| // Copyright (C) 2018 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.googlesource.gerrit.plugins.multisite.forwarder; |
| |
| import com.google.gerrit.reviewdb.client.AccountGroup; |
| import com.google.gerrit.server.index.group.GroupIndexer; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import com.googlesource.gerrit.plugins.multisite.Configuration; |
| import com.googlesource.gerrit.plugins.multisite.forwarder.events.GroupIndexEvent; |
| import com.googlesource.gerrit.plugins.multisite.index.ForwardedIndexExecutor; |
| import com.googlesource.gerrit.plugins.multisite.index.GroupChecker; |
| import java.io.IOException; |
| import java.util.Optional; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Index a group using {@link GroupIndexer}. This class is meant to be used on the receiving side of |
| * the {@link IndexEventForwarder} since it will prevent indexed group to be forwarded again causing |
| * an infinite forwarding loop between the 2 nodes. It will also make sure no concurrent indexing is |
| * done for the same group uuid |
| */ |
| @Singleton |
| public class ForwardedIndexGroupHandler extends ForwardedIndexingHandler<String, GroupIndexEvent> { |
| private final GroupIndexer indexer; |
| private final GroupChecker groupChecker; |
| private final ScheduledExecutorService indexExecutor; |
| private final int retryInterval; |
| private final int maxTries; |
| |
| @Inject |
| ForwardedIndexGroupHandler( |
| GroupIndexer indexer, |
| Configuration config, |
| GroupChecker groupChecker, |
| @ForwardedIndexExecutor ScheduledExecutorService indexExecutor) { |
| super(config.index().numStripedLocks()); |
| this.indexer = indexer; |
| this.groupChecker = groupChecker; |
| this.indexExecutor = indexExecutor; |
| Configuration.Index indexConfig = config.index(); |
| this.retryInterval = indexConfig != null ? indexConfig.retryInterval() : 0; |
| this.maxTries = indexConfig != null ? indexConfig.maxTries() : 0; |
| } |
| |
| @Override |
| protected void doIndex(String uuid, Optional<GroupIndexEvent> event) |
| throws IOException, OrmException { |
| doIndex(uuid, event, 0); |
| } |
| |
| protected void doIndex(String uuid, Optional<GroupIndexEvent> groupIndexEvent, int retryCount) |
| throws IOException { |
| indexer.index(new AccountGroup.UUID(uuid)); |
| if (groupChecker.isGroupUpToDate(groupIndexEvent)) { |
| if (retryCount > 0) { |
| log.warn("Group '{}' has been eventually indexed after {} attempt(s)", uuid, retryCount); |
| } else { |
| log.debug("Group '{}' successfully indexed", uuid); |
| } |
| } else { |
| log.debug("Group '{}' rescheduling indexing", uuid); |
| rescheduleIndex(uuid, groupIndexEvent, retryCount + 1); |
| } |
| } |
| |
| private boolean rescheduleIndex( |
| String uuid, Optional<GroupIndexEvent> indexEvent, int retryCount) { |
| if (retryCount > maxTries) { |
| log.error( |
| "Group '{}' could not be indexed after {} retries. Group index could be stale.", |
| uuid, |
| retryCount); |
| return false; |
| } |
| |
| log.warn( |
| "Retrying for the #{} time to index Group {} after {} msecs", |
| retryCount, |
| uuid, |
| retryInterval); |
| @SuppressWarnings("unused") |
| Future<?> possiblyIgnoredError = |
| indexExecutor.schedule( |
| () -> { |
| try { |
| Context.setForwardedEvent(true); |
| doIndex(uuid, indexEvent, retryCount); |
| } catch (Exception e) { |
| log.warn("Group {} could not be indexed", uuid, e); |
| } |
| }, |
| retryInterval, |
| TimeUnit.MILLISECONDS); |
| return true; |
| } |
| |
| @Override |
| protected void doDelete(String uuid, Optional<GroupIndexEvent> event) { |
| throw new UnsupportedOperationException("Delete from group index not supported"); |
| } |
| } |