/*******************************************************************************
* 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.plugin.docker.client.connection;
import org.eclipse.che.plugin.docker.client.CLibrary;
import com.sun.jna.LastErrorException;
import java.io.IOException;
import java.io.InputStream;
import static org.eclipse.che.plugin.docker.client.CLibraryFactory.getCLibrary;
/**
* @author andrew00x
*/
public class UnixSocketInputStream extends InputStream {
private final int fd;
private final CLibrary cLib = getCLibrary();
UnixSocketInputStream(int fd) {
this.fd = fd;
}
@Override
public int read() throws IOException {
final byte[] bytes = new byte[1];
if (read(bytes) == 0) {
return -1;
}
return bytes[0];
}
@Override
public int read(byte[] b) throws IOException {
return read(b, 0, b.length);
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
if (b == null) {
throw new NullPointerException();
}
if (off < 0 || len < 0 || len > b.length - off) {
throw new IndexOutOfBoundsException();
}
if (len == 0) {
return 0;
}
int n;
try {
n = cLib.recv(fd, b, len, 0);
} catch (LastErrorException e) {
throw new IOException("error: " + cLib.strerror(e.getErrorCode()));
}
if (n == 0) {
return -1;
}
return n;
}
}