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// 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.restapi.project;
import static java.nio.charset.StandardCharsets.UTF_8;
import com.google.gerrit.common.data.GarbageCollectionResult;
import com.google.gerrit.common.data.GlobalCapability;
import com.google.gerrit.extensions.annotations.RequiresCapability;
import com.google.gerrit.extensions.restapi.BinaryResult;
import com.google.gerrit.extensions.restapi.Response;
import com.google.gerrit.extensions.restapi.RestModifyView;
import com.google.gerrit.extensions.webui.UiAction;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gerrit.server.config.CanonicalWebUrl;
import com.google.gerrit.server.git.GarbageCollection;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.git.LocalDiskRepositoryManager;
import com.google.gerrit.server.git.WorkQueue;
import com.google.gerrit.server.ioutil.HexFormat;
import com.google.gerrit.server.project.ProjectResource;
import com.google.gerrit.server.restapi.project.GarbageCollect.Input;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.Collections;
@RequiresCapability(GlobalCapability.RUN_GC)
@Singleton
public class GarbageCollect
implements RestModifyView<ProjectResource, Input>, UiAction<ProjectResource> {
public static class Input {
public boolean showProgress;
public boolean aggressive;
public boolean async;
}
private final boolean canGC;
private final GarbageCollection.Factory garbageCollectionFactory;
private final WorkQueue workQueue;
private final Provider<String> canonicalUrl;
@Inject
GarbageCollect(
GitRepositoryManager repoManager,
GarbageCollection.Factory garbageCollectionFactory,
WorkQueue workQueue,
@CanonicalWebUrl Provider<String> canonicalUrl) {
this.workQueue = workQueue;
this.canonicalUrl = canonicalUrl;
this.canGC = repoManager instanceof LocalDiskRepositoryManager;
this.garbageCollectionFactory = garbageCollectionFactory;
}
@Override
public Object apply(ProjectResource rsrc, Input input) {
Project.NameKey project = rsrc.getNameKey();
if (input.async) {
return applyAsync(project, input);
}
return applySync(project, input);
}
private Response.Accepted applyAsync(Project.NameKey project, Input input) {
Runnable job =
new Runnable() {
@Override
public void run() {
runGC(project, input, null);
}
@Override
public String toString() {
return "Run "
+ (input.aggressive ? "aggressive " : "")
+ "garbage collection on project "
+ project.get();
}
};
@SuppressWarnings("unchecked")
WorkQueue.Task<Void> task = (WorkQueue.Task<Void>) workQueue.getDefaultQueue().submit(job);
String location =
canonicalUrl.get() + "a/config/server/tasks/" + HexFormat.fromInt(task.getTaskId());
return Response.accepted(location);
}
@SuppressWarnings("resource")
private BinaryResult applySync(Project.NameKey project, Input input) {
return new BinaryResult() {
@Override
public void writeTo(OutputStream out) throws IOException {
PrintWriter writer =
new PrintWriter(new OutputStreamWriter(out, UTF_8)) {
@Override
public void println() {
write('\n');
}
};
try {
PrintWriter progressWriter = input.showProgress ? writer : null;
GarbageCollectionResult result = runGC(project, input, progressWriter);
String msg = "Garbage collection completed successfully.";
if (result.hasErrors()) {
for (GarbageCollectionResult.Error e : result.getErrors()) {
switch (e.getType()) {
case REPOSITORY_NOT_FOUND:
msg = "Error: project \"" + e.getProjectName() + "\" not found.";
break;
case GC_ALREADY_SCHEDULED:
msg =
"Error: garbage collection for project \""
+ e.getProjectName()
+ "\" was already scheduled.";
break;
case GC_FAILED:
msg =
"Error: garbage collection for project \""
+ e.getProjectName()
+ "\" failed.";
break;
default:
msg =
"Error: garbage collection for project \""
+ e.getProjectName()
+ "\" failed: "
+ e.getType()
+ ".";
}
}
}
writer.println(msg);
} finally {
writer.flush();
}
}
}.setContentType("text/plain").setCharacterEncoding(UTF_8).disableGzip();
}
GarbageCollectionResult runGC(Project.NameKey project, Input input, PrintWriter progressWriter) {
return garbageCollectionFactory
.create()
.run(Collections.singletonList(project), input.aggressive, progressWriter);
}
@Override
public UiAction.Description getDescription(ProjectResource rsrc) {
return new UiAction.Description()
.setLabel("Run GC")
.setTitle("Triggers the Git Garbage Collection for this project.")
.setVisible(canGC);
}
}
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