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// Copyright (C) 2017 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.index.project;
import com.google.common.collect.ImmutableSet;
import com.google.common.flogger.FluentLogger;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.entities.Project;
import com.google.gerrit.exceptions.StorageException;
import com.google.gerrit.extensions.events.ProjectIndexedListener;
import com.google.gerrit.index.project.ProjectData;
import com.google.gerrit.index.project.ProjectIndex;
import com.google.gerrit.index.project.ProjectIndexCollection;
import com.google.gerrit.index.project.ProjectIndexer;
import com.google.gerrit.server.logging.Metadata;
import com.google.gerrit.server.logging.TraceContext;
import com.google.gerrit.server.logging.TraceContext.TraceTimer;
import com.google.gerrit.server.plugincontext.PluginSetContext;
import com.google.gerrit.server.project.ProjectCache;
import com.google.gerrit.server.project.ProjectState;
import com.google.inject.assistedinject.Assisted;
import com.google.inject.assistedinject.AssistedInject;
import java.util.Collection;
import java.util.Collections;
import java.util.Optional;
/**
* Implementation for indexing a Gerrit-managed repository (project). The project will be loaded
* from {@link ProjectCache}.
*/
public class ProjectIndexerImpl implements ProjectIndexer {
private static final FluentLogger logger = FluentLogger.forEnclosingClass();
public interface Factory {
ProjectIndexerImpl create(ProjectIndexCollection indexes);
ProjectIndexerImpl create(@Nullable ProjectIndex index);
}
private final ProjectCache projectCache;
private final PluginSetContext<ProjectIndexedListener> indexedListener;
@Nullable private final ProjectIndexCollection indexes;
@Nullable private final ProjectIndex index;
@AssistedInject
ProjectIndexerImpl(
ProjectCache projectCache,
PluginSetContext<ProjectIndexedListener> indexedListener,
@Assisted ProjectIndexCollection indexes) {
this.projectCache = projectCache;
this.indexedListener = indexedListener;
this.indexes = indexes;
this.index = null;
}
@AssistedInject
ProjectIndexerImpl(
ProjectCache projectCache,
PluginSetContext<ProjectIndexedListener> indexedListener,
@Assisted @Nullable ProjectIndex index) {
this.projectCache = projectCache;
this.indexedListener = indexedListener;
this.indexes = null;
this.index = index;
}
@Override
public void index(Project.NameKey nameKey) {
Optional<ProjectState> projectState = projectCache.get(nameKey);
if (projectState.isPresent()) {
logger.atFine().log("Replace project %s in index", nameKey.get());
ProjectData projectData = projectState.get().toProjectData();
for (ProjectIndex i : getWriteIndexes()) {
try (TraceTimer traceTimer =
TraceContext.newTimer(
"Replacing project",
Metadata.builder()
.projectName(nameKey.get())
.indexVersion(i.getSchema().getVersion())
.build())) {
i.replace(projectData);
} catch (RuntimeException e) {
throw new StorageException(
String.format(
"Failed to replace project %s in index version %d",
nameKey.get(), i.getSchema().getVersion()),
e);
}
}
fireProjectIndexedEvent(nameKey.get());
} else {
logger.atFine().log("Delete project %s from index", nameKey.get());
for (ProjectIndex i : getWriteIndexes()) {
try (TraceTimer traceTimer =
TraceContext.newTimer(
"Deleting project",
Metadata.builder()
.projectName(nameKey.get())
.indexVersion(i.getSchema().getVersion())
.build())) {
i.delete(nameKey);
} catch (RuntimeException e) {
throw new StorageException(
String.format(
"Failed to delete project %s from index version %d",
nameKey.get(), i.getSchema().getVersion()),
e);
}
}
}
}
private void fireProjectIndexedEvent(String name) {
indexedListener.runEach(l -> l.onProjectIndexed(name));
}
private Collection<ProjectIndex> getWriteIndexes() {
if (indexes != null) {
return indexes.getWriteIndexes();
}
return index != null ? Collections.singleton(index) : ImmutableSet.of();
}
}