/*
* 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.conduits;
import java.io.
IOException;
import java.nio.
ByteBuffer;
import org.xnio.
Buffers;
import org.xnio.conduits.
AbstractStreamSinkConduit;
import org.xnio.conduits.
StreamSinkConduit;
/**
* @author <a href="mailto:david.lloyd@redhat.com">David M. Lloyd</a>
*/
public final class
FinishableStreamSinkConduit extends
AbstractStreamSinkConduit<
StreamSinkConduit> {
private final
ConduitListener<? super
FinishableStreamSinkConduit>
finishListener;
//0 = open
//1 = writes shutdown
//2 = finish listener invoked
private int
shutdownState = 0;
public
FinishableStreamSinkConduit(final
StreamSinkConduit delegate, final
ConduitListener<? super
FinishableStreamSinkConduit>
finishListener) {
super(
delegate);
this.
finishListener =
finishListener;
}
@
Override
public int
writeFinal(
ByteBuffer src) throws
IOException {
int
res =
next.
writeFinal(
src);
if(!
src.
hasRemaining()) {
if (
shutdownState == 0) {
shutdownState = 1;
}
}
return
res;
}
@
Override
public long
writeFinal(
ByteBuffer[]
srcs, int
offset, int
length) throws
IOException {
long
res =
next.
writeFinal(
srcs,
offset,
length);
if(!
Buffers.
hasRemaining(
srcs,
offset,
length)) {
if (
shutdownState == 0) {
shutdownState = 1;
}
}
return
res;
}
public void
terminateWrites() throws
IOException {
super.terminateWrites();
if (
shutdownState == 0) {
shutdownState = 1;
}
}
@
Override
public void
truncateWrites() throws
IOException {
next.
truncateWrites();
if (
shutdownState != 2) {
shutdownState = 2;
finishListener.
handleEvent(this);
}
}
public boolean
flush() throws
IOException {
final boolean
val =
next.
flush();
if (
val &&
shutdownState == 1) {
shutdownState = 2;
finishListener.
handleEvent(this);
}
return
val;
}
}