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Posted to commits@directory.apache.org by er...@apache.org on 2006/05/03 23:43:37 UTC
svn commit: r399448 - in
/directory/trunks/apacheds/core/src/main/java/org/apache/directory/server/core/trigger:
TriggerService.java TriggerSpecCache.java
Author: ersiner
Date: Wed May 3 14:43:34 2006
New Revision: 399448
URL: http://svn.apache.org/viewcvs?rev=399448&view=rev
Log:
Implemented a Trigger Specification Cache. Needs testing tough.
Added:
directory/trunks/apacheds/core/src/main/java/org/apache/directory/server/core/trigger/TriggerSpecCache.java
Modified:
directory/trunks/apacheds/core/src/main/java/org/apache/directory/server/core/trigger/TriggerService.java
Modified: directory/trunks/apacheds/core/src/main/java/org/apache/directory/server/core/trigger/TriggerService.java
URL: http://svn.apache.org/viewcvs/directory/trunks/apacheds/core/src/main/java/org/apache/directory/server/core/trigger/TriggerService.java?rev=399448&r1=399447&r2=399448&view=diff
==============================================================================
--- directory/trunks/apacheds/core/src/main/java/org/apache/directory/server/core/trigger/TriggerService.java (original)
+++ directory/trunks/apacheds/core/src/main/java/org/apache/directory/server/core/trigger/TriggerService.java Wed May 3 14:43:34 2006
@@ -60,6 +60,8 @@
private static final String TRIGGER_SUBENTRIES_ATTR = "triggerSubentries";
+ /** a triggerSpecCache that responds to add, delete, and modify attempts */
+ private TriggerSpecCache triggerSpecCache;
/** a normalizing Trigger Specification parser */
private TriggerSpecificationParser triggerParser;
/** a normalizing Distinguished Name parser */
@@ -82,6 +84,7 @@
public void init( DirectoryServiceConfiguration dirServCfg, InterceptorConfiguration intCfg ) throws NamingException
{
super.init( dirServCfg, intCfg );
+ triggerSpecCache = new TriggerSpecCache( dirServCfg );
attrRegistry = dirServCfg.getGlobalRegistries().getAttributeTypeRegistry();
triggerParser = new TriggerSpecificationParser( new ConcreteNameComponentNormalizer( attrRegistry ) );
dnParser = new DnParser( new ConcreteNameComponentNormalizer( attrRegistry ) );
Added: directory/trunks/apacheds/core/src/main/java/org/apache/directory/server/core/trigger/TriggerSpecCache.java
URL: http://svn.apache.org/viewcvs/directory/trunks/apacheds/core/src/main/java/org/apache/directory/server/core/trigger/TriggerSpecCache.java?rev=399448&view=auto
==============================================================================
--- directory/trunks/apacheds/core/src/main/java/org/apache/directory/server/core/trigger/TriggerSpecCache.java (added)
+++ directory/trunks/apacheds/core/src/main/java/org/apache/directory/server/core/trigger/TriggerSpecCache.java Wed May 3 14:43:34 2006
@@ -0,0 +1,238 @@
+/*
+ * Copyright 2006 The Apache Software Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+package org.apache.directory.server.core.trigger;
+
+
+import java.text.ParseException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Hashtable;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+
+import javax.naming.Name;
+import javax.naming.NamingEnumeration;
+import javax.naming.NamingException;
+import javax.naming.directory.Attribute;
+import javax.naming.directory.Attributes;
+import javax.naming.directory.ModificationItem;
+import javax.naming.directory.SearchControls;
+import javax.naming.directory.SearchResult;
+
+import org.apache.directory.server.core.DirectoryServiceConfiguration;
+import org.apache.directory.server.core.partition.DirectoryPartitionNexus;
+import org.apache.directory.server.core.schema.AttributeTypeRegistry;
+import org.apache.directory.server.core.schema.ConcreteNameComponentNormalizer;
+import org.apache.directory.shared.ldap.filter.ExprNode;
+import org.apache.directory.shared.ldap.filter.SimpleNode;
+import org.apache.directory.shared.ldap.name.DnParser;
+import org.apache.directory.shared.ldap.name.LdapName;
+import org.apache.directory.shared.ldap.name.NameComponentNormalizer;
+import org.apache.directory.shared.ldap.trigger.TriggerSpecification;
+import org.apache.directory.shared.ldap.trigger.TriggerSpecificationParser;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+/**
+ * A cache for Trigger Specifications which responds to specific events to
+ * perform cache house keeping as trigger subentries are added, deleted
+ * and modified.
+ *
+ * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
+ * @version $Rev:$
+ */
+public class TriggerSpecCache
+{
+ /** the attribute id for prescriptive trigger: prescriptiveTrigger */
+ private static final String PRESCRIPTIVE_TRIGGER_ATTR = "prescriptiveTrigger";
+ /** the attribute id for an object class: objectClass */
+ private static final String OC_ATTR = "objectClass";
+ /** the object class for trigger subentries: triggerSubentry */
+ private static final String TRIGGER_SUBENTRY_OC = "triggerSubentry";
+
+ /** the logger for this class */
+ private static final Logger log = LoggerFactory.getLogger( TriggerSpecCache.class );
+
+ /** cloned startup environment properties we use for subentry searching */
+ private final Hashtable env;
+ /** a map of strings to TriggerSpecification collections */
+ private final Map triggerSpecs = new HashMap();
+ /** a handle on the partition nexus */
+ private final DirectoryPartitionNexus nexus;
+ /** a normalizing TriggerSpecification parser */
+ private final TriggerSpecificationParser triggerSpecParser;
+ /** a normalizing DN parser */
+ private final DnParser dnParser;
+
+
+ /**
+ * Creates a TriggerSpecification cache.
+ *
+ * @param dirServCfg the context factory configuration for the server
+ */
+ public TriggerSpecCache( DirectoryServiceConfiguration dirServCfg ) throws NamingException
+ {
+ this.nexus = dirServCfg.getPartitionNexus();
+ AttributeTypeRegistry registry = dirServCfg.getGlobalRegistries().getAttributeTypeRegistry();
+ NameComponentNormalizer ncn = new ConcreteNameComponentNormalizer( registry );
+ triggerSpecParser = new TriggerSpecificationParser( ncn );
+ dnParser = new DnParser( ncn );
+ env = ( Hashtable ) dirServCfg.getEnvironment().clone();
+ initialize();
+ }
+
+
+ private void initialize() throws NamingException
+ {
+ // search all naming contexts for trigger subentenries
+ // generate TriggerSpecification arrays for each subentry
+ // add that subentry to the hash
+ Iterator suffixes = nexus.listSuffixes( true );
+ while ( suffixes.hasNext() )
+ {
+ String suffix = ( String ) suffixes.next();
+ Name baseDn = new LdapName( suffix );
+ ExprNode filter = new SimpleNode( OC_ATTR, TRIGGER_SUBENTRY_OC, SimpleNode.EQUALITY );
+ SearchControls ctls = new SearchControls();
+ ctls.setSearchScope( SearchControls.SUBTREE_SCOPE );
+ NamingEnumeration results = nexus.search( baseDn, env, filter, ctls );
+ while ( results.hasMore() )
+ {
+ SearchResult result = ( SearchResult ) results.next();
+ String subentryDn = result.getName();
+ Attribute triggerSpec = result.getAttributes().get( PRESCRIPTIVE_TRIGGER_ATTR );
+ if ( triggerSpec == null )
+ {
+ log.warn( "Found triggerSubentry '" + subentryDn + "' without any " + PRESCRIPTIVE_TRIGGER_ATTR );
+ continue;
+ }
+
+ Name normSubentryName = dnParser.parse( subentryDn );
+ subentryAdded( normSubentryName, result.getAttributes() );
+ }
+ results.close();
+ }
+ }
+
+
+ private boolean hasPrescriptiveTrigger( Attributes entry ) throws NamingException
+ {
+ // only do something if the entry contains prescriptiveTrigger
+ Attribute aci = entry.get( PRESCRIPTIVE_TRIGGER_ATTR );
+ if ( aci == null )
+ {
+ return false;
+ }
+ return true;
+ }
+
+
+ public void subentryAdded( Name normName, Attributes entry ) throws NamingException
+ {
+ // only do something if the entry contains prescriptiveTrigger
+ Attribute triggerSpec = entry.get( PRESCRIPTIVE_TRIGGER_ATTR );
+ if ( !hasPrescriptiveTrigger( entry ) )
+ {
+ return;
+ }
+
+ List subentryTriggerSpecs = new ArrayList();
+ for ( int ii = 0; ii < triggerSpec.size(); ii++ )
+ {
+ TriggerSpecification item = null;
+
+ try
+ {
+ item = triggerSpecParser.parse( ( String ) triggerSpec.get( ii ) );
+ }
+ catch ( ParseException e )
+ {
+ String msg = "TriggerSpecification parser failure on '" + item + "'. Cannnot add Trigger Specificaitons to TriggerSpecCache.";
+ log.warn( msg, e );
+ }
+
+ subentryTriggerSpecs.add( item );
+ }
+ triggerSpecs.put( normName.toString(), subentryTriggerSpecs );
+ }
+
+
+ public void subentryDeleted( Name normName, Attributes entry ) throws NamingException
+ {
+ if ( !hasPrescriptiveTrigger( entry ) )
+ {
+ return;
+ }
+
+ triggerSpecs.remove( normName.toString() );
+ }
+
+
+ public void subentryModified( Name normName, ModificationItem[] mods, Attributes entry ) throws NamingException
+ {
+ if ( !hasPrescriptiveTrigger( entry ) )
+ {
+ return;
+ }
+
+ boolean isTriggerSpecModified = false;
+ for ( int ii = 0; ii < mods.length; ii++ )
+ {
+ isTriggerSpecModified |= mods[ii].getAttribute().contains( PRESCRIPTIVE_TRIGGER_ATTR );
+ }
+ if ( isTriggerSpecModified )
+ {
+ subentryDeleted( normName, entry );
+ subentryAdded( normName, entry );
+ }
+ }
+
+
+ public void subentryModified( Name normName, int modOp, Attributes mods, Attributes entry ) throws NamingException
+ {
+ if ( !hasPrescriptiveTrigger( entry ) )
+ {
+ return;
+ }
+
+ if ( mods.get( PRESCRIPTIVE_TRIGGER_ATTR ) != null )
+ {
+ subentryDeleted( normName, entry );
+ subentryAdded( normName, entry );
+ }
+ }
+
+
+ public List getSubentryTriggerSpecs( String subentryDn )
+ {
+ List subentryTriggerSpecs = ( List ) triggerSpecs.get( subentryDn );
+ if ( subentryTriggerSpecs == null )
+ {
+ return Collections.EMPTY_LIST;
+ }
+ return Collections.unmodifiableList( subentryTriggerSpecs );
+ }
+
+
+ public void subentryRenamed( Name oldName, Name newName )
+ {
+ triggerSpecs.put( newName.toString(), triggerSpecs.remove( oldName.toString() ) );
+ }
+}