/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2006-2008 Sun Microsystems, Inc.
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* Portions Copyright 2014-2016 ForgeRock AS.
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*/
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package org.opends.server.loggers;
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import java.io.IOException;
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import java.io.OutputStream;
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/**
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* A metered stream is a subclass of OutputStream that
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* (a) forwards all its output to a target stream
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* (b) keeps track of how many bytes have been written.
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*/
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public final class MeteredStream extends OutputStream
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{
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OutputStream out;
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volatile long written;
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/**
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* Create the stream wrapped around the specified output
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* stream.
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*
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* @param out The target output stream to keep track of.
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* @param written The number of bytes written to the stream.
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*/
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public MeteredStream(OutputStream out, long written)
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{
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this.out = out;
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this.written = written;
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}
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@Override
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public void write(int b) throws IOException
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{
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out.write(b);
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written++;
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}
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@Override
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public void write(byte buff[]) throws IOException
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{
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out.write(buff);
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written += buff.length;
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}
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@Override
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public void write(byte buff[], int off, int len) throws IOException
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{
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out.write(buff,off,len);
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written += len;
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}
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/**
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* Flush the output stream which flushes the target output stream.
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*
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* @exception IOException if the flush failed.
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*/
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@Override
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public void flush() throws IOException
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{
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out.flush();
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}
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/**
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* Close the output stream which closes the target output stream.
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*
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* @exception IOException if the close failed.
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*/
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@Override
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public void close() throws IOException
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{
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out.close();
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}
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/**
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* Returns the number of bytes written in this stream.
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*
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* @return the number of bytes
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*/
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public long getBytesWritten()
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{
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return written;
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}
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}
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