001/*
002 * Copyright 2016-2017 UnboundID Corp.
003 * All Rights Reserved.
004 */
005/*
006 * Copyright (C) 2016-2017 UnboundID Corp.
007 *
008 * This program is free software; you can redistribute it and/or modify
009 * it under the terms of the GNU General Public License (GPLv2 only)
010 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
011 * as published by the Free Software Foundation.
012 *
013 * This program is distributed in the hope that it will be useful,
014 * but WITHOUT ANY WARRANTY; without even the implied warranty of
015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
016 * GNU General Public License for more details.
017 *
018 * You should have received a copy of the GNU General Public License
019 * along with this program; if not, see <http://www.gnu.org/licenses>.
020 */
021package com.unboundid.ldap.sdk.experimental;
022
023
024
025import java.util.ArrayList;
026import java.util.Collections;
027import java.util.LinkedHashMap;
028import java.util.List;
029
030import com.unboundid.ldap.sdk.Attribute;
031import com.unboundid.ldap.sdk.DeleteRequest;
032import com.unboundid.ldap.sdk.Entry;
033import com.unboundid.ldap.sdk.LDAPException;
034import com.unboundid.ldap.sdk.OperationType;
035import com.unboundid.ldap.sdk.ResultCode;
036import com.unboundid.util.NotMutable;
037import com.unboundid.util.StaticUtils;
038import com.unboundid.util.ThreadSafety;
039import com.unboundid.util.ThreadSafetyLevel;
040
041import static com.unboundid.ldap.sdk.experimental.ExperimentalMessages.*;
042
043
044
045/**
046 * This class represents an entry that holds information about a delete
047 * operation processed by an LDAP server, as per the specification described in
048 * draft-chu-ldap-logschema-00.
049 */
050@NotMutable()
051@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
052public final class DraftChuLDAPLogSchema00DeleteEntry
053       extends DraftChuLDAPLogSchema00Entry
054{
055  /**
056   * The name of the attribute used to hold information about attributes
057   * contained in the entry that was deleted.
058   */
059  public static final String ATTR_DELETED_ATTRIBUTE = "reqOld";
060
061
062
063  /**
064   * The serial version UID for this serializable class.
065   */
066  private static final long serialVersionUID = -4326357861964770357L;
067
068
069
070  // The list of deleted attributes, if available.
071  private final List<Attribute> deletedAttributes;
072
073
074
075  /**
076   * Creates a new instance of this delete access log entry from the provided
077   * entry.
078   *
079   * @param  entry  The entry used to create this delete access log entry.
080   *
081   * @throws  LDAPException  If the provided entry cannot be decoded as a valid
082   *                         delete access log entry as per the specification
083   *                         contained in draft-chu-ldap-logschema-00.
084   */
085  public DraftChuLDAPLogSchema00DeleteEntry(final Entry entry)
086         throws LDAPException
087  {
088    super(entry, OperationType.DELETE);
089
090    final byte[][] deletedAttrBytes =
091         entry.getAttributeValueByteArrays(ATTR_DELETED_ATTRIBUTE);
092    if ((deletedAttrBytes == null) || (deletedAttrBytes.length == 0))
093    {
094      deletedAttributes = Collections.emptyList();
095      return;
096    }
097
098    final LinkedHashMap<String,List<Attribute>> attrMap =
099         new LinkedHashMap<String,List<Attribute>>(deletedAttrBytes.length);
100    for (final byte[] attrBytes : deletedAttrBytes)
101    {
102      int colonPos = -1;
103      for (int i=0; i < attrBytes.length; i++)
104      {
105        if (attrBytes[i] == ':')
106        {
107          colonPos = i;
108          break;
109        }
110      }
111
112      if (colonPos < 0)
113      {
114        throw new LDAPException(ResultCode.DECODING_ERROR,
115             ERR_LOGSCHEMA_DECODE_DELETE_OLD_ATTR_MISSING_COLON.get(
116                  entry.getDN(), ATTR_DELETED_ATTRIBUTE,
117                  StaticUtils.toUTF8String(attrBytes)));
118      }
119      else if (colonPos == 0)
120      {
121        throw new LDAPException(ResultCode.DECODING_ERROR,
122             ERR_LOGSCHEMA_DECODE_DELETE_OLD_ATTR_MISSING_ATTR.get(
123                  entry.getDN(), ATTR_DELETED_ATTRIBUTE,
124                  StaticUtils.toUTF8String(attrBytes)));
125      }
126
127      if ((colonPos == (attrBytes.length - 1)) ||
128          (attrBytes[colonPos+1] != ' '))
129      {
130        throw new LDAPException(ResultCode.DECODING_ERROR,
131             ERR_LOGSCHEMA_DECODE_DELETE_OLD_ATTR_MISSING_SPACE.get(
132                  entry.getDN(), ATTR_DELETED_ATTRIBUTE,
133                  StaticUtils.toUTF8String(attrBytes)));
134      }
135
136      final String attrName =
137           StaticUtils.toUTF8String(attrBytes, 0, colonPos);
138      final String lowerName = StaticUtils.toLowerCase(attrName);
139
140      List<Attribute> attrList = attrMap.get(lowerName);
141      if (attrList == null)
142      {
143        attrList = new ArrayList<Attribute>(10);
144        attrMap.put(lowerName, attrList);
145      }
146
147      final byte[] attrValue = new byte[attrBytes.length - colonPos - 2];
148      if (attrValue.length > 0)
149      {
150        System.arraycopy(attrBytes, colonPos + 2, attrValue, 0,
151             attrValue.length);
152      }
153
154      attrList.add(new Attribute(attrName, attrValue));
155    }
156
157    final ArrayList<Attribute> oldAttributes =
158         new ArrayList<Attribute>(attrMap.size());
159    for (final List<Attribute> attrList : attrMap.values())
160    {
161      if (attrList.size() == 1)
162      {
163        oldAttributes.addAll(attrList);
164      }
165      else
166      {
167        final byte[][] valueArray = new byte[attrList.size()][];
168        for (int i=0; i < attrList.size(); i++)
169        {
170          valueArray[i] = attrList.get(i).getValueByteArray();
171        }
172        oldAttributes.add(new Attribute(attrList.get(0).getName(), valueArray));
173      }
174    }
175
176    deletedAttributes = Collections.unmodifiableList(oldAttributes);
177  }
178
179
180
181  /**
182   * Retrieves a list of the attributes from the entry that was deleted, if
183   * available.
184   *
185   * @return  A list of the attributes from the entry that was deleted, or an
186   *          empty list if no deleted attribute information was included in the
187   *          access log entry.
188   */
189  public List<Attribute> getDeletedAttributes()
190  {
191    return deletedAttributes;
192  }
193
194
195
196  /**
197   * Retrieves an {@code DeleteRequest} created from this delete access log
198   * entry.
199   *
200   * @return  The {@code DeleteRequest} created from this delete access log
201   *          entry.
202   */
203  public DeleteRequest toDeleteRequest()
204  {
205    return new DeleteRequest(getTargetEntryDN(), getRequestControlArray());
206  }
207}