/*
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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
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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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
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying 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 2008 Sun Microsystems, Inc.
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* Portions copyright 2013 ForgeRock AS.
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*/
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package org.opends.server.core;
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import static org.opends.messages.CoreMessages.*;
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import static org.opends.server.config.ConfigConstants.*;
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import static org.opends.server.loggers.debug.DebugLogger.debugEnabled;
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import static org.opends.server.loggers.debug.DebugLogger.getTracer;
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import static org.opends.server.util.StaticUtils.stackTraceToSingleLineString;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.util.Collection;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map.Entry;
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import org.opends.messages.Message;
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import org.opends.server.api.CompressedSchema;
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import org.opends.server.loggers.debug.DebugTracer;
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import org.opends.server.protocols.asn1.ASN1;
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import org.opends.server.protocols.asn1.ASN1Reader;
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import org.opends.server.protocols.asn1.ASN1Writer;
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import org.opends.server.types.ByteString;
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import org.opends.server.types.DebugLogLevel;
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import org.opends.server.types.DirectoryException;
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/**
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* This class provides a default implementation of a compressed schema manager
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* that will store the schema definitions in a binary file
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* (config/schematokens.dat).
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*/
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public final class DefaultCompressedSchema extends CompressedSchema
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{
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/**
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* The tracer object for the debug logger.
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*/
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private static final DebugTracer TRACER = getTracer();
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// Synchronizes calls to save.
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private final Object saveLock = new Object();
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/**
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* Creates a new instance of this compressed schema manager.
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*/
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public DefaultCompressedSchema()
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{
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load();
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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protected void storeAttribute(final byte[] encodedAttribute,
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final String attributeName, final Collection<String> attributeOptions)
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throws DirectoryException
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{
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save();
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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protected void storeObjectClasses(final byte[] encodedObjectClasses,
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final Collection<String> objectClassNames) throws DirectoryException
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{
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save();
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}
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/**
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* Loads the compressed schema information from disk.
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*/
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private void load()
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{
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FileInputStream inputStream = null;
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try
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{
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// Determine the location of the compressed schema data file. It should
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// be in the config directory with a name of "schematokens.dat". If that
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// file doesn't exist, then don't do anything.
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final String path = DirectoryServer.getInstanceRoot() + File.separator
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+ CONFIG_DIR_NAME + File.separator + COMPRESSED_SCHEMA_FILE_NAME;
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if (!new File(path).exists())
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{
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return;
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}
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inputStream = new FileInputStream(path);
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final ASN1Reader reader = ASN1.getReader(inputStream);
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// The first element in the file should be a sequence of object class
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// sets. Each object class set will itself be a sequence of octet
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// strings, where the first one is the token and the remaining elements
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// are the names of the associated object classes.
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reader.readStartSequence();
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while (reader.hasNextElement())
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{
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reader.readStartSequence();
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final byte[] encodedObjectClasses = reader.readOctetString()
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.toByteArray();
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final List<String> objectClassNames = new LinkedList<String>();
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while (reader.hasNextElement())
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{
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objectClassNames.add(reader.readOctetStringAsString());
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}
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reader.readEndSequence();
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loadObjectClasses(encodedObjectClasses, objectClassNames);
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}
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reader.readEndSequence();
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// The second element in the file should be an integer element that holds
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// the value to use to initialize the object class counter.
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reader.readInteger(); // No longer used.
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// The third element in the file should be a sequence of attribute
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// description components. Each attribute description component will
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// itself be a sequence of octet strings, where the first one is the
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// token, the second is the attribute name, and all remaining elements are
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// the attribute options.
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reader.readStartSequence();
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while (reader.hasNextElement())
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{
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reader.readStartSequence();
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final byte[] encodedAttribute = reader.readOctetString().toByteArray();
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final String attributeName = reader.readOctetStringAsString();
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final List<String> attributeOptions = new LinkedList<String>();
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while (reader.hasNextElement())
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{
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attributeOptions.add(reader.readOctetStringAsString());
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}
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reader.readEndSequence();
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loadAttribute(encodedAttribute, attributeName, attributeOptions);
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}
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reader.readEndSequence();
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// The fourth element in the file should be an integer element that holds
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// the value to use to initialize the attribute description counter.
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reader.readInteger(); // No longer used.
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}
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catch (final Exception e)
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{
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, e);
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}
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// FIXME -- Should we do something else here?
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throw new RuntimeException(e);
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}
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finally
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{
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try
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{
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if (inputStream != null)
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{
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inputStream.close();
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}
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}
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catch (final Exception e)
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{
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, e);
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}
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}
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}
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}
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/**
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* Writes the compressed schema information to disk.
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*
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* @throws DirectoryException
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* If a problem occurs while writing the updated information.
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*/
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private void save() throws DirectoryException
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{
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synchronized (saveLock)
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{
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FileOutputStream outputStream = null;
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try
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{
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// Determine the location of the "live" compressed schema data file, and
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// then append ".tmp" to get the name of the temporary file that we will
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// use.
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final String path = DirectoryServer.getInstanceRoot() + File.separator
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+ CONFIG_DIR_NAME + File.separator + COMPRESSED_SCHEMA_FILE_NAME;
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final String tempPath = path + ".tmp";
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outputStream = new FileOutputStream(tempPath);
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final ASN1Writer writer = ASN1.getWriter(outputStream);
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// The first element in the file should be a sequence of object class
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// sets. Each object class set will itself be a sequence of octet
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// strings, where the first one is the token and the remaining elements
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// are the names of the associated object classes.
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writer.writeStartSequence();
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int ocCounter = 1;
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for (final Entry<byte[], Collection<String>> mapEntry :
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getAllObjectClasses())
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{
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writer.writeStartSequence();
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writer.writeOctetString(ByteString.wrap(mapEntry.getKey()));
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final Collection<String> objectClassNames = mapEntry.getValue();
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for (final String ocName : objectClassNames)
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{
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writer.writeOctetString(ocName);
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}
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writer.writeEndSequence();
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ocCounter++;
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}
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writer.writeEndSequence();
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// The second element in the file should be an integer element that
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// holds the value to use to initialize the object class counter.
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writer.writeInteger(ocCounter); // No longer used.
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// The third element in the file should be a sequence of attribute
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// description components. Each attribute description component will
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// itself be a sequence of octet strings, where the first one is the
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// token, the second is the attribute name, and all remaining elements
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// are the attribute options.
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writer.writeStartSequence();
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int adCounter = 1;
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for (final Entry<byte[], Entry<String, Collection<String>>> mapEntry :
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getAllAttributes())
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{
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writer.writeStartSequence();
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writer.writeOctetString(ByteString.wrap(mapEntry.getKey()));
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writer.writeOctetString(mapEntry.getValue().getKey());
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for (final String option : mapEntry.getValue().getValue())
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{
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writer.writeOctetString(option);
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}
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writer.writeEndSequence();
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adCounter++;
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}
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writer.writeEndSequence();
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// The fourth element in the file should be an integer element that
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// holds the value to use to initialize the attribute description
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// counter.
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writer.writeInteger(adCounter); // No longer used.
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// Close the writer and swing the temp file into place.
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outputStream.close();
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final File liveFile = new File(path);
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final File tempFile = new File(tempPath);
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if (liveFile.exists())
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{
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final File saveFile = new File(liveFile.getAbsolutePath() + ".save");
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if (saveFile.exists())
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{
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saveFile.delete();
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}
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liveFile.renameTo(saveFile);
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}
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tempFile.renameTo(liveFile);
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}
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catch (final Exception e)
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{
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, e);
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}
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final Message message = ERR_COMPRESSEDSCHEMA_CANNOT_WRITE_UPDATED_DATA
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.get(stackTraceToSingleLineString(e));
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throw new DirectoryException(
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DirectoryServer.getServerErrorResultCode(), message, e);
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}
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finally
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{
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try
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{
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if (outputStream != null)
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{
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outputStream.close();
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}
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}
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catch (final Exception e)
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{
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, e);
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}
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}
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}
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}
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}
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}
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