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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 nginx.unit.websocket;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.AsynchronousSocketChannel;
import java.nio.channels.CompletionHandler;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* Generally, just passes calls straight to the wrapped
* {@link AsynchronousSocketChannel}. In some cases exceptions may be swallowed
* to save them being swallowed by the calling code.
*/
public class AsyncChannelWrapperNonSecure implements AsyncChannelWrapper {
private static final Future<Void> NOOP_FUTURE = new NoOpFuture();
private final AsynchronousSocketChannel socketChannel;
public AsyncChannelWrapperNonSecure(
AsynchronousSocketChannel socketChannel) {
this.socketChannel = socketChannel;
}
@Override
public Future<Integer> read(ByteBuffer dst) {
return socketChannel.read(dst);
}
@Override
public <B,A extends B> void read(ByteBuffer dst, A attachment,
CompletionHandler<Integer,B> handler) {
socketChannel.read(dst, attachment, handler);
}
@Override
public Future<Integer> write(ByteBuffer src) {
return socketChannel.write(src);
}
@Override
public <B,A extends B> void write(ByteBuffer[] srcs, int offset, int length,
long timeout, TimeUnit unit, A attachment,
CompletionHandler<Long,B> handler) {
socketChannel.write(
srcs, offset, length, timeout, unit, attachment, handler);
}
@Override
public void close() {
try {
socketChannel.close();
} catch (IOException e) {
// Ignore
}
}
@Override
public Future<Void> handshake() {
return NOOP_FUTURE;
}
private static final class NoOpFuture implements Future<Void> {
@Override
public boolean cancel(boolean mayInterruptIfRunning) {
return false;
}
@Override
public boolean isCancelled() {
return false;
}
@Override
public boolean isDone() {
return true;
}
@Override
public Void get() throws InterruptedException, ExecutionException {
return null;
}
@Override
public Void get(long timeout, TimeUnit unit)
throws InterruptedException, ExecutionException,
TimeoutException {
return null;
}
}
}
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