Package com.cloud.storage.dao

Source Code of com.cloud.storage.dao.VMTemplateHostDaoImpl

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//   http://www.apache.org/licenses/LICENSE-2.0
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package com.cloud.storage.dao;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.TimeZone;

import javax.ejb.Local;
import javax.naming.ConfigurationException;

import org.apache.log4j.Logger;

import com.cloud.host.Host;
import com.cloud.host.HostVO;
import com.cloud.host.dao.HostDao;
import com.cloud.storage.VMTemplateHostVO;
import com.cloud.storage.VMTemplateStorageResourceAssoc.Status;
import com.cloud.utils.DateUtil;
import com.cloud.utils.component.Inject;
import com.cloud.utils.db.GenericDaoBase;
import com.cloud.utils.db.JoinBuilder;
import com.cloud.utils.db.SearchBuilder;
import com.cloud.utils.db.SearchCriteria;
import com.cloud.utils.db.Transaction;

@Local(value={VMTemplateHostDao.class})
public class VMTemplateHostDaoImpl extends GenericDaoBase<VMTemplateHostVO, Long> implements VMTemplateHostDao {
  public static final Logger s_logger = Logger.getLogger(VMTemplateHostDaoImpl.class.getName());
    @Inject
    HostDao   _hostDao;
  protected final SearchBuilder<VMTemplateHostVO> HostSearch;
  protected final SearchBuilder<VMTemplateHostVO> TemplateSearch;
  protected final SearchBuilder<VMTemplateHostVO> HostTemplateSearch;
  protected final SearchBuilder<VMTemplateHostVO> HostTemplateStateSearch;
  protected final SearchBuilder<VMTemplateHostVO> HostDestroyedSearch;
  protected final SearchBuilder<VMTemplateHostVO> TemplateStatusSearch;
  protected final SearchBuilder<VMTemplateHostVO> TemplateStatesSearch;
  protected SearchBuilder<VMTemplateHostVO> ZONE_TEMPLATE_SEARCH;
  protected SearchBuilder<VMTemplateHostVO> LOCAL_SECONDARY_STORAGE_SEARCH;

 
  protected static final String UPDATE_TEMPLATE_HOST_REF =
    "UPDATE template_host_ref SET download_state = ?, download_pct= ?, last_updated = ? "
  +   ", error_str = ?, local_path = ?, job_id = ? "
  +   "WHERE host_id = ? and type_id = ?";
     
  protected static final String DOWNLOADS_STATE_DC=
    "SELECT t.id, t.host_id, t.template_id, t.created, t.last_updated, t.job_id, "
  +   "t.download_pct, t.size, t.physical_size, t.download_state, t.error_str, t.local_path, "
  +   "t.install_path, t.url, t.destroyed, t.is_copy FROM template_host_ref t, host h "
  +   "where t.host_id = h.id and h.data_center_id=? "
  " and t.template_id=? and t.download_state = ?" ;
 
  protected static final String DOWNLOADS_STATE_DC_POD=
    "SELECT * FROM template_host_ref t, host h where t.host_id = h.id and h.data_center_id=? and h.pod_id=? "
  " and t.template_id=? and t.download_state=?" ;
 
  protected static final String DOWNLOADS_STATE=
    "SELECT * FROM template_host_ref t "
  " where t.template_id=? and t.download_state=?";
 
  public VMTemplateHostDaoImpl () {
    HostSearch = createSearchBuilder();
    HostSearch.and("host_id", HostSearch.entity().getHostId(), SearchCriteria.Op.EQ);
    HostSearch.done();
   
    TemplateSearch = createSearchBuilder();
    TemplateSearch.and("template_id", TemplateSearch.entity().getTemplateId(), SearchCriteria.Op.EQ);
    TemplateSearch.and("destroyed", TemplateSearch.entity().getDestroyed(), SearchCriteria.Op.EQ);
    TemplateSearch.done();
   
    HostTemplateSearch = createSearchBuilder();
    HostTemplateSearch.and("host_id", HostTemplateSearch.entity().getHostId(), SearchCriteria.Op.EQ);
    HostTemplateSearch.and("template_id", HostTemplateSearch.entity().getTemplateId(), SearchCriteria.Op.EQ);
        HostTemplateSearch.and("destroyed", HostTemplateSearch.entity().getDestroyed(), SearchCriteria.Op.EQ);
        HostTemplateSearch.done();
   
    HostDestroyedSearch = createSearchBuilder();
    HostDestroyedSearch.and("host_id", HostDestroyedSearch.entity().getHostId(), SearchCriteria.Op.EQ);
    HostDestroyedSearch.and("destroyed", HostDestroyedSearch.entity().getDestroyed(), SearchCriteria.Op.EQ);
    HostDestroyedSearch.done();   
   
    TemplateStatusSearch = createSearchBuilder();
    TemplateStatusSearch.and("template_id", TemplateStatusSearch.entity().getTemplateId(), SearchCriteria.Op.EQ);
    TemplateStatusSearch.and("download_state", TemplateStatusSearch.entity().getDownloadState(), SearchCriteria.Op.EQ);
        TemplateStatusSearch.and("destroyed", TemplateStatusSearch.entity().getDestroyed(), SearchCriteria.Op.EQ);
        TemplateStatusSearch.done();

        TemplateStatesSearch = createSearchBuilder();
        TemplateStatesSearch.and("template_id", TemplateStatesSearch.entity().getTemplateId(), SearchCriteria.Op.EQ);
        TemplateStatesSearch.and("states", TemplateStatesSearch.entity().getDownloadState(), SearchCriteria.Op.IN);
        TemplateStatesSearch.and("destroyed", TemplateStatesSearch.entity().getDestroyed(), SearchCriteria.Op.EQ);
        TemplateStatesSearch.done();

        HostTemplateStateSearch = createSearchBuilder();
        HostTemplateStateSearch.and("template_id", HostTemplateStateSearch.entity().getTemplateId(), SearchCriteria.Op.EQ);
        HostTemplateStateSearch.and("host_id", HostTemplateStateSearch.entity().getHostId(), SearchCriteria.Op.EQ);
        HostTemplateStateSearch.and("states", HostTemplateStateSearch.entity().getDownloadState(), SearchCriteria.Op.IN);
        HostTemplateStateSearch.and("destroyed", HostTemplateStateSearch.entity().getDestroyed(), SearchCriteria.Op.EQ);
        HostTemplateStateSearch.done();

    }
 
  @Override
  public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
      boolean result = super.configure(name, params);
      ZONE_TEMPLATE_SEARCH = createSearchBuilder();
      ZONE_TEMPLATE_SEARCH.and("template_id", ZONE_TEMPLATE_SEARCH.entity().getTemplateId(), SearchCriteria.Op.EQ);
      ZONE_TEMPLATE_SEARCH.and("state", ZONE_TEMPLATE_SEARCH.entity().getDownloadState(), SearchCriteria.Op.EQ);
      SearchBuilder<HostVO> hostSearch = _hostDao.createSearchBuilder();
      hostSearch.and("zone_id", hostSearch.entity().getDataCenterId(), SearchCriteria.Op.EQ);
      ZONE_TEMPLATE_SEARCH.join("tmplHost", hostSearch, hostSearch.entity().getId(), ZONE_TEMPLATE_SEARCH.entity().getHostId(), JoinBuilder.JoinType.INNER);
      ZONE_TEMPLATE_SEARCH.done();
     
      LOCAL_SECONDARY_STORAGE_SEARCH = createSearchBuilder();
      LOCAL_SECONDARY_STORAGE_SEARCH.and("template_id", LOCAL_SECONDARY_STORAGE_SEARCH.entity().getTemplateId(), SearchCriteria.Op.EQ);
      LOCAL_SECONDARY_STORAGE_SEARCH.and("state", LOCAL_SECONDARY_STORAGE_SEARCH.entity().getDownloadState(), SearchCriteria.Op.EQ);
      SearchBuilder<HostVO> localSecondaryHost = _hostDao.createSearchBuilder();
      localSecondaryHost.and("private_ip_address", localSecondaryHost.entity().getPrivateIpAddress(), SearchCriteria.Op.EQ);
      localSecondaryHost.and("state", localSecondaryHost.entity().getStatus(), SearchCriteria.Op.EQ);
      localSecondaryHost.and("data_center_id", localSecondaryHost.entity().getDataCenterId(), SearchCriteria.Op.EQ);
      localSecondaryHost.and("type", localSecondaryHost.entity().getType(), SearchCriteria.Op.EQ);
      LOCAL_SECONDARY_STORAGE_SEARCH.join("host", localSecondaryHost, localSecondaryHost.entity().getId(), LOCAL_SECONDARY_STORAGE_SEARCH.entity().getHostId(), JoinBuilder.JoinType.INNER);
      LOCAL_SECONDARY_STORAGE_SEARCH.done();
     
      return result;
  }
  @Override
    public void update(VMTemplateHostVO instance) {
        Transaction txn = Transaction.currentTxn();
    PreparedStatement pstmt = null;
    try {
      Date now = new Date();
      String sql = UPDATE_TEMPLATE_HOST_REF;
      pstmt = txn.prepareAutoCloseStatement(sql);
      pstmt.setString(1, instance.getDownloadState().toString());
      pstmt.setInt(2, instance.getDownloadPercent());
      pstmt.setString(3, DateUtil.getDateDisplayString(TimeZone.getTimeZone("GMT"), now));
      pstmt.setString(4, instance.getErrorString());
      pstmt.setString(5, instance.getLocalDownloadPath());
      pstmt.setString(6, instance.getJobId());
      pstmt.setLong(7, instance.getHostId());
      pstmt.setLong(8, instance.getTemplateId());
      pstmt.executeUpdate();
    } catch (Exception e) {
      s_logger.warn("Exception: ", e);
    }
  } 

  @Override
  public List<VMTemplateHostVO> listByHostId(long id) {
      SearchCriteria<VMTemplateHostVO> sc = HostSearch.create();
      sc.setParameters("host_id", id);
      return listIncludingRemovedBy(sc);
  }

  @Override
  public List<VMTemplateHostVO> listByTemplateId(long templateId) {
      SearchCriteria<VMTemplateHostVO> sc = TemplateSearch.create();
      sc.setParameters("template_id", templateId);
      sc.setParameters("destroyed", false);
      return listIncludingRemovedBy(sc);
  }
 
 
  @Override
  public List<VMTemplateHostVO> listByOnlyTemplateId(long templateId) {
      SearchCriteria<VMTemplateHostVO> sc = TemplateSearch.create();
        sc.setParameters("template_id", templateId);
        sc.setParameters("destroyed", false);
      return listIncludingRemovedBy(sc);
  }

  @Override
  public VMTemplateHostVO findByHostTemplate(long hostId, long templateId) {
    SearchCriteria<VMTemplateHostVO> sc = HostTemplateSearch.create();
      sc.setParameters("host_id", hostId);
      sc.setParameters("template_id", templateId);
        sc.setParameters("destroyed", false);
        return findOneIncludingRemovedBy(sc);
  }
 
  @Override
  public List<VMTemplateHostVO> listByTemplateStatus(long templateId, VMTemplateHostVO.Status downloadState) {
    SearchCriteria<VMTemplateHostVO> sc = TemplateStatusSearch.create();
    sc.setParameters("template_id", templateId);
    sc.setParameters("download_state", downloadState.toString());
        sc.setParameters("destroyed", false);
        return listIncludingRemovedBy(sc);
  }
 
  @Override
  public List<VMTemplateHostVO> listByTemplateStatus(long templateId, long datacenterId, VMTemplateHostVO.Status downloadState) {
        Transaction txn = Transaction.currentTxn();
    PreparedStatement pstmt = null;
    List<VMTemplateHostVO> result = new ArrayList<VMTemplateHostVO>();
    try {
      String sql = DOWNLOADS_STATE_DC;
      pstmt = txn.prepareAutoCloseStatement(sql);
      pstmt.setLong(1, datacenterId);
      pstmt.setLong(2, templateId);
      pstmt.setString(3, downloadState.toString());
      ResultSet rs = pstmt.executeQuery();
      while (rs.next()) {
                result.add(toEntityBean(rs, false));
            }
    } catch (Exception e) {
      s_logger.warn("Exception: ", e);
    }
    return result;
  }

    @Override
    public List<VMTemplateHostVO> listByTemplateHostStatus(long templateId, long hostId, VMTemplateHostVO.Status... states) {      
        SearchCriteria<VMTemplateHostVO> sc = HostTemplateStateSearch.create();
        sc.setParameters("template_id", templateId);
        sc.setParameters("host_id", hostId);
        sc.setParameters("states", (Object[])states);
        sc.setParameters("destroyed", false);
        return search(sc, null);
    }
    
  @Override
  public List<VMTemplateHostVO> listByTemplateStatus(long templateId, long datacenterId, long podId, VMTemplateHostVO.Status downloadState) {
        Transaction txn = Transaction.currentTxn();
    PreparedStatement pstmt = null;
    List<VMTemplateHostVO> result = new ArrayList<VMTemplateHostVO>();
    ResultSet rs = null;
    try {
      String sql = DOWNLOADS_STATE_DC_POD;
      pstmt = txn.prepareStatement(sql);
     
      pstmt.setLong(1, datacenterId);
      pstmt.setLong(2, podId);
      pstmt.setLong(3, templateId);
      pstmt.setString(4, downloadState.toString());
      rs = pstmt.executeQuery();
      while (rs.next()) {
                // result.add(toEntityBean(rs, false)); TODO: this is buggy in GenericDaoBase for hand constructed queries
        long id = rs.getLong(1); //ID column
        result.add(findById(id));
            }
    } catch (Exception e) {
      s_logger.warn("Exception: ", e);
    } finally {
      try {
        if (rs != null) {
          rs.close();
        }
        if (pstmt != null) {
          pstmt.close();
        }
      } catch (SQLException e) {
      }
    }
    return result;

  }

  @Override
  public boolean templateAvailable(long templateId, long hostId) {
    VMTemplateHostVO tmpltHost = findByHostTemplate(hostId, templateId);
    if (tmpltHost == null)
      return false;
   
    return tmpltHost.getDownloadState()==Status.DOWNLOADED;
  }

  @Override
  public List<VMTemplateHostVO> listByTemplateStates(long templateId, VMTemplateHostVO.Status... states) {
      SearchCriteria<VMTemplateHostVO> sc = TemplateStatesSearch.create();
      sc.setParameters("states", (Object[])states);
    sc.setParameters("template_id", templateId);
        sc.setParameters("destroyed", false);
        return search(sc, null);
  }

    @Override
    public List<VMTemplateHostVO> listByState(VMTemplateHostVO.Status state) {
        SearchCriteria<VMTemplateHostVO> sc = createSearchCriteria();
        sc.addAnd("downloadState", SearchCriteria.Op.EQ, state);
        sc.addAnd("destroyed", SearchCriteria.Op.EQ, false);
        return search(sc, null);
    }

  @Override
  public List<VMTemplateHostVO> listByHostTemplate(long hostId, long templateId) {
    SearchCriteria<VMTemplateHostVO> sc = HostTemplateSearch.create();
      sc.setParameters("host_id", hostId);
        sc.setParameters("template_id", templateId);
        sc.setParameters("destroyed", false);
        return listIncludingRemovedBy(sc);
  }

    @Override
    public List<VMTemplateHostVO> listByZoneTemplate(long dcId, long templateId, boolean readyOnly) {
        SearchCriteria<VMTemplateHostVO> sc = ZONE_TEMPLATE_SEARCH.create();
        sc.setParameters("template_id", templateId);
        sc.setJoinParameters("tmplHost", "zone_id", dcId);
        if (readyOnly) {
            sc.setParameters("state", VMTemplateHostVO.Status.DOWNLOADED);
        }
        return listBy(sc);
    }
 
  @Override
  public List<VMTemplateHostVO> listDestroyed(long hostId) {
    SearchCriteria<VMTemplateHostVO> sc = HostDestroyedSearch.create();
    sc.setParameters("host_id", hostId);
    sc.setParameters("destroyed", true);
    return listIncludingRemovedBy(sc);
  }

  @Override
  public VMTemplateHostVO findByHostTemplate(long hostId, long templateId, boolean lock) {
    SearchCriteria<VMTemplateHostVO> sc = HostTemplateSearch.create();
      sc.setParameters("host_id", hostId);
      sc.setParameters("template_id", templateId);
        sc.setParameters("destroyed", false);
      if (!lock)
        return findOneIncludingRemovedBy(sc);
      else
        return lockOneRandomRow(sc, true);
  }
 
  //Based on computing node host id, and template id, find out the corresponding template_host_ref, assuming local secondary storage and computing node is in the same zone, and private ip
  @Override
  public VMTemplateHostVO findLocalSecondaryStorageByHostTemplate(long hostId, long templateId) {
      HostVO computingHost = _hostDao.findById(hostId);
      SearchCriteria<VMTemplateHostVO> sc = LOCAL_SECONDARY_STORAGE_SEARCH.create();
      sc.setJoinParameters("host", "private_ip_address", computingHost.getPrivateIpAddress());
      sc.setJoinParameters("host", "state", com.cloud.host.Status.Up);
      sc.setJoinParameters("host", "data_center_id", computingHost.getDataCenterId());
      sc.setJoinParameters("host", "type", Host.Type.LocalSecondaryStorage);
      sc.setParameters("template_id", templateId);
      sc.setParameters("state", VMTemplateHostVO.Status.DOWNLOADED);
        sc.setParameters("destroyed", false);
      return findOneBy(sc);
  }

    @Override
    public void deleteByHost(Long hostId) {
        List<VMTemplateHostVO> tmpltHosts = listByHostId(hostId);
        for (VMTemplateHostVO tmpltHost : tmpltHosts ) {
            remove(tmpltHost.getId());
        }
    }

}
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