io.undertow.conduits.FinishableStreamSourceConduit Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* 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 org.xnio.channels.StreamSinkChannel;
import org.xnio.conduits.AbstractStreamSourceConduit;
import org.xnio.conduits.StreamSourceConduit;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
/**
* A conduit that calls a finish listener when there is no data left in the underlying conduit.
*
* @author Stuart Douglas
*/
public final class FinishableStreamSourceConduit extends AbstractStreamSourceConduit {
private final ConduitListener finishListener;
private boolean finishCalled = false;
public FinishableStreamSourceConduit(final StreamSourceConduit next, final ConduitListener finishListener) {
super(next);
this.finishListener = finishListener;
}
public long transferTo(final long position, final long count, final FileChannel target) throws IOException {
long res = 0;
try {
return res = next.transferTo(position, count, target);
} finally {
exitRead(res);
}
}
public long transferTo(final long count, final ByteBuffer throughBuffer, final StreamSinkChannel target) throws IOException {
long res = 0;
try {
return res = next.transferTo(count, throughBuffer, target);
} finally {
exitRead(res);
}
}
public long read(final ByteBuffer[] dsts, final int offset, final int length) throws IOException {
long res = 0;
try {
return res = next.read(dsts, offset, length);
} finally {
exitRead(res);
}
}
public int read(final ByteBuffer dst) throws IOException {
int res = 0;
try {
return res = next.read(dst);
} finally {
exitRead(res);
}
}
/**
* Exit a read method.
*
* @param consumed the number of bytes consumed by this call (may be 0)
*/
private void exitRead(long consumed) {
if (consumed == -1) {
if (!finishCalled) {
finishCalled = true;
finishListener.handleEvent(this);
}
}
}
}