
}
}
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