/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.ambari.view.hive20.utils;
import org.slf4j.Logger;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
public class LoggingOutputStream extends OutputStream {
private final ByteArrayOutputStream baos = new ByteArrayOutputStream(1000);
private final Logger logger;
private final LogLevel level;
public enum LogLevel {
TRACE, DEBUG, INFO, WARN, ERROR,
}
public LoggingOutputStream(Logger logger, LogLevel level) {
this.logger = logger;
this.level = level;
}
@Override
public void write(int b) {
if (b == '\n') {
String line = baos.toString();
baos.reset();
switch (level) {
case TRACE:
logger.trace(line);
break;
case DEBUG:
logger.debug(line);
break;
case ERROR:
logger.error(line);
break;
case INFO:
logger.info(line);
break;
case WARN:
logger.warn(line);
break;
}
} else {
baos.write(b);
}
}
/**
* Closes this output stream and releases any system resources
* associated with this stream. The general contract of <code>close</code>
* is that it closes the output stream. A closed stream cannot perform
* output operations and cannot be reopened.
* <p/>
* The <code>close</code> method of <code>OutputStream</code> does nothing.
*
* @throws IOException if an I/O error occurs.
*/
@Override
public void close() throws IOException {
baos.close();
}
}