/*
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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 2006-2010 Sun Microsystems, Inc.
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*/
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package org.opends.server.replication.plugin;
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import java.io.IOException;
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import java.io.OutputStream;
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import org.opends.server.util.ServerConstants;
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/**
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* This class creates an output stream that can be used to export entries
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* to a synchronization domain.
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*/
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public class ReplLDIFOutputStream
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extends OutputStream
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{
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// The number of entries to be exported
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long numEntries;
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// The current number of entries exported
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private long numExportedEntries;
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String entryBuffer = "";
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// The checksum for computing the generation id
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private GenerationIdChecksum checkSum = new GenerationIdChecksum();
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/**
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* Creates a new ReplLDIFOutputStream related to a replication
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* domain.
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*
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* @param numEntries The max number of entry to process.
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*/
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public ReplLDIFOutputStream(long numEntries)
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{
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this.numEntries = numEntries;
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}
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/**
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* {@inheritDoc}
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*/
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public void write(int i) throws IOException
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{
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throw new IOException("Invalid call");
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}
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/**
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* Get the value of the underlying checksum.
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* @return The value of the underlying checksum
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*/
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public long getChecksumValue()
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{
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return checkSum.getValue();
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}
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/**
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* {@inheritDoc}
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*/
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public void write(byte b[], int off, int len) throws IOException
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{
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int endOfEntryIndex;
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int endIndex;
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String ebytes = "";
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ebytes = ebytes.concat(entryBuffer);
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entryBuffer = "";
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ebytes = ebytes.concat(new String(b, off, len));
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endIndex = ebytes.length();
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while (true)
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{
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// if we have the bytes for an entry, let's make an entry and send it
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endOfEntryIndex = ebytes.indexOf(ServerConstants.EOL +
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ServerConstants.EOL);
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if ( endOfEntryIndex >= 0 )
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{
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endOfEntryIndex += 2;
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entryBuffer = ebytes.substring(0, endOfEntryIndex);
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// Send the entry
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if ((numEntries>0) && (getNumExportedEntries() > numEntries))
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{
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// This outputstream has reached the total number
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// of entries to export.
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throw(new IOException());
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}
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// Add the entry bytes to the checksum
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byte[] entryBytes = entryBuffer.getBytes();
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checkSum.update(entryBytes, 0, entryBytes.length);
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numExportedEntries++;
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entryBuffer = "";
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if (endIndex == endOfEntryIndex)
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{
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// no more data to process
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break;
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}
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else
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{
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// loop to the data of the next entry
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ebytes = ebytes.substring(endOfEntryIndex,
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endIndex);
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endIndex = ebytes.length();
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}
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}
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else
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{
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// a next call to us will provide more bytes to make an entry
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entryBuffer = entryBuffer.concat(ebytes);
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break;
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}
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}
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}
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/**
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* Return the number of exported entries.
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* @return the numExportedEntries
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*/
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public long getNumExportedEntries() {
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return numExportedEntries;
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}
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}
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