io.undertow.conduits.DebuggingStreamSinkConduit Maven / Gradle / Ivy
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* 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.Buffers;
import org.xnio.IoUtils;
import org.xnio.channels.StreamSourceChannel;
import org.xnio.conduits.AbstractStreamSinkConduit;
import org.xnio.conduits.ConduitWritableByteChannel;
import org.xnio.conduits.Conduits;
import org.xnio.conduits.StreamSinkConduit;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* Conduit that saves all the data that is written through it and can dump it to the console
*
* Obviously this should not be used in production.
*
* @author Stuart Douglas
*/
public class DebuggingStreamSinkConduit extends AbstractStreamSinkConduit {
private static final List data = new CopyOnWriteArrayList<>();
/**
* Construct a new instance.
*
* @param next the delegate conduit to set
*/
public DebuggingStreamSinkConduit(StreamSinkConduit next) {
super(next);
}
@Override
public int write(ByteBuffer src) throws IOException {
int pos = src.position();
int res = super.write(src);
if (res > 0) {
byte[] d = new byte[res];
for (int i = 0; i < res; ++i) {
d[i] = src.get(i + pos);
}
data.add(d);
}
return res;
}
@Override
public long write(ByteBuffer[] dsts, int offs, int len) throws IOException {
for (int i = offs; i < len; ++i) {
if (dsts[i].hasRemaining()) {
return write(dsts[i]);
}
}
return 0;
}
@Override
public long transferFrom(final FileChannel src, final long position, final long count) throws IOException {
return src.transferTo(position, count, new ConduitWritableByteChannel(this));
}
@Override
public long transferFrom(final StreamSourceChannel source, final long count, final ByteBuffer throughBuffer) throws IOException {
return IoUtils.transfer(source, count, throughBuffer, new ConduitWritableByteChannel(this));
}
@Override
public int writeFinal(ByteBuffer src) throws IOException {
return Conduits.writeFinalBasic(this, src);
}
@Override
public long writeFinal(ByteBuffer[] srcs, int offset, int length) throws IOException {
return Conduits.writeFinalBasic(this, srcs, offset, length);
}
public static void dump() {
for (int i = 0; i < data.size(); ++i) {
System.out.println("Write Buffer " + i);
StringBuilder sb = new StringBuilder();
try {
Buffers.dump(ByteBuffer.wrap(data.get(i)), sb, 0, 20);
} catch (IOException e) {
throw new RuntimeException(e);
}
System.out.println(sb);
System.out.println();
}
}
}