| /* |
| * 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.journal; |
| |
| |
| import org.apache.directory.api.ldap.model.exception.LdapException; |
| import org.apache.directory.api.ldap.model.ldif.LdifEntry; |
| import org.apache.directory.server.core.api.DirectoryService; |
| import org.apache.directory.server.core.api.LdapPrincipal; |
| |
| |
| /** |
| * A facade for the Journal subsystem. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public interface Journal |
| { |
| /** |
| * Checks whether or not the Journal has been enabled. |
| * |
| * @return true if the Journal is logging changes, false otherwise |
| */ |
| boolean isEnabled(); |
| |
| |
| /** |
| * Enable or disable the Journal service |
| * @param enabled true to enable the service, false to disable it |
| */ |
| void setEnabled( boolean enabled ); |
| |
| |
| /** |
| * @return The underlying storage |
| */ |
| JournalStore getJournalStore(); |
| |
| |
| /** |
| * Set the underlying storage |
| * @param store The storage |
| */ |
| void setJournalStore( JournalStore store ); |
| |
| |
| /** |
| * Records a change as an LDIF entry. |
| * |
| * @param principal the authorized LDAP principal triggering the change |
| * @param revision the operation revision |
| * @param entry LDIF of the change going to the next state |
| * @throws Exception if there are problems logging the change |
| */ |
| void log( LdapPrincipal principal, long revision, LdifEntry entry ) throws LdapException; |
| |
| |
| /** |
| * Records a ack for a change |
| * |
| * @param revision The change revision which is acked |
| */ |
| void ack( long revision ); |
| |
| |
| /** |
| * Records a nack for a change |
| * |
| * @param revision The change revision which is acked |
| */ |
| void nack( long revision ); |
| |
| |
| /** |
| * Initialize the Journal. |
| * |
| * @param service The associated DirectoryService |
| * @throws Exception If something went wrong |
| */ |
| void init( DirectoryService service ) throws Exception; |
| |
| |
| /** |
| * Destroy the journal service |
| * @throws Exception If something went wrong |
| */ |
| void destroy() throws Exception; |
| |
| |
| /** |
| * @return the rotation |
| */ |
| int getRotation(); |
| |
| |
| /** |
| * @param rotation the rotation to set |
| */ |
| void setRotation( int rotation ); |
| } |