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/*
* Copyright 2013 gitblit.com.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.gitblit;
import java.text.MessageFormat;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.lib.RefUpdate.Result;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.StoredConfig;
import org.eclipse.jgit.transport.FetchResult;
import org.eclipse.jgit.transport.RemoteConfig;
import org.eclipse.jgit.transport.TrackingRefUpdate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.gitblit.models.RepositoryModel;
import com.gitblit.models.UserModel;
import com.gitblit.utils.JGitUtils;
/**
* The Mirror executor handles periodic fetching of mirrored repositories.
*
* @author James Moger
*
*/
public class MirrorExecutor implements Runnable {
private final Logger logger = LoggerFactory.getLogger(MirrorExecutor.class);
private final Set<String> repairAttempted = Collections.synchronizedSet(new HashSet<String>());
private final IStoredSettings settings;
private AtomicBoolean running = new AtomicBoolean(false);
private AtomicBoolean forceClose = new AtomicBoolean(false);
private final UserModel gitblitUser;
public MirrorExecutor(IStoredSettings settings) {
this.settings = settings;
this.gitblitUser = new UserModel("gitblit");
this.gitblitUser.displayName = "Gitblit";
}
public boolean isReady() {
return settings.getBoolean(Keys.git.enableMirroring, false);
}
public boolean isRunning() {
return running.get();
}
public void close() {
forceClose.set(true);
}
@Override
public void run() {
if (!isReady()) {
return;
}
running.set(true);
for (String repositoryName : GitBlit.self().getRepositoryList()) {
if (forceClose.get()) {
break;
}
if (GitBlit.self().isCollectingGarbage(repositoryName)) {
logger.debug("mirror is skipping {} garbagecollection", repositoryName);
continue;
}
RepositoryModel model = null;
Repository repository = null;
try {
model = GitBlit.self().getRepositoryModel(repositoryName);
if (!model.isMirror && !model.isBare) {
// repository must be a valid bare git mirror
logger.debug("mirror is skipping {} !mirror !bare", repositoryName);
continue;
}
repository = GitBlit.self().getRepository(repositoryName);
if (repository == null) {
logger.warn(MessageFormat.format("MirrorExecutor is missing repository {0}?!?", repositoryName));
continue;
}
// automatically repair (some) invalid fetch ref specs
if (!repairAttempted.contains(repositoryName)) {
repairAttempted.add(repositoryName);
JGitUtils.repairFetchSpecs(repository);
}
// find the first mirror remote - there should only be one
StoredConfig rc = repository.getConfig();
RemoteConfig mirror = null;
List<RemoteConfig> configs = RemoteConfig.getAllRemoteConfigs(rc);
for (RemoteConfig config : configs) {
if (config.isMirror()) {
mirror = config;
break;
}
}
if (mirror == null) {
// repository does not have a mirror remote
logger.debug("mirror is skipping {} no mirror remote found", repositoryName);
continue;
}
logger.debug("checking {} remote {} for ref updates", repositoryName, mirror.getName());
final boolean testing = false;
Git git = new Git(repository);
FetchResult result = git.fetch().setRemote(mirror.getName()).setDryRun(testing).call();
Collection<TrackingRefUpdate> refUpdates = result.getTrackingRefUpdates();
if (refUpdates.size() > 0) {
for (TrackingRefUpdate ru : refUpdates) {
StringBuilder sb = new StringBuilder();
sb.append("updated mirror ");
sb.append(repositoryName);
sb.append(" ");
sb.append(ru.getRemoteName());
sb.append(" -> ");
sb.append(ru.getLocalName());
if (ru.getResult() == Result.FORCED) {
sb.append(" (forced)");
}
sb.append(" ");
sb.append(ru.getOldObjectId() == null ? "" : ru.getOldObjectId().abbreviate(7).name());
sb.append("..");
sb.append(ru.getNewObjectId() == null ? "" : ru.getNewObjectId().abbreviate(7).name());
logger.info(sb.toString());
}
}
} catch (Exception e) {
logger.error("Error updating mirror " + repositoryName, e);
} finally {
// cleanup
if (repository != null) {
repository.close();
}
}
}
running.set(false);
}
}
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