Camel-hystrix test, which checks if the Hystrix in the route is short-circuited after some errors.
Project: http://git-wip-us.apache.org/repos/asf/camel/repo Commit: http://git-wip-us.apache.org/repos/asf/camel/commit/68bee1f2 Tree: http://git-wip-us.apache.org/repos/asf/camel/tree/68bee1f2 Diff: http://git-wip-us.apache.org/repos/asf/camel/diff/68bee1f2 Branch: refs/heads/camel-2.18.x Commit: 68bee1f2caaea2051fe17e6667e694357a38ffa0 Parents: 4f0d96e Author: Anton Krosnev <anton.kros...@ocado.com> Authored: Sun May 14 15:09:18 2017 +0300 Committer: Claus Ibsen <davscl...@apache.org> Committed: Tue May 16 12:30:39 2017 +0200 ---------------------------------------------------------------------- .../processor/HystrixCircutExceptionTest.java | 126 +++++++++++++++++++ 1 file changed, 126 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/camel/blob/68bee1f2/components/camel-hystrix/src/test/java/org/apache/camel/component/hystrix/processor/HystrixCircutExceptionTest.java ---------------------------------------------------------------------- diff --git a/components/camel-hystrix/src/test/java/org/apache/camel/component/hystrix/processor/HystrixCircutExceptionTest.java b/components/camel-hystrix/src/test/java/org/apache/camel/component/hystrix/processor/HystrixCircutExceptionTest.java new file mode 100644 index 0000000..4fcec81 --- /dev/null +++ b/components/camel-hystrix/src/test/java/org/apache/camel/component/hystrix/processor/HystrixCircutExceptionTest.java @@ -0,0 +1,126 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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.apache.camel.component.hystrix.processor; + +import static org.apache.camel.component.hystrix.processor.HystrixConstants.HYSTRIX_RESPONSE_SHORT_CIRCUITED; + +import java.io.IOException; +import java.util.concurrent.TimeoutException; +import java.util.concurrent.atomic.AtomicBoolean; + +import org.apache.camel.CamelExecutionException; +import org.apache.camel.Exchange; +import org.apache.camel.Processor; +import org.apache.camel.RoutesBuilder; +import org.apache.camel.builder.RouteBuilder; +import org.apache.camel.test.junit4.CamelTestSupport; +import org.junit.Test; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Hystrix using timeout with Java DSL + */ +public class HystrixCircutExceptionTest extends CamelTestSupport { + public static final Integer REQUEST_VOLUME_THRESHOLD = 4; + private static final Logger LOG = LoggerFactory.getLogger(HystrixCircutExceptionTest.class); + + HystrixExceptionRoute route = new HystrixExceptionRoute(); + + + @Test + public void testCurcuitOpen() throws Exception{ + LOG.info("testCurcuitOpen start"); + // failing requests + route.throwException = true; + for (int i = 0; i < 2* REQUEST_VOLUME_THRESHOLD; i++) { + try { + template.asyncRequestBody("direct:start", "Request Body"); + } catch (CamelExecutionException e) { + LOG.info(e.toString()); + } + } + Thread.sleep(1500); + route.throwException = false; + try { + template.requestBody("direct:start", "Request Body"); + LOG.info("Instead curcuit open expected"); + } catch (CamelExecutionException e) { + LOG.info("Curcuit open expected ", e); + } + getMockEndpoint("mock:result").expectedPropertyReceived(HystrixConstants.HYSTRIX_RESPONSE_SHORT_CIRCUITED, true); + assertMockEndpointsSatisfied(); + // wait for the circuit to try an other request + Thread.sleep(500); + for (int i = 0; i < 2* REQUEST_VOLUME_THRESHOLD; i++) { + try { + template.requestBody("direct:start", "Request Body"); + LOG.info("Curcuit has closed"); + } catch (CamelExecutionException e) { + Thread.sleep(i*100); + LOG.info("Curcuit will be closed soon "+ e.toString()); + } + } + template.requestBody("direct:start", "Request Body"); + getMockEndpoint("mock:result").expectedPropertyReceived(HystrixConstants.HYSTRIX_RESPONSE_SHORT_CIRCUITED, false); + getMockEndpoint("mock:result").expectedPropertyReceived(HystrixConstants.HYSTRIX_RESPONSE_SUCCESSFUL_EXECUTION, true); + assertMockEndpointsSatisfied(); + } + + @Override + protected RoutesBuilder createRouteBuilder() throws Exception { + return route; + } + + + + class HystrixExceptionRoute extends RouteBuilder{ + volatile boolean throwException = true; + + @Override + public void configure() throws Exception { + from("direct:start") + .hystrix() + .hystrixConfiguration() + .executionTimeoutInMilliseconds(100) + .circuitBreakerRequestVolumeThreshold(REQUEST_VOLUME_THRESHOLD) + .metricsRollingStatisticalWindowInMilliseconds(1000) + .circuitBreakerSleepWindowInMilliseconds(2000) + .end() + .log("Hystrix processing start: ${threadName}") + .process(new Processor() { + @Override + public void process(Exchange exchange) throws Exception { + if(throwException){ + LOG.info("Will throw exception"); + throw new IOException("Route has failed"); + //Thread.sleep(200); + }else{ + LOG.info("Will NOT throw exception"); + } + } + }) + .log("Hystrix processing end: ${threadName}") + .end() + .log(HYSTRIX_RESPONSE_SHORT_CIRCUITED + +" = ${exchangeProperty."+HYSTRIX_RESPONSE_SHORT_CIRCUITED+"}") + .to("mock:result"); + + } + } +} +
