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/*-
* ============LICENSE_START=======================================================
* demo
* ================================================================================
* Copyright (C) 2018 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.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.kie.api.runtime.KieSession;
import org.onap.policy.controlloop.policy.ControlLoopPolicy;
import org.onap.policy.drools.utils.logging.LoggerUtil;
import org.onap.policy.template.demo.Util.Pair;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Verifies that Params objects are cleaned up when rules are updated. This loads
* <b>two</b> copies of the rule set into a single policy to ensure that the two copies
* interact appropriately with each other's Params objects.
*/
public class ControlLoopParamsCleanupTest {
private static final Logger logger = LoggerFactory.getLogger(ControlLoopParamsCleanupTest.class);
private static final String YAML = "src/test/resources/yaml/policy_ControlLoop_ParamsCleanup-test.yaml";
/**
* YAML to be used when the first rule set is updated.
*/
private static final String YAML2 = "src/test/resources/yaml/policy_ControlLoop_ParamsCleanup-test2.yaml";
private static final String POLICY_VERSION = "v2.0";
private static final String POLICY_NAME = "CL_CleanupTest";
private static final String POLICY_SCOPE = "type=operational";
private static final String CONTROL_LOOP_NAME = "ControlLoop-Params-Cleanup-Test";
private static final String DROOLS_TEMPLATE = "../archetype-cl-amsterdam/src/main/resources/archetype-resources/"
+ "src/main/resources/__closedLoopControlName__.drl";
// values specific to the second copy of the rules
private static final String YAML_B = "src/test/resources/yaml/policy_ControlLoop_ParamsCleanup-test-B.yaml";
private static final String POLICY_NAME_B = "CL_CleanupTest_B";
private static final String CONTROL_LOOP_NAME_B = "ControlLoop-Params-Cleanup-Test-B";
private static KieSession kieSession;
private static Util.RuleSpec[] specifications;
/**
* Setup the simulator.
*/
@BeforeClass
public static void setUpSimulator() {
LoggerUtil.setLevel(LoggerUtil.ROOT_LOGGER, "INFO");
try {
specifications = new Util.RuleSpec[2];
specifications[0] = new Util.RuleSpec(DROOLS_TEMPLATE, CONTROL_LOOP_NAME, POLICY_SCOPE, POLICY_NAME,
POLICY_VERSION, loadYaml(YAML));
specifications[1] = new Util.RuleSpec(DROOLS_TEMPLATE, CONTROL_LOOP_NAME_B, POLICY_SCOPE, POLICY_NAME_B,
POLICY_VERSION, loadYaml(YAML_B));
kieSession = Util.buildContainer(POLICY_VERSION, specifications);
} catch (IOException e) {
logger.error("Could not create kieSession", e);
fail("Could not create kieSession");
}
}
/**
* Tear down.
*/
@AfterClass
public static void tearDown() {
kieSession.dispose();
}
@Test
public void test() throws IOException {
/*
* Let rules create Params objects. There should be one object for each set of
* rules.
*/
kieSession.fireAllRules();
List<Object> facts = getSessionObjects();
assertEquals(specifications.length, facts.size());
Iterator<Object> iter = facts.iterator();
final Object fact1 = iter.next();
assertTrue(fact1.toString().contains(loadYaml(YAML)));
final Object fact1b = iter.next();
assertTrue(fact1b.toString().contains(loadYaml(YAML_B)));
logger.info("UPDATING VERSION TO v3.0");
updatePolicy(YAML2, "v3.0");
/*
* Let rules update Params objects. The Params for the first set of rules should
* now be deleted and replaced with a new one, while the Params for the second set
* should be unchanged.
*/
kieSession.fireAllRules();
facts = getSessionObjects();
assertEquals(specifications.length, facts.size());
iter = facts.iterator();
final Object fact2 = iter.next();
assertTrue(fact2 != fact1);
assertTrue(fact2 != fact1b);
assertTrue(fact2.toString().contains(loadYaml(YAML2)));
assertTrue(iter.next() == fact1b);
logger.info("UPDATING VERSION TO v4.0");
updatePolicy(YAML, "v4.0");
/*
* Let rules update Params objects. The Params for the first set of rules should
* now be deleted and replaced with a new one, while the Params for the second set
* should be unchanged.
*/
kieSession.fireAllRules();
facts = getSessionObjects();
assertEquals(specifications.length, facts.size());
iter = facts.iterator();
final Object fact3 = iter.next();
assertTrue(fact3.toString().contains(loadYaml(YAML)));
assertTrue(fact3 != fact2);
assertTrue(fact3 != fact1b);
assertTrue(iter.next() == fact1b);
logger.info("UPDATING VERSION TO v4.0 (i.e., unchanged)");
updatePolicy(YAML, "v4.0");
/*
* Let rules update Params objects. As the version (and YAML) are unchanged for
* either rule set, both Params objects should be unchanged.
*/
kieSession.fireAllRules();
facts = getSessionObjects();
assertEquals(specifications.length, facts.size());
iter = facts.iterator();
assertTrue(iter.next() == fact3);
assertTrue(iter.next() == fact1b);
}
/**
* Updates the policy, changing the YAML associated with the first rule set.
*
* @param yamlFile name of the YAML file
* @param policyVersion policy version
* @throws IOException if an error occurs
*/
private static void updatePolicy(String yamlFile, String policyVersion) throws IOException {
specifications[0] = new Util.RuleSpec(DROOLS_TEMPLATE, CONTROL_LOOP_NAME, POLICY_SCOPE, POLICY_NAME,
policyVersion, loadYaml(yamlFile));
/*
* Update the policy within the container.
*/
Util.updateContainer(policyVersion, specifications);
}
/**
* Loads a YAML file and URL-encodes it.
*
* @param yamlFile name of the YAML file
* @return the contents of the specified file, URL-encoded
* @throws UnsupportedEncodingException if an error occurs
*/
private static String loadYaml(String yamlFile) throws UnsupportedEncodingException {
Pair<ControlLoopPolicy, String> pair = Util.loadYaml(yamlFile);
assertNotNull(pair);
assertNotNull(pair.first);
assertNotNull(pair.first.getControlLoop());
assertNotNull(pair.first.getControlLoop().getControlLoopName());
assertTrue(pair.first.getControlLoop().getControlLoopName().length() > 0);
return URLEncoder.encode(pair.second, "UTF-8");
}
/**
* Gets the session objects.
*
* @return the session objects
*/
private static List<Object> getSessionObjects() {
// sort the objects so we know the order
LinkedList<Object> lst = new LinkedList<>(kieSession.getObjects());
lst.sort((left, right) -> left.toString().compareTo(right.toString()));
return lst;
}
}
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