2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2019-2021 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
11 * http://www.apache.org/licenses/LICENSE-2.0
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14 * distributed under the License is distributed on an "AS IS" BASIS,
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16 * See the License for the specific language governing permissions and
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19 * SPDX-License-Identifier: Apache-2.0
20 * ============LICENSE_END=========================================================
23 package org.onap.policy.xacml.pdp.application.optimization;
25 import com.att.research.xacml.api.Advice;
26 import com.att.research.xacml.api.AttributeAssignment;
27 import com.att.research.xacml.api.Identifier;
28 import com.att.research.xacml.api.XACML3;
29 import com.att.research.xacml.util.XACMLPolicyWriter;
30 import java.io.ByteArrayOutputStream;
31 import java.io.IOException;
32 import java.util.ArrayList;
33 import java.util.Arrays;
34 import java.util.Collection;
35 import java.util.HashMap;
36 import java.util.List;
38 import oasis.names.tc.xacml._3_0.core.schema.wd_17.AdviceExpressionType;
39 import oasis.names.tc.xacml._3_0.core.schema.wd_17.AdviceExpressionsType;
40 import oasis.names.tc.xacml._3_0.core.schema.wd_17.AnyOfType;
41 import oasis.names.tc.xacml._3_0.core.schema.wd_17.AttributeAssignmentExpressionType;
42 import oasis.names.tc.xacml._3_0.core.schema.wd_17.AttributeValueType;
43 import oasis.names.tc.xacml._3_0.core.schema.wd_17.EffectType;
44 import oasis.names.tc.xacml._3_0.core.schema.wd_17.ObjectFactory;
45 import oasis.names.tc.xacml._3_0.core.schema.wd_17.PolicyType;
46 import org.apache.commons.lang3.StringUtils;
47 import org.onap.policy.models.decisions.concepts.DecisionResponse;
48 import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
49 import org.onap.policy.pdp.xacml.application.common.ToscaDictionary;
50 import org.onap.policy.pdp.xacml.application.common.ToscaPolicyConversionException;
51 import org.onap.policy.pdp.xacml.application.common.ToscaPolicyTranslatorUtils;
52 import org.onap.policy.pdp.xacml.application.common.std.StdMatchableTranslator;
53 import org.slf4j.Logger;
54 import org.slf4j.LoggerFactory;
56 public class OptimizationPdpApplicationTranslator extends StdMatchableTranslator {
57 private static final Logger LOGGER = LoggerFactory.getLogger(OptimizationPdpApplicationTranslator.class);
59 private static final String OPTIMIZATION_POLICYTYPE_SUBSCRIBER =
60 "onap.policies.optimization.service.SubscriberPolicy";
62 private static final String FIELD_SUBSCRIBER_ROLE = "subscriberRole";
63 private static final String FIELD_PROV_STATUS = "provStatus";
65 @SuppressWarnings("unchecked")
67 public Object convertPolicy(ToscaPolicy toscaPolicy) throws ToscaPolicyConversionException {
69 // Have our superclass do the work - NOTE we are assuming
70 // that we are getting a PolicyType converted.
72 PolicyType policy = (PolicyType) super.convertPolicy(toscaPolicy);
74 // Check if this is the subscriber policy
76 if (OPTIMIZATION_POLICYTYPE_SUBSCRIBER.equals(toscaPolicy.getType())) {
78 // Ensure the policy has the subscriber properties
80 Map<String, Object> subscriberProperties = (Map<String, Object>) toscaPolicy.getProperties()
81 .get("subscriberProperties");
82 if (subscriberProperties == null) {
83 throw new ToscaPolicyConversionException("Missing subscriberProperties from subscriber policy");
86 // Add subscriber name to the target so the policy
87 // only matches for the given subscriberName.
89 addSubscriberNameIntoTarget(policy, subscriberProperties);
91 // Add subscriber advice
93 policy.setAdviceExpressions(generateSubscriberAdvice(subscriberProperties));
95 // Dump our revised policy out
97 try (var os = new ByteArrayOutputStream()) {
98 XACMLPolicyWriter.writePolicyFile(os, policy);
99 LOGGER.info("{}", os);
100 } catch (IOException e) {
101 LOGGER.error("Failed to create byte array stream", e);
108 protected void scanAdvice(Collection<Advice> advice, DecisionResponse decisionResponse) {
109 for (Advice adv : advice) {
110 if (! ToscaDictionary.ID_ADVICE_OPTIMIZATION_SUBSCRIBER.equals(adv.getId())) {
111 LOGGER.warn("Unknown advice id {}", adv.getId());
115 // Get the existing advice if any, we are appending to it.
117 Map<String, Object> mapAdvice = decisionResponse.getAdvice();
119 // If there's nothing, create a map
121 if (mapAdvice == null) {
122 mapAdvice = new HashMap<>();
124 for (AttributeAssignment assignment : adv.getAttributeAssignments()) {
125 if (ToscaDictionary.ID_ADVICE_OPTIMIZATION_SUBSCRIBER_ROLE.equals(assignment.getAttributeId())) {
126 addValuesToMap(assignment.getAttributeValue().getValue(), FIELD_SUBSCRIBER_ROLE, mapAdvice);
127 } else if (ToscaDictionary.ID_ADVICE_OPTIMIZATION_SUBSCRIBER_STATUS.equals(
128 assignment.getAttributeId())) {
129 addValuesToMap(assignment.getAttributeValue().getValue(), FIELD_PROV_STATUS, mapAdvice);
132 if (! mapAdvice.isEmpty()) {
133 decisionResponse.setAdvice(mapAdvice);
138 @SuppressWarnings("unchecked")
139 private static void addValuesToMap(Object values, String key, Map<String, Object> mapAdvice) {
140 if (values instanceof Collection) {
141 List<String> valueList = new ArrayList<>();
142 ((Collection<Object>) values).forEach(val -> valueList.add(val.toString()));
143 mapAdvice.put(key, valueList);
145 mapAdvice.put(key, values.toString());
150 private static PolicyType addSubscriberNameIntoTarget(PolicyType policy,
151 Map<String, Object> subscriberProperties) throws ToscaPolicyConversionException {
153 // Iterate through all the subscriber names
155 var anyOf = new AnyOfType();
156 for (Object subscriberName : getPropAsList(subscriberProperties, "subscriberName")) {
158 var match = ToscaPolicyTranslatorUtils.buildMatchTypeDesignator(
159 XACML3.ID_FUNCTION_STRING_EQUAL,
161 XACML3.ID_DATATYPE_STRING,
162 ToscaDictionary.ID_SUBJECT_OPTIMIZATION_SUBSCRIBER_NAME,
163 XACML3.ID_SUBJECT_CATEGORY_ACCESS_SUBJECT);
165 anyOf.getAllOf().add(ToscaPolicyTranslatorUtils.buildAllOf(match));
170 policy.getTarget().getAnyOf().add(anyOf);
172 // Return for convenience
177 private static AdviceExpressionsType generateSubscriberAdvice(Map<String, Object> subscriberProperties)
178 throws ToscaPolicyConversionException {
180 // Create our subscriber advice expression
182 var adviceExpression = new AdviceExpressionType();
183 adviceExpression.setAppliesTo(EffectType.PERMIT);
184 adviceExpression.setAdviceId(ToscaDictionary.ID_ADVICE_OPTIMIZATION_SUBSCRIBER.stringValue());
186 // Add in subscriber role advice attributes
188 generateSubscriberAdviceAttributes(
190 ToscaDictionary.ID_ADVICE_OPTIMIZATION_SUBSCRIBER_ROLE,
191 getPropAsList(subscriberProperties, FIELD_SUBSCRIBER_ROLE));
193 // Get the provision status
195 generateSubscriberAdviceAttributes(
197 ToscaDictionary.ID_ADVICE_OPTIMIZATION_SUBSCRIBER_STATUS,
198 getPropAsList(subscriberProperties, FIELD_PROV_STATUS));
200 // Add it to the overall expressions
202 var adviceExpressions = new AdviceExpressionsType();
203 adviceExpressions.getAdviceExpression().add(adviceExpression);
205 // Done return our advice expressions
207 return adviceExpressions;
210 private static void generateSubscriberAdviceAttributes(AdviceExpressionType adviceExpression,
211 Identifier attributeId, Collection<Object> adviceAttribute) {
212 for (Object attribute : adviceAttribute) {
213 var value = new AttributeValueType();
214 value.setDataType(XACML3.ID_DATATYPE_STRING.stringValue());
215 value.getContent().add(attribute.toString());
217 var assignment = new AttributeAssignmentExpressionType();
218 assignment.setAttributeId(attributeId.stringValue());
219 assignment.setCategory(XACML3.ID_SUBJECT_CATEGORY_ACCESS_SUBJECT.stringValue());
220 assignment.setExpression(new ObjectFactory().createAttributeValue(value));
222 adviceExpression.getAttributeAssignmentExpression().add(assignment);
226 @SuppressWarnings("unchecked")
227 private static List<Object> getPropAsList(Map<String, Object> properties, String fieldName)
228 throws ToscaPolicyConversionException {
230 Object raw = properties.get(fieldName);
231 if (raw == null || StringUtils.isBlank(raw.toString())) {
232 throw new ToscaPolicyConversionException("Missing " + fieldName);
235 return raw instanceof Collection ? (List<Object>) raw : Arrays.asList(raw);