// Copyright (C) 2009 The Android Open Source Project
//
// 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.google.gerrit.server.patch;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gerrit.reviewdb.client.PatchSet;
import com.google.gerrit.reviewdb.client.PatchSetInfo;
import com.google.gerrit.reviewdb.client.RevId;
import com.google.gerrit.reviewdb.client.UserIdentity;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.account.AccountByEmailCache;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import java.io.IOException;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
/**
* Factory class creating PatchSetInfo from meta-data found in Git repository.
*/
@Singleton
public class PatchSetInfoFactory {
private final GitRepositoryManager repoManager;
private final AccountByEmailCache byEmailCache;
@Inject
public PatchSetInfoFactory(final GitRepositoryManager grm,
final AccountByEmailCache byEmailCache) {
this.repoManager = grm;
this.byEmailCache = byEmailCache;
}
public PatchSetInfo get(RevCommit src, PatchSet.Id psi) {
PatchSetInfo info = new PatchSetInfo(psi);
info.setSubject(src.getShortMessage());
info.setMessage(src.getFullMessage());
info.setAuthor(toUserIdentity(src.getAuthorIdent()));
info.setCommitter(toUserIdentity(src.getCommitterIdent()));
info.setRevId(src.getName());
return info;
}
public PatchSetInfo get(ReviewDb db, PatchSet.Id patchSetId)
throws PatchSetInfoNotAvailableException {
try {
final PatchSet patchSet = db.patchSets().get(patchSetId);
final Change change = db.changes().get(patchSet.getId().getParentKey());
return get(change, patchSet);
} catch (OrmException e) {
throw new PatchSetInfoNotAvailableException(e);
}
}
public PatchSetInfo get(Change change, PatchSet patchSet)
throws PatchSetInfoNotAvailableException {
Repository repo;
try {
repo = repoManager.openRepository(change.getProject());
} catch (IOException e) {
throw new PatchSetInfoNotAvailableException(e);
}
try {
final RevWalk rw = new RevWalk(repo);
try {
final RevCommit src =
rw.parseCommit(ObjectId.fromString(patchSet.getRevision().get()));
PatchSetInfo info = get(src, patchSet.getId());
info.setParents(toParentInfos(src.getParents(), rw));
return info;
} finally {
rw.release();
}
} catch (IOException e) {
throw new PatchSetInfoNotAvailableException(e);
} finally {
repo.close();
}
}
private UserIdentity toUserIdentity(final PersonIdent who) {
final UserIdentity u = new UserIdentity();
u.setName(who.getName());
u.setEmail(who.getEmailAddress());
u.setDate(new Timestamp(who.getWhen().getTime()));
u.setTimeZone(who.getTimeZoneOffset());
// If only one account has access to this email address, select it
// as the identity of the user.
//
final Set<Account.Id> a = byEmailCache.get(u.getEmail());
if (a.size() == 1) {
u.setAccount(a.iterator().next());
}
return u;
}
private List<PatchSetInfo.ParentInfo> toParentInfos(final RevCommit[] parents,
final RevWalk walk) throws IOException, MissingObjectException {
List<PatchSetInfo.ParentInfo> pInfos =
new ArrayList<PatchSetInfo.ParentInfo>(parents.length);
for (RevCommit parent : parents) {
walk.parseBody(parent);
RevId rev = new RevId(parent.getId().name());
String msg = parent.getShortMessage();
pInfos.add(new PatchSetInfo.ParentInfo(rev, msg));
}
return pInfos;
}
}