/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2006-2008 Sun Microsystems, Inc.
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* Portions Copyright 2014 ForgeRock AS
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*/
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package org.opends.server.util;
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import java.io.OutputStream;
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import org.forgerock.util.Reject;
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import org.forgerock.i18n.slf4j.LocalizedLogger;
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/**
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* This class defines a simple {@code OutputStream} object that can be used to
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* write all messages to multiple targets at the same time, much like the UNIX
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* "tee" command. Note that this class will never throw any exceptions
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*/
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@org.opends.server.types.PublicAPI(
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stability=org.opends.server.types.StabilityLevel.UNCOMMITTED,
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mayInstantiate=true,
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mayExtend=false,
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mayInvoke=true)
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public final class MultiOutputStream
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extends OutputStream
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{
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private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
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// The set of target output streams to which all messages will be written;
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private final OutputStream[] targetStreams;
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/**
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* Creates a new {@code MultiOutputStream} object that will write all messages
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* to all of the target streams.
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*
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* @param targetStreams The set of print streams to which all messages
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* should be written. This must not be {@code null},
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* nor may it contain any {@code null} elements.
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*/
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public MultiOutputStream(OutputStream... targetStreams)
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{
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Reject.ifNull(targetStreams);
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this.targetStreams = targetStreams;
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}
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/**
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* Closes all of the underlying output streams.
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*/
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public void close()
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{
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for (OutputStream s : targetStreams)
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{
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try
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{
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s.close();
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}
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catch (Exception e)
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{
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logger.traceException(e);
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}
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}
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}
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/**
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* Flushes all of the underlying output streams.
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*/
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public void flush()
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{
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for (OutputStream s : targetStreams)
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{
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try
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{
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s.flush();
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}
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catch (Exception e)
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{
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logger.traceException(e);
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}
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}
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}
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/**
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* Writes the contents of the provided byte array to all of the underlying
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* output streams.
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*
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* @param b The byte array containing the data to be written.
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*/
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public void write(byte[] b)
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{
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for (OutputStream s : targetStreams)
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{
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try
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{
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s.write(b);
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}
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catch (Exception e)
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{
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logger.traceException(e);
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}
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}
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}
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/**
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* Writes the specified portion of the provided byte array to all of the
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* underlying output streams.
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*
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* @param b The byte array containing the data to be written.
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* @param off The position at which the data to write begins in the array.
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* @param len The number of bytes to b written.
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*/
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public void write(byte[] b, int off, int len)
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{
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for (OutputStream s : targetStreams)
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{
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try
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{
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s.write(b, off, len);
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}
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catch (Exception e)
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{
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logger.traceException(e);
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}
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}
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}
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/**
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* Writes the specified byte to the set of target output streams.
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*
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* @param b The byte to be written.
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*/
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public void write(int b)
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{
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for (OutputStream s : targetStreams)
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{
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try
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{
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s.write(b);
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}
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catch (Exception e)
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{
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logger.traceException(e);
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}
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}
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}
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}
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