| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.number; |
| |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.UUID; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import org.apache.directory.api.ldap.model.constants.SchemaConstants; |
| import org.apache.directory.api.ldap.model.entry.Attribute; |
| import org.apache.directory.api.ldap.model.entry.DefaultEntry; |
| import org.apache.directory.api.ldap.model.entry.DefaultModification; |
| import org.apache.directory.api.ldap.model.entry.Entry; |
| import org.apache.directory.api.ldap.model.entry.Modification; |
| import org.apache.directory.api.ldap.model.entry.ModificationOperation; |
| import org.apache.directory.api.ldap.model.exception.LdapException; |
| import org.apache.directory.api.ldap.model.name.Dn; |
| import org.apache.directory.api.ldap.model.schema.MatchingRule; |
| import org.apache.directory.server.core.api.DirectoryService; |
| import org.apache.directory.server.core.api.entry.ClonedServerEntry; |
| import org.apache.directory.server.core.api.interceptor.BaseInterceptor; |
| import org.apache.directory.server.core.api.interceptor.context.AddOperationContext; |
| import org.apache.directory.server.core.api.interceptor.context.LookupOperationContext; |
| import org.apache.directory.server.core.api.interceptor.context.ModifyOperationContext; |
| import org.apache.directory.server.core.api.partition.Partition; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * An interceptor to increment any attribute with integer matching rule |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class NumberIncrementingInterceptor extends BaseInterceptor |
| { |
| /** A {@link Logger} for this class */ |
| private static final Logger LOG = LoggerFactory.getLogger( NumberIncrementingInterceptor.class ); |
| |
| /** the DN of the holder entry */ |
| private Dn numberHolder; |
| |
| /** a map of integer attribute and it's present value */ |
| private Map<String, AtomicInteger> incMap = new HashMap<String, AtomicInteger>(); |
| |
| |
| @Override |
| public void init( DirectoryService directoryService ) throws LdapException |
| { |
| super.init( directoryService ); |
| |
| numberHolder = new Dn( schemaManager, "ou=autoIncDataHolder,ou=system" ); |
| |
| Partition systemPartition = directoryService.getSystemPartition(); |
| |
| LookupOperationContext lookupContext = new LookupOperationContext( directoryService.getAdminSession(), numberHolder, SchemaConstants.ALL_ATTRIBUTES_ARRAY ); |
| Entry entry = systemPartition.lookup( lookupContext ); |
| |
| if ( entry == null ) |
| { |
| //FIXME make sure this entry addition gets replicated |
| entry = new DefaultEntry( schemaManager ); |
| entry.setDn( numberHolder ); |
| entry.add( SchemaConstants.OBJECT_CLASS_AT, SchemaConstants.ORGANIZATIONAL_UNIT_OC ); |
| entry.add( SchemaConstants.OBJECT_CLASS_AT, SchemaConstants.EXTENSIBLE_OBJECT_OC ); |
| entry.add( SchemaConstants.OU_AT, numberHolder.getRdn().getValue().getString() ); |
| entry.add( SchemaConstants.ENTRY_UUID_AT, UUID.randomUUID().toString() ); |
| entry.add( SchemaConstants.ENTRY_CSN_AT, directoryService.getCSN().toString() ); |
| |
| AddOperationContext addContext = new AddOperationContext( directoryService.getAdminSession() ); |
| addContext.setDn( numberHolder ); |
| addContext.setEntry( new ClonedServerEntry( entry ) ); |
| |
| LOG.debug( "Adding container entry to hold numeric attribute values" ); |
| systemPartition.add( addContext ); |
| } |
| else |
| { |
| for ( Attribute at : entry ) |
| { |
| MatchingRule mr = at.getAttributeType().getEquality(); |
| if ( mr != null ) |
| { |
| if ( SchemaConstants.INTEGER_MATCH_MR_OID.equals( mr.getOid() ) ) |
| { |
| int t = Integer.parseInt( at.getString() ); |
| incMap.put( at.getId(), new AtomicInteger( t ) ); |
| } |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void add( AddOperationContext addContext ) throws LdapException |
| { |
| LOG.debug( ">>> Entering into the number incrementing interceptor, addRequest" ); |
| |
| if ( addContext.isReplEvent() ) |
| { |
| // Nope, go on. |
| next( addContext ); |
| return; |
| } |
| |
| Entry entry = addContext.getEntry(); |
| |
| List<Attribute> lst = new ArrayList<Attribute>(); |
| |
| for( String oid : incMap.keySet() ) |
| { |
| Attribute at = entry.get( oid ); |
| if( at != null ) |
| { |
| lst.add( at ); |
| } |
| } |
| |
| if( lst.isEmpty() ) |
| { |
| next( addContext ); |
| return; |
| } |
| |
| for( Attribute at : lst ) |
| { |
| int stored = incMap.get( at.getId() ).get(); |
| at.clear(); |
| at.add( String.valueOf( stored + 1 ) ); |
| } |
| |
| // Ok, we are golden. |
| next( addContext ); |
| |
| ModifyOperationContext bindModCtx = new ModifyOperationContext( directoryService.getAdminSession() ); |
| bindModCtx.setDn( numberHolder ); |
| bindModCtx.setPushToEvtInterceptor( true ); |
| |
| List<Modification> mods = new ArrayList<Modification>(); |
| |
| for( Attribute at : lst ) |
| { |
| AtomicInteger ai = incMap.get( at.getId() ); |
| ai.set( ai.get() + 1 ); |
| |
| Modification mod = new DefaultModification(); |
| mod.setOperation( ModificationOperation.REPLACE_ATTRIBUTE ); |
| mod.setAttribute( at ); |
| |
| mods.add( mod ); |
| } |
| |
| bindModCtx.setModItems( mods ); |
| |
| directoryService.getPartitionNexus().modify( bindModCtx ); |
| |
| LOG.debug( "Successfully updated numeric attribute in {}", numberHolder ); |
| } |
| } |