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 2013-2014 UnboundID Corp.
026 */
027 package com.unboundid.directory.sdk.ds.api;
028
029
030
031 import java.util.Collections;
032 import java.util.List;
033 import java.util.Map;
034
035 import com.unboundid.directory.sdk.broker.internal.IdentityBrokerExtension;
036 import com.unboundid.directory.sdk.common.internal.ExampleUsageProvider;
037 import com.unboundid.directory.sdk.common.internal.Reconfigurable;
038 import com.unboundid.directory.sdk.common.internal.UnboundIDExtension;
039 import com.unboundid.directory.sdk.common.types.OperationContext;
040 import com.unboundid.directory.sdk.ds.config.RequestCriteriaConfig;
041 import com.unboundid.directory.sdk.ds.types.DirectoryServerContext;
042 import com.unboundid.directory.sdk.ds.internal.DirectoryServerExtension;
043 import com.unboundid.directory.sdk.metrics.internal.MetricsEngineExtension;
044 import com.unboundid.directory.sdk.proxy.internal.DirectoryProxyServerExtension;
045 import com.unboundid.directory.sdk.sync.internal.SynchronizationServerExtension;
046 import com.unboundid.ldap.sdk.LDAPException;
047 import com.unboundid.ldap.sdk.ResultCode;
048 import com.unboundid.util.Extensible;
049 import com.unboundid.util.ThreadSafety;
050 import com.unboundid.util.ThreadSafetyLevel;
051 import com.unboundid.util.args.ArgumentException;
052 import com.unboundid.util.args.ArgumentParser;
053
054
055
056 /**
057 * This class defines an API that must be implemented by extensions which can
058 * be used to classify client requests.
059 * <BR>
060 * <H2>Configuring Request Criteria</H2>
061 * In order to configure a request criteria object created using this API, use a
062 * command like:
063 * <PRE>
064 * dsconfig create-request-criteria \
065 * --criteria-name "<I>{criteria-name}</I>" \
066 * --type third-party \
067 * --set enabled:true \
068 * --set "extension-class:<I>{class-name}</I>" \
069 * --set "extension-argument:<I>{name=value}</I>"
070 * </PRE>
071 * where "<I>{criteria-name}</I>" is the name to use for the request criteria
072 * instance, "<I>{class-name}</I>" is the fully-qualified name of the Java class
073 * that extends {@code com.unboundid.directory.sdk.ds.api.RequestCriteria}, and
074 * "<I>{name=value}</I>" represents name-value pairs for any arguments to
075 * provide to the request criteria. If multiple arguments should be provided to
076 * the request criteria instance, then the
077 * "<CODE>--set extension-argument:<I>{name=value}</I></CODE>" option should be
078 * provided multiple times.
079 */
080 @Extensible()
081 @DirectoryServerExtension()
082 @DirectoryProxyServerExtension(appliesToLocalContent=true,
083 appliesToRemoteContent=true)
084 @SynchronizationServerExtension(appliesToLocalContent=true,
085 appliesToSynchronizedContent=false)
086 @MetricsEngineExtension()
087 @IdentityBrokerExtension()
088 @ThreadSafety(level=ThreadSafetyLevel.INTERFACE_THREADSAFE)
089 public abstract class RequestCriteria
090 implements UnboundIDExtension,
091 Reconfigurable<RequestCriteriaConfig>,
092 ExampleUsageProvider
093 {
094 /**
095 * Creates a new instance of this request criteria. All request criteria
096 * implementations must include a default constructor, but any initialization
097 * should generally be done in the {@code initializeRequestCriteria} method.
098 */
099 public RequestCriteria()
100 {
101 // No implementation is required.
102 }
103
104
105
106 /**
107 * {@inheritDoc}
108 */
109 public abstract String getExtensionName();
110
111
112
113 /**
114 * {@inheritDoc}
115 */
116 public abstract String[] getExtensionDescription();
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 request criteria.
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 request criteria.
137 * @param parser The argument parser which has been initialized from
138 * the configuration for this request criteria.
139 *
140 * @throws LDAPException If a problem occurs while initializing this request
141 * criteria.
142 */
143 public void initializeRequestCriteria(
144 final DirectoryServerContext serverContext,
145 final RequestCriteriaConfig config,
146 final ArgumentParser parser)
147 throws LDAPException
148 {
149 // No initialization will be performed by default.
150 }
151
152
153
154 /**
155 * {@inheritDoc}
156 */
157 public boolean isConfigurationAcceptable(
158 final RequestCriteriaConfig config,
159 final ArgumentParser parser,
160 final List<String> unacceptableReasons)
161 {
162 // No extended validation will be performed by default.
163 return true;
164 }
165
166
167
168 /**
169 * {@inheritDoc}
170 */
171 public ResultCode applyConfiguration(final RequestCriteriaConfig config,
172 final ArgumentParser parser,
173 final List<String> adminActionsRequired,
174 final List<String> messages)
175 {
176 // By default, no configuration changes will be applied. If there are any
177 // arguments, then add an admin action message indicating that the extension
178 // needs to be restarted for any changes to take effect.
179 if (! parser.getNamedArguments().isEmpty())
180 {
181 adminActionsRequired.add(
182 "No configuration change has actually been applied. The new " +
183 "configuration will not take effect until this request " +
184 "criteria is disabled and re-enabled or until the server is " +
185 "restarted.");
186 }
187
188 return ResultCode.SUCCESS;
189 }
190
191
192
193 /**
194 * Performs any cleanup which may be necessary when this request criteria
195 * is to be taken out of service.
196 */
197 public void finalizeRequestCriteria()
198 {
199 // No implementation is required.
200 }
201
202
203
204 /**
205 * Indicates whether the provided operation matches the criteria for this
206 * request criteria object.
207 *
208 * @param o The operation for which to make the determination.
209 *
210 * @return {@code true} if the provided operation matches the criteria for
211 * this request criteria object, or {@code false} if not.
212 */
213 public abstract boolean matches(final OperationContext o);
214
215
216
217 /**
218 * {@inheritDoc}
219 */
220 public Map<List<String>,String> getExamplesArgumentSets()
221 {
222 return Collections.emptyMap();
223 }
224 }