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/*-
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2017-2020 AT&T Intellectual Property. All rights reserved.
* Modifications Copyright (C) 2023 Nordix Foundation.
* ================================================================================
* 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.processor;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.junit.jupiter.api.Test;
import org.onap.policy.common.utils.coder.CoderException;
import org.onap.policy.common.utils.coder.StandardCoder;
import org.onap.policy.common.utils.resources.ResourceUtils;
import org.onap.policy.controlloop.ControlLoopException;
import org.onap.policy.controlloop.actorserviceprovider.OperationResult;
import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
import org.onap.policy.models.tosca.authorative.concepts.ToscaServiceTemplate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
class ControlLoopProcessorTest {
private static final Logger logger = LoggerFactory.getLogger(ControlLoopProcessorTest.class);
private static final StandardCoder coder = new StandardCoder();
@Test
void testControlLoopProcessor() throws IOException, ControlLoopException {
var yamlString = Files.readString(new File("src/test/resources/test.yaml").toPath(), StandardCharsets.UTF_8);
this.testSuccess(yamlString);
this.testFailure(yamlString);
}
private ToscaPolicy getPolicyFromResource(String resourcePath, String policyName) throws CoderException {
var policyJson = ResourceUtils.getResourceAsString(resourcePath);
var serviceTemplate = coder.decode(policyJson, ToscaServiceTemplate.class);
var policy = serviceTemplate.getToscaTopologyTemplate().getPolicies().get(0).get(policyName);
assertNotNull(policy);
/*
* name and version are used within a drl. api component and drools core will ensure that these
* are populated.
*/
if (StringUtils.isBlank(policy.getName())) {
policy.setName(policyName);
}
if (StringUtils.isBlank(policy.getVersion())) {
policy.setVersion(policy.getTypeVersion());
}
return serviceTemplate.getToscaTopologyTemplate().getPolicies().get(0).get(policyName);
}
@Test
void testControlLoopFromToscaCompliant()
throws CoderException, ControlLoopException {
assertNotNull(
new ControlLoopProcessor(
getPolicyFromResource(
"policies/vCPE.policy.operational.input.tosca.json", "operational.restart")
).getCurrentPolicy());
assertNotNull(
new ControlLoopProcessor(
getPolicyFromResource(
"policies/vFirewall.policy.operational.input.tosca.json", "operational.modifyconfig")
).getCurrentPolicy());
assertNotNull(
new ControlLoopProcessor(
getPolicyFromResource(
"policies/vDNS.policy.operational.input.tosca.json", "operational.scaleout")
).getCurrentPolicy());
}
@Test
void testControlLoopFromToscaCompliantBad() throws CoderException {
var toscaPolicy = getPolicyFromResource(
"policies/vCPE.policy.operational.input.tosca.json", "operational.restart");
toscaPolicy.setVersion(null);
assertThatThrownBy(() -> new ControlLoopProcessor(toscaPolicy)).hasCauseInstanceOf(CoderException.class);
}
@Test
void testControlLoopProcessorBadYaml() throws IOException {
var is = new FileInputStream(new File("src/test/resources/string.yaml"));
var yamlString = IOUtils.toString(is, StandardCharsets.UTF_8);
assertThatThrownBy(() -> new ControlLoopProcessor(yamlString))
.hasMessageEndingWith("Cannot decode yaml into ToscaServiceTemplate");
}
@Test
void testControlLoopProcessorBadTriggerYaml() throws IOException, ControlLoopException {
var yamlString = Files.readString(new File("src/test/resources/badtriggerpolicy.yaml").toPath(),
StandardCharsets.UTF_8);
var clProcessor = new ControlLoopProcessor(yamlString);
assertNull(clProcessor.getCurrentPolicy());
assertThatThrownBy(() -> clProcessor.nextPolicyForResult(OperationResult.SUCCESS))
.hasMessageStartingWith("There is no current policy to determine where to go to.");
}
@Test
void testControlLoopProcessorNoPolicyYaml() throws IOException, ControlLoopException {
var is = new FileInputStream(new File("src/test/resources/nopolicy.yaml"));
var yamlString = IOUtils.toString(is, StandardCharsets.UTF_8);
var clProcessor = new ControlLoopProcessor(yamlString);
assertThatThrownBy(clProcessor::getCurrentPolicy)
.hasMessage("There are no policies defined.");
}
@Test
void testControlLoopProcessorNextPolicyForResult() throws IOException, ControlLoopException {
var is = new FileInputStream(new File("src/test/resources/test.yaml"));
var yamlString = IOUtils.toString(is, StandardCharsets.UTF_8);
for (var result : OperationResult.values()) {
checkResult(yamlString, result);
}
}
private void checkResult(String yamlString, OperationResult result) throws ControlLoopException {
var clProcessor = new ControlLoopProcessor(yamlString);
clProcessor.getCurrentPolicy();
clProcessor.nextPolicyForResult(result);
}
/**
* Test policies in the given yaml following the successful path.
*
* @param yaml yaml containing the policies to test
* @throws ControlLoopException if an error occurs
*/
public void testSuccess(String yaml) throws ControlLoopException {
var processor = new ControlLoopProcessor(yaml);
logger.debug("testSuccess: {}", processor.getCurrentPolicy());
while (true) {
var result = processor.checkIsCurrentPolicyFinal();
if (result != null) {
logger.debug("{}", result);
break;
}
var policy = processor.getCurrentPolicy();
assertNotNull(policy);
logger.debug("current policy is: {}", policy.getId());
processor.nextPolicyForResult(OperationResult.SUCCESS);
}
}
/**
* Test policies in the given yaml following the failure path.
*
* @param yaml yaml containing the policies to test
* @throws ControlLoopException if an error occurs
*/
public void testFailure(String yaml) throws ControlLoopException {
var processor = new ControlLoopProcessor(yaml);
logger.debug("testFailure: {}", processor.getCurrentPolicy());
while (true) {
var result = processor.checkIsCurrentPolicyFinal();
if (result != null) {
logger.debug("{}", result);
break;
}
var policy = processor.getCurrentPolicy();
assertNotNull(policy);
logger.debug("current policy is: {}", policy.getId());
processor.nextPolicyForResult(OperationResult.FAILURE);
}
}
}
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