/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at
* trunk/opends/resource/legal-notices/OpenDS.LICENSE
* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
* add the following below this CDDL HEADER, with the fields enclosed
* by brackets "[]" replaced with your own identifying information:
* Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
*
* Copyright 2006-2009 Sun Microsystems, Inc.
*/
package org.opends.server.types;
import java.io.InputStream;
import java.io.IOException;
/**
* A wrapper InputStream that will record all reads from an underlying
* InputStream. The recorded bytes will append to any previous
* recorded bytes until the clear method is called.
*/
public class RecordingInputStream extends InputStream
{
private boolean enableRecording;
private InputStream parentStream;
private ByteStringBuilder buffer;
/**
* Constructs a new RecordingInputStream that will record all reads
* from the given input stream.
*
* @param parentStream The input stream to record.
*/
public RecordingInputStream(InputStream parentStream)
{
this.enableRecording = false;
this.parentStream = parentStream;
this.buffer = new ByteStringBuilder(32);
}
/**
* {@inheritDoc}
*/
public int read() throws IOException {
int readByte = parentStream.read();
if(enableRecording)
{
buffer.append((byte)readByte);
}
return readByte;
}
/**
* {@inheritDoc}
*/
@Override
public int read(byte[] bytes) throws IOException {
int bytesRead = parentStream.read(bytes);
if(enableRecording)
{
buffer.append(bytes, 0, bytesRead);
}
return bytesRead;
}
/**
* {@inheritDoc}
*/
@Override
public int read(byte[] bytes, int i, int i1) throws IOException {
int bytesRead = parentStream.read(bytes, i, i1);
if(enableRecording)
{
buffer.append(bytes, i, bytesRead);
}
return bytesRead;
}
/**
* {@inheritDoc}
*/
@Override
public long skip(long l) throws IOException {
return parentStream.skip(l);
}
/**
* {@inheritDoc}
*/
@Override
public int available() throws IOException {
return parentStream.available();
}
/**
* {@inheritDoc}
*/
@Override
public void close() throws IOException {
parentStream.close();
}
/**
* {@inheritDoc}
*/
@Override
public void mark(int i) {
parentStream.mark(i);
}
/**
* {@inheritDoc}
*/
@Override
public void reset() throws IOException {
parentStream.reset();
}
/**
* {@inheritDoc}
*/
@Override
public boolean markSupported() {
return parentStream.markSupported();
}
/**
* Retrieve the bytes read from this input stream since the last
* clear.
*
* @return the bytes read from this input stream since the last
* clear.
*/
public ByteString getRecordedBytes() {
return buffer.toByteString();
}
/**
* Clear the bytes currently recorded by this input stream.
*/
public void clearRecordedBytes() {
buffer.clear();
}
/**
* Retrieves whether recording is enabled.
*
* @return whether recording is enabled.
*/
public boolean isRecordingEnabled()
{
return enableRecording;
}
/**
* Set whether if this input stream is recording all reads or not.
*
* @param enabled <code>true</code> to recording all reads or
* <code>false</code> otherwise.
*/
public void setRecordingEnabled(boolean enabled)
{
this.enableRecording = enabled;
}
}