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/*
* Copyright 2006-2012 Amazon Technologies, Inc. or its affiliates.
* Amazon, Amazon.com and Carbonado are trademarks or registered trademarks
* of Amazon Technologies, Inc. or its affiliates. All rights reserved.
*
* 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 com.amazon.carbonado.repo.jdbc;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
import java.io.PrintWriter;
import javax.sql.DataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Wraps another DataSource such that all SQL statements are logged as debug.
*
* @author Brian S O'Neill
*/
public class LoggingDataSource implements DataSource {
/**
* Wraps the given DataSource which logs to the default log. If debug
* logging is disabled, the original DataSource is returned.
*/
public static DataSource create(DataSource ds) {
return create(ds, null);
}
/**
* Wraps the given DataSource which logs to the given log. If debug logging
* is disabled, the original DataSource is returned.
*/
public static DataSource create(DataSource ds, Log log) {
if (ds == null) {
throw new IllegalArgumentException();
}
if (log == null) {
log = LogFactory.getLog(LoggingDataSource.class);
}
if (!log.isDebugEnabled()) {
return ds;
}
return new LoggingDataSource(log, ds);
}
private final Log mLog;
private final DataSource mDataSource;
private LoggingDataSource(Log log, DataSource ds) {
mLog = log;
mDataSource = ds;
}
public Connection getConnection() throws SQLException {
mLog.debug("DataSource.getConnection()");
return new LoggingConnection(mLog, mDataSource.getConnection());
}
public Connection getConnection(String username, String password) throws SQLException {
mLog.debug("DataSource.getConnection(username, password)");
return new LoggingConnection(mLog, mDataSource.getConnection(username, password));
}
public PrintWriter getLogWriter() throws SQLException {
return mDataSource.getLogWriter();
}
public void setLogWriter(PrintWriter writer) throws SQLException {
mDataSource.setLogWriter(writer);
}
public void setLoginTimeout(int seconds) throws SQLException {
mDataSource.setLoginTimeout(seconds);
}
public int getLoginTimeout() throws SQLException {
return mDataSource.getLoginTimeout();
}
/**
* @since 1.2
*/
public void close() throws SQLException {
mLog.debug("DataSource.close()");
if (!JDBCRepository.closeDataSource(mDataSource)) {
mLog.debug("DataSource doesn't have a close method: " +
mDataSource.getClass().getName());
}
}
/**
* @since 1.2
*/
public <T> T unwrap(Class<T> iface) throws SQLException {
throw new UnsupportedOperationException();
}
/**
* @since 1.2
*/
public boolean isWrapperFor(Class<?> iface) throws SQLException {
throw new UnsupportedOperationException();
}
public java.util.logging.Logger getParentLogger() throws SQLFeatureNotSupportedException {
return mDataSource.getParentLogger();
}
}
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