| // 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.index; |
| |
| import com.google.common.util.concurrent.Atomics; |
| import com.google.common.util.concurrent.ListeningExecutorService; |
| import com.google.gerrit.reviewdb.server.ReviewDb; |
| import com.google.gerrit.server.CurrentUser; |
| import com.google.gerrit.server.query.change.ChangeData; |
| import com.google.gerrit.server.util.RequestContext; |
| import com.google.gerrit.server.util.ThreadLocalRequestContext; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.gwtorm.server.SchemaFactory; |
| import com.google.inject.OutOfScopeException; |
| import com.google.inject.Provider; |
| import com.google.inject.ProvisionException; |
| import com.google.inject.assistedinject.Assisted; |
| import com.google.inject.assistedinject.AssistedInject; |
| import com.google.inject.util.Providers; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| /** |
| * Helper for (re)indexing a change document. |
| * <p> |
| * Indexing is run in the background, as it may require substantial work to |
| * compute some of the fields and/or update the index. |
| */ |
| public class ChangeIndexerImpl extends ChangeIndexer { |
| private static final Logger log = |
| LoggerFactory.getLogger(ChangeIndexerImpl.class); |
| |
| private final IndexCollection indexes; |
| private final ChangeIndex index; |
| private final SchemaFactory<ReviewDb> schemaFactory; |
| private final ThreadLocalRequestContext context; |
| |
| @AssistedInject |
| ChangeIndexerImpl(@IndexExecutor ListeningExecutorService executor, |
| SchemaFactory<ReviewDb> schemaFactory, |
| ThreadLocalRequestContext context, |
| @Assisted ChangeIndex index) { |
| super(executor); |
| this.schemaFactory = schemaFactory; |
| this.context = context; |
| this.index = index; |
| this.indexes = null; |
| } |
| |
| @AssistedInject |
| ChangeIndexerImpl(@IndexExecutor ListeningExecutorService executor, |
| SchemaFactory<ReviewDb> schemaFactory, |
| ThreadLocalRequestContext context, |
| @Assisted IndexCollection indexes) { |
| super(executor); |
| this.schemaFactory = schemaFactory; |
| this.context = context; |
| this.index = null; |
| this.indexes = indexes; |
| } |
| |
| @Override |
| protected Callable<Void> indexTask(ChangeData cd) { |
| return new Task(cd, false); |
| } |
| |
| @Override |
| protected Callable<Void> deleteTask(ChangeData cd) { |
| return new Task(cd, true); |
| } |
| |
| private class Task implements Callable<Void> { |
| private final ChangeData cd; |
| private final boolean delete; |
| |
| private Task(ChangeData cd, boolean delete) { |
| this.cd = cd; |
| this.delete = delete; |
| } |
| |
| @Override |
| public Void call() throws Exception { |
| try { |
| final AtomicReference<Provider<ReviewDb>> dbRef = |
| Atomics.newReference(); |
| RequestContext oldCtx = context.setContext(new RequestContext() { |
| @Override |
| public Provider<ReviewDb> getReviewDbProvider() { |
| Provider<ReviewDb> db = dbRef.get(); |
| if (db == null) { |
| try { |
| db = Providers.of(schemaFactory.open()); |
| } catch (OrmException e) { |
| ProvisionException pe = |
| new ProvisionException("error opening ReviewDb"); |
| pe.initCause(e); |
| throw pe; |
| } |
| dbRef.set(db); |
| } |
| return db; |
| } |
| |
| @Override |
| public CurrentUser getCurrentUser() { |
| throw new OutOfScopeException("No user during ChangeIndexer"); |
| } |
| }); |
| try { |
| if (indexes != null) { |
| for (ChangeIndex i : indexes.getWriteIndexes()) { |
| apply(i, cd); |
| } |
| } else { |
| apply(index, cd); |
| } |
| return null; |
| } finally { |
| context.setContext(oldCtx); |
| Provider<ReviewDb> db = dbRef.get(); |
| if (db != null) { |
| db.get().close(); |
| } |
| } |
| } catch (Exception e) { |
| log.error(String.format( |
| "Failed to index change %d in %s", |
| cd.getId().get(), cd.getChange().getProject().get()), e); |
| throw e; |
| } |
| } |
| |
| private void apply(ChangeIndex i, ChangeData cd) throws IOException { |
| if (delete) { |
| i.delete(cd); |
| } else { |
| i.replace(cd); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return "index-change-" + cd.getId().get(); |
| } |
| } |
| } |