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/*
 * SonarQube
 * Copyright (C) 2009-2017 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.server.platform;

import java.util.Date;
import org.sonar.api.CoreProperties;
import org.sonar.api.Startable;
import org.sonar.api.server.ServerSide;
import org.sonar.api.utils.DateUtils;
import org.sonar.db.DbClient;
import org.sonar.db.property.PropertyDto;

/**
 * The server node marked as "startup leader" generates some information about startup. These
 * information are loaded by "startup follower" servers and all Compute Engine nodes.
 *
 * @see StartupMetadataProvider#load(DbClient)
 */
@ServerSide
public class StartupMetadataPersister implements Startable {

  private final StartupMetadata metadata;
  // PersistentSettings can not be used as it has to be
  // instantiated in level 4 of container, whereas
  // StartupMetadataPersister is level 3.
  private final DbClient dbClient;

  public StartupMetadataPersister(StartupMetadata metadata, DbClient dbClient) {
    this.metadata = metadata;
    this.dbClient = dbClient;
  }

  @Override
  public void start() {
    String startedAt = DateUtils.formatDateTime(new Date(metadata.getStartedAt()));
    save(CoreProperties.SERVER_STARTTIME, startedAt);
  }

  private void save(String key, String value) {
    dbClient.propertiesDao().saveProperty(new PropertyDto().setKey(key).setValue(value));
  }

  @Override
  public void stop() {
    // nothing to do
  }
}