/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.undertow.websockets.utils;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.channels.ReadableByteChannel;
import java.util.concurrent.TimeUnit;
import org.xnio.ChannelListener;
import org.xnio.Option;
import org.xnio.XnioExecutor;
import org.xnio.XnioIoThread;
import org.xnio.XnioWorker;
import org.xnio.ChannelListener.Setter;
import org.xnio.channels.StreamSinkChannel;
import org.xnio.channels.StreamSourceChannel;
/**
*
*
* @author <a href="mailto:nmaurer@redhat.com">Norman Maurer</a>
*
*/
public class StreamSourceChannelAdapter implements StreamSourceChannel {
private final ReadableByteChannel channel;
private final ChannelListener.SimpleSetter<? extends StreamSourceChannel> readSetter = new ChannelListener.SimpleSetter<>();
private final ChannelListener.SimpleSetter<? extends StreamSourceChannel> closeSetter = new ChannelListener.SimpleSetter<>();
public StreamSourceChannelAdapter(ReadableByteChannel channel) {
this.channel = channel;
}
@Override
public int read(ByteBuffer dst) throws IOException {
return channel.read(dst);
}
@Override
public void close() throws IOException {
channel.close();
}
@Override
public boolean isOpen() {
return channel.isOpen();
}
@Override
public long read(ByteBuffer[] dst) throws IOException {
return read(dst, 0, dst.length);
}
@Override
public long read(ByteBuffer[] dsts, int offset, int length) throws IOException {
return channel.read(dsts[0]);
}
@Override
public void suspendReads() {
throw new UnsupportedOperationException();
}
@Override
public void resumeReads() {
throw new UnsupportedOperationException();
}
@Override
public boolean isReadResumed() {
throw new UnsupportedOperationException();
}
@Override
public void wakeupReads() {
throw new UnsupportedOperationException();
}
@Override
public void shutdownReads() throws IOException {
throw new UnsupportedOperationException();
}
@Override
public void awaitReadable() throws IOException {
throw new UnsupportedOperationException();
}
@Override
public void awaitReadable(long time, TimeUnit timeUnit) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public XnioExecutor getReadThread() {
throw new UnsupportedOperationException();
}
@Override
public XnioWorker getWorker() {
throw new UnsupportedOperationException();
}
@Override
public XnioIoThread getIoThread() {
return null;
}
@Override
public boolean supportsOption(Option<?> option) {
return false;
}
@Override
public <T> T getOption(Option<T> option) throws IOException {
return null;
}
@Override
public <T> T setOption(Option<T> option, T value) throws IOException {
return null;
}
@Override
public long transferTo(long position, long count, FileChannel target) throws IOException {
ByteBuffer buf = ByteBuffer.allocate((int) count);
int r = channel.read(buf);
buf.flip();
while(buf.hasRemaining()) {
if ( target.write(buf) < 1) {
throw new IOException("Unable to write out all bytes");
}
}
buf.clear();
return r;
}
@Override
public long transferTo(long count, ByteBuffer buf, StreamSinkChannel target) throws IOException {
buf.flip();
if (count < buf.remaining()) {
buf.limit(buf.position() + (int) count);
}
int r = channel.read(buf);
while(buf.hasRemaining()) {
if ( target.write(buf) < 1) {
throw new IOException("Unable to write out all bytes");
}
}
return r;
}
@Override
public Setter<? extends StreamSourceChannel> getReadSetter() {
return readSetter;
}
@Override
public Setter<? extends StreamSourceChannel> getCloseSetter() {
return closeSetter;
}
}