001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *      http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.oozie.executor.jpa;
019
020import java.sql.Timestamp;
021
022import javax.persistence.EntityManager;
023import javax.persistence.Query;
024
025import org.apache.oozie.ErrorCode;
026
027/**
028 * Count the number of Workflow children of a parent Coordinator that are not ready to be purged
029 */
030public class WorkflowJobsCountNotForPurgeFromCoordParentIdJPAExecutor implements JPAExecutor<Long> {
031
032    private static final long DAY_IN_MS = 24 * 60 * 60 * 1000;
033    private long olderThanDays;
034    private String parentId;
035
036    public WorkflowJobsCountNotForPurgeFromCoordParentIdJPAExecutor(long olderThanDays, String parentId) {
037        this.olderThanDays = olderThanDays;
038        this.parentId = parentId;
039    }
040
041    @Override
042    public String getName() {
043        return "WorkflowJobsCountNotForPurgeFromCoordParentIdJPAExecutor";
044    }
045
046    @Override
047    @SuppressWarnings("unchecked")
048    public Long execute(EntityManager em) throws JPAExecutorException {
049        Long count = 0L;
050        try {
051            Timestamp maxEndTime = new Timestamp(System.currentTimeMillis() - (olderThanDays * DAY_IN_MS));
052            Query jobQ = em.createNamedQuery("GET_WORKFLOWS_COUNT_WITH_COORD_PARENT_ID_NOT_READY_FOR_PURGE");
053            jobQ.setParameter("parentId", parentId + "%");  // The '%' is the wildcard
054            jobQ.setParameter("endTime", maxEndTime);
055            count = (Long) jobQ.getSingleResult();
056        }
057        catch (Exception e) {
058            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
059        }
060        return count;
061    }
062
063}