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Fault Tolerance for MicroProfile :: TCK
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/*
*******************************************************************************
* Copyright (c) 2018-2020 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* 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.
*******************************************************************************/
package org.eclipse.microprofile.fault.tolerance.tck;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeoutException;
import org.eclipse.microprofile.fault.tolerance.tck.circuitbreaker.clientserver.CircuitBreakerClientWithAsyncBulkhead;
import org.eclipse.microprofile.fault.tolerance.tck.circuitbreaker.clientserver.CircuitBreakerClientWithAsyncBulkheadNoFail;
import org.eclipse.microprofile.fault.tolerance.tck.circuitbreaker.clientserver.CircuitBreakerClientWithSyncBulkhead;
import org.eclipse.microprofile.fault.tolerance.tck.util.AsyncTaskManager;
import org.eclipse.microprofile.fault.tolerance.tck.util.AsyncTaskManager.BarrierTask;
import org.eclipse.microprofile.fault.tolerance.tck.util.Packages;
import org.eclipse.microprofile.faulttolerance.exceptions.BulkheadException;
import org.eclipse.microprofile.faulttolerance.exceptions.CircuitBreakerOpenException;
import org.jboss.arquillian.container.test.api.Deployment;
import org.jboss.arquillian.testng.Arquillian;
import org.jboss.shrinkwrap.api.ShrinkWrap;
import org.jboss.shrinkwrap.api.asset.EmptyAsset;
import org.jboss.shrinkwrap.api.spec.JavaArchive;
import org.jboss.shrinkwrap.api.spec.WebArchive;
import org.testng.annotations.Test;
import jakarta.inject.Inject;
public class CircuitBreakerBulkheadTest extends Arquillian {
@Deployment
public static WebArchive deploy() {
JavaArchive testJar = ShrinkWrap.create(JavaArchive.class, "ftCircuitBreakerBulkhead.jar")
.addClasses(CircuitBreakerClientWithAsyncBulkhead.class,
CircuitBreakerClientWithSyncBulkhead.class,
CircuitBreakerClientWithAsyncBulkheadNoFail.class)
.addPackage(Packages.UTILS)
.addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml")
.as(JavaArchive.class);
WebArchive war = ShrinkWrap.create(WebArchive.class, "ftCircuitBreakerBulkhead.war")
.addAsLibrary(testJar);
return war;
}
@Inject
private CircuitBreakerClientWithAsyncBulkhead asyncBulkheadClient;
@Inject
private CircuitBreakerClientWithSyncBulkhead syncBulkheadClient;
@Inject
private CircuitBreakerClientWithAsyncBulkheadNoFail asyncBulkheadNoFailClient;
/**
* A test to ensure that the CircuitBreaker is checked before entering the Bulkhead and that BulkheadExceptions
* count as failures for the CircuitBreaker.
*
* Uses an asynchronous bulkhead
*
* With requestVolumeThreshold = 3, failureRatio = 1.0, delay = 50000 the expected behaviour is,
*
* Execution Behaviour ========= ========= 1 Fill Bulkhead 2 Fill Bulkhead 3 BulkheadException 4 BulkheadException 5
* BulkheadException 6 CircuitBreakerOpenException 7 CircuitBreakerOpenException
*
* @throws InterruptedException
* if the test is interrupted
* @throws TimeoutException
* if waiting for a result takes too long
* @throws ExecutionException
* if an async method throws an unexpected exception
*/
@Test
public void testCircuitBreakerAroundBulkheadAsync()
throws InterruptedException, ExecutionException, TimeoutException {
try (AsyncTaskManager taskManager = new AsyncTaskManager()) {
BarrierTask task1 = taskManager.runAsyncBarrierTask(asyncBulkheadClient::test);
task1.assertAwaits();
BarrierTask task2 = taskManager.runAsyncBarrierTask(asyncBulkheadClient::test);
task2.assertNotAwaiting();
// While circuit closed, we get a BulkheadException
for (int i = 3; i < 6; i++) {
BarrierTask taski = taskManager.runAsyncBarrierTask(asyncBulkheadClient::test);
taski.assertThrows(BulkheadException.class);
}
// While circuit closed, we get a BulkheadException
for (int i = 6; i < 8; i++) {
BarrierTask taski = taskManager.runAsyncBarrierTask(asyncBulkheadClient::test);
taski.assertThrows(CircuitBreakerOpenException.class);
}
task1.openBarrier();
task1.assertSuccess();
task2.openBarrier();
task2.assertSuccess();
}
}
/**
* A test to ensure that the CircuitBreaker is checked before entering the Bulkhead and that BulkheadExceptions
* count as failures for the CircuitBreaker.
*
* Uses a synchronous bulkhead
*
* With requestVolumeThreshold = 3, failureRatio = 1.0, delay = 50000 the expected behaviour is,
*
* Execution Behaviour ========= ========= 1 Fill Bulkhead 2 BulkheadException 3 BulkheadException 4
* BulkheadException 5 CircuitBreakerOpenException 6 CircuitBreakerOpenException
*
* @throws InterruptedException
* if the test is interrupted
* @throws TimeoutException
* if waiting for a result takes too long
* @throws ExecutionException
* if an async method throws an unexpected exception
*/
@Test
public void testCircuitBreakerAroundBulkheadSync()
throws InterruptedException, ExecutionException, TimeoutException {
try (AsyncTaskManager taskManager = new AsyncTaskManager()) {
BarrierTask task1 = taskManager.runBarrierTask(syncBulkheadClient::test);
task1.assertAwaits();
// While circuit closed, we get a BulkheadException
for (int i = 2; i < 5; i++) {
BarrierTask taski = taskManager.runBarrierTask(syncBulkheadClient::test);
taski.assertThrows(BulkheadException.class);
}
// After circuit opens, we get CircuitBreakerOpenException
for (int i = 5; i < 7; i++) {
BarrierTask taski = taskManager.runBarrierTask(syncBulkheadClient::test);
taski.assertThrows(CircuitBreakerOpenException.class);
}
task1.openBarrier();
task1.assertSuccess();
}
}
/**
* A test to ensure that the CircuitBreaker does not open in response to a BulkheadException if {@code failOn} does
* not include BulkheadException
*
* Uses an asynchronous bulkhead
*
* With requestVolumeThreshold = 3, failureRatio = 1.0, delay = 50000, failOn=TestException the expected behaviour
* is,
*
* Execution Behaviour ========= ========= 1 Fill Bulkhead 2 Fill Bulkhead 3 BulkheadException 4 BulkheadException 5
* BulkheadException 6 BulkheadException 7 BulkheadException
*
* @throws InterruptedException
* if the test is interrupted
* @throws TimeoutException
* if waiting for a result takes too long
* @throws ExecutionException
* if an async method throws an unexpected exception
*/
@Test
public void testCircuitBreaker() throws InterruptedException, ExecutionException, TimeoutException {
try (AsyncTaskManager taskManager = new AsyncTaskManager()) {
BarrierTask task1 = taskManager.runAsyncBarrierTask(asyncBulkheadNoFailClient::test);
task1.assertAwaits();
BarrierTask task2 = taskManager.runAsyncBarrierTask(asyncBulkheadNoFailClient::test);
task2.assertNotAwaiting();
// While circuit closed, we get a BulkheadException
// Circuit should not open because failOn does not include BulkheadException
for (int i = 3; i < 8; i++) {
BarrierTask taski = taskManager.runAsyncBarrierTask(asyncBulkheadNoFailClient::test);
taski.assertThrows(BulkheadException.class);
}
task1.openBarrier();
task1.assertSuccess();
task2.openBarrier();
task2.assertSuccess();
}
}
}