| // Copyright (C) 2016 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.account; |
| |
| import static com.google.gerrit.server.git.QueueProvider.QueueType.BATCH; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.util.concurrent.Futures; |
| import com.google.common.util.concurrent.ListeningExecutorService; |
| import com.google.gerrit.common.Nullable; |
| import com.google.gerrit.extensions.events.AccountIndexedListener; |
| import com.google.gerrit.extensions.registration.DynamicSet; |
| import com.google.gerrit.index.Index; |
| import com.google.gerrit.reviewdb.client.Account; |
| import com.google.gerrit.server.account.AccountCache; |
| import com.google.gerrit.server.account.AccountState; |
| import com.google.gerrit.server.config.GerritServerConfig; |
| import com.google.gerrit.server.index.IndexExecutor; |
| import com.google.gerrit.server.index.IndexUtils; |
| import com.google.inject.assistedinject.Assisted; |
| import com.google.inject.assistedinject.AssistedInject; |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.Future; |
| import org.eclipse.jgit.lib.Config; |
| |
| public class AccountIndexerImpl implements AccountIndexer { |
| public interface Factory { |
| AccountIndexerImpl create(AccountIndexCollection indexes); |
| |
| AccountIndexerImpl create(@Nullable AccountIndex index); |
| } |
| |
| private final AccountCache byIdCache; |
| private final DynamicSet<AccountIndexedListener> indexedListener; |
| private final StalenessChecker stalenessChecker; |
| private final ListeningExecutorService batchExecutor; |
| private final boolean autoReindexIfStale; |
| @Nullable private final AccountIndexCollection indexes; |
| @Nullable private final AccountIndex index; |
| |
| @AssistedInject |
| AccountIndexerImpl( |
| AccountCache byIdCache, |
| DynamicSet<AccountIndexedListener> indexedListener, |
| StalenessChecker stalenessChecker, |
| @IndexExecutor(BATCH) ListeningExecutorService batchExecutor, |
| @GerritServerConfig Config config, |
| @Assisted AccountIndexCollection indexes) { |
| this.byIdCache = byIdCache; |
| this.indexedListener = indexedListener; |
| this.stalenessChecker = stalenessChecker; |
| this.batchExecutor = batchExecutor; |
| this.autoReindexIfStale = autoReindexIfStale(config); |
| this.indexes = indexes; |
| this.index = null; |
| } |
| |
| @AssistedInject |
| AccountIndexerImpl( |
| AccountCache byIdCache, |
| DynamicSet<AccountIndexedListener> indexedListener, |
| StalenessChecker stalenessChecker, |
| @IndexExecutor(BATCH) ListeningExecutorService batchExecutor, |
| @GerritServerConfig Config config, |
| @Assisted @Nullable AccountIndex index) { |
| this.byIdCache = byIdCache; |
| this.indexedListener = indexedListener; |
| this.stalenessChecker = stalenessChecker; |
| this.batchExecutor = batchExecutor; |
| this.autoReindexIfStale = autoReindexIfStale(config); |
| this.indexes = null; |
| this.index = index; |
| } |
| |
| @Override |
| public void index(Account.Id id) throws IOException { |
| for (Index<Account.Id, AccountState> i : getWriteIndexes()) { |
| AccountState accountState = byIdCache.getOrNull(id); |
| if (accountState != null) { |
| i.replace(accountState); |
| } else { |
| i.delete(id); |
| } |
| } |
| fireAccountIndexedEvent(id.get()); |
| autoReindexIfStale(id); |
| } |
| |
| private static boolean autoReindexIfStale(Config cfg) { |
| return cfg.getBoolean("index", null, "autoReindexIfStale", true); |
| } |
| |
| private void autoReindexIfStale(Account.Id id) { |
| if (autoReindexIfStale) { |
| // Don't retry indefinitely; if this fails the account will be stale. |
| @SuppressWarnings("unused") |
| Future<?> possiblyIgnoredError = reindexIfStale(id); |
| } |
| } |
| |
| /** |
| * Asynchronously check if a account is stale, and reindex if it is. |
| * |
| * <p>Always run on the batch executor, even if this indexer instance is configured to use a |
| * different executor. |
| * |
| * @param id the ID of the account. |
| * @return future for reindexing the account; returns true if the account was stale. |
| */ |
| @SuppressWarnings("deprecation") |
| public com.google.common.util.concurrent.CheckedFuture<Boolean, IOException> reindexIfStale( |
| Account.Id id) { |
| Callable<Boolean> task = |
| () -> { |
| if (stalenessChecker.isStale(id)) { |
| index(id); |
| return true; |
| } |
| return false; |
| }; |
| |
| return Futures.makeChecked( |
| Futures.nonCancellationPropagating(batchExecutor.submit(task)), IndexUtils.MAPPER); |
| } |
| |
| private void fireAccountIndexedEvent(int id) { |
| for (AccountIndexedListener listener : indexedListener) { |
| listener.onAccountIndexed(id); |
| } |
| } |
| |
| private Collection<AccountIndex> getWriteIndexes() { |
| if (indexes != null) { |
| return indexes.getWriteIndexes(); |
| } |
| |
| return index != null ? Collections.singleton(index) : ImmutableSet.<AccountIndex>of(); |
| } |
| } |