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Framework for Gerrit's acceptance tests

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// Copyright (C) 2019 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.acceptance;

import com.google.gerrit.entities.GroupReference;
import com.google.gerrit.extensions.events.LifecycleListener;
import com.google.gerrit.lifecycle.LifecycleModule;
import com.google.gerrit.server.config.GerritServerConfig;
import com.google.gerrit.server.group.db.Groups;
import com.google.gerrit.server.index.group.GroupIndexer;
import com.google.gerrit.server.util.ReplicaUtil;
import com.google.inject.Inject;
import com.google.inject.Scopes;
import java.io.IOException;
import java.util.stream.Stream;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.lib.Config;

/** Reindex all groups at Gerrit daemon startup. */
public class ReindexGroupsAtStartup implements LifecycleListener {
  private final GroupIndexer groupIndexer;
  private final Groups groups;
  private final Config cfg;

  public static class ReindexGroupsAtStartupModule extends LifecycleModule {
    @Override
    protected void configure() {
      listener().to(ReindexGroupsAtStartup.class).in(Scopes.SINGLETON);
    }
  }

  @Inject
  public ReindexGroupsAtStartup(
      GroupIndexer groupIndexer, Groups groups, @GerritServerConfig Config cfg) {
    this.groupIndexer = groupIndexer;
    this.groups = groups;
    this.cfg = cfg;
  }

  @Override
  public void start() {
    // Gerrit replicas without a reindex
    if (ReplicaUtil.isReplica(cfg)
        && !cfg.getBoolean("index", "scheduledIndexer", "runOnStartup", true)) {
      return;
    }

    Stream allGroupReferences;
    try {
      allGroupReferences = groups.getAllGroupReferences();
    } catch (ConfigInvalidException | IOException e) {
      throw new IllegalStateException("Unable to reindex groups, tests may fail", e);
    }

    allGroupReferences.forEach(group -> groupIndexer.index(group.getUUID()));
  }

  @Override
  public void stop() {}
}