2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2019 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
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.
19 * SPDX-License-Identifier: Apache-2.0
20 * ============LICENSE_END=========================================================
23 package org.onap.policy.xacml.pdp.application.guard;
25 import com.att.research.xacml.api.Request;
26 import com.att.research.xacml.api.Response;
27 import com.att.research.xacml.util.XACMLPolicyWriter;
28 import com.google.common.collect.Lists;
30 import java.io.IOException;
31 import java.nio.file.Path;
32 import java.util.Arrays;
33 import java.util.HashMap;
34 import java.util.List;
36 import java.util.Properties;
38 import oasis.names.tc.xacml._3_0.core.schema.wd_17.PolicyType;
40 import org.onap.policy.models.decisions.concepts.DecisionRequest;
41 import org.onap.policy.models.decisions.concepts.DecisionResponse;
42 import org.onap.policy.pdp.xacml.application.common.ToscaPolicyConversionException;
43 import org.onap.policy.pdp.xacml.application.common.XacmlPolicyUtils;
44 import org.onap.policy.pdp.xacml.application.common.std.StdXacmlApplicationServiceProvider;
45 import org.slf4j.Logger;
46 import org.slf4j.LoggerFactory;
49 * This class implements the onap.policies.controlloop.Guard policy implementations.
51 * @author pameladragosh
54 public class GuardPdpApplication extends StdXacmlApplicationServiceProvider {
56 private static final Logger LOGGER = LoggerFactory.getLogger(GuardPdpApplication.class);
57 private static final String STRING_VERSION100 = "1.0.0";
58 private Map<String, String> supportedPolicyTypes = new HashMap<>();
59 private LegacyGuardTranslator translator = new LegacyGuardTranslator();
64 public GuardPdpApplication() {
65 this.supportedPolicyTypes.put("onap.policies.controlloop.guard.FrequencyLimiter", STRING_VERSION100);
66 this.supportedPolicyTypes.put("onap.policies.controlloop.guard.MinMax", STRING_VERSION100);
70 public String applicationName() {
71 return "Guard Application";
75 public List<String> actionDecisionsSupported() {
76 return Arrays.asList("guard");
80 public List<String> supportedPolicyTypes() {
81 return Lists.newArrayList(supportedPolicyTypes.keySet());
85 public boolean canSupportPolicyType(String policyType, String policyTypeVersion) {
87 // For the time being, restrict this if the version isn't known.
88 // Could be too difficult to support changing of versions dynamically.
90 if (! this.supportedPolicyTypes.containsKey(policyType)) {
94 // Must match version exactly
96 return this.supportedPolicyTypes.get(policyType).equals(policyTypeVersion);
100 public void loadPolicies(Map<String, Object> toscaPolicies) {
103 // Convert the policies first
105 List<PolicyType> listPolicies = translator.scanAndConvertPolicies(toscaPolicies);
106 if (listPolicies.isEmpty()) {
107 throw new ToscaPolicyConversionException("Converted 0 policies");
110 // Create a copy of the properties object
112 Properties newProperties = this.getProperties();
114 // Iterate through the policies
116 for (PolicyType newPolicy : listPolicies) {
118 // Construct the filename
120 Path refPath = XacmlPolicyUtils.constructUniquePolicyFilename(newPolicy, this.getDataPath());
122 // Write the policy to disk
123 // Maybe check for an error
125 XACMLPolicyWriter.writePolicyFile(refPath, newPolicy);
127 // Add root policy to properties object
129 XacmlPolicyUtils.addRootPolicy(newProperties, refPath);
132 // Write the properties to disk
134 XacmlPolicyUtils.storeXacmlProperties(newProperties,
135 XacmlPolicyUtils.getPropertiesPath(this.getDataPath()));
139 this.createEngine(newProperties);
140 } catch (IOException | ToscaPolicyConversionException e) {
141 LOGGER.error("Failed to loadPolicies {}", e);
146 public DecisionResponse makeDecision(DecisionRequest request) {
148 // Convert to a XacmlRequest
150 Request xacmlRequest = translator.convertRequest(request);
152 // Now get a decision
154 Response xacmlResponse = this.xacmlDecision(xacmlRequest);
156 // Convert to a DecisionResponse
158 return translator.convertResponse(xacmlResponse);