/*
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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.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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/** Closes all of the underlying output streams. */
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@Override
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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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/** Flushes all of the underlying output streams. */
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@Override
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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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@Override
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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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@Override
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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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@Override
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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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