| /* |
| * 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.api.changelog; |
| |
| |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.directory.api.ldap.model.ldif.LdifEntry; |
| import org.apache.directory.api.ldap.model.schema.SchemaManager; |
| import org.apache.directory.server.core.api.LdapPrincipal; |
| import org.apache.directory.server.core.api.LdapPrincipalSerializer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * A helper class which serialize and deserialize a ChangeLogEvent. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public final class ChangeLogEventSerializer |
| { |
| /** The LoggerFactory used by this class */ |
| protected static final Logger LOG = LoggerFactory.getLogger( ChangeLogEventSerializer.class ); |
| |
| |
| /** |
| * Private constructor. |
| */ |
| private ChangeLogEventSerializer() |
| { |
| } |
| |
| |
| /** |
| * Serializes a ChangeLogEvent instance. |
| * |
| * @param event The ChangeLogEvent instance to serialize |
| * @param out The stream into which we will write the serialized instance |
| * @throws IOException If the stream can't be written |
| */ |
| public static void serialize( ChangeLogEvent event, ObjectOutput out ) throws IOException |
| { |
| // The date the change has been created, "yyyyMMddHHmmss'Z'" |
| out.writeUTF( event.getZuluTime() ); |
| |
| // The committer's Principal |
| LdapPrincipalSerializer.serialize( event.getCommitterPrincipal(), out ); |
| |
| // The revision |
| out.writeLong( event.getRevision() ); |
| |
| // The forward LDIF |
| event.getForwardLdif().writeExternal( out ); |
| |
| // The reverse LDIFs number |
| int nbReverses = event.getReverseLdifs().size(); |
| out.writeInt( nbReverses ); |
| |
| for ( LdifEntry reverseLdif : event.getReverseLdifs() ) |
| { |
| reverseLdif.writeExternal( out ); |
| } |
| |
| out.flush(); |
| } |
| |
| |
| /** |
| * Deserializes a ChangeLogEvent instance. |
| * |
| * @param schemaManager The SchemaManager (can be null) |
| * @param in The input stream from which the ChengaLogEvent is read |
| * @return a deserialized ChangeLogEvent |
| * @throws IOException If we had an issue processing the stream |
| */ |
| public static ChangeLogEvent deserialize( SchemaManager schemaManager, ObjectInput in ) |
| throws IOException |
| { |
| // The date the change has been created, "yyyyMMddHHmmss'Z'" |
| String zuluTime = in.readUTF(); |
| |
| // The committer's Principal |
| LdapPrincipal committerPrincipal = LdapPrincipalSerializer.deserialize( schemaManager, in ); |
| |
| // The revision |
| long revision = in.readLong(); |
| |
| // The forward LDIF |
| LdifEntry forwardEntry = new LdifEntry(); |
| |
| try |
| { |
| forwardEntry.readExternal( in ); |
| } |
| catch ( ClassNotFoundException cnfe ) |
| { |
| IOException ioe = new IOException( cnfe.getMessage() ); |
| ioe.initCause( cnfe ); |
| throw ioe; |
| } |
| |
| // The reverse LDIFs number |
| int nbReverses = in.readInt(); |
| |
| List<LdifEntry> reverses = new ArrayList<>( nbReverses ); |
| |
| for ( int i = 0; i < nbReverses; i++ ) |
| { |
| LdifEntry reverseEntry = new LdifEntry(); |
| |
| try |
| { |
| reverseEntry.readExternal( in ); |
| } |
| catch ( ClassNotFoundException cnfe ) |
| { |
| IOException ioe = new IOException( cnfe.getMessage() ); |
| ioe.initCause( cnfe ); |
| throw ioe; |
| } |
| |
| reverses.add( reverseEntry ); |
| } |
| |
| return new ChangeLogEvent( revision, zuluTime, committerPrincipal, forwardEntry, reverses ); |
| } |
| } |