StoragePoolWorkDaoImpl.java

// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License.  Citrix Systems, Inc.
// reserves all rights not expressly granted by 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.
// 
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.storage.dao;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import javax.ejb.Local;

import com.cloud.storage.StoragePoolWorkVO;
import com.cloud.utils.db.DB;
import com.cloud.utils.db.GenericDaoBase;
import com.cloud.utils.db.SearchBuilder;
import com.cloud.utils.db.SearchCriteria;
import com.cloud.utils.db.Transaction;
import com.cloud.utils.exception.CloudRuntimeException;

@Local(value={StoragePoolWorkDao.class}) @DB(txn=false)
public class StoragePoolWorkDaoImpl extends GenericDaoBase<StoragePoolWorkVO, Long>  implements StoragePoolWorkDao {

    protected final SearchBuilder<StoragePoolWorkVO> PendingWorkForPrepareForMaintenanceSearch;
    protected final SearchBuilder<StoragePoolWorkVO> PendingWorkForCancelMaintenanceSearch;
    protected final SearchBuilder<StoragePoolWorkVO> PoolAndVmIdSearch;
    protected final SearchBuilder<StoragePoolWorkVO> PendingJobsForDeadMs;
    
    private final String FindPoolIds = "SELECT distinct storage_pool_work.pool_id FROM storage_pool_work WHERE mgmt_server_id = ?";
    
    protected StoragePoolWorkDaoImpl() {
        PendingWorkForPrepareForMaintenanceSearch = createSearchBuilder();
        PendingWorkForPrepareForMaintenanceSearch.and("poolId", PendingWorkForPrepareForMaintenanceSearch.entity().getPoolId(), SearchCriteria.Op.EQ);
        PendingWorkForPrepareForMaintenanceSearch.and("stoppedForMaintenance", PendingWorkForPrepareForMaintenanceSearch.entity().isStoppedForMaintenance(), SearchCriteria.Op.EQ);
        PendingWorkForPrepareForMaintenanceSearch.and("startedAfterMaintenance", PendingWorkForPrepareForMaintenanceSearch.entity().isStartedAfterMaintenance(), SearchCriteria.Op.EQ);
        PendingWorkForPrepareForMaintenanceSearch.done();
        
        PendingWorkForCancelMaintenanceSearch = createSearchBuilder();
        PendingWorkForCancelMaintenanceSearch.and("poolId", PendingWorkForCancelMaintenanceSearch.entity().getPoolId(), SearchCriteria.Op.EQ);
        PendingWorkForCancelMaintenanceSearch.and("stoppedForMaintenance", PendingWorkForCancelMaintenanceSearch.entity().isStoppedForMaintenance(), SearchCriteria.Op.EQ);
        PendingWorkForCancelMaintenanceSearch.and("startedAfterMaintenance", PendingWorkForCancelMaintenanceSearch.entity().isStartedAfterMaintenance(), SearchCriteria.Op.EQ);
        PendingWorkForCancelMaintenanceSearch.done();

        PoolAndVmIdSearch = createSearchBuilder();
        PoolAndVmIdSearch.and("poolId", PoolAndVmIdSearch.entity().getPoolId(), SearchCriteria.Op.EQ);
        PoolAndVmIdSearch.and("vmId", PoolAndVmIdSearch.entity().getVmId(), SearchCriteria.Op.EQ);
        PoolAndVmIdSearch.done();
        
        PendingJobsForDeadMs = createSearchBuilder();
        PendingJobsForDeadMs.and("managementServerId", PendingJobsForDeadMs.entity().getManagementServerId(), SearchCriteria.Op.EQ);
        PendingJobsForDeadMs.and("poolId", PendingJobsForDeadMs.entity().getPoolId(), SearchCriteria.Op.EQ);
        PendingJobsForDeadMs.and("stoppedForMaintenance", PendingJobsForDeadMs.entity().isStoppedForMaintenance(), SearchCriteria.Op.EQ);
        PendingJobsForDeadMs.and("startedAfterMaintenance", PendingJobsForDeadMs.entity().isStartedAfterMaintenance(), SearchCriteria.Op.EQ);
        PendingJobsForDeadMs.done();
        
    }
    
    @Override
    public List<StoragePoolWorkVO> listPendingWorkForPrepareForMaintenanceByPoolId(long poolId) {
        SearchCriteria<StoragePoolWorkVO> sc = PendingWorkForPrepareForMaintenanceSearch.create();
        sc.setParameters("poolId", poolId);
        sc.setParameters("stoppedForMaintenance", false);
        sc.setParameters("startedAfterMaintenance", false);
        return listBy(sc);
    }
    
    @Override
    public List<StoragePoolWorkVO> listPendingWorkForCancelMaintenanceByPoolId(long poolId) {
        SearchCriteria<StoragePoolWorkVO> sc = PendingWorkForCancelMaintenanceSearch.create();
        sc.setParameters("poolId", poolId);
        sc.setParameters("stoppedForMaintenance", true);
        sc.setParameters("startedAfterMaintenance", false);
        return listBy(sc);
    }
    
    @Override
    public StoragePoolWorkVO findByPoolIdAndVmId(long poolId, long vmId) {
        SearchCriteria<StoragePoolWorkVO> sc = PoolAndVmIdSearch.create();
        sc.setParameters("poolId", poolId);
        sc.setParameters("vmId", vmId);
        return listBy(sc).get(0);
    }
    
    @Override
    public void removePendingJobsOnMsRestart(long msId, long poolId) {
        //hung jobs are those which are stopped, but never started
        SearchCriteria<StoragePoolWorkVO> sc = PendingJobsForDeadMs.create();
        sc.setParameters("managementServerId", msId);
        sc.setParameters("poolId", poolId);
        sc.setParameters("stoppedForMaintenance", true);
        sc.setParameters("startedAfterMaintenance", false);        
        remove(sc);
    }
    
    @Override
    @DB
    public List<Long> searchForPoolIdsForPendingWorkJobs(long msId){
        
        StringBuilder sql = new StringBuilder(FindPoolIds);

        Transaction txn = Transaction.currentTxn();
        PreparedStatement pstmt = null;
        try {
            pstmt = txn.prepareAutoCloseStatement(sql.toString());
            pstmt.setLong(1, msId);

            ResultSet rs = pstmt.executeQuery();
            List<Long> poolIds = new ArrayList<Long>();

            while (rs.next()) {
                poolIds.add(rs.getLong("pool_id"));
            }           
            return poolIds;
        } catch (SQLException e) {
            throw new CloudRuntimeException("Unable to execute " + pstmt.toString(), e);
        }

    }
}