| /* |
| * 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.brooklyn.entity.webapp; |
| |
| import static org.apache.brooklyn.test.HttpTestUtils.connectToUrl; |
| import static org.testng.Assert.assertEquals; |
| import static org.testng.Assert.assertTrue; |
| |
| import org.apache.brooklyn.api.entity.EntitySpec; |
| import org.apache.brooklyn.api.location.LocationSpec; |
| import org.apache.brooklyn.api.mgmt.ManagementContext; |
| import org.apache.brooklyn.core.entity.Entities; |
| import org.apache.brooklyn.core.test.entity.TestApplication; |
| import org.apache.brooklyn.entity.webapp.tomcat.TomcatServer; |
| import org.apache.brooklyn.entity.webapp.tomcat.TomcatServerImpl; |
| import org.apache.brooklyn.test.Asserts; |
| import org.apache.brooklyn.util.collections.MutableMap; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.testng.annotations.AfterMethod; |
| import org.testng.annotations.BeforeMethod; |
| import org.testng.annotations.Test; |
| import org.apache.brooklyn.location.localhost.LocalhostMachineProvisioningLocation; |
| import org.apache.brooklyn.policy.autoscaling.AutoScalerPolicy; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Iterables; |
| |
| public class TomcatAutoScalerPolicyTest { |
| |
| @SuppressWarnings("unused") |
| private static final Logger LOG = LoggerFactory.getLogger(TomcatAutoScalerPolicyTest.class); |
| |
| // TODO Test is time-sensitive: we send two web-requests in rapid succession, and expect the average workrate to |
| // be 2 msgs/sec; we then expect resizing to kick-in. |
| // P speculate that... if for some reason things are running slow (e.g. GC during that one second), then brooklyn |
| // may not report the 2 msgs/sec. |
| |
| private LocalhostMachineProvisioningLocation loc; |
| private TestApplication app; |
| private ManagementContext managementContext; |
| |
| @BeforeMethod(alwaysRun=true) |
| public void setUp() throws Exception { |
| app = TestApplication.Factory.newManagedInstanceForTests(); |
| managementContext = app.getManagementContext(); |
| loc = managementContext.getLocationManager().createLocation(LocationSpec.create(LocalhostMachineProvisioningLocation.class) |
| .configure("name", "london")); |
| } |
| |
| @AfterMethod(alwaysRun=true) |
| public void tearDown() throws Exception { |
| if (app != null) Entities.destroyAll(app.getManagementContext()); |
| } |
| |
| @Test(groups="Integration") |
| public void testWithTomcatServers() throws Exception { |
| /* |
| * One DynamicWebAppClster with auto-scaler policy |
| * AutoScaler listening to DynamicWebAppCluster.TOTAL_REQS |
| * AutoScaler minSize 1 |
| * AutoScaler upper metric 1 |
| * AutoScaler lower metric 0 |
| * .. send one request |
| * wait til auto-scaling complete |
| * assert cluster size 2 |
| */ |
| |
| final DynamicWebAppCluster cluster = app.createAndManageChild(EntitySpec.create(DynamicWebAppCluster.class) |
| .configure(DynamicWebAppCluster.INITIAL_SIZE, 1) |
| .configure(DynamicWebAppCluster.MEMBER_SPEC, EntitySpec.create(TomcatServer.class))); |
| |
| final AutoScalerPolicy policy = AutoScalerPolicy.builder() |
| .metric(DynamicWebAppCluster.REQUEST_COUNT_PER_NODE) |
| .metricRange(0, 1) |
| .minPoolSize(1) |
| .build(); |
| cluster.policies().add(policy); |
| |
| app.start(ImmutableList.of(loc)); |
| |
| assertEquals(cluster.getCurrentSize(), (Integer)1); |
| |
| // Scaling based on *total requests* processed, rather than the requests per second. |
| // So just hit it with 2 requests. |
| // Alternatively could hit each tomcat server's URL twice per second; but that's less deterministic. |
| TomcatServer tc = (TomcatServer) Iterables.getOnlyElement(cluster.getMembers()); |
| for (int i = 0; i < 2; i++) { |
| connectToUrl(tc.getAttribute(TomcatServerImpl.ROOT_URL)); |
| } |
| |
| // We'll scale to two members as soon as the policy detects it. |
| // But the second member won't count in the requests-per-node until it has started up. |
| // Expect to see (if we polled at convenient times): |
| // - zero requests per node (because haven't yet retrieved over JMX the metric) |
| // - two requests per node, with one member |
| // - two requests per node, with two members (one of whom is still starting up, so doesn't count) |
| // - one request per node (i.e. two divided across the two active members) |
| Asserts.succeedsEventually(MutableMap.of("timeout", 5*60*1000), new Runnable() { |
| @Override public void run() { |
| String err = "policy="+policy.isRunning()+"; size="+cluster.getCurrentSize()+"; reqCountPerNode="+cluster.getAttribute(DynamicWebAppCluster.REQUEST_COUNT_PER_NODE); |
| assertTrue(policy.isRunning(), "err="+err); |
| assertEquals(cluster.getCurrentSize(), (Integer)2, "err="+err); |
| assertEquals(cluster.getAttribute(DynamicWebAppCluster.REQUEST_COUNT_PER_NODE), 1.0d, "err="+err); |
| }}); |
| } |
| } |