sonarqube/server/sonar-server/src/main/java/org/sonar/server/computation/task/projectanalysis/component/MergeBranchComponentUuids.java

/*
 * SonarQube
 * Copyright (C) 2009-2018 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.computation.task.projectanalysis.component;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import javax.annotation.CheckForNull;
import org.sonar.db.DbClient;
import org.sonar.db.DbSession;
import org.sonar.db.component.BranchDto;
import org.sonar.db.component.ComponentDto;
import org.sonar.server.computation.task.projectanalysis.analysis.AnalysisMetadataHolder;

import static com.google.common.base.Preconditions.checkState;
import static org.sonar.db.component.ComponentDto.removeBranchAndPullRequestFromKey;

/**
 * Cache a map between component keys and uuids in the merge branch
 */
public class MergeBranchComponentUuids {
  private final AnalysisMetadataHolder analysisMetadataHolder;
  private final DbClient dbClient;
  private Map<String, String> uuidsByKey;
  private String mergeBranchName;

  public MergeBranchComponentUuids(AnalysisMetadataHolder analysisMetadataHolder, DbClient dbClient) {
    this.analysisMetadataHolder = analysisMetadataHolder;
    this.dbClient = dbClient;
  }

  private void lazyInit() {
    if (uuidsByKey == null) {
      String mergeBranchUuid = analysisMetadataHolder.getBranch().getMergeBranchUuid().get();

      uuidsByKey = new HashMap<>();
      try (DbSession dbSession = dbClient.openSession(false)) {

        List<ComponentDto> components = dbClient.componentDao().selectByProjectUuid(mergeBranchUuid, dbSession);
        for (ComponentDto dto : components) {
          uuidsByKey.put(dto.getKey(), dto.uuid());
        }

        Optional<BranchDto> opt = dbClient.branchDao().selectByUuid(dbSession, mergeBranchUuid);
        checkState(opt.isPresent(), "Merge branch '%s' does not exist", mergeBranchUuid);
        mergeBranchName = opt.get().getKey();
      }
    }
  }

  public String getMergeBranchName() {
    lazyInit();
    return mergeBranchName;
  }

  @CheckForNull
  public String getUuid(String dbKey) {
    lazyInit();
    String cleanComponentKey = removeBranchAndPullRequestFromKey(dbKey);
    return uuidsByKey.get(cleanComponentKey);
  }
}