com.google.gerrit.server.project.CommitsCollection.java Source code

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Here is the source code for com.google.gerrit.server.project.CommitsCollection.java

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// Copyright (C) 2014 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.project;

import com.google.gerrit.extensions.registration.DynamicMap;
import com.google.gerrit.extensions.restapi.ChildCollection;
import com.google.gerrit.extensions.restapi.IdString;
import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
import com.google.gerrit.extensions.restapi.RestView;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;

import org.eclipse.jgit.errors.IncorrectObjectTypeException;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;

import java.io.IOException;

@Singleton
public class CommitsCollection implements ChildCollection<ProjectResource, CommitResource> {
    private final DynamicMap<RestView<CommitResource>> views;
    private final GitRepositoryManager repoManager;
    private final Provider<ReviewDb> db;

    @Inject
    public CommitsCollection(DynamicMap<RestView<CommitResource>> views, GitRepositoryManager repoManager,
            Provider<ReviewDb> db) {
        this.views = views;
        this.repoManager = repoManager;
        this.db = db;
    }

    @Override
    public RestView<ProjectResource> list() throws ResourceNotFoundException {
        throw new ResourceNotFoundException();
    }

    @Override
    public CommitResource parse(ProjectResource parent, IdString id) throws ResourceNotFoundException, IOException {
        ObjectId objectId;
        try {
            objectId = ObjectId.fromString(id.get());
        } catch (IllegalArgumentException e) {
            throw new ResourceNotFoundException(id);
        }

        try (Repository repo = repoManager.openRepository(parent.getNameKey()); RevWalk rw = new RevWalk(repo)) {
            RevCommit commit = rw.parseCommit(objectId);
            rw.parseBody(commit);
            if (!parent.getControl().canReadCommit(db.get(), rw, commit)) {
                throw new ResourceNotFoundException(id);
            }
            for (int i = 0; i < commit.getParentCount(); i++) {
                rw.parseBody(rw.parseCommit(commit.getParent(i)));
            }
            return new CommitResource(parent, commit);
        } catch (MissingObjectException | IncorrectObjectTypeException e) {
            throw new ResourceNotFoundException(id);
        }
    }

    @Override
    public DynamicMap<RestView<CommitResource>> views() {
        return views;
    }
}