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.server.ldap.handlers.extended; 021 022 023import java.util.Collections; 024import java.util.HashSet; 025import java.util.Set; 026 027import org.apache.directory.api.ldap.extras.extended.startTransaction.StartTransactionRequest; 028import org.apache.directory.api.ldap.extras.extended.startTransaction.StartTransactionResponse; 029import org.apache.directory.api.ldap.extras.extended.startTransaction.StartTransactionResponseImpl; 030import org.apache.directory.api.ldap.model.message.ExtendedRequest; 031import org.apache.directory.api.ldap.model.message.ExtendedResponse; 032import org.apache.directory.server.core.api.CoreSession; 033import org.apache.directory.server.ldap.ExtendedOperationHandler; 034import org.apache.directory.server.ldap.LdapServer; 035import org.apache.directory.server.ldap.LdapSession; 036import org.slf4j.Logger; 037import org.slf4j.LoggerFactory; 038 039import jdbm.helper.Conversion; 040 041 042/** 043 * An handler to manage the StartTransaction extended request operation 044 * 045 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 046 */ 047public class StartTransactionHandler implements ExtendedOperationHandler<ExtendedRequest, ExtendedResponse> 048{ 049 private static final Logger LOG = LoggerFactory.getLogger( StartTransactionHandler.class ); 050 public static final Set<String> EXTENSION_OIDS; 051 052 static 053 { 054 Set<String> set = new HashSet<>( 2 ); 055 set.add( StartTransactionRequest.EXTENSION_OID ); 056 EXTENSION_OIDS = Collections.unmodifiableSet( set ); 057 } 058 059 060 /** 061 * {@inheritDoc} 062 */ 063 public String getOid() 064 { 065 return StartTransactionRequest.EXTENSION_OID; 066 } 067 068 069 /** 070 * {@inheritDoc} 071 */ 072 public void handleExtendedOperation( LdapSession session, ExtendedRequest req ) throws Exception 073 { 074 LOG.debug( "StartTransaction requested" ); 075 076 // We need to create a new transaction ID for the current session. 077 // If the current session is already processing a transaction, we will return an error 078 CoreSession coreSession = session.getCoreSession(); 079 long transactionId = coreSession.beginSessionTransaction(); 080 081 StartTransactionResponse startTransactionResponse = new StartTransactionResponseImpl( 082 req.getMessageId(), Conversion.convertToByteArray( transactionId ) ); 083 084 // Store the StartTransaction request name in the response, to be able to 085 // encode the response properly. 086 // Kurt Zeilenga should have set a responseName to make it easier to 087 // implement in RFC 5805 :/ 088 startTransactionResponse.setResponseName( StartTransactionRequest.EXTENSION_OID ); 089 090 // write the response 091 session.getIoSession().write( startTransactionResponse ); 092 } 093 094 095 /** 096 * {@inheritDoc} 097 */ 098 public Set<String> getExtensionOids() 099 { 100 return EXTENSION_OIDS; 101 } 102 103 104 /** 105 * {@inheritDoc} 106 */ 107 public void setLdapServer( LdapServer ldapServer ) 108 { 109 } 110}