/*
* Copyright 2014 Red Hat, 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.nodyn.netty.pipe;
import io.netty.buffer.ByteBuf;
import io.netty.channel.FileRegion;
import io.nodyn.NodeProcess;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import java.nio.channels.Pipe;
/**
* @author Bob McWhirter
*/
public class NioInputStreamChannel extends AbstractNioStreamChannel {
private final InputStream in;
private final Pipe pipe;
public static NioInputStreamChannel create(NodeProcess process, InputStream in) throws IOException {
Pipe pipe = Pipe.open();
return new NioInputStreamChannel(process, in, pipe);
}
protected NioInputStreamChannel(NodeProcess process, InputStream in, Pipe pipe) {
super(process, pipe);
this.pipe = pipe;
this.in = in;
startPump();
}
@Override
protected Pipe.SourceChannel javaChannel() {
return (Pipe.SourceChannel) super.javaChannel();
}
protected void startPump() {
this.process.getEventLoop().submitBlockingTask(new Runnable() {
@Override
public void run() {
byte[] buf = new byte[1024];
int numRead = 0;
try {
while ((numRead = NioInputStreamChannel.this.in.read(buf)) >= 0) {
NioInputStreamChannel.this.pipe.sink().write(ByteBuffer.wrap(buf, 0, numRead));
}
NioInputStreamChannel.this.pipe.sink().close();
} catch (IOException e) {
NioInputStreamChannel.this.process.getNodyn().handleThrowable(e);
try {
NioInputStreamChannel.this.pipe.sink().close();
} catch (IOException e1) {
NioInputStreamChannel.this.process.getNodyn().handleThrowable(e);
}
}
}
});
}
@Override
protected long doWriteFileRegion(FileRegion region) throws Exception {
return 0;
}
@Override
protected int doReadBytes(ByteBuf byteBuf) throws Exception {
return byteBuf.writeBytes(javaChannel(), byteBuf.writableBytes());
}
@Override
protected int doWriteBytes(ByteBuf buf) throws Exception {
return 0;
}
@Override
protected void doClose() throws Exception {
this.pipe.source().close();
}
@Override
public boolean isActive() {
return this.pipe.source().isOpen();
}
}