org.sonar.db.ce.CeQueueDao.java Source code

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Here is the source code for org.sonar.db.ce.CeQueueDao.java

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/*
 * SonarQube
 * Copyright (C) 2009-2016 SonarSource SA
 * mailto:contact 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.db.ce;

import com.google.common.base.Optional;
import java.util.List;
import org.apache.ibatis.session.RowBounds;
import org.sonar.api.utils.Paging;
import org.sonar.api.utils.System2;
import org.sonar.db.Dao;
import org.sonar.db.DbSession;

import static java.util.Collections.emptyList;
import static org.sonar.db.ce.CeQueueDto.Status.IN_PROGRESS;
import static org.sonar.db.ce.CeQueueDto.Status.PENDING;

public class CeQueueDao implements Dao {

    private final System2 system2;

    public CeQueueDao(System2 system2) {
        this.system2 = system2;
    }

    /**
     * Ordered by ascending id: oldest to newest
     */
    public List<CeQueueDto> selectAllInAscOrder(DbSession session) {
        return mapper(session).selectAllInAscOrder();
    }

    public List<CeQueueDto> selectByQueryInDescOrder(DbSession dbSession, CeTaskQuery query, Paging paging) {
        if (query.isShortCircuitedByComponentUuids() || query.isOnlyCurrents()
                || query.getMaxExecutedAt() != null) {
            return emptyList();
        }

        return mapper(dbSession).selectByQueryInDescOrder(query, new RowBounds(paging.offset(), paging.pageSize()));
    }

    public int countByQuery(DbSession dbSession, CeTaskQuery query) {
        if (query.isShortCircuitedByComponentUuids() || query.isOnlyCurrents()
                || query.getMaxExecutedAt() != null) {
            return 0;
        }

        return mapper(dbSession).countByQuery(query);
    }

    /**
     * Ordered by ascending id: oldest to newest
     */
    public List<CeQueueDto> selectByComponentUuid(DbSession session, String componentUuid) {
        return mapper(session).selectByComponentUuid(componentUuid);
    }

    public Optional<CeQueueDto> selectByUuid(DbSession session, String uuid) {
        return Optional.fromNullable(mapper(session).selectByUuid(uuid));
    }

    public CeQueueDto insert(DbSession session, CeQueueDto dto) {
        if (dto.getCreatedAt() == 0L || dto.getUpdatedAt() == 0L) {
            dto.setCreatedAt(system2.now());
            dto.setUpdatedAt(system2.now());
        }

        mapper(session).insert(dto);
        return dto;
    }

    public void deleteByUuid(DbSession session, String uuid) {
        mapper(session).deleteByUuid(uuid);
    }

    /**
     * Update all rows with: STATUS='PENDING', STARTED_AT=NULL, UPDATED_AT={now}
     */
    public void resetAllToPendingStatus(DbSession session) {
        mapper(session).resetAllToPendingStatus(system2.now());
    }

    public int countByStatus(DbSession dbSession, CeQueueDto.Status status) {
        return mapper(dbSession).countByStatus(status);
    }

    public int countAll(DbSession dbSession) {
        return mapper(dbSession).countAll();
    }

    public Optional<CeQueueDto> peek(DbSession session) {
        List<String> taskUuids = mapper(session).selectEligibleForPeek();
        if (taskUuids.isEmpty()) {
            return Optional.absent();
        }

        String taskUuid = taskUuids.get(0);
        return tryToPeek(session, taskUuid);
    }

    private Optional<CeQueueDto> tryToPeek(DbSession session, String taskUuid) {
        int touchedRows = mapper(session).updateIfStatus(taskUuid, IN_PROGRESS, system2.now(), system2.now(),
                PENDING);
        if (touchedRows != 1) {
            return Optional.absent();
        }

        CeQueueDto result = mapper(session).selectByUuid(taskUuid);
        session.commit();
        return Optional.of(result);
    }

    private static CeQueueMapper mapper(DbSession session) {
        return session.getMapper(CeQueueMapper.class);
    }
}