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/*
* Copyright (C) 2009, 2013 Google Inc. and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.util.io;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InterruptedIOException;
import java.text.MessageFormat;
import org.eclipse.jgit.internal.JGitText;
/**
* InputStream with a configurable timeout.
*/
public class TimeoutInputStream extends FilterInputStream {
private final InterruptTimer myTimer;
private int timeout;
/**
* Wrap an input stream with a timeout on all read operations.
*
* @param src
* base input stream (to read from). The stream must be
* interruptible (most socket streams are).
* @param timer
* timer to manage the timeouts during reads.
*/
public TimeoutInputStream(final InputStream src,
final InterruptTimer timer) {
super(src);
myTimer = timer;
}
/**
* Get number of milliseconds before aborting a read.
*
* @return number of milliseconds before aborting a read.
*/
public int getTimeout() {
return timeout;
}
/**
* Set number of milliseconds before aborting a read.
*
* @param millis
* number of milliseconds before aborting a read. Must be > 0.
*/
public void setTimeout(int millis) {
if (millis < 0)
throw new IllegalArgumentException(MessageFormat.format(
JGitText.get().invalidTimeout, Integer.valueOf(millis)));
timeout = millis;
}
@Override
public int read() throws IOException {
try {
beginRead();
return super.read();
} catch (InterruptedIOException e) {
throw readTimedOut(e);
} finally {
endRead();
}
}
@Override
public int read(byte[] buf) throws IOException {
return read(buf, 0, buf.length);
}
@Override
public int read(byte[] buf, int off, int cnt) throws IOException {
try {
beginRead();
return super.read(buf, off, cnt);
} catch (InterruptedIOException e) {
throw readTimedOut(e);
} finally {
endRead();
}
}
@Override
public long skip(long cnt) throws IOException {
try {
beginRead();
return super.skip(cnt);
} catch (InterruptedIOException e) {
throw readTimedOut(e);
} finally {
endRead();
}
}
private void beginRead() {
myTimer.begin(timeout);
}
private void endRead() {
myTimer.end();
}
private InterruptedIOException readTimedOut(InterruptedIOException e) {
InterruptedIOException interrupted = new InterruptedIOException(
MessageFormat.format(JGitText.get().readTimedOut,
Integer.valueOf(timeout)));
interrupted.initCause(e);
return interrupted;
}
}
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