113 lines
4.0 KiB
Java
113 lines
4.0 KiB
Java
// Copyright (C) 2016 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package com.google.gerrit.server.git;
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import com.google.gerrit.common.Nullable;
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import com.google.gerrit.reviewdb.client.Branch;
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import com.google.gerrit.reviewdb.client.Project;
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import com.google.gerrit.reviewdb.client.SubmoduleSubscription;
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import com.google.gerrit.server.config.CanonicalWebUrl;
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import com.google.gerrit.server.git.MergeOpRepoManager.OpenRepo;
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import com.google.gerrit.server.project.NoSuchProjectException;
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import com.google.gerrit.server.util.RequestId;
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import com.google.gerrit.server.util.SubmoduleSectionParser;
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import com.google.inject.Inject;
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import com.google.inject.assistedinject.Assisted;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.Set;
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import org.eclipse.jgit.errors.ConfigInvalidException;
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import org.eclipse.jgit.lib.BlobBasedConfig;
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import org.eclipse.jgit.lib.FileMode;
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import org.eclipse.jgit.lib.ObjectId;
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import org.eclipse.jgit.revwalk.RevCommit;
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import org.eclipse.jgit.treewalk.TreeWalk;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* Loads the .gitmodules file of the specified project/branch. It can be queried which submodules
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* this branch is subscribed to.
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*/
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public class GitModules {
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private static final Logger log = LoggerFactory.getLogger(GitModules.class);
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public interface Factory {
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GitModules create(Branch.NameKey project, MergeOpRepoManager m);
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}
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private static final String GIT_MODULES = ".gitmodules";
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private final RequestId submissionId;
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Set<SubmoduleSubscription> subscriptions;
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@Inject
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GitModules(
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@CanonicalWebUrl @Nullable String canonicalWebUrl,
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@Assisted Branch.NameKey branch,
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@Assisted MergeOpRepoManager orm)
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throws IOException {
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this.submissionId = orm.getSubmissionId();
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Project.NameKey project = branch.getParentKey();
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logDebug("Loading .gitmodules of {} for project {}", branch, project);
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try {
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OpenRepo or = orm.getRepo(project);
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ObjectId id = or.repo.resolve(branch.get());
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if (id == null) {
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throw new IOException("Cannot open branch " + branch.get());
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}
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RevCommit commit = or.rw.parseCommit(id);
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try (TreeWalk tw = TreeWalk.forPath(or.repo, GIT_MODULES, commit.getTree())) {
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if (tw == null || (tw.getRawMode(0) & FileMode.TYPE_MASK) != FileMode.TYPE_FILE) {
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subscriptions = Collections.emptySet();
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logDebug("The .gitmodules file doesn't exist in " + branch);
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return;
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}
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}
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BlobBasedConfig bbc;
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try {
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bbc = new BlobBasedConfig(null, or.repo, commit, GIT_MODULES);
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} catch (ConfigInvalidException e) {
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throw new IOException(
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"Could not read .gitmodules of super project: " + branch.getParentKey(), e);
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}
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subscriptions = new SubmoduleSectionParser(bbc, canonicalWebUrl, branch).parseAllSections();
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} catch (NoSuchProjectException e) {
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throw new IOException(e);
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}
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}
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public Collection<SubmoduleSubscription> subscribedTo(Branch.NameKey src) {
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logDebug("Checking for a subscription of " + src);
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Collection<SubmoduleSubscription> ret = new ArrayList<>();
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for (SubmoduleSubscription s : subscriptions) {
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if (s.getSubmodule().equals(src)) {
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logDebug("Found " + s);
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ret.add(s);
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}
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}
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return ret;
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}
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private void logDebug(String msg, Object... args) {
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if (log.isDebugEnabled()) {
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log.debug(submissionId + msg, args);
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}
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}
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}
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