ECOMP-PDP/src/main/java/org/openecomp/policy/xacml/custom/EcompFunctionDefinitionFactory.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ECOMP-PDP
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20 package org.openecomp.policy.xacml.custom;
  21
  22 import java.lang.reflect.Field;
  23 import java.lang.reflect.Modifier;
  24 import java.util.HashMap;
  25 import java.util.Map;
  26
  27 import org.openecomp.policy.common.logging.flexlogger.FlexLogger;
  28 import org.openecomp.policy.common.logging.flexlogger.Logger;
  29 import org.openecomp.policy.xacml.pdp.std.functions.FunctionDefinitionCustomRegexpMatch;
  30
  31 import com.att.research.xacml.api.Identifier;
  32 import com.att.research.xacml.std.IdentifierImpl;
  33 import com.att.research.xacml.std.datatypes.DataTypes;
  34 import com.att.research.xacmlatt.pdp.policy.FunctionDefinition;
  35 import com.att.research.xacmlatt.pdp.policy.FunctionDefinitionFactory;
  36 import com.att.research.xacmlatt.pdp.std.StdFunctions;
  37
  38 public class EcompFunctionDefinitionFactory extends FunctionDefinitionFactory {
  39         private static Logger logger = FlexLogger.getLogger(EcompFunctionDefinitionFactory.class);
  40         private static Map<Identifier,FunctionDefinition>       mapFunctionDefinitions  = new HashMap<>();
  41         private static boolean                                                          needMapInit                             = true;
  42
  43         public static final Identifier ID_FUNCTION_CUSTOM_REGEXP_MATCH                                          = new IdentifierImpl("org.openecomp.function.regex-match");
  44
  45         private static final FunctionDefinition FD_CUSTOM_REGEXP_MATCH = new FunctionDefinitionCustomRegexpMatch<>(ID_FUNCTION_CUSTOM_REGEXP_MATCH, DataTypes.DT_STRING);
  46
  47         private static void register(FunctionDefinition functionDefinition) {
  48                 mapFunctionDefinitions.put(functionDefinition.getId(), functionDefinition);
  49         }
  50
  51         private static void initMap() {
  52                 if (needMapInit) {
  53                         synchronized(mapFunctionDefinitions) {
  54                                 if (needMapInit) {
  55                                         needMapInit     = false;
  56                                         Field[] declaredFields  = StdFunctions.class.getDeclaredFields();
  57                                         for (Field field : declaredFields) {
  58                                                 if (Modifier.isStatic(field.getModifiers()) &&
  59                                                         field.getName().startsWith(StdFunctions.FD_PREFIX) &&
  60                                                         FunctionDefinition.class.isAssignableFrom(field.getType()) &&
  61                                                         Modifier.isPublic(field.getModifiers())
  62                                                 ) {
  63                                                         try {
  64                                                                 register((FunctionDefinition)(field.get(null)));
  65                                                         } catch (IllegalAccessException ex) {
  66                                                                 logger.error(ex.getMessage() +ex);
  67                                                         }
  68                                                 }
  69                                         }
  70                                         //
  71                                         // Our custom function
  72                                         //
  73                                         //register(FunctionDefinitionCustomRegexpMatch);
  74                                         register(FD_CUSTOM_REGEXP_MATCH);
  75                                 }
  76                         }
  77                 }
  78         }
  79
  80         public EcompFunctionDefinitionFactory() {
  81                 initMap();
  82         }
  83
  84         @Override
  85         public FunctionDefinition getFunctionDefinition(Identifier functionId) {
  86                 return mapFunctionDefinitions.get(functionId);
  87         }
  88 }