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/*-
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2017-2019,2022 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.drools.healthcheck;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import java.io.IOException;
import java.nio.file.Paths;
import java.util.HashMap;
import java.util.List;
import java.util.Properties;
import org.eclipse.jetty.http.HttpStatus;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.kie.api.builder.ReleaseId;
import org.mockito.AdditionalAnswers;
import org.onap.policy.common.endpoints.http.client.HttpClientFactoryInstance;
import org.onap.policy.common.endpoints.http.server.HttpServletServerFactoryInstance;
import org.onap.policy.common.utils.logging.LoggerUtils;
import org.onap.policy.common.utils.network.NetworkUtil;
import org.onap.policy.drools.healthcheck.HealthCheck.Reports;
import org.onap.policy.drools.persistence.SystemPersistenceConstants;
import org.onap.policy.drools.properties.DroolsPropertyConstants;
import org.onap.policy.drools.system.PolicyController;
import org.onap.policy.drools.system.PolicyControllerConstants;
import org.onap.policy.drools.system.PolicyEngineConstants;
import org.onap.policy.drools.util.KieUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class HealthCheckFeatureTest {
private static final Logger logger = LoggerFactory.getLogger(HealthCheckFeatureTest.class);
private static final String EXPECTED = "expected exception";
/**
* Set up.
*/
@BeforeClass
public static void setup() throws IOException {
SystemPersistenceConstants.getManager().setConfigurationDir("target/test-classes");
LoggerUtils.setLevel("org.onap.policy.common.endpoints", "WARN");
LoggerUtils.setLevel("org.eclipse", "ERROR");
LoggerUtils.setLevel("org.onap.policy.drools.healthcheck", "DEBUG");
LoggerUtils.setLevel("ROOT", "INFO");
ReleaseId coords = KieUtils.installArtifact(Paths.get("src/test/resources/echo.kmodule").toFile(),
Paths.get("src/test/resources/echo.pom").toFile(),
"src/main/resources/kbecho/org/onap/policy/drools/healthcheck/",
List.of(Paths.get("src/test/resources/echo.drl").toFile()));
Properties controllerProps = new Properties();
controllerProps.put(DroolsPropertyConstants.PROPERTY_CONTROLLER_NAME, "echo");
controllerProps.put(DroolsPropertyConstants.RULES_GROUPID, coords.getGroupId());
controllerProps.put(DroolsPropertyConstants.RULES_ARTIFACTID, coords.getArtifactId());
controllerProps.put(DroolsPropertyConstants.RULES_VERSION, coords.getVersion());
PolicyController controller = PolicyControllerConstants.getFactory().build("echo", controllerProps);
controller.start();
}
/**
* Tear down.
*/
@AfterClass
public static void teardown() {
PolicyControllerConstants.getFactory().destroy();
HttpClientFactoryInstance.getClientFactory().destroy();
HttpServletServerFactoryInstance.getServerFactory().destroy();
}
@Test
public void test() throws InterruptedException {
var manager = spy(HealthCheckManager.class);
var feature = new HealthCheckFeatureImpl(manager);
when(manager.isEngineAlive()).thenReturn(true);
feature.afterStart(PolicyEngineConstants.getManager());
feature.afterOpen(PolicyEngineConstants.getManager());
checkOpen(7777);
checkOpen(7776);
var reports = healthcheck(manager);
serverChecks(reports);
checkReports(reports, List.of("STUCK"),
HttpStatus.OK_200, HttpStatus.getMessage(200));
checkReports(reports, List.of("echo"), 1, "[echo:{java.lang.String=1}]");
/* mock controller and clients stuck */
RestMockHealthCheck.stuck = true; // make the server named STUCK unresponsive
doAnswer(AdditionalAnswers
.answersWithDelay((manager.getTimeoutSeconds() + 2) * 1000L,
invocationOnMock -> new HashMap<String, Integer>()))
.when(manager).getFactTypes(any(), any());
reports = healthcheck(manager);
RestMockHealthCheck.stuck = false; // unstuck the server named STUCK
serverChecks(reports);
checkReports(reports, List.of("STUCK"),
HealthCheckManager.TIMEOUT_CODE, HealthCheckManager.TIMEOUT_MESSAGE);
assertTrue(RestMockHealthCheck.WAIT * 1000 > HealthCheckManagerTest.select(reports, "STUCK",
HealthCheckManager.TIMEOUT_CODE, HealthCheckManager.TIMEOUT_MESSAGE)
.get(0).getElapsedTime());
feature.afterShutdown(PolicyEngineConstants.getManager());
}
private void checkReports(Reports reports, List<String> reportNames, int code, String message) {
reportNames
.forEach(name -> assertEquals(1,
HealthCheckManagerTest.select(reports, name, code, message).size()));
}
private Reports healthcheck(HealthCheck manager) {
var reports = manager.healthCheck();
logger.info("{}", reports);
return reports;
}
private void checkOpen(int port) throws InterruptedException {
if (!NetworkUtil.isTcpPortOpen("localhost", port, 5, 10000L)) {
throw new IllegalStateException("cannot connect to port " + port);
}
}
private void serverChecks(Reports reports) {
checkReports(reports, List.of("HEALTHCHECK", "LIVENESS"),
HttpStatus.OK_200, HttpStatus.getMessage(200));
checkReports(reports, List.of("UNAUTH"),
HttpStatus.UNAUTHORIZED_401, HttpStatus.getMessage(401));
checkReports(reports, List.of(HealthCheckManager.ENGINE_NAME),
HealthCheckManager.SUCCESS_CODE, HealthCheckManager.ENABLED_MESSAGE);
}
@Test
public void testGetSequenceNumber() {
assertEquals(1000, new HealthCheckFeature().getSequenceNumber());
}
@Test
public void testAfterStart() {
HealthCheck checker = mock(HealthCheck.class);
HealthCheckFeature feature = new HealthCheckFeatureImpl(checker);
// without exception
assertFalse(feature.afterStart(null));
verify(checker).start();
verify(checker, never()).stop();
// with exception
doThrow(new IllegalStateException(EXPECTED)).when(checker).start();
assertFalse(feature.afterStart(null));
}
@Test
public void testAfterOpen() {
HealthCheck checker = mock(HealthCheck.class);
HealthCheckFeature feature = new HealthCheckFeatureImpl(checker);
// without exception
assertFalse(feature.afterOpen(null));
verify(checker).open();
verify(checker, never()).stop();
// with exception
doThrow(new IllegalStateException(EXPECTED)).when(checker).open();
assertFalse(feature.afterOpen(null));
}
@Test
public void testAfterShutdown() {
HealthCheck checker = mock(HealthCheck.class);
HealthCheckFeature feature = new HealthCheckFeatureImpl(checker);
// without exception
assertFalse(feature.afterShutdown(null));
verify(checker).stop();
verify(checker, never()).start();
// with exception
doThrow(new IllegalStateException(EXPECTED)).when(checker).stop();
assertFalse(feature.afterShutdown(null));
}
/**
* Feature that returns a particular monitor.
*/
private static class HealthCheckFeatureImpl extends HealthCheckFeature {
private final HealthCheck checker;
public HealthCheckFeatureImpl(HealthCheck checker) {
this.checker = checker;
}
@Override
public HealthCheck getManager() {
return checker;
}
}
}
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