// 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.upgrade.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import javax.ejb.Local;
import org.apache.log4j.Logger;
import com.cloud.upgrade.dao.VersionVO.Step;
import com.cloud.utils.db.DB;
import com.cloud.utils.db.Filter;
import com.cloud.utils.db.GenericDaoBase;
import com.cloud.utils.db.GenericSearchBuilder;
import com.cloud.utils.db.SearchBuilder;
import com.cloud.utils.db.SearchCriteria;
import com.cloud.utils.db.SearchCriteria.Op;
import com.cloud.utils.db.Transaction;
import com.cloud.utils.exception.CloudRuntimeException;
@Local(value = VersionDao.class)
@DB(txn = false)
public class VersionDaoImpl extends GenericDaoBase<VersionVO, Long> implements VersionDao {
private static final Logger s_logger = Logger.getLogger(VersionDaoImpl.class);
final GenericSearchBuilder<VersionVO, String> CurrentVersionSearch;
final SearchBuilder<VersionVO> AllFieldsSearch;
protected VersionDaoImpl() {
super();
CurrentVersionSearch = createSearchBuilder(String.class);
CurrentVersionSearch.selectField(CurrentVersionSearch.entity().getVersion());
CurrentVersionSearch.and("step", CurrentVersionSearch.entity().getStep(), Op.EQ);
CurrentVersionSearch.done();
AllFieldsSearch = createSearchBuilder();
AllFieldsSearch.and("version", AllFieldsSearch.entity().getVersion(), Op.EQ);
AllFieldsSearch.and("step", AllFieldsSearch.entity().getStep(), Op.EQ);
AllFieldsSearch.and("updated", AllFieldsSearch.entity().getUpdated(), Op.EQ);
AllFieldsSearch.done();
}
@Override
public VersionVO findByVersion(String version, Step step) {
SearchCriteria<VersionVO> sc = AllFieldsSearch.create();
sc.setParameters("version", version);
sc.setParameters("step", step);
return findOneBy(sc);
}
@Override
public String getCurrentVersion() {
Connection conn = null;
try {
s_logger.debug("Checking to see if the database is at a version before it was the version table is created");
conn = Transaction.getStandaloneConnection();
PreparedStatement pstmt = conn.prepareStatement("SHOW TABLES LIKE 'version'");
ResultSet rs = pstmt.executeQuery();
if (!rs.next()) {
rs.close();
pstmt.close();
pstmt = conn.prepareStatement("SHOW TABLES LIKE 'nics'");
rs = pstmt.executeQuery();
if (!rs.next()) {
rs.close();
pstmt.close();
pstmt = conn.prepareStatement("SELECT domain_id FROM account_vlan_map LIMIT 1");
try {
pstmt.executeQuery();
return "2.1.8";
} catch (SQLException e) {
s_logger.debug("Assuming the exception means domain_id is not there.");
s_logger.debug("No version table and no nics table, returning 2.1.7");
return "2.1.7";
} finally {
pstmt.close();
}
} else {
try {
rs.close();
pstmt.close();
pstmt = conn.prepareStatement("SELECT is_static_nat from firewall_rules");
pstmt.executeQuery();
return "2.2.1";
} catch (SQLException e) {
s_logger.debug("Assuming the exception means static_nat field doesn't exist in firewall_rules table, returning version 2.2.2");
return "2.2.2";
} finally {
rs.close();
pstmt.close();
}
}
}
SearchCriteria<String> sc = CurrentVersionSearch.create();
sc.setParameters("step", Step.Complete);
Filter filter = new Filter(VersionVO.class, "id", false, 0l, 1l);
List<String> upgradedVersions = customSearch(sc, filter);
if (upgradedVersions.isEmpty()) {
// Check if there are records in Version table
filter = new Filter(VersionVO.class, "id", false, 0l, 1l);
sc = CurrentVersionSearch.create();
List<String> vers = customSearch(sc, filter);
if (!vers.isEmpty()) {
throw new CloudRuntimeException("Version table contains records for which upgrade wasn't completed");
}
// Use nics table information and is_static_nat field from firewall_rules table to determine version information
try {
s_logger.debug("Version table exists, but it's empty; have to confirm that version is 2.2.2");
pstmt = conn.prepareStatement("SHOW TABLES LIKE 'nics'");
rs = pstmt.executeQuery();
if (!rs.next()) {
throw new CloudRuntimeException("Unable to determine the current version, version table exists and empty, nics table doesn't exist");
} else {
pstmt = conn.prepareStatement("SELECT is_static_nat from firewall_rules");
pstmt.executeQuery();
throw new CloudRuntimeException(
"Unable to determine the current version, version table exists and empty, nics table doesn't exist, is_static_nat field exists in firewall_rules table");
}
} catch (SQLException e) {
s_logger.debug("Assuming the exception means static_nat field doesn't exist in firewall_rules table, returning version 2.2.2");
return "2.2.2";
} finally {
rs.close();
pstmt.close();
}
} else {
return upgradedVersions.get(0);
}
} catch (SQLException e) {
throw new CloudRuntimeException("Unable to get the current version", e);
} finally {
try {
conn.close();
} catch (SQLException e) {
}
}
}
}