/*
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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 2006-2008 Sun Microsystems, Inc.
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*/
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package org.opends.server.plugins;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Set;
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import org.opends.messages.Message;
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import org.opends.server.admin.server.ConfigurationChangeListener;
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import org.opends.server.admin.std.meta.PluginCfgDefn;
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import org.opends.server.admin.std.server.LastModPluginCfg;
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import org.opends.server.admin.std.server.PluginCfg;
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import org.opends.server.api.plugin.DirectoryServerPlugin;
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import org.opends.server.api.plugin.PluginType;
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import org.opends.server.api.plugin.PluginResult;
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import org.opends.server.config.ConfigException;
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import org.opends.server.loggers.debug.DebugTracer;
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import org.opends.server.types.*;
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import org.opends.server.types.operation.PreOperationAddOperation;
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import org.opends.server.types.operation.PreOperationModifyOperation;
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import org.opends.server.types.operation.PreOperationModifyDNOperation;
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import static org.opends.messages.PluginMessages.*;
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import static org.opends.server.config.ConfigConstants.*;
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import static org.opends.server.loggers.debug.DebugLogger.*;
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import static org.opends.server.util.TimeThread.*;
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/**
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* This class implements a Directory Server plugin that will add the
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* creatorsName and createTimestamp attributes to an entry whenever it is added
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* to the server, and will add the modifiersName and modifyTimestamp attributes
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* whenever the entry is modified or renamed.
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*/
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public final class LastModPlugin
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extends DirectoryServerPlugin<LastModPluginCfg>
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implements ConfigurationChangeListener<LastModPluginCfg>
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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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// The attribute type for the "createTimestamp" attribute.
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private final AttributeType createTimestampType;
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// The attribute type for the "creatorsName" attribute.
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private final AttributeType creatorsNameType;
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// The attribute type for the "modifiersName" attribute.
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private final AttributeType modifiersNameType;
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// The attribute type for the "modifyTimestamp" attribute.
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private final AttributeType modifyTimestampType;
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// The current configuration for this plugin.
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private LastModPluginCfg currentConfig;
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/**
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* Creates a new instance of this Directory Server plugin. Every plugin must
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* implement a default constructor (it is the only one that will be used to
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* create plugins defined in the configuration), and every plugin constructor
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* must call <CODE>super()</CODE> as its first element.
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*/
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public LastModPlugin()
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{
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super();
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// Get the attribute types for the attributes that we will use. This needs
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// to be done in the constructor in order to make the associated variables
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// "final".
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createTimestampType =
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DirectoryConfig.getAttributeType(OP_ATTR_CREATE_TIMESTAMP_LC, true);
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creatorsNameType =
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DirectoryConfig.getAttributeType(OP_ATTR_CREATORS_NAME_LC, true);
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modifiersNameType =
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DirectoryConfig.getAttributeType(OP_ATTR_MODIFIERS_NAME_LC, true);
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modifyTimestampType =
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DirectoryConfig.getAttributeType(OP_ATTR_MODIFY_TIMESTAMP_LC, true);
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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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public final void initializePlugin(Set<PluginType> pluginTypes,
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LastModPluginCfg configuration)
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throws ConfigException
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{
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currentConfig = configuration;
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configuration.addLastModChangeListener(this);
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// Make sure that the plugin has been enabled for the appropriate types.
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for (PluginType t : pluginTypes)
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{
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switch (t)
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{
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case PRE_OPERATION_ADD:
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case PRE_OPERATION_MODIFY:
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case PRE_OPERATION_MODIFY_DN:
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// These are acceptable.
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break;
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default:
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Message message =
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ERR_PLUGIN_LASTMOD_INVALID_PLUGIN_TYPE.get(t.toString());
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throw new ConfigException(message);
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}
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}
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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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public final void finalizePlugin()
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{
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currentConfig.removeLastModChangeListener(this);
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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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public final PluginResult.PreOperation
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doPreOperation(PreOperationAddOperation addOperation)
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{
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// Create the attribute list for the creatorsName attribute, if appropriate.
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AttributeBuilder builder = new AttributeBuilder(creatorsNameType,
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OP_ATTR_CREATORS_NAME);
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DN creatorDN = addOperation.getAuthorizationDN();
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if (creatorDN == null)
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{
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// This must mean that the operation was performed anonymously.
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// Even so, we still need to update the creatorsName attribute.
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builder.add(AttributeValues.create(creatorsNameType,
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ByteString.empty()));
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}
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else
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{
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builder.add(AttributeValues.create(creatorsNameType,
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ByteString.valueOf(creatorDN.toString())));
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}
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Attribute nameAttr = builder.toAttribute();
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ArrayList<Attribute> nameList = new ArrayList<Attribute>(1);
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nameList.add(nameAttr);
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addOperation.setAttribute(creatorsNameType, nameList);
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// Create the attribute list for the createTimestamp attribute.
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Attribute timeAttr = Attributes.create(createTimestampType,
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OP_ATTR_CREATE_TIMESTAMP,
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AttributeValues.create(createTimestampType,
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ByteString.valueOf(getGMTTime())));
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ArrayList<Attribute> timeList = new ArrayList<Attribute>(1);
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timeList.add(timeAttr);
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addOperation.setAttribute(createTimestampType, timeList);
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// We shouldn't ever need to return a non-success result.
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return PluginResult.PreOperation.continueOperationProcessing();
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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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public final PluginResult.PreOperation
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doPreOperation(PreOperationModifyOperation modifyOperation)
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{
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// Create the modifiersName attribute.
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AttributeBuilder builder = new AttributeBuilder(modifiersNameType,
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OP_ATTR_MODIFIERS_NAME);
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DN modifierDN = modifyOperation.getAuthorizationDN();
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if (modifierDN == null)
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{
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// This must mean that the operation was performed anonymously.
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// Even so, we still need to update the modifiersName attribute.
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builder.add(AttributeValues.create(modifiersNameType,
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ByteString.empty()));
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}
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else
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{
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builder.add(AttributeValues.create(modifiersNameType,
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ByteString.valueOf(modifierDN.toString())));
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}
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Attribute nameAttr = builder.toAttribute();
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try
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{
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modifyOperation.addModification(new Modification(ModificationType.REPLACE,
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nameAttr, true));
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}
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catch (DirectoryException de)
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{
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, de);
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}
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// This should never happen.
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return PluginResult.PreOperation.stopProcessing(
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DirectoryConfig.getServerErrorResultCode(), de.getMessageObject());
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}
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// Create the modifyTimestamp attribute.
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Attribute timeAttr = Attributes.create(modifyTimestampType,
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OP_ATTR_MODIFY_TIMESTAMP,
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AttributeValues.create(modifyTimestampType,
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ByteString.valueOf(getGMTTime())));
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try
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{
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modifyOperation.addModification(new Modification(ModificationType.REPLACE,
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timeAttr, true));
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}
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catch (DirectoryException de)
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{
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, de);
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}
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// This should never happen.
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return PluginResult.PreOperation.stopProcessing(
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DirectoryConfig.getServerErrorResultCode(), de.getMessageObject());
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}
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// We shouldn't ever need to return a non-success result.
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return PluginResult.PreOperation.continueOperationProcessing();
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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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public final PluginResult.PreOperation
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doPreOperation(PreOperationModifyDNOperation modifyDNOperation)
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{
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// Create the modifiersName attribute.
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AttributeBuilder builder = new AttributeBuilder(modifiersNameType,
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OP_ATTR_MODIFIERS_NAME);
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DN modifierDN = modifyDNOperation.getAuthorizationDN();
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if (modifierDN == null)
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{
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// This must mean that the operation was performed anonymously.
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// Even so, we still need to update the modifiersName attribute.
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builder.add(AttributeValues.create(modifiersNameType,
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ByteString.empty()));
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}
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else
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{
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builder.add(AttributeValues.create(modifiersNameType,
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ByteString.valueOf(modifierDN.toString())));
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}
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Attribute nameAttr = builder.toAttribute();
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modifyDNOperation.addModification(new Modification(
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ModificationType.REPLACE, nameAttr, true));
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// Create the modifyTimestamp attribute.
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Attribute timeAttr = Attributes.create(modifyTimestampType,
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OP_ATTR_MODIFY_TIMESTAMP,
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AttributeValues.create(modifyTimestampType,
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ByteString.valueOf(getGMTTime())));
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modifyDNOperation.addModification(new Modification(
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ModificationType.REPLACE, timeAttr, true));
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// We shouldn't ever need to return a non-success result.
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return PluginResult.PreOperation.continueOperationProcessing();
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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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public boolean isConfigurationAcceptable(PluginCfg configuration,
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List<Message> unacceptableReasons)
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{
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LastModPluginCfg cfg = (LastModPluginCfg) configuration;
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return isConfigurationChangeAcceptable(cfg, unacceptableReasons);
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}
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/**
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* {@inheritDoc}
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*/
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public boolean isConfigurationChangeAcceptable(LastModPluginCfg configuration,
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List<Message> unacceptableReasons)
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{
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boolean configAcceptable = true;
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// Ensure that the set of plugin types contains only pre-operation add,
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// pre-operation modify, and pre-operation modify DN.
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for (PluginCfgDefn.PluginType pluginType : configuration.getPluginType())
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{
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switch (pluginType)
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{
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case PREOPERATIONADD:
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case PREOPERATIONMODIFY:
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case PREOPERATIONMODIFYDN:
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// These are acceptable.
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break;
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default:
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Message message = ERR_PLUGIN_LASTMOD_INVALID_PLUGIN_TYPE.get(
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pluginType.toString());
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unacceptableReasons.add(message);
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configAcceptable = false;
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}
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}
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return configAcceptable;
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}
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/**
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* {@inheritDoc}
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*/
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public ConfigChangeResult applyConfigurationChange(
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LastModPluginCfg configuration)
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{
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currentConfig = configuration;
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return new ConfigChangeResult(ResultCode.SUCCESS, false);
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}
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}
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