/*
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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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* Portions Copyright 2006-2007 Sun Microsystems, Inc.
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*/
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package org.opends.server.replication.protocol;
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import static org.opends.server.replication.protocol.OperationContext.*;
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import org.opends.server.core.ModifyOperation;
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import org.opends.server.protocols.asn1.ASN1Exception;
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import org.opends.server.protocols.asn1.ASN1OctetString;
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import org.opends.server.protocols.ldap.LDAPAttribute;
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import org.opends.server.protocols.ldap.LDAPModification;
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import org.opends.server.protocols.asn1.ASN1Element;
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import org.opends.server.protocols.internal.InternalClientConnection;
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import org.opends.server.replication.common.ChangeNumber;
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import org.opends.server.replication.plugin.Historical;
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import org.opends.server.types.Attribute;
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import org.opends.server.types.AttributeType;
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import org.opends.server.types.AttributeUsage;
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import org.opends.server.types.DN;
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import org.opends.server.types.LDAPException;
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import org.opends.server.types.Modification;
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import org.opends.server.types.Operation;
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import org.opends.server.types.RawModification;
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import java.io.UnsupportedEncodingException;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.zip.DataFormatException;
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/**
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* Message used to send Modify information.
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*/
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public class ModifyMsg extends UpdateMessage
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{
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private static final long serialVersionUID = -4905520652801395185L;
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private byte[] encodedMods = null;
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private byte[] encodedMsg = null;
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/**
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* Creates a new Modify message from a ModifyOperation.
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*
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* @param op The operation to use for building the message
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*/
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public ModifyMsg(ModifyOperation op)
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{
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super((OperationContext) op.getAttachment(OperationContext.SYNCHROCONTEXT),
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op.getRawEntryDN().stringValue());
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encodedMods = modsToByte(op.getModifications());
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}
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/**
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* Creates a new Modify message using the provided information.
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*
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* @param changeNumber The ChangeNumber for the operation.
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* @param dn The baseDN of the operation.
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* @param mods The mod of the operation.
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* @param entryuuid The unique id of the entry on which the modification
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* needs to apply.
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*/
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public ModifyMsg(ChangeNumber changeNumber, DN dn, List<Modification> mods,
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String entryuuid)
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{
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super(new ModifyContext(changeNumber, entryuuid),
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dn.toNormalizedString());
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this.encodedMods = modsToByte(mods);
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}
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/**
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* Creates a new Modify message from a byte[].
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*
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* @param in The byte[] from which the operation must be read.
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* @throws DataFormatException If the input byte[] is not a valid modifyMsg
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* @throws UnsupportedEncodingException If UTF8 is not supported by the JVM.
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*/
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public ModifyMsg(byte[] in) throws DataFormatException,
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UnsupportedEncodingException
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{
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super(in);
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encodedMsg = in;
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}
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/**
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* Get the byte array representation of this Message.
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*
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* @return The byte array representation of this Message.
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*/
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@Override
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public byte[] getBytes()
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{
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if (encodedMsg == null)
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{
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try
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{
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encode();
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} catch (UnsupportedEncodingException e)
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{
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// should never happens : TODO : log some error
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return null;
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}
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}
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return encodedMsg;
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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 Operation createOperation(InternalClientConnection connection,
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String newDn)
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throws LDAPException, ASN1Exception, DataFormatException
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{
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if (encodedMods == null)
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{
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decode();
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}
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if (newDn == null)
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newDn = getDn();
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ArrayList<RawModification> ldapmods;
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ArrayList<ASN1Element> mods = null;
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mods = ASN1Element.decodeElements(encodedMods);
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ldapmods = new ArrayList<RawModification>(mods.size());
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for (ASN1Element elem : mods)
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ldapmods.add(LDAPModification.decode(elem));
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ModifyOperation mod = new ModifyOperation(connection,
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InternalClientConnection.nextOperationID(),
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InternalClientConnection.nextMessageID(), null,
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new ASN1OctetString(newDn), ldapmods);
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ModifyContext ctx = new ModifyContext(getChangeNumber(), getUniqueId());
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mod.setAttachment(SYNCHROCONTEXT, ctx);
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return mod;
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}
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/**
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* Encode the Msg information into a byte array.
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*
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* @throws UnsupportedEncodingException If utf8 is not suported.
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*/
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private void encode() throws UnsupportedEncodingException
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{
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/* encode the header in a byte[] large enough to also contain the mods */
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encodedMsg = encodeHeader(MSG_TYPE_MODIFY_REQUEST, encodedMods.length + 1);
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int pos = encodedMsg.length - (encodedMods.length + 1);
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/* add the mods */
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pos = addByteArray(encodedMods, encodedMsg, pos);
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}
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/**
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* Decode the encodedMsg into mods and dn.
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*
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* @throws DataFormatException when the encodedMsg is no a valid modify.
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*/
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private void decode() throws DataFormatException
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{
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int pos = decodeHeader(MSG_TYPE_MODIFY_REQUEST, encodedMsg);
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/* Read the mods : all the remaining bytes but the terminating 0 */
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encodedMods = new byte[encodedMsg.length-pos-1];
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int i =0;
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while (pos<encodedMsg.length-1)
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{
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encodedMods[i++] = encodedMsg[pos++];
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}
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}
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/**
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* Encode an ArrayList of Modification into a byte[] suitable
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* for storage in a database or send on the network.
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*
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* @param mods the ArrayList of Modification to be encoded.
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*/
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private byte[] modsToByte(List<Modification> mods)
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{
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ArrayList<ASN1Element> modsASN1;
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modsASN1 = new ArrayList<ASN1Element>(mods.size());
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for (Modification mod : mods)
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{
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Attribute attr = mod.getAttribute();
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AttributeType type = attr.getAttributeType();
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if (type != null )
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{
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if (AttributeUsage.DSA_OPERATION.equals(type.getUsage()))
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{
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// Attributes with a dsaOperation usage should not be synchronized.
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// skip them.
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continue;
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}
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}
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if (!attr.getAttributeType().equals(Historical.historicalAttrType))
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{
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LDAPModification ldapmod = new LDAPModification(
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mod.getModificationType(), new LDAPAttribute(mod.getAttribute()));
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modsASN1.add(ldapmod.encode());
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}
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}
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return ASN1Element.encodeValue(modsASN1);
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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 String toString()
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{
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return("Modify " + getDn() + " " + getChangeNumber());
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}
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}
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