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/*-
* ============LICENSE_START=======================================================
* demo
* ================================================================================
* Copyright (C) 2017 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.template.demo;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.net.URLEncoder;
import java.time.Instant;
import java.util.HashMap;
import java.util.UUID;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.kie.api.runtime.KieSession;
import org.kie.api.runtime.rule.FactHandle;
import org.onap.policy.controlloop.ControlLoopEventStatus;
import org.onap.policy.controlloop.ControlLoopNotificationType;
import org.onap.policy.controlloop.ControlLoopTargetType;
import org.onap.policy.controlloop.VirtualControlLoopEvent;
import org.onap.policy.controlloop.VirtualControlLoopNotification;
import org.onap.policy.controlloop.policy.ControlLoopPolicy;
import org.onap.policy.controlloop.policy.TargetType;
import org.onap.policy.drools.http.server.HttpServletServer;
import org.onap.policy.drools.impl.PolicyEngineJUnitImpl;
import org.onap.policy.drools.system.PolicyEngine;
import org.onap.policy.guard.PolicyGuard;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class VDNSControlLoopTest {
private static final Logger logger = LoggerFactory.getLogger(VDNSControlLoopTest.class);
private KieSession kieSession;
private Util.Pair<ControlLoopPolicy, String> pair;
private PolicyEngineJUnitImpl engine;
static {
/* Set environment properties */
PolicyEngine.manager.setEnvironmentProperty("aai.url", "http://localhost:6666");
PolicyEngine.manager.setEnvironmentProperty("aai.username", "AAI");
PolicyEngine.manager.setEnvironmentProperty("aai.password", "AAI");
PolicyEngine.manager.setEnvironmentProperty("so.url", "http://localhost:6667");
PolicyEngine.manager.setEnvironmentProperty("so.username", "SO");
PolicyEngine.manager.setEnvironmentProperty("so.password", "SO");
}
@BeforeClass
public static void setUpSimulator() {
try {
Util.buildAaiSim();
Util.buildSoSim();
} catch (Exception e) {
fail(e.getMessage());
}
}
@AfterClass
public static void tearDownSimulator() {
HttpServletServer.factory.destroy();
}
@Test
public void successTest() {
/*
* Start the kie session
*/
try {
kieSession = startSession("src/main/resources/ControlLoop_Template_xacml_guard.drl",
"src/test/resources/yaml/policy_ControlLoop_SO-test.yaml",
"type=operational",
"CL_vDNS",
"v2.0");
} catch (IOException e) {
e.printStackTrace();
logger.debug("Could not create kieSession");
fail("Could not create kieSession");
}
/*
* Create a thread to continuously fire rules
* until main thread calls halt
*/
new Thread( new Runnable() {
@Override
public void run() {
kieSession.fireUntilHalt();
}
} ).start();
/*
* Create a unique requestId and a unique trigger source
*/
UUID requestID = UUID.randomUUID();
String triggerSourceName = "foobartriggersource36";
/*
* This will be the object returned from the PolicyEngine
*/
Object obj = null;
/*
* Simulate an onset event the policy engine will
* receive from DCAE to kick off processing through
* the rules
*/
try {
sendOnset(pair.a, requestID, triggerSourceName);
} catch (InterruptedException e) {
e.printStackTrace();
logger.debug("Unable to send onset event");
fail("Unable to send onset event");
}
/*
* Pull the object that was sent out and make
* sure it is a ControlLoopNoticiation of type active
*/
obj = engine.subscribe("UEB", "POLICY-CL-MGT");
assertNotNull(obj);
assertTrue(obj instanceof VirtualControlLoopNotification);
assertTrue(((VirtualControlLoopNotification)obj).notification.equals(ControlLoopNotificationType.ACTIVE));
/*
* Give the control loop time to acquire a lock
*/
try {
Thread.sleep(4000);
} catch (InterruptedException e) {
e.printStackTrace();
logger.debug("An interrupt Exception was thrown");
fail("An interrupt Exception was thrown");
}
/*
* Give time to finish processing
*/
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
e.printStackTrace();
logger.debug("An interrupt Exception was thrown");
fail("An interrupt Exception was thrown");
}
/*
* One final check to make sure the lock is released
*/
assertFalse(PolicyGuard.isLocked(TargetType.VNF, triggerSourceName, requestID));
/*
* This will stop the thread that is firing the rules
*/
kieSession.halt();
/*
* The only fact in memory should be Params
*/
assertEquals(1, kieSession.getFactCount());
/*
* Print what's left in memory
*/
dumpFacts(kieSession);
/*
* Gracefully shut down the kie session
*/
kieSession.dispose();
}
/**
* This method will start a kie session and instantiate
* the Policy Engine.
*
* @param droolsTemplate
* the DRL rules file
* @param yamlFile
* the yaml file containing the policies
* @param policyScope
* scope for policy
* @param policyName
* name of the policy
* @param policyVersion
* version of the policy
* @return the kieSession to be used to insert facts
* @throws IOException
*/
private KieSession startSession(String droolsTemplate,
String yamlFile,
String policyScope,
String policyName,
String policyVersion) throws IOException {
/*
* Load policies from yaml
*/
pair = Util.loadYaml(yamlFile);
assertNotNull(pair);
assertNotNull(pair.a);
assertNotNull(pair.a.getControlLoop());
assertNotNull(pair.a.getControlLoop().getControlLoopName());
assertTrue(pair.a.getControlLoop().getControlLoopName().length() > 0);
/*
* Construct a kie session
*/
final KieSession kieSession = Util.buildContainer(droolsTemplate,
pair.a.getControlLoop().getControlLoopName(),
policyScope,
policyName,
policyVersion,
URLEncoder.encode(pair.b, "UTF-8"));
/*
* Retrieve the Policy Engine
*/
engine = (PolicyEngineJUnitImpl) kieSession.getGlobal("Engine");
logger.debug("============");
logger.debug(URLEncoder.encode(pair.b, "UTF-8"));
logger.debug("============");
return kieSession;
}
/**
* This method is used to simulate event messages from DCAE
* that start the control loop (onset message).
*
* @param policy the controlLoopName comes from the policy
* @param requestID the requestId for this event
* @param triggerSourceName
* @throws InterruptedException
*/
protected void sendOnset(ControlLoopPolicy policy, UUID requestID, String triggerSourceName) throws InterruptedException {
VirtualControlLoopEvent event = new VirtualControlLoopEvent();
event.closedLoopControlName = policy.getControlLoop().getControlLoopName();
event.requestID = requestID;
event.target = "VNF_NAME";
event.target_type = ControlLoopTargetType.VNF;
event.closedLoopAlarmStart = Instant.now();
event.AAI = new HashMap<>();
event.AAI.put("cloud-region.identity-url", "foo");
event.AAI.put("vserver.selflink", "bar");
event.AAI.put("vserver.is-closed-loop-disabled", "false");
event.AAI.put("vserver.vserver-name", "vserver-name-16102016-aai3255-data-11-1");
event.closedLoopEventStatus = ControlLoopEventStatus.ONSET;
kieSession.insert(event);
Thread.sleep(2000);
}
/**
* This method is used to simulate event messages from DCAE
* that end the control loop (abatement message).
*
* @param policy the controlLoopName comes from the policy
* @param requestID the requestId for this event
* @param triggerSourceName
* @throws InterruptedException
*/
protected void sendAbatement(ControlLoopPolicy policy, UUID requestID, String triggerSourceName) throws InterruptedException {
VirtualControlLoopEvent event = new VirtualControlLoopEvent();
event.closedLoopControlName = policy.getControlLoop().getControlLoopName();
event.requestID = requestID;
event.target = "generic-vnf.vnf-id";
event.closedLoopAlarmStart = Instant.now().minusSeconds(5);
event.closedLoopAlarmEnd = Instant.now();
event.AAI = new HashMap<>();
event.AAI.put("cloud-region.identity-url", "foo");
event.AAI.put("vserver.selflink", "bar");
event.AAI.put("vserver.is-closed-loop-disabled", "false");
event.AAI.put("generic-vnf.vnf-id", "testGenericVnfID");
event.closedLoopEventStatus = ControlLoopEventStatus.ABATED;
kieSession.insert(event);
}
/**
* This method will dump all the facts in the working memory.
*
* @param kieSession the session containing the facts
*/
public void dumpFacts(KieSession kieSession) {
logger.debug("Fact Count: {}", kieSession.getFactCount());
for (FactHandle handle : kieSession.getFactHandles()) {
logger.debug("FACT: {}", handle);
}
}
}
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