/*
* ModeShape (http://www.modeshape.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with 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.
*/
package org.modeshape.persistence.relational;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.SQLException;
import java.util.EnumSet;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
import org.modeshape.common.database.DatabaseType;
import org.modeshape.common.database.DatabaseUtil;
import org.modeshape.common.logging.Logger;
import com.zaxxer.hikari.HikariConfig;
import com.zaxxer.hikari.HikariDataSource;
/**
* Class which handles the configuration and actual database discovery for a {@link RelationalDb}
*
* @author Horia Chiorean (hchiorea@redhat.com)
* @since 5.0
*/
public final class DataSourceManager {
private static final Logger LOGGER = Logger.getLogger(DataSourceManager.class);
private static final EnumSet<DatabaseType.Name> SUPPORTED_DBS = EnumSet.of(DatabaseType.Name.H2,
DatabaseType.Name.MYSQL,
DatabaseType.Name.POSTGRES,
DatabaseType.Name.ORACLE,
DatabaseType.Name.SQLSERVER,
DatabaseType.Name.DB2);
private final DataSource dataSource;
private final DatabaseType dbType;
protected DataSourceManager(RelationalDbConfig config) {
dataSource = config.isDatasourceManaged() ? getFromJndi(config.datasourceJNDIName()) : createManagedDS(config);
try (Connection connection = newConnection(false, true)) {
DatabaseMetaData metaData = connection.getMetaData();
dbType = DatabaseUtil.determineType(metaData);
if (!SUPPORTED_DBS.contains(dbType.name())) {
throw new RelationalProviderException(RelationalProviderI18n.unsupportedDBError, dbType);
}
} catch (SQLException e) {
throw new RelationalProviderException(e);
}
}
private DataSource createManagedDS(RelationalDbConfig config) {
HikariConfig hikariCfg = new HikariConfig(config.datasourceConfig());
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Attempting to connect to '{0}' with '{1}' for username '{2}' and password '{3}'",
hikariCfg.getJdbcUrl(),
hikariCfg.getDriverClassName(), hikariCfg.getUsername(), "*****");
}
return new HikariDataSource(hikariCfg);
}
private DataSource getFromJndi(String jndiName) {
InitialContext initialContext = null;
try {
initialContext = new InitialContext();
Object result = initialContext.lookup(jndiName);
if (!(result instanceof DataSource)) {
throw new RelationalProviderException(RelationalProviderI18n.jndiError, jndiName, " incorrect type: " + result.getClass().getName());
}
return (DataSource) result;
} catch (NamingException e) {
throw new RelationalProviderException(e);
} finally {
if (initialContext != null) {
try {
initialContext.close();
} catch (NamingException e) {
LOGGER.debug(e, "Cannot close JNDI context");
}
}
}
}
protected DatabaseType dbType() {
return dbType;
}
protected DataSource dataSource() {
return dataSource;
}
protected Connection newConnection(boolean autocommit, boolean readonly) {
try {
Connection connection = dataSource.getConnection();
connection.setAutoCommit(autocommit);
connection.setTransactionIsolation(Connection.TRANSACTION_READ_COMMITTED);
connection.setReadOnly(readonly);
return connection;
} catch (SQLException e) {
throw new RelationalProviderException(e);
}
}
protected void close() {
if (dataSource instanceof HikariDataSource) {
// we're managing this, so force a close to release all connections...
((HikariDataSource) this.dataSource).close();
}
}
@Override
public String toString() {
return "DataSourceManager[" + "dataSource=" + dataSource + ", dbType=" + dbType + ']';
}
}