| /* |
| * 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.policy.autoscaling; |
| |
| import com.google.common.collect.ImmutableList; |
| import org.apache.brooklyn.api.entity.Entity; |
| import org.apache.brooklyn.api.entity.EntitySpec; |
| import org.apache.brooklyn.api.policy.PolicySpec; |
| import org.apache.brooklyn.core.entity.Entities; |
| import org.apache.brooklyn.core.entity.EntityAsserts; |
| import org.apache.brooklyn.core.entity.trait.Resizable; |
| import org.apache.brooklyn.core.test.BrooklynAppUnitTestSupport; |
| import org.apache.brooklyn.core.test.entity.TestCluster; |
| import org.apache.brooklyn.core.test.entity.TestSizeRecordingCluster; |
| import org.apache.brooklyn.entity.stock.BasicStartable; |
| import org.apache.brooklyn.util.collections.MutableList; |
| import org.apache.brooklyn.util.time.Duration; |
| import org.apache.brooklyn.util.time.Time; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.testng.Assert; |
| import org.testng.annotations.AfterMethod; |
| import org.testng.annotations.BeforeMethod; |
| import org.testng.annotations.Test; |
| |
| import java.util.List; |
| |
| public class AutoScalerPolicyPoolSizeTest extends BrooklynAppUnitTestSupport { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(AutoScalerPolicyPoolSizeTest.class); |
| |
| private static final int CLUSTER_INIITIAL_SIZE = 3; |
| private static final int CLUSTER_MIN_SIZE = 2; |
| private static final int CLUSTER_MAX_SIZE = 4; |
| |
| AutoScalerPolicy policy; |
| TestSizeRecordingCluster cluster; |
| List<Integer> resizes = MutableList.of(); |
| |
| @BeforeMethod(alwaysRun = true) |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| LOG.info("resetting " + getClass().getSimpleName()); |
| cluster = app.createAndManageChild(EntitySpec.create(TestSizeRecordingCluster.class) |
| .configure(TestCluster.INITIAL_SIZE, CLUSTER_INIITIAL_SIZE) |
| .configure(TestCluster.MEMBER_SPEC, EntitySpec.create(BasicStartable.class)) |
| ); |
| PolicySpec<AutoScalerPolicy> policySpec = PolicySpec.create(AutoScalerPolicy.class) |
| .configure(AutoScalerPolicy.RESIZE_OPERATOR, new ResizeOperator() { |
| @Override |
| public Integer resize(Entity entity, Integer desiredSize) { |
| LOG.info("test policy resizing to " + desiredSize); |
| resizes.add(desiredSize); |
| return ((Resizable) entity).resize(desiredSize); |
| } |
| }) |
| .configure(AutoScalerPolicy.MIN_POOL_SIZE, CLUSTER_MIN_SIZE) |
| .configure(AutoScalerPolicy.MAX_POOL_SIZE, CLUSTER_MAX_SIZE); |
| policy = cluster.policies().add(policySpec); |
| app.start(ImmutableList.of()); |
| } |
| |
| @AfterMethod(alwaysRun = true) |
| public void tearDown() throws Exception { |
| try { |
| if (policy != null) policy.destroy(); |
| } finally { |
| super.tearDown(); |
| cluster = null; |
| policy = null; |
| } |
| } |
| |
| @Test |
| public void testResizeUp() throws Exception { |
| EntityAsserts.assertAttributeEqualsEventually(cluster, TestCluster.GROUP_SIZE, CLUSTER_INIITIAL_SIZE); |
| // Simulate user expunging the entities manually |
| for (int i = 0; i < CLUSTER_MAX_SIZE - CLUSTER_MIN_SIZE; i++) { |
| Entities.destroyCatching(cluster.getMembers().iterator().next(), true); |
| } |
| EntityAsserts.assertAttributeEqualsEventually(cluster, TestSizeRecordingCluster.SIZE_HISTORY_RECORD_COUNT, 2); |
| Assert.assertEquals((int)cluster.getSizeHistory().get(0), CLUSTER_INIITIAL_SIZE); |
| Assert.assertEquals((int)cluster.getSizeHistory().get(1), CLUSTER_MIN_SIZE); |
| } |
| |
| @Test |
| public void testResizeDown() throws Exception { |
| EntityAsserts.assertAttributeEqualsEventually(cluster, TestCluster.GROUP_SIZE, CLUSTER_INIITIAL_SIZE); |
| // temporarily increase, otherwise the policy can sometimes kick in to resize down before size 6 is reached |
| policy.config().set(AutoScalerPolicy.MAX_POOL_SIZE, CLUSTER_MAX_SIZE + 2); |
| cluster.resize(CLUSTER_MAX_SIZE + 2); |
| EntityAsserts.assertAttributeEqualsEventually(cluster, TestSizeRecordingCluster.SIZE_HISTORY_RECORD_COUNT, 2); |
| Assert.assertEquals((int)cluster.getSizeHistory().get(0), CLUSTER_INIITIAL_SIZE, "history: "+cluster.getSizeHistory()); |
| Assert.assertEquals((int)cluster.getSizeHistory().get(1), CLUSTER_MAX_SIZE + 2, "history: "+cluster.getSizeHistory()); |
| |
| policy.config().set(AutoScalerPolicy.MIN_POOL_SIZE, CLUSTER_MAX_SIZE); |
| policy.config().set(AutoScalerPolicy.MAX_POOL_SIZE, CLUSTER_MAX_SIZE); |
| EntityAsserts.assertAttributeEqualsEventually(cluster, TestSizeRecordingCluster.SIZE_HISTORY_RECORD_COUNT, 3); |
| Assert.assertEquals((int)cluster.getSizeHistory().get(0), CLUSTER_INIITIAL_SIZE, "history: "+cluster.getSizeHistory()); |
| Assert.assertEquals((int)cluster.getSizeHistory().get(1), CLUSTER_MAX_SIZE + 2, "history: "+cluster.getSizeHistory()); |
| Assert.assertEquals((int)cluster.getSizeHistory().get(2), CLUSTER_MAX_SIZE, "history: "+cluster.getSizeHistory()); |
| } |
| } |