io.undertow.conduits.ReadDataStreamSourceConduit 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 io.undertow.server.AbstractServerConnection;
import org.xnio.Buffers;
import org.xnio.IoUtils;
import io.undertow.connector.PooledByteBuffer;
import org.xnio.channels.StreamSinkChannel;
import org.xnio.conduits.AbstractStreamSourceConduit;
import org.xnio.conduits.ConduitReadableByteChannel;
import org.xnio.conduits.StreamSourceConduit;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.concurrent.TimeUnit;
/**
* @author Stuart Douglas
*/
public class ReadDataStreamSourceConduit extends AbstractStreamSourceConduit {
private final AbstractServerConnection connection;
public ReadDataStreamSourceConduit(final StreamSourceConduit next, final AbstractServerConnection connection) {
super(next);
this.connection = connection;
}
public long transferTo(final long position, final long count, final FileChannel target) throws IOException {
return target.transferFrom(new ConduitReadableByteChannel(this), position, count);
}
public long transferTo(final long count, final ByteBuffer throughBuffer, final StreamSinkChannel target) throws IOException {
return IoUtils.transfer(new ConduitReadableByteChannel(this), count, throughBuffer, target);
}
@Override
public int read(final ByteBuffer dst) throws IOException {
PooledByteBuffer eb = connection.getExtraBytes();
if (eb != null) {
final ByteBuffer buffer = eb.getBuffer();
int result = Buffers.copy(dst, buffer);
if (!buffer.hasRemaining()) {
eb.close();
connection.setExtraBytes(null);
}
return result;
} else {
return super.read(dst);
}
}
@Override
public long read(final ByteBuffer[] dsts, final int offs, final int len) throws IOException {
PooledByteBuffer eb = connection.getExtraBytes();
if (eb != null) {
final ByteBuffer buffer = eb.getBuffer();
int result = Buffers.copy(dsts, offs, len, buffer);
if (!buffer.hasRemaining()) {
eb.close();
connection.setExtraBytes(null);
}
return result;
} else {
return super.read(dsts, offs, len);
}
}
@Override
public void resumeReads() {
if (connection.getExtraBytes() != null) {
wakeupReads();
} else {
super.resumeReads();
}
}
@Override
public void awaitReadable() throws IOException {
if (connection.getExtraBytes() != null) {
return;
}
super.awaitReadable();
}
@Override
public void awaitReadable(final long time, final TimeUnit timeUnit) throws IOException {
if (connection.getExtraBytes() != null) {
return;
}
super.awaitReadable(time, timeUnit);
}
}