/*******************************************************************************
* Copyright (c) 2012-2017 Codenvy, S.A.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Codenvy, S.A. - initial API and implementation
*******************************************************************************/
package org.eclipse.che.api.core.util;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/** @author andrew00x */
public final class StreamPump implements Runnable {
private BufferedReader bufferedReader;
private LineConsumer lineConsumer;
private Exception exception;
private boolean done;
public synchronized void start(Process process, LineConsumer lineConsumer) {
this.lineConsumer = lineConsumer;
bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
final Thread t = new Thread(this, "StreamPump");
t.setDaemon(true);
t.start();
}
public synchronized void stop() {
// Not clear do we need close original stream, but since it was wrapped by BufferedReader close it anyway.
try {
bufferedReader.close();
} catch (IOException ignored) {
}
}
public synchronized void await() throws InterruptedException {
while (!done) {
wait();
}
}
public synchronized boolean isDone() {
return done;
}
public boolean hasError() {
return null != exception;
}
public Exception getException() {
return exception;
}
@Override
public void run() {
String line;
try {
while ((line = bufferedReader.readLine()) != null) {
lineConsumer.writeLine(line);
}
} catch (IOException e) {
exception = e;
} finally {
synchronized (this) {
done = true;
notifyAll();
}
}
}
}