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com.xceptance.xlt.engine.socket.InstrumentedInputStream Maven / Gradle / Ivy
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XLT (Xceptance LoadTest) is an extensive load and performance test tool developed and maintained by Xceptance.
/*
* Copyright (c) 2005-2023 Xceptance Software Technologies GmbH
*
* 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 com.xceptance.xlt.engine.socket;
import java.io.IOException;
import java.io.InputStream;
import com.xceptance.xlt.engine.RequestExecutionContext;
/**
* {@link InstrumentedInputStream} wraps an ordinary (socket) input stream to add monitoring functionality.
*
* @see SocketStatistics
*/
public class InstrumentedInputStream extends InputStream
{
/**
* The wrapped input stream.
*/
private final InputStream in;
/**
* Constructor.
*
* @param in
* the original input stream
*/
public InstrumentedInputStream(final InputStream in)
{
this.in = in;
}
/**
* {@inheritDoc}
*/
@Override
public int read() throws IOException
{
final int result = in.read();
// update statistics only if not EOF
if (result != -1)
{
RequestExecutionContext.getCurrent().getSocketMonitor().read(1);
}
return result;
}
/**
* {@inheritDoc}
*/
@Override
public int read(final byte[] b) throws IOException
{
return read(b, 0, b.length);
}
/**
* {@inheritDoc}
*/
@Override
public int read(final byte[] b, final int off, final int len) throws IOException
{
final int bytesRead = in.read(b, off, len);
// update statistics only if at least one byte was read
if (bytesRead > 0)
{
RequestExecutionContext.getCurrent().getSocketMonitor().read(bytesRead);
}
return bytesRead;
}
}
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