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/* Copyright (c) 2009 Peter Troshin
*
* JAva Bioinformatics Analysis Web Services (JABAWS) @version: 1.0
*
* This library is free software; you can redistribute it and/or modify it under the terms of the
* Apache License version 2 as published by the Apache Software Foundation
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Apache
* License for more details.
*
* A copy of the license is in apache_license.txt. It is also available here:
* @see: http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Any republication or derived work distributed in source code form
* must include this copyright and license notice.
*/
package compbio.engine.local;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import org.apache.log4j.Logger;
import compbio.util.SysPrefs;
import compbio.util.annotation.ThreadSafe;
@ThreadSafe()
public class StreamGobbler implements Runnable {
enum OutputType {
OUTPUT, ERROR
};
private static final Logger log = Logger.getLogger(StreamGobbler.class);
final private InputStream is;
final private OutputStream os;
final private OutputType type;
StreamGobbler(InputStream is, OutputStream os, OutputType type) {
this.is = is;
this.os = os;
this.type = type;
}
public void run() {
BufferedReader br = new BufferedReader(new InputStreamReader(is));
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os));
String line = null;
try {
while ((line = br.readLine()) != null && !Thread.interrupted()) {
log.trace(type + ">" + line);
writer.write(line + SysPrefs.newlinechar);
}
br.close();
writer.close();
} catch (IOException ioe) {
log.error(ioe.getMessage(), ioe.getCause());
} finally {
closeSilently(br);
closeSilently(writer);
}
}
private static void closeSilently(Closeable stream) {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
log.error(e.getLocalizedMessage(), e.getCause());
}
}
}
}
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