| // Copyright (C) 2013 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.query.change; |
| |
| import com.google.gerrit.reviewdb.client.Change; |
| import com.google.gerrit.reviewdb.client.PatchSet; |
| import com.google.gerrit.reviewdb.client.Project; |
| import com.google.gerrit.reviewdb.client.RevId; |
| import com.google.gerrit.reviewdb.server.ReviewDb; |
| import com.google.gerrit.server.git.GitRepositoryManager; |
| import com.google.gerrit.server.query.OperatorPredicate; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.inject.Provider; |
| |
| import org.eclipse.jgit.errors.RepositoryNotFoundException; |
| import org.eclipse.jgit.lib.AnyObjectId; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| |
| /** |
| * Predicate which creates Repository, RevWalk objects and properly |
| * closes them. Git based operators should extend this predicate. |
| * |
| */ |
| public abstract class RevWalkPredicate extends OperatorPredicate<ChangeData> { |
| private static final Logger log = |
| LoggerFactory.getLogger(RevWalkPredicate.class); |
| |
| public static class Arguments { |
| public final PatchSet patchSet; |
| public final RevId revision; |
| public final AnyObjectId objectId; |
| public final Change change; |
| public final Project.NameKey projectName; |
| |
| public Arguments(PatchSet patchSet, |
| RevId revision, |
| AnyObjectId objectId, |
| Change change, |
| Project.NameKey projectName) { |
| this.patchSet = patchSet; |
| this.revision = revision; |
| this.objectId = objectId; |
| this.change = change; |
| this.projectName = projectName; |
| } |
| } |
| |
| public final Provider<ReviewDb> db; |
| public final GitRepositoryManager repoManager; |
| |
| public RevWalkPredicate(Provider<ReviewDb> db, |
| GitRepositoryManager repoManager, String operator, String ref) { |
| super(operator, ref); |
| this.db = db; |
| this.repoManager = repoManager; |
| } |
| |
| @Override |
| public boolean match(ChangeData object) throws OrmException { |
| final PatchSet patchSet = object.currentPatchSet(); |
| if (patchSet == null) { |
| return false; |
| } |
| |
| final RevId revision = patchSet.getRevision(); |
| if (revision == null) { |
| return false; |
| } |
| |
| final AnyObjectId objectId = ObjectId.fromString(revision.get()); |
| if (objectId == null) { |
| return false; |
| } |
| |
| Change change = object.change(); |
| if (change == null) { |
| return false; |
| } |
| |
| final Project.NameKey projectName = change.getProject(); |
| if (projectName == null) { |
| return false; |
| } |
| |
| Arguments args = new Arguments(patchSet, revision, objectId, change, projectName); |
| |
| try { |
| final Repository repo = repoManager.openRepository(projectName); |
| try { |
| final RevWalk rw = new RevWalk(repo); |
| try { |
| return match(repo, rw, args); |
| } finally { |
| rw.close(); |
| } |
| } finally { |
| repo.close(); |
| } |
| } catch (RepositoryNotFoundException e) { |
| log.error("Repository \"" + projectName.get() + "\" unknown.", e); |
| } catch (IOException e) { |
| log.error(projectName.get() + " cannot be read as a repository", e); |
| } |
| return false; |
| } |
| |
| public abstract boolean match(Repository repo, RevWalk rw, Arguments args); |
| } |