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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.pgm;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.gerrit.server.schema.DataSourceProvider.Context.MULTI_USER;
import static java.util.stream.Collectors.toSet;
import com.google.common.collect.Sets;
import com.google.gerrit.common.Die;
import com.google.gerrit.elasticsearch.ElasticIndexModule;
import com.google.gerrit.extensions.config.FactoryModule;
import com.google.gerrit.index.Index;
import com.google.gerrit.index.IndexDefinition;
import com.google.gerrit.index.SiteIndexer;
import com.google.gerrit.lifecycle.LifecycleManager;
import com.google.gerrit.lucene.LuceneIndexModule;
import com.google.gerrit.pgm.util.BatchProgramModule;
import com.google.gerrit.pgm.util.SiteProgram;
import com.google.gerrit.pgm.util.ThreadLimiter;
import com.google.gerrit.server.change.ChangeResource;
import com.google.gerrit.server.config.GerritServerConfig;
import com.google.gerrit.server.index.IndexModule;
import com.google.gerrit.server.index.IndexModule.IndexType;
import com.google.gerrit.server.index.change.ChangeSchemaDefinitions;
import com.google.inject.Inject;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.Module;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import java.util.concurrent.TimeUnit;
import org.eclipse.jgit.lib.Config;
import org.eclipse.jgit.util.io.NullOutputStream;
import org.kohsuke.args4j.Option;
public class Reindex extends SiteProgram {
@Option(name = "--threads", usage = "Number of threads to use for indexing")
private int threads = Runtime.getRuntime().availableProcessors();
@Option(
name = "--changes-schema-version",
usage = "Schema version to reindex, for changes; default is most recent version")
private Integer changesVersion;
@Option(name = "--verbose", usage = "Output debug information for each change")
private boolean verbose;
@Option(name = "--list", usage = "List supported indices and exit")
private boolean list;
@Option(name = "--index", usage = "Only reindex specified indices")
private List<String> indices = new ArrayList<>();
private Injector dbInjector;
private Injector sysInjector;
private Config globalConfig;
@Inject private Collection<IndexDefinition<?, ?, ?>> indexDefs;
@Override
public int run() throws Exception {
mustHaveValidSite();
dbInjector = createDbInjector(MULTI_USER);
globalConfig = dbInjector.getInstance(Key.get(Config.class, GerritServerConfig.class));
threads = ThreadLimiter.limitThreads(dbInjector, threads);
checkNotSlaveMode();
overrideConfig();
LifecycleManager dbManager = new LifecycleManager();
dbManager.add(dbInjector);
dbManager.start();
sysInjector = createSysInjector();
LifecycleManager sysManager = new LifecycleManager();
sysManager.add(sysInjector);
sysManager.start();
sysInjector.injectMembers(this);
checkIndicesOption();
try {
boolean ok = list ? list() : reindex();
return ok ? 0 : 1;
} catch (Exception e) {
throw die(e.getMessage(), e);
} finally {
sysManager.stop();
dbManager.stop();
}
}
private boolean list() {
for (IndexDefinition<?, ?, ?> def : indexDefs) {
System.out.format("%s\n", def.getName());
}
return true;
}
private boolean reindex() throws IOException {
boolean ok = true;
for (IndexDefinition<?, ?, ?> def : indexDefs) {
if (indices.isEmpty() || indices.contains(def.getName())) {
ok &= reindex(def);
}
}
return ok;
}
private void checkIndicesOption() throws Die {
if (indices.isEmpty()) {
return;
}
checkNotNull(indexDefs, "Called this method before injectMembers?");
Set<String> valid = indexDefs.stream().map(IndexDefinition::getName).sorted().collect(toSet());
Set<String> invalid = Sets.difference(Sets.newHashSet(indices), valid);
if (invalid.isEmpty()) {
return;
}
throw die(
"invalid index name(s): " + new TreeSet<>(invalid) + " available indices are: " + valid);
}
private void checkNotSlaveMode() throws Die {
if (globalConfig.getBoolean("container", "slave", false)) {
throw die("Cannot run reindex in slave mode");
}
}
private Injector createSysInjector() {
Map<String, Integer> versions = new HashMap<>();
if (changesVersion != null) {
versions.put(ChangeSchemaDefinitions.INSTANCE.getName(), changesVersion);
}
List<Module> modules = new ArrayList<>();
Module indexModule;
switch (IndexModule.getIndexType(dbInjector)) {
case LUCENE:
indexModule = LuceneIndexModule.singleVersionWithExplicitVersions(versions, threads);
break;
case ELASTICSEARCH:
indexModule = ElasticIndexModule.singleVersionWithExplicitVersions(versions, threads);
break;
default:
throw new IllegalStateException("unsupported index.type");
}
modules.add(indexModule);
modules.add(dbInjector.getInstance(BatchProgramModule.class));
modules.add(
new FactoryModule() {
@Override
protected void configure() {
factory(ChangeResource.Factory.class);
}
});
return dbInjector.createChildInjector(modules);
}
private void overrideConfig() {
// Disable auto-commit for speed; committing will happen at the end of the process.
if (IndexModule.getIndexType(dbInjector) == IndexType.LUCENE) {
globalConfig.setLong("index", "changes_open", "commitWithin", -1);
globalConfig.setLong("index", "changes_closed", "commitWithin", -1);
}
// Disable change cache.
globalConfig.setLong("cache", "changes", "maximumWeight", 0);
// Disable auto-reindexing if stale, since there are no concurrent writes to race with.
globalConfig.setBoolean("index", null, "autoReindexIfStale", false);
}
private <K, V, I extends Index<K, V>> boolean reindex(IndexDefinition<K, V, I> def)
throws IOException {
I index = def.getIndexCollection().getSearchIndex();
checkNotNull(index, "no active search index configured for %s", def.getName());
index.markReady(false);
index.deleteAll();
SiteIndexer<K, V, I> siteIndexer = def.getSiteIndexer();
siteIndexer.setProgressOut(System.err);
siteIndexer.setVerboseOut(verbose ? System.out : NullOutputStream.INSTANCE);
SiteIndexer.Result result = siteIndexer.indexAll(index);
int n = result.doneCount() + result.failedCount();
double t = result.elapsed(TimeUnit.MILLISECONDS) / 1000d;
System.out.format(
"Reindexed %d documents in %s index in %.01fs (%.01f/s)\n", n, def.getName(), t, n / t);
if (result.success()) {
index.markReady(true);
}
return result.success();
}
}
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