com.google.gerrit.server.index.group.AllGroupsIndexer.java Source code

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Here is the source code for com.google.gerrit.server.index.group.AllGroupsIndexer.java

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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.group;

import static com.google.gerrit.server.git.QueueProvider.QueueType.BATCH;

import com.google.common.base.Stopwatch;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.gerrit.reviewdb.client.AccountGroup;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.account.GroupCache;
import com.google.gerrit.server.index.IndexExecutor;
import com.google.gerrit.server.index.SiteIndexer;
import com.google.gwtorm.server.OrmException;
import com.google.gwtorm.server.SchemaFactory;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import org.eclipse.jgit.lib.ProgressMonitor;
import org.eclipse.jgit.lib.TextProgressMonitor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@Singleton
public class AllGroupsIndexer extends SiteIndexer<AccountGroup.UUID, AccountGroup, GroupIndex> {
    private static final Logger log = LoggerFactory.getLogger(AllGroupsIndexer.class);

    private final SchemaFactory<ReviewDb> schemaFactory;
    private final ListeningExecutorService executor;
    private final GroupCache groupCache;

    @Inject
    AllGroupsIndexer(SchemaFactory<ReviewDb> schemaFactory, @IndexExecutor(BATCH) ListeningExecutorService executor,
            GroupCache groupCache) {
        this.schemaFactory = schemaFactory;
        this.executor = executor;
        this.groupCache = groupCache;
    }

    @Override
    public SiteIndexer.Result indexAll(GroupIndex index) {
        ProgressMonitor progress = new TextProgressMonitor(new PrintWriter(progressOut));
        progress.start(2);
        Stopwatch sw = Stopwatch.createStarted();
        List<AccountGroup.UUID> uuids;
        try {
            uuids = collectGroups(progress);
        } catch (OrmException e) {
            log.error("Error collecting groups", e);
            return new SiteIndexer.Result(sw, false, 0, 0);
        }
        return reindexGroups(index, uuids, progress);
    }

    private SiteIndexer.Result reindexGroups(GroupIndex index, List<AccountGroup.UUID> uuids,
            ProgressMonitor progress) {
        progress.beginTask("Reindexing groups", uuids.size());
        List<ListenableFuture<?>> futures = new ArrayList<>(uuids.size());
        AtomicBoolean ok = new AtomicBoolean(true);
        AtomicInteger done = new AtomicInteger();
        AtomicInteger failed = new AtomicInteger();
        Stopwatch sw = Stopwatch.createStarted();
        for (AccountGroup.UUID uuid : uuids) {
            String desc = "group " + uuid;
            ListenableFuture<?> future = executor.submit(() -> {
                try {
                    AccountGroup oldGroup = groupCache.get(uuid);
                    if (oldGroup != null) {
                        groupCache.evict(oldGroup);
                    }
                    index.replace(groupCache.get(uuid));
                    verboseWriter.println("Reindexed " + desc);
                    done.incrementAndGet();
                } catch (Exception e) {
                    failed.incrementAndGet();
                    throw e;
                }
                return null;
            });
            addErrorListener(future, desc, progress, ok);
            futures.add(future);
        }

        try {
            Futures.successfulAsList(futures).get();
        } catch (ExecutionException | InterruptedException e) {
            log.error("Error waiting on group futures", e);
            return new SiteIndexer.Result(sw, false, 0, 0);
        }

        progress.endTask();
        return new SiteIndexer.Result(sw, ok.get(), done.get(), failed.get());
    }

    private List<AccountGroup.UUID> collectGroups(ProgressMonitor progress) throws OrmException {
        progress.beginTask("Collecting groups", ProgressMonitor.UNKNOWN);
        List<AccountGroup.UUID> uuids = new ArrayList<>();
        try (ReviewDb db = schemaFactory.open()) {
            for (AccountGroup group : db.accountGroups().all()) {
                uuids.add(group.getGroupUUID());
            }
        }
        progress.endTask();
        return uuids;
    }
}