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/*-
* ============LICENSE_START=======================================================
* ONAP-PDP
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* Modified Copyright (C) 2018 Samsung Electronics Co., Ltd.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.xacml.custom;
import com.att.research.xacml.api.Identifier;
import com.att.research.xacml.std.IdentifierImpl;
import com.att.research.xacml.std.datatypes.DataTypes;
import com.att.research.xacmlatt.pdp.policy.FunctionDefinition;
import com.att.research.xacmlatt.pdp.policy.FunctionDefinitionFactory;
import com.att.research.xacmlatt.pdp.std.StdFunctions;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Map;
import org.onap.policy.common.logging.flexlogger.FlexLogger;
import org.onap.policy.common.logging.flexlogger.Logger;
import org.onap.policy.xacml.pdp.std.functions.FunctionDefinitionCustomRegexpMatch;
public class OnapFunctionDefinitionFactory extends FunctionDefinitionFactory {
private static Logger logger = FlexLogger.getLogger(OnapFunctionDefinitionFactory.class);
private static Map<Identifier, FunctionDefinition> mapFunctionDefinitions = new HashMap<>();
private static boolean needMapInit = true;
public static final Identifier ID_FUNCTION_CUSTOM_REGEXP_MATCH =
new IdentifierImpl("org.onap.function.regex-match");
private static final FunctionDefinition FD_CUSTOM_REGEXP_MATCH =
new FunctionDefinitionCustomRegexpMatch<>(ID_FUNCTION_CUSTOM_REGEXP_MATCH, DataTypes.DT_STRING);
private static void register(final FunctionDefinition functionDefinition) {
mapFunctionDefinitions.put(functionDefinition.getId(), functionDefinition);
}
private static void initMap() {
synchronized (mapFunctionDefinitions) {
if (needMapInit) {
needMapInit = false;
final Field[] declaredFields = StdFunctions.class.getDeclaredFields();
for (final Field field : declaredFields) {
registerFunctionDefinition(field);
}
register(FD_CUSTOM_REGEXP_MATCH);
}
}
}
private static void registerFunctionDefinition(Field field) {
if (Modifier.isStatic(field.getModifiers()) && field.getName().startsWith(StdFunctions.FD_PREFIX)
&& FunctionDefinition.class.isAssignableFrom(field.getType())
&& Modifier.isPublic(field.getModifiers())) {
try {
register((FunctionDefinition) (field.get(null)));
} catch (final IllegalAccessException ex) {
logger.error(ex.getMessage() + ex);
}
}
}
public OnapFunctionDefinitionFactory() {
initMap();
}
@Override
public FunctionDefinition getFunctionDefinition(final Identifier functionId) {
return mapFunctionDefinitions.get(functionId);
}
}
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