001 /* 002 * CDDL HEADER START 003 * 004 * The contents of this file are subject to the terms of the 005 * Common Development and Distribution License, Version 1.0 only 006 * (the "License"). You may not use this file except in compliance 007 * with the License. 008 * 009 * You can obtain a copy of the license at 010 * docs/licenses/cddl.txt 011 * or http://www.opensource.org/licenses/cddl1.php. 012 * See the License for the specific language governing permissions 013 * and limitations under the License. 014 * 015 * When distributing Covered Code, include this CDDL HEADER in each 016 * file and include the License file at 017 * docs/licenses/cddl.txt. If applicable, 018 * add the following below this CDDL HEADER, with the fields enclosed 019 * by brackets "[]" replaced with your own identifying information: 020 * Portions Copyright [yyyy] [name of copyright owner] 021 * 022 * CDDL HEADER END 023 * 024 * 025 * Copyright 2010-2014 UnboundID Corp. 026 */ 027 package com.unboundid.directory.sdk.ds.types; 028 029 030 031 import com.unboundid.directory.sdk.common.types.ServerContext; 032 import com.unboundid.directory.sdk.ds.api.BackendInitializationListener; 033 import com.unboundid.ldap.sdk.LDAPException; 034 import com.unboundid.util.NotExtensible; 035 import com.unboundid.util.ThreadSafety; 036 import com.unboundid.util.ThreadSafetyLevel; 037 038 039 040 /** 041 * This interface may be used to obtain information about the Directory Server 042 * (or related product) in which an extension is running. 043 */ 044 @NotExtensible() 045 @ThreadSafety(level=ThreadSafetyLevel.INTERFACE_THREADSAFE) 046 public interface DirectoryServerContext extends ServerContext 047 { 048 /** 049 * Returns an array of all the backends defined in the Directory Server. 050 * 051 * @return an array of {@link BackendContext} objects. This will never 052 * be null. 053 */ 054 BackendContext[] getAllBackends(); 055 056 057 058 /** 059 * Returns the {@link BackendContext} for the backend which should handle the 060 * specified entry, or null if there is no backend that handles this entry. 061 * Note that the entry does not need to exist. If a BackendContext is 062 * returned, it will return true for 063 * {@link BackendContext#handlesEntry(String)} when given the specified DN. 064 * 065 * @param dn The DN for which to make the determination. It must not be 066 * {@code null}. 067 * 068 * @return The {@link BackendContext} for the given entry, or null if no such 069 * backend exists. 070 * 071 * @throws LDAPException If the provided string cannot be parsed as a valid 072 * DN or if a problem is encountered while attempting 073 * to retrieve the BackendContext. 074 */ 075 BackendContext getBackendForEntry(String dn) throws LDAPException; 076 077 078 079 /** 080 * Registers the provided backend initialization listener with the server so 081 * that it may be notified of any backends coming online or going offline. 082 * 083 * @param listener The backend initialization listener to be registered 084 * with the server. It must not be {@code null}. 085 * 086 * @return An object representing the backend initialization listener that 087 * has been registered with the server. 088 */ 089 RegisteredBackendInitializationListener registerBackendInitializationListener( 090 final BackendInitializationListener listener); 091 092 093 094 /** 095 * Deregisters the provided backend initialization listener with the server. 096 * This will have no effect if the provided listener is not registered. 097 * 098 * @param listener The listener to be deregistered. It must not be 099 * {@code null}. 100 */ 101 void deregisterBackendInitializationListener( 102 final RegisteredBackendInitializationListener listener); 103 }