001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License.
018 *
019 */
020package org.apache.directory.api.ldap.codec.actions.modifyRequest;
021
022
023import org.apache.directory.api.asn1.DecoderException;
024import org.apache.directory.api.asn1.ber.grammar.GrammarAction;
025import org.apache.directory.api.asn1.ber.tlv.IntegerDecoder;
026import org.apache.directory.api.asn1.ber.tlv.IntegerDecoderException;
027import org.apache.directory.api.asn1.ber.tlv.TLV;
028import org.apache.directory.api.i18n.I18n;
029import org.apache.directory.api.ldap.codec.api.LdapCodecConstants;
030import org.apache.directory.api.ldap.codec.api.LdapMessageContainer;
031import org.apache.directory.api.ldap.codec.decorators.ModifyRequestDecorator;
032import org.apache.directory.api.util.Strings;
033import org.slf4j.Logger;
034import org.slf4j.LoggerFactory;
035
036
037/**
038 * The action used to store the ModificationRequest operation type
039 * <pre>
040 * ModifyRequest ::= [APPLICATION 6] SEQUENCE {
041 *     ...
042 *     modification SEQUENCE OF SEQUENCE {
043 *         operation  ENUMERATED {
044 *             ...
045 * </pre>
046 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
047 */
048public class StoreOperationType extends GrammarAction<LdapMessageContainer<ModifyRequestDecorator>>
049{
050    /** The logger */
051    private static final Logger LOG = LoggerFactory.getLogger( StoreOperationType.class );
052
053    /** Speedup for logs */
054    private static final boolean IS_DEBUG = LOG.isDebugEnabled();
055
056
057    /**
058     * Instantiates a new action.
059     */
060    public StoreOperationType()
061    {
062        super( "Store Modify request operation type" );
063    }
064
065
066    /**
067     * {@inheritDoc}
068     */
069    public void action( LdapMessageContainer<ModifyRequestDecorator> container ) throws DecoderException
070    {
071        ModifyRequestDecorator modifyRequestDecorator = container.getMessage();
072
073        TLV tlv = container.getCurrentTLV();
074
075        // Decode the operation type
076        int operation = 0;
077
078        try
079        {
080            operation = IntegerDecoder.parse( tlv.getValue(), 0, 2 );
081        }
082        catch ( IntegerDecoderException ide )
083        {
084            String msg = I18n.err( I18n.ERR_04082, Strings.dumpBytes( tlv.getValue().getData() ) );
085            LOG.error( msg );
086
087            // This will generate a PROTOCOL_ERROR
088            throw new DecoderException( msg, ide );
089        }
090
091        // Store the current operation.
092        modifyRequestDecorator.setCurrentOperation( operation );
093
094        if ( IS_DEBUG )
095        {
096            switch ( operation )
097            {
098                case LdapCodecConstants.OPERATION_ADD:
099                    LOG.debug( "Modification operation : ADD" );
100                    break;
101
102                case LdapCodecConstants.OPERATION_DELETE:
103                    LOG.debug( "Modification operation : DELETE" );
104                    break;
105
106                case LdapCodecConstants.OPERATION_REPLACE:
107                    LOG.debug( "Modification operation : REPLACE" );
108                    break;
109
110                default:
111                    LOG.debug( "Modification operation : UNKNOWN" );
112            }
113        }
114    }
115}