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 2010-2012 UnboundID Corp.
026 */
027 package com.unboundid.directory.sdk.ds.scripting;
028
029
030
031 import java.math.BigInteger;
032 import java.util.List;
033 import java.util.Set;
034
035 import com.unboundid.directory.sdk.common.internal.Reconfigurable;
036 import com.unboundid.directory.sdk.common.operation.AddRequest;
037 import com.unboundid.directory.sdk.common.operation.AddResult;
038 import com.unboundid.directory.sdk.common.operation.DeleteRequest;
039 import com.unboundid.directory.sdk.common.operation.DeleteResult;
040 import com.unboundid.directory.sdk.common.operation.ModifyRequest;
041 import com.unboundid.directory.sdk.common.operation.ModifyResult;
042 import com.unboundid.directory.sdk.common.operation.ModifyDNRequest;
043 import com.unboundid.directory.sdk.common.operation.ModifyDNResult;
044 import com.unboundid.directory.sdk.common.types.CompletedOperationContext;
045 import com.unboundid.directory.sdk.common.types.Entry;
046 import com.unboundid.directory.sdk.ds.config.ChangeSubscriptionHandlerConfig;
047 import com.unboundid.directory.sdk.ds.internal.DirectoryServerExtension;
048 import com.unboundid.directory.sdk.ds.types.ChangeSubscription;
049 import com.unboundid.directory.sdk.ds.types.DirectoryServerContext;
050 import com.unboundid.directory.sdk.proxy.internal.DirectoryProxyServerExtension;
051 import com.unboundid.directory.sdk.sync.internal.SynchronizationServerExtension;
052 import com.unboundid.ldap.sdk.LDAPException;
053 import com.unboundid.ldap.sdk.ResultCode;
054 import com.unboundid.util.Extensible;
055 import com.unboundid.util.ThreadSafety;
056 import com.unboundid.util.ThreadSafetyLevel;
057 import com.unboundid.util.args.ArgumentException;
058 import com.unboundid.util.args.ArgumentParser;
059
060
061
062 /**
063 * This class defines an API that must be implemented by scripted extensions
064 * which receive notification of changes of interest processed within the
065 * server. The server may be configured with one or more change subscriptions,
066 * which use criteria to identify the types of changes that should be made
067 * available to change subscription handlers. Each change subscription handler
068 * may be configured either to be notified only for changes matching a specific
069 * set of change subscriptions, or for changes matching the criteria for any
070 * subscription defined in the server. This is handled automatically by the
071 * server, so individual change subscription handler implementations do not need
072 * to attempt to perform that filtering on their own. However, they may perform
073 * additional processing if desired to further narrow the set of changes to be
074 * processed.
075 * <BR>
076 * <H2>Configuring Groovy-Scripted Change Subscription Handlers</H2>
077 * In order to configure a scripted change subscription handler based on this
078 * API and written in the Groovy scripting language, use a command like:
079 * <PRE>
080 * dsconfig create-change-subscription-handler \
081 * --handler-name "<I>{handler-name}</I>" \
082 * --type groovy-scripted \
083 * --set enabled:true \
084 * --set "script-class:<I>{class-name}</I>" \
085 * --set "script-argument:<I>{name=value}</I>"
086 * </PRE>
087 * where "<I>{handler-name}</I>" is the name to use for the change subscription
088 * handler instance, "<I>{class-name}</I>" is the fully-qualified name of the
089 * Groovy class written using this API, and "<I>{name=value}</I>" represents
090 * name-value pairs for any arguments to provide to the change subscription
091 * handler. If multiple arguments should be provided to the change subscription
092 * handler, then the "<CODE>--set script-argument:<I>{name=value}</I></CODE>"
093 * option should be provided multiple times.
094 *
095 * @see com.unboundid.directory.sdk.ds.api.ChangeSubscriptionHandler
096 */
097 @Extensible()
098 @DirectoryServerExtension()
099 @DirectoryProxyServerExtension(appliesToLocalContent=true,
100 appliesToRemoteContent=false)
101 @SynchronizationServerExtension(appliesToLocalContent=true,
102 appliesToSynchronizedContent=false)
103 @ThreadSafety(level=ThreadSafetyLevel.INTERFACE_THREADSAFE)
104 public abstract class ScriptedChangeSubscriptionHandler
105 implements Reconfigurable<ChangeSubscriptionHandlerConfig>
106 {
107 /**
108 * Creates a new instance of this change subscription handler. All change
109 * subscription handler implementations must include a default constructor,
110 * but any initialization should generally be done in the
111 * {@code initializeChangeSubscriptionHandler} method.
112 */
113 public ScriptedChangeSubscriptionHandler()
114 {
115 // No implementation is required.
116 }
117
118
119
120 /**
121 * {@inheritDoc}
122 */
123 public void defineConfigArguments(final ArgumentParser parser)
124 throws ArgumentException
125 {
126 // No arguments will be allowed by default.
127 }
128
129
130
131 /**
132 * Initializes this change subscription handler.
133 *
134 * @param serverContext A handle to the server context for the server in
135 * which this extension is running.
136 * @param config The general configuration for this change
137 * subscription handler.
138 * @param parser The argument parser which has been initialized from
139 * the configuration for this change subscription
140 * handler.
141 *
142 * @throws LDAPException If a problem occurs while initializing this change
143 * subscription handler.
144 */
145 public void initializeChangeSubscriptionHandler(
146 final DirectoryServerContext serverContext,
147 final ChangeSubscriptionHandlerConfig config,
148 final ArgumentParser parser)
149 throws LDAPException
150 {
151 // No initialization will be performed by default.
152 }
153
154
155
156 /**
157 * Performs any cleanup which may be necessary when this change subscription
158 * handler is to be taken out of service.
159 */
160 public void finalizeChangeSubscriptionHandler()
161 {
162 // No implementation is required.
163 }
164
165
166
167 /**
168 * {@inheritDoc}
169 */
170 public boolean isConfigurationAcceptable(
171 final ChangeSubscriptionHandlerConfig config,
172 final ArgumentParser parser,
173 final List<String> unacceptableReasons)
174 {
175 // No extended validation will be performed.
176 return true;
177 }
178
179
180
181 /**
182 * {@inheritDoc}
183 */
184 public ResultCode applyConfiguration(
185 final ChangeSubscriptionHandlerConfig config,
186 final ArgumentParser parser,
187 final List<String> adminActionsRequired,
188 final List<String> messages)
189 {
190 // By default, no configuration changes will be applied. If there are any
191 // arguments, then add an admin action message indicating that the extension
192 // needs to be restarted for any changes to take effect.
193 if (! parser.getNamedArguments().isEmpty())
194 {
195 adminActionsRequired.add(
196 "No configuration change has actually been applied. The new " +
197 "configuration will not take effect until this change " +
198 "subscription handler is disabled and re-enabled or until " +
199 "the server is restarted.");
200 }
201
202 return ResultCode.SUCCESS;
203 }
204
205
206
207 /**
208 * Performs any processing necessary for an add operation matching the
209 * subscription criteria.
210 *
211 * @param operationContext The context for the add operation.
212 * @param sequenceNumber The sequence number for the change
213 * subscription notification.
214 * @param changeSubscriptions The set of change subscriptions whose criteria
215 * matched the add operation.
216 * @param addRequest Information about the request for the add
217 * operation that was processed.
218 * @param addResult Information about the result for the add
219 * operation that was processed.
220 * @param entry The entry that was added to the server.
221 */
222 public abstract void addOperationProcessed(
223 final CompletedOperationContext operationContext,
224 final BigInteger sequenceNumber,
225 final Set<ChangeSubscription> changeSubscriptions,
226 final AddRequest addRequest,
227 final AddResult addResult, final Entry entry);
228
229
230
231 /**
232 * Performs any processing necessary for a delete operation matching the
233 * subscription criteria.
234 *
235 * @param operationContext The context for the delete operation.
236 * @param sequenceNumber The sequence number for the change
237 * subscription notification.
238 * @param changeSubscriptions The set of change subscriptions whose criteria
239 * matched the delete operation.
240 * @param deleteRequest Information about the request for the delete
241 * operation that was processed.
242 * @param deleteResult Information about the result for the delete
243 * operation that was processed.
244 * @param entry The entry that was removed from the server.
245 */
246 public abstract void deleteOperationProcessed(
247 final CompletedOperationContext operationContext,
248 final BigInteger sequenceNumber,
249 final Set<ChangeSubscription> changeSubscriptions,
250 final DeleteRequest deleteRequest,
251 final DeleteResult deleteResult,
252 final Entry entry);
253
254
255
256 /**
257 * Performs any processing necessary for a modify operation matching the
258 * subscription criteria.
259 *
260 * @param operationContext The context for the modify operation.
261 * @param sequenceNumber The sequence number for the change
262 * subscription notification.
263 * @param changeSubscriptions The set of change subscriptions whose criteria
264 * matched the modify operation.
265 * @param modifyRequest Information about the request for the modify
266 * operation that was processed.
267 * @param modifyResult Information about the result for the modify
268 * operation that was processed.
269 * @param oldEntry The entry as it appeared before the changes
270 * were applied.
271 * @param newEntry The entry as it appeared immediately after the
272 * changes were applied.
273 */
274 public abstract void modifyOperationProcessed(
275 final CompletedOperationContext operationContext,
276 final BigInteger sequenceNumber,
277 final Set<ChangeSubscription> changeSubscriptions,
278 final ModifyRequest modifyRequest,
279 final ModifyResult modifyResult,
280 final Entry oldEntry, final Entry newEntry);
281
282
283
284 /**
285 * Performs any processing necessary for a modify DN operation matching the
286 * subscription criteria.
287 *
288 * @param operationContext The context for the modify DN operation.
289 * @param sequenceNumber The sequence number for the change
290 * subscription notification.
291 * @param changeSubscriptions The set of change subscriptions whose criteria
292 * matched the modify DN operation.
293 * @param modifyDNRequest Information about the request for the modify
294 * DN operation that was processed.
295 * @param modifyDNResult Information about the result for the modify DN
296 * operation that was processed.
297 * @param oldEntry The entry as it appeared before being renamed.
298 * @param newEntry The entry as it appeared immediately after
299 * being renamed.
300 */
301 public abstract void modifyDNOperationProcessed(
302 final CompletedOperationContext operationContext,
303 final BigInteger sequenceNumber,
304 final Set<ChangeSubscription> changeSubscriptions,
305 final ModifyDNRequest modifyDNRequest,
306 final ModifyDNResult modifyDNResult,
307 final Entry oldEntry, final Entry newEntry);
308 }