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/*-
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2019-2020 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.controlloop;
import static org.awaitility.Awaitility.await;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.nio.file.Paths;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.onap.policy.appclcm.AppcLcmDmaapWrapper;
import org.onap.policy.common.utils.coder.CoderException;
import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
/**
* VCPE Use Case Tests.
*/
public class VcpeTest extends UsecasesBase {
/**
* VCPE Tosca Policy File.
*/
private static final String TOSCA_POLICY_VCPE = "src/test/resources/vcpe/tosca-vcpe.json";
/*
* VCPE Use case Messages.
*/
private static final String APPC_SUCCESS = "src/test/resources/vcpe/vcpe.appc.success.json";
private static final String ONSET_1 = "src/test/resources/vcpe/vcpe.onset.1.json";
private static final String ONSET_2 = "src/test/resources/vcpe/vcpe.onset.2.json";
private static final String ONSET_3 = "src/test/resources/vcpe/vcpe.onset.3.json";
/*
* Topic trackers used by the VCPE use case.
*/
private TopicCallback<VirtualControlLoopNotification> policyClMgt;
private TopicCallback<AppcLcmDmaapWrapper> appcLcmRead;
private TopicCallback<AppcLcmDmaapWrapper> appcLcmWrite;
/*
* VCPE Tosca Policy.
*/
private ToscaPolicy policy;
/**
* Prepare PDP-D Framework for testing.
*/
@BeforeClass
public static void prepareResouces() throws InterruptedException, CoderException, IOException {
setupLogging();
preparePdpD();
setupSimulators();
}
/**
* Take down the resources used by the test framework.
*/
@AfterClass
public static void takeDownResources() {
stopPdpD();
stopSimulators();
}
/**
* Sunny day scenario for the VCPE use case.
*/
@Test
public void sunnyDay() throws IOException {
/* Inject an ONSET event over the DCAE topic */
injectOnTopic(DCAE_TOPIC, Paths.get(ONSET_1));
/* Wait to acquire a LOCK and a PDP-X PERMIT */
waitForLockAndPermit(policy, policyClMgt);
/* --- VCPE Operation Execution --- */
/* Ensure that an APPC RESTART request was sent in response to the matching ONSET */
await().until(() -> !appcLcmRead.getMessages().isEmpty());
assertEquals("restart", appcLcmRead.getMessages().remove().getRpcName());
/* Inject a 400 APPC Response Return over the APPC topic */
injectOnTopic(APPC_LCM_WRITE_TOPIC, Paths.get(APPC_SUCCESS));
/* Ensure that RESTART response is received */
await().until(() -> !appcLcmWrite.getMessages().isEmpty());
assertEquals("restart", appcLcmWrite.getMessages().peek().getRpcName());
assertEquals(400, appcLcmWrite.getMessages().remove().getBody().getOutput().getStatus().getCode());
/* --- VCPE Operation Completed --- */
/* Ensure that the VCPE RESTART Operation is successfully completed */
await().until(() -> !policyClMgt.getMessages().isEmpty());
assertEquals(ControlLoopNotificationType.OPERATION_SUCCESS, policyClMgt.getMessages().peek().getNotification());
assertEquals(policy.getIdentifier().getName() + ".APPC.LCM.RESPONSE",
policyClMgt.getMessages().remove().getPolicyName());
/* --- VCPE Transaction Completed --- */
waitForFinalSuccess(policy, policyClMgt);
}
/**
* An ONSET flood prevention test that injects a few ONSETs at once.
* It attempts to simulate the flooding behavior of the DCAE TCA microservice.
* TCA could blast tenths or hundreds of ONSETs within sub-second intervals.
*/
@Test
public void onsetFloodPrevention() throws IOException {
injectOnTopic(DCAE_TOPIC, Paths.get(ONSET_1));
injectOnTopic(DCAE_TOPIC, Paths.get(ONSET_2));
injectOnTopic(DCAE_TOPIC, Paths.get(ONSET_3));
assertEquals(1, usecases.getDrools().facts(USECASES, VirtualControlLoopEvent.class).stream().count());
assertEquals(1, usecases.getDrools().facts(USECASES, CanonicalOnset.class).stream().count());
assertEquals(usecases.getDrools().facts(USECASES, CanonicalOnset.class).get(0),
usecases.getDrools().facts(USECASES, VirtualControlLoopEvent.class).get(0));
sunnyDay();
}
/**
* Observe Topics.
*/
@Before
public void topicsRegistration() {
policyClMgt = createTopicSinkCallback(POLICY_CL_MGT_TOPIC, VirtualControlLoopNotification.class);
appcLcmRead = createTopicSinkCallback(APPC_LCM_READ_TOPIC, AppcLcmDmaapWrapper.class);
appcLcmWrite = createTopicSourceCallback(APPC_LCM_WRITE_TOPIC, AppcLcmDmaapWrapper.class);
}
/**
* Unregister Topic Callbacks.
*/
@After
public void topicsUnregistration() {
if (policyClMgt != null) {
policyClMgt.unregister();
}
if (appcLcmRead != null) {
appcLcmRead.unregister();
}
if (appcLcmWrite != null) {
appcLcmWrite.unregister();
}
}
/**
* Install Policy.
*/
@Before
public void installPolicy() throws IOException, CoderException, InterruptedException {
assertEquals(0, usecases.getDrools().factCount(USECASES));
policy = setupPolicy(TOSCA_POLICY_VCPE);
assertEquals(2, usecases.getDrools().factCount(USECASES));
}
/**
* Uninstall Policy.
*/
@After
public void uninstallPolicy() throws InterruptedException {
assertEquals(2, usecases.getDrools().factCount(USECASES));
if (policy != null) {
deletePolicy(policy);
}
assertEquals(0, usecases.getDrools().factCount(USECASES));
}
}
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