Modified Decision API to accept query parameters and abbreviate Monitor decision results

Issue-ID: POLICY-2126
Change-Id: I18d50a8746ede792ec9507ab98125383c5914ba1
Signed-off-by: HOCKLA <ah999m@att.com>

2 files changed, 296 insertions, 0 deletions

diff --git a/main/src/test/java/org/onap/policy/pdpx/main/rest/TestAbbreviateDecisionResults.java b/main/src/test/java/org/onap/policy/pdpx/main/rest/TestAbbreviateDecisionResults.java
new file mode 100644
index 00000000..716e6412
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/pdpx/main/rest/TestAbbreviateDecisionResults.java
@@ -0,0 +1,295 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * 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.pdpx.main.rest;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+import java.security.KeyManagementException;
+import java.security.NoSuchAlgorithmException;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Properties;
+import java.util.ServiceLoader;
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
+import org.onap.policy.common.endpoints.http.client.HttpClient;
+import org.onap.policy.common.endpoints.http.client.HttpClientConfigException;
+import org.onap.policy.common.endpoints.http.client.internal.JerseyClient;
+import org.onap.policy.common.endpoints.parameters.RestServerParameters;
+import org.onap.policy.common.endpoints.parameters.TopicParameterGroup;
+import org.onap.policy.common.gson.GsonMessageBodyHandler;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardCoder;
+import org.onap.policy.common.utils.network.NetworkUtil;
+import org.onap.policy.models.decisions.concepts.DecisionRequest;
+import org.onap.policy.models.decisions.concepts.DecisionResponse;
+import org.onap.policy.pdp.xacml.application.common.XacmlApplicationException;
+import org.onap.policy.pdp.xacml.application.common.XacmlApplicationServiceProvider;
+import org.onap.policy.pdp.xacml.application.common.XacmlPolicyUtils;
+import org.onap.policy.pdp.xacml.xacmltest.TestUtils;
+import org.onap.policy.pdpx.main.PolicyXacmlPdpException;
+import org.onap.policy.pdpx.main.parameters.CommonTestData;
+import org.onap.policy.pdpx.main.parameters.XacmlPdpParameterGroup;
+import org.onap.policy.pdpx.main.startstop.Main;
+import org.onap.policy.xacml.pdp.application.monitoring.MonitoringPdpApplication;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class TestAbbreviateDecisionResults {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(TestDecision.class);
+
+    private static int port;
+    private static Main main;
+    private static HttpClient client;
+    private static CommonTestData testData = new CommonTestData();
+
+    private static Properties properties = new Properties();
+    private static File propertiesFile;
+    private static XacmlApplicationServiceProvider service;
+
+    private static RestServerParameters policyApiParameters;
+
+    @ClassRule
+    public static final TemporaryFolder appsFolder = new TemporaryFolder();
+
+    /**
+     * BeforeClass setup environment.
+     *
+     * @throws IOException Cannot create temp apps folder
+     * @throws Exception   exception if service does not start
+     */
+    @BeforeClass
+    public static void beforeClass() throws Exception {
+        port = NetworkUtil.allocPort();
+        //
+        // Copy test directory over of the application directories
+        //
+        Path src = Paths.get("src/test/resources/apps");
+        File apps = appsFolder.newFolder("apps");
+        Files.walk(src).forEach(source -> {
+            copy(source, apps.toPath().resolve(src.relativize(source)));
+        });
+
+        // Start the Monitoring Application
+        startXacmlApplicationService(apps);
+
+        // Load monitoring policy
+        TestUtils.loadPolicies("../applications/monitoring/src/test/resources/vDNS.policy.input.yaml", service);
+
+        // Create parameters for XacmlPdPService
+        RestServerParameters rest = testData.toObject(testData.getRestServerParametersMap(port),
+                RestServerParameters.class);
+        policyApiParameters = testData.toObject(testData.getPolicyApiParametersMap(false), RestServerParameters.class);
+        TopicParameterGroup topicParameterGroup = testData.toObject(testData.getTopicParametersMap(false),
+                TopicParameterGroup.class);
+        XacmlPdpParameterGroup params = new XacmlPdpParameterGroup("XacmlPdpGroup", rest, policyApiParameters,
+                topicParameterGroup, apps.getAbsolutePath());
+        StandardCoder gson = new StandardCoder();
+        File fileParams = appsFolder.newFile("params.json");
+        String jsonParams = gson.encode(params);
+        LOGGER.info("Creating new params: {}", jsonParams);
+        Files.write(fileParams.toPath(), jsonParams.getBytes());
+        //
+        // Start the service
+        //
+        main = startXacmlPdpService(fileParams);
+        //
+        // Make sure it is running
+        //
+        if (!NetworkUtil.isTcpPortOpen("localhost", port, 20, 1000L)) {
+            throw new IllegalStateException("Cannot connect to port " + port);
+        }
+        //
+        // Create a client
+        //
+        client = getNoAuthHttpClient();
+    }
+
+    /**
+     * Clean up.
+     */
+    @AfterClass
+    public static void after() throws PolicyXacmlPdpException {
+        stopXacmlPdpService(main);
+        client.shutdown();
+    }
+
+    /**
+     * Tests if the Decision Response contains abbreviated results. Specifically, "properties", "name" and "version"
+     * should have been removed from the response.
+     */
+    @Test
+    public void testAbbreviateDecisionResult() {
+
+        LOGGER.info("Running testAbbreviateDecisionResult");
+
+        try {
+            // Create DecisionRequest
+            DecisionRequest request = new DecisionRequest();
+            request.setOnapName("DCAE");
+            request.setOnapComponent("PolicyHandler");
+            request.setOnapInstance("622431a4-9dea-4eae-b443-3b2164639c64");
+            request.setAction("configure");
+            Map<String, Object> resource = new HashMap<String, Object>();
+            resource.put("policy-id", "onap.scaleout.tca");
+            request.setResource(resource);
+
+            // Query decision API
+            DecisionResponse response = getDecision(request);
+            LOGGER.info("Decision Response {}", response);
+
+            assertFalse(response.getPolicies().isEmpty());
+
+            @SuppressWarnings("unchecked")
+            Map<String, Object> policy = (Map<String, Object>) response.getPolicies().get("onap.scaleout.tca");
+            assertTrue(policy.containsKey("type"));
+            assertFalse(policy.containsKey("properties"));
+            assertFalse(policy.containsKey("name"));
+            assertFalse(policy.containsKey("version"));
+            assertTrue(policy.containsKey("metadata"));
+
+        } catch (Exception e) {
+            LOGGER.error("Exception {}", e);
+            fail("testAbbreviateDecisionResult failed due to: " + e.getLocalizedMessage());
+        }
+    }
+
+    private static Main startXacmlPdpService(File params) throws PolicyXacmlPdpException {
+        final String[] XacmlPdpConfigParameters = { "-c", params.getAbsolutePath() };
+        return new Main(XacmlPdpConfigParameters);
+    }
+
+    private static void stopXacmlPdpService(final Main main) throws PolicyXacmlPdpException {
+        main.shutdown();
+    }
+
+    /**
+     * Performs the POST request to Decision API.
+     *
+     */
+    private DecisionResponse getDecision(DecisionRequest request) throws HttpClientConfigException {
+
+        Entity<DecisionRequest> entityRequest = Entity.entity(request, MediaType.APPLICATION_JSON);
+        Response response = client.post("", entityRequest, Collections.emptyMap());
+
+        assertEquals(200, response.getStatus());
+        return HttpClient.getBody(response, DecisionResponse.class);
+    }
+
+    /**
+     * Create HttpClient.
+     *
+     */
+    private static HttpClient getNoAuthHttpClient()
+            throws HttpClientConfigException, KeyManagementException, NoSuchAlgorithmException, ClassNotFoundException {
+        BusTopicParams clientParams = new BusTopicParams();
+        clientParams.setClientName("testName");
+        clientParams.setSerializationProvider(GsonMessageBodyHandler.class.getName());
+        clientParams.setUseHttps(false);
+        clientParams.setAllowSelfSignedCerts(false);
+        clientParams.setHostname("localhost");
+        clientParams.setPort(port);
+        clientParams.setBasePath("policy/pdpx/v1/decision?abbrev=true");
+        clientParams.setUserName("healthcheck");
+        clientParams.setPassword("zb!XztG34");
+        clientParams.setManaged(true);
+        client = new JerseyClient(clientParams);
+        return client;
+    }
+
+    private static void copy(Path source, Path dest) {
+        try {
+            LOGGER.info("Copying {} to {}", source, dest);
+            Files.copy(source, dest, StandardCopyOption.REPLACE_EXISTING);
+        } catch (IOException e) {
+            LOGGER.error("Failed to copy {} to {}", source, dest);
+        }
+    }
+
+    /**
+     * Initializes the Monitoring application service
+     *
+     * @param apps - the path to xacml.properties file
+     */
+    private static void startXacmlApplicationService(File apps)
+            throws XacmlApplicationException, CoderException, IOException {
+        LOGGER.info("****** Starting Xacml Application Service ******");
+        //
+        // Setup our temporary folder
+        //
+        XacmlPolicyUtils.FileCreator myCreator = (String filename) -> {
+            new File(apps, "monitoring/" + filename).delete();
+            return appsFolder.newFile("apps/monitoring/" + filename);
+        };
+        propertiesFile = XacmlPolicyUtils.copyXacmlPropertiesContents(
+                "../applications/monitoring/src/test/resources/xacml.properties", properties, myCreator);
+        //
+        // Load XacmlApplicationServiceProvider service
+        //
+        ServiceLoader<XacmlApplicationServiceProvider> applicationLoader = ServiceLoader
+                .load(XacmlApplicationServiceProvider.class);
+        //
+        // Look for our class instance and save it
+        //
+        StringBuilder strDump = new StringBuilder("Loaded applications:" + System.lineSeparator());
+        for (XacmlApplicationServiceProvider application : applicationLoader) {
+            //
+            // Is it our service?
+            //
+            if (application instanceof MonitoringPdpApplication) {
+                //
+                // Should be the first and only one
+                //
+                assertThat(service).isNull();
+                service = application;
+            }
+            strDump.append(application.applicationName());
+            strDump.append(" supports ");
+            strDump.append(application.supportedPolicyTypes());
+            strDump.append(System.lineSeparator());
+        }
+        LOGGER.debug("{}", strDump);
+        //
+        // Tell it to initialize based on the properties file
+        // we just built for it.
+        //
+        service.initialize(propertiesFile.toPath().getParent(), policyApiParameters);
+    }
+}
diff --git a/main/src/test/java/org/onap/policy/pdpx/main/rest/TestDecision.java b/main/src/test/java/org/onap/policy/pdpx/main/rest/TestDecision.java
index 5f75e6dd..042180b4 100644
--- a/main/src/test/java/org/onap/policy/pdpx/main/rest/TestDecision.java
+++ b/main/src/test/java/org/onap/policy/pdpx/main/rest/TestDecision.java
@@ -131,6 +131,7 @@ public class TestDecision {
     @AfterClass
     public static void after() throws PolicyXacmlPdpException {
         stopXacmlPdpService(main);
+        client.shutdown();
     }
 
     @Test