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.proxy.types; 028 029 030 031 import java.util.List; 032 033 import com.unboundid.directory.sdk.common.types.ClientContext; 034 import com.unboundid.directory.sdk.common.types.OperationContext; 035 import com.unboundid.ldap.sdk.DN; 036 import com.unboundid.ldap.sdk.Filter; 037 import com.unboundid.ldap.sdk.LDAPException; 038 import com.unboundid.ldap.sdk.SearchResultEntry; 039 import com.unboundid.ldap.sdk.SearchScope; 040 import com.unboundid.util.NotExtensible; 041 import com.unboundid.util.ObjectPair; 042 import com.unboundid.util.ThreadSafety; 043 import com.unboundid.util.ThreadSafetyLevel; 044 045 046 047 /** 048 * This interface defines a set of methods that may be used to obtain 049 * information about and interact with an entry-balancing request processor and 050 * its component backend sets and servers. 051 */ 052 @NotExtensible() 053 @ThreadSafety(level=ThreadSafetyLevel.INTERFACE_NOT_THREADSAFE) 054 public interface EntryBalancingRequestProcessor 055 { 056 /** 057 * Retrieves the base DN for the entry-balancing request processor. 058 * 059 * @return The base DN for the entry-balancing request processor. 060 */ 061 DN getRequestProcessorBaseDN(); 062 063 064 065 /** 066 * Retrieves the DN of the balancing point for the entry-balancing request 067 * processor. 068 * 069 * @return The DN of the balancing point for the entry-balancing request 070 * processor. 071 */ 072 DN getBalancingPointBaseDN(); 073 074 075 076 /** 077 * Retrieves a list of the backend sets for this entry-balancing request 078 * processor. 079 * 080 * @return A list of the backend sets for this entry-balancing request 081 * processor. 082 */ 083 List<BackendSet> getBackendSets(); 084 085 086 087 /** 088 * Retrieves the backend set in which the entry-balancing global index 089 * believes the entry with the specified DN may exist. 090 * 091 * @param dn The DN of the entry for which to retrieve the global index 092 * hint. 093 * 094 * @return The backend set in which the entry-balancing global index believes 095 * the entry with the specified DN may exist, or {@code null} if the 096 * global index does not have any information that may help locate 097 * the target entry, or if the provided DN is not below the balancing 098 * point. 099 */ 100 BackendSet getGlobalIndexHint(final DN dn); 101 102 103 104 /** 105 * Retrieves the backend set in which the entry-balancing global index 106 * believes the entry with the specified attribute value may exist. The value 107 * is expected to be unique across the entire data set. 108 * 109 * @param attributeType The name or OID of the attribute type of the 110 * attribute for which to retrieve the global index 111 * hint. 112 * @param value The attribute value for which to retrieve the global 113 * index hint. 114 * 115 * @return The backend set in which the entry-balancing global index believes 116 * the entry with the specified attribute value may exist, or 117 * {@code null} if the global index does not have any information 118 * that may help locate the target entry. 119 */ 120 BackendSet getGlobalIndexHint(final String attributeType, final String value); 121 122 123 124 /** 125 * Retrieves the backend set in which the entry-balancing global index 126 * believes the entry with the specified attribute value may exist. The value 127 * is expected to be unique across the entire data set. 128 * 129 * @param attributeType The name or OID of the attribute type of the 130 * attribute for which to retrieve the global index 131 * hint. 132 * @param value The attribute value for which to retrieve the global 133 * index hint. 134 * 135 * @return The backend set in which the entry-balancing global index believes 136 * the entry with the specified attribute value may exist, or 137 * {@code null} if the global index does not have any information 138 * that may help locate the target entry. 139 */ 140 BackendSet getGlobalIndexHint(final String attributeType, final byte[] value); 141 142 143 144 /** 145 * Retrieves the specified entry from this entry-balancing request processor. 146 * If a broadcast is needed to find the entry, it will be done in parallel. 147 * 148 * @param op Information about the operation currently being processed. 149 * This must not be {@code null}. 150 * @param dn The DN of the entry to retrieve. It must not be {@code null}. 151 * If it is at or above the balancing point base DN, then the 152 * backend set from which the entry will be retrieved is 153 * undefined. 154 * 155 * @return An object that pairs the requested entry with information about 156 * the backend set from which it was retrieved, or {@code null} if 157 * the specified entry was not found in any backend set. 158 * 159 * @throws LDAPException If a problem is encountered while making the 160 * determination. 161 */ 162 ObjectPair<SearchResultEntry,BackendSet> getEntry(final OperationContext op, 163 final String dn) 164 throws LDAPException; 165 166 167 168 /** 169 * Performs a search for all entries in this entry-balancing request processor 170 * that match the provided criteria. The search will not be allowed to return 171 * more than 100 entries. 172 * 173 * @param clientContext The client context to use when performing the 174 * search. If this is {@code null}, then an internal 175 * root user will be used to retrieve the entry. If it 176 * is non-{@code null}, then its authorization identity 177 * will be used. 178 * @param baseDN The base DN to use for the search. 179 * @param scope The scope to use for the search. 180 * @param filter The filter to use for the search. 181 * @param attributes The set of attributes to request to be included in 182 * the entries that are returned. If this is 183 * {@code null} or empty, then all user attributes will 184 * be requested. 185 * 186 * @return A list containing each matching entry paired with the backend set 187 * from which it was retrieved. 188 * 189 * @throws LDAPException If a problem is encountered while performing the 190 * search. 191 */ 192 List<ObjectPair<SearchResultEntry,BackendSet>> search( 193 final ClientContext clientContext, final String baseDN, 194 final SearchScope scope, final Filter filter, 195 final String... attributes) 196 throws LDAPException; 197 }