--- /dev/null
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdp.xacml.application.common.std;
+
+import com.att.research.xacml.api.Request;
+import com.att.research.xacml.api.Response;
+import com.att.research.xacml.api.pdp.PDPEngine;
+import com.att.research.xacml.api.pdp.PDPEngineFactory;
+import com.att.research.xacml.api.pdp.PDPException;
+import com.att.research.xacml.util.FactoryException;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+
+import org.onap.policy.models.decisions.concepts.DecisionRequest;
+import org.onap.policy.models.decisions.concepts.DecisionResponse;
+import org.onap.policy.pdp.xacml.application.common.XacmlApplicationServiceProvider;
+import org.onap.policy.pdp.xacml.application.common.XacmlPolicyUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class StdXacmlApplicationServiceProvider implements XacmlApplicationServiceProvider {
+
+ private static final Logger LOGGER = LoggerFactory.getLogger(StdXacmlApplicationServiceProvider.class);
+ private Path pathForData = null;
+ private Properties pdpProperties = null;
+ private PDPEngine pdpEngine = null;
+
+ public StdXacmlApplicationServiceProvider() {
+ super();
+ }
+
+ @Override
+ public String applicationName() {
+ return "Please Override";
+ }
+
+ @Override
+ public List<String> actionDecisionsSupported() {
+ return Collections.emptyList();
+ }
+
+ @Override
+ public void initialize(Path pathForData) {
+ //
+ // Save our path
+ //
+ this.pathForData = pathForData;
+ LOGGER.debug("New Path is {}", this.pathForData.toAbsolutePath());
+ //
+ // Look for and load the properties object
+ //
+ try {
+ pdpProperties = XacmlPolicyUtils.loadXacmlProperties(XacmlPolicyUtils.getPropertiesPath(pathForData));
+ LOGGER.debug("{}", pdpProperties);
+ } catch (IOException e) {
+ LOGGER.error("{}", e);
+ }
+ //
+ // Create an engine
+ //
+ createEngine(pdpProperties);
+ }
+
+ @Override
+ public List<String> supportedPolicyTypes() {
+ return Collections.emptyList();
+ }
+
+ @Override
+ public boolean canSupportPolicyType(String policyType, String policyTypeVersion) {
+ return false;
+ }
+
+ @Override
+ public void loadPolicies(Map<String, Object> toscaPolicies) {
+ throw new UnsupportedOperationException("Please override and implement loadPolicies");
+ }
+
+ @Override
+ public DecisionResponse makeDecision(DecisionRequest request) {
+ //
+ // We should have a standard error response to return
+ //
+ return null;
+ }
+
+ protected synchronized PDPEngine getEngine() {
+ return this.pdpEngine;
+ }
+
+ protected synchronized Properties getProperties() {
+ return new Properties(pdpProperties);
+ }
+
+ protected synchronized Path getDataPath() {
+ return pathForData;
+ }
+
+ /**
+ * Load properties from given file.
+ *
+ * @throws IOException If unable to read file
+ */
+ protected synchronized Properties loadXacmlProperties() throws IOException {
+ LOGGER.debug("Loading xacml properties {}", pathForData);
+ try (InputStream is = Files.newInputStream(pathForData)) {
+ Properties properties = new Properties();
+ properties.load(is);
+ return properties;
+ }
+ }
+
+ /**
+ * Stores the XACML Properties to the given file location.
+ *
+ * @throws IOException If unable to store the file.
+ */
+ protected synchronized void storeXacmlProperties() throws IOException {
+ try (OutputStream os = Files.newOutputStream(pathForData)) {
+ String strComments = "#";
+ pdpProperties.store(os, strComments);
+ }
+ }
+
+ /**
+ * Appends 'xacml.properties' to a root Path object
+ *
+ * @return Path to rootPath/xacml.properties file
+ */
+ protected synchronized Path getPropertiesPath() {
+ return Paths.get(pathForData.toAbsolutePath().toString(), "xacml.properties");
+ }
+
+ /**
+ * Creates an instance of PDP engine given the Properties object.
+ */
+ protected synchronized void createEngine(Properties properties) {
+ //
+ // Now initialize the XACML PDP Engine
+ //
+ try {
+ PDPEngineFactory factory = PDPEngineFactory.newInstance();
+ PDPEngine engine = factory.newEngine(properties);
+ if (engine != null) {
+ this.pdpEngine = engine;
+ this.pdpProperties = new Properties(properties);
+ }
+ } catch (FactoryException e) {
+ LOGGER.error("Failed to create XACML PDP Engine {}", e);
+ }
+ }
+
+ /**
+ * Make a decision call.
+ *
+ * @param request Incoming request object
+ * @return Response object
+ */
+ protected synchronized Response xacmlDecision(Request request) {
+ //
+ // This is what we need to return
+ //
+ Response response = null;
+ //
+ // Track some timing
+ //
+ long timeStart = System.currentTimeMillis();
+ try {
+ response = this.pdpEngine.decide(request);
+ } catch (PDPException e) {
+ LOGGER.error("Xacml PDP Engine failed {}", e);
+ } finally {
+ //
+ // Track the end of timing
+ //
+ long timeEnd = System.currentTimeMillis();
+ LOGGER.info("Elapsed Time: {}ms", (timeEnd - timeStart));
+ }
+ return response;
+ }
+
+}
Code Review / policy / xacml-pdp.git / blobdiff