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.pdp.xacml.application.common.std;
25 import com.att.research.xacml.api.Request;
26 import com.att.research.xacml.api.Response;
27 import com.att.research.xacml.api.pdp.PDPEngine;
28 import com.att.research.xacml.api.pdp.PDPEngineFactory;
29 import com.att.research.xacml.api.pdp.PDPException;
30 import com.att.research.xacml.util.FactoryException;
32 import java.io.IOException;
33 import java.io.InputStream;
34 import java.io.OutputStream;
35 import java.nio.file.Files;
36 import java.nio.file.Path;
37 import java.nio.file.Paths;
38 import java.util.Collections;
39 import java.util.List;
41 import java.util.Properties;
43 import org.onap.policy.models.decisions.concepts.DecisionRequest;
44 import org.onap.policy.models.decisions.concepts.DecisionResponse;
45 import org.onap.policy.pdp.xacml.application.common.XacmlApplicationServiceProvider;
46 import org.onap.policy.pdp.xacml.application.common.XacmlPolicyUtils;
47 import org.slf4j.Logger;
48 import org.slf4j.LoggerFactory;
50 public class StdXacmlApplicationServiceProvider implements XacmlApplicationServiceProvider {
52 private static final Logger LOGGER = LoggerFactory.getLogger(StdXacmlApplicationServiceProvider.class);
53 private Path pathForData = null;
54 private Properties pdpProperties = null;
55 private PDPEngine pdpEngine = null;
57 public StdXacmlApplicationServiceProvider() {
62 public String applicationName() {
63 return "Please Override";
67 public List<String> actionDecisionsSupported() {
68 return Collections.emptyList();
72 public void initialize(Path pathForData) {
76 this.pathForData = pathForData;
77 LOGGER.debug("New Path is {}", this.pathForData.toAbsolutePath());
79 // Look for and load the properties object
82 pdpProperties = XacmlPolicyUtils.loadXacmlProperties(XacmlPolicyUtils.getPropertiesPath(pathForData));
83 LOGGER.debug("{}", pdpProperties);
84 } catch (IOException e) {
85 LOGGER.error("{}", e);
90 createEngine(pdpProperties);
94 public List<String> supportedPolicyTypes() {
95 return Collections.emptyList();
99 public boolean canSupportPolicyType(String policyType, String policyTypeVersion) {
104 public void loadPolicies(Map<String, Object> toscaPolicies) {
105 throw new UnsupportedOperationException("Please override and implement loadPolicies");
109 public DecisionResponse makeDecision(DecisionRequest request) {
111 // We should have a standard error response to return
116 protected synchronized PDPEngine getEngine() {
117 return this.pdpEngine;
120 protected synchronized Properties getProperties() {
121 return new Properties(pdpProperties);
124 protected synchronized Path getDataPath() {
129 * Load properties from given file.
131 * @throws IOException If unable to read file
133 protected synchronized Properties loadXacmlProperties() throws IOException {
134 LOGGER.debug("Loading xacml properties {}", pathForData);
135 try (InputStream is = Files.newInputStream(pathForData)) {
136 Properties properties = new Properties();
143 * Stores the XACML Properties to the given file location.
145 * @throws IOException If unable to store the file.
147 protected synchronized void storeXacmlProperties() throws IOException {
148 try (OutputStream os = Files.newOutputStream(pathForData)) {
149 String strComments = "#";
150 pdpProperties.store(os, strComments);
155 * Appends 'xacml.properties' to a root Path object
157 * @return Path to rootPath/xacml.properties file
159 protected synchronized Path getPropertiesPath() {
160 return Paths.get(pathForData.toAbsolutePath().toString(), "xacml.properties");
164 * Creates an instance of PDP engine given the Properties object.
166 protected synchronized void createEngine(Properties properties) {
168 // Now initialize the XACML PDP Engine
171 PDPEngineFactory factory = PDPEngineFactory.newInstance();
172 PDPEngine engine = factory.newEngine(properties);
173 if (engine != null) {
174 this.pdpEngine = engine;
175 this.pdpProperties = new Properties(properties);
177 } catch (FactoryException e) {
178 LOGGER.error("Failed to create XACML PDP Engine {}", e);
183 * Make a decision call.
185 * @param request Incoming request object
186 * @return Response object
188 protected synchronized Response xacmlDecision(Request request) {
190 // This is what we need to return
192 Response response = null;
196 long timeStart = System.currentTimeMillis();
198 response = this.pdpEngine.decide(request);
199 } catch (PDPException e) {
200 LOGGER.error("Xacml PDP Engine failed {}", e);
203 // Track the end of timing
205 long timeEnd = System.currentTimeMillis();
206 LOGGER.info("Elapsed Time: {}ms", (timeEnd - timeStart));