io.airlift.log.LoggingOutputStream Maven / Gradle / Ivy
/*
* Copyright 2010 Proofpoint, Inc.
*
* 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 io.airlift.log;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
/**
* An OutputStream that writes contents to a Logger upon each call to flush()
*/
class LoggingOutputStream
extends ByteArrayOutputStream
{
private final Logger logger;
public LoggingOutputStream(Logger logger)
{
this.logger = logger;
}
/**
* write the current buffer contents to the underlying logger.
*/
@Override
public synchronized void flush()
throws IOException
{
super.flush();
String record = this.toString();
reset();
// Strip trailing new line typically added when this class is used via System.out.println
record = record.stripTrailing();
if (record.isEmpty()) {
// avoid empty records
return;
}
logger.info(record);
}
}