Java tutorial
/* * 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 brooklyn.qa.load; import static brooklyn.event.basic.DependentConfiguration.attributeWhenReady; import static brooklyn.event.basic.DependentConfiguration.formatString; import java.util.Collection; import java.util.List; import brooklyn.config.ConfigKey; import brooklyn.enricher.Enrichers; import brooklyn.enricher.HttpLatencyDetector; import brooklyn.entity.basic.AbstractApplication; import brooklyn.entity.basic.Attributes; import brooklyn.entity.basic.ConfigKeys; import brooklyn.entity.basic.Entities; import brooklyn.entity.basic.StartableApplication; import brooklyn.entity.database.mysql.MySqlNode; import brooklyn.entity.group.DynamicCluster; import brooklyn.entity.java.JavaEntityMethods; import brooklyn.entity.proxy.nginx.NginxController; import brooklyn.entity.proxying.EntitySpec; import brooklyn.entity.trait.Startable; import brooklyn.entity.webapp.ControlledDynamicWebAppCluster; import brooklyn.entity.webapp.DynamicWebAppCluster; import brooklyn.entity.webapp.JavaWebAppService; import brooklyn.entity.webapp.WebAppService; import brooklyn.entity.webapp.WebAppServiceConstants; import brooklyn.entity.webapp.jboss.JBoss7Server; import brooklyn.launcher.BrooklynLauncher; import brooklyn.location.basic.PortRanges; import brooklyn.policy.autoscaling.AutoScalerPolicy; import brooklyn.util.CommandLineUtil; import brooklyn.util.collections.MutableSet; import com.google.common.base.Function; import com.google.common.collect.ImmutableList; import com.google.common.collect.ImmutableSet; import com.google.common.collect.Lists; /** * A 3-tier app where all components are just "simulated" - they don't actually run * real app-servers or databases, instead just executing a "sleep" command to simulate * the running process. * * This is useful for load testing, where we want to test the performance of Brooklyn * rather than the ability to host many running app-servers. * * The app is based on WebClusterDatabaseExampleApp * * @see SimulatedJBoss7ServerImpl for description of purpose and configuration options. */ public class SimulatedTheeTierApp extends AbstractApplication { public static final ConfigKey<Boolean> SIMULATE_ENTITY = ConfigKeys.newBooleanConfigKey("simulateEntity", "", true); public static final ConfigKey<Boolean> SIMULATE_EXTERNAL_MONITORING = ConfigKeys .newBooleanConfigKey("simulateExternalMonitoring", "", true); public static final ConfigKey<Boolean> SKIP_SSH_ON_START = ConfigKeys.newBooleanConfigKey("skipSshOnStart", "", false); public static final String WAR_PATH = "classpath://hello-world.war"; public static final String DB_TABLE = "visitors"; public static final String DB_USERNAME = "brooklyn"; public static final String DB_PASSWORD = "br00k11n"; public static final boolean USE_HTTPS = false; @Override public void init() { MySqlNode mysql = addChild(EntitySpec.create(MySqlNode.class).impl(SimulatedMySqlNodeImpl.class)); ControlledDynamicWebAppCluster web = addChild(EntitySpec.create(ControlledDynamicWebAppCluster.class) .configure(ControlledDynamicWebAppCluster.MEMBER_SPEC, EntitySpec.create(JBoss7Server.class).impl(SimulatedJBoss7ServerImpl.class)) .configure(ControlledDynamicWebAppCluster.CONTROLLER_SPEC, EntitySpec.create(NginxController.class).impl(SimulatedNginxControllerImpl.class)) .configure(WebAppService.HTTP_PORT, PortRanges.fromString("8080+")) .configure(JavaWebAppService.ROOT_WAR, WAR_PATH) .configure(JavaEntityMethods.javaSysProp("brooklyn.example.db.url"), formatString("jdbc:%s%s?user=%s\\&password=%s", attributeWhenReady(mysql, MySqlNode.DATASTORE_URL), DB_TABLE, DB_USERNAME, DB_PASSWORD)) .configure(DynamicCluster.INITIAL_SIZE, 2) .configure(WebAppService.ENABLED_PROTOCOLS, ImmutableSet.of(USE_HTTPS ? "https" : "http"))); web.getCluster() .addPolicy(AutoScalerPolicy.builder() .metric(DynamicWebAppCluster.REQUESTS_PER_SECOND_IN_WINDOW_PER_NODE).metricRange(10, 100) .sizeRange(2, 5).build()); addEnricher(Enrichers.builder() .propagating(Attributes.MAIN_URI, WebAppServiceConstants.ROOT_URL, DynamicWebAppCluster.REQUESTS_PER_SECOND_IN_WINDOW, HttpLatencyDetector.REQUEST_LATENCY_IN_SECONDS_IN_WINDOW) .from(web).build()); addEnricher(Enrichers.builder().aggregating(Startable.SERVICE_UP).publishing(Startable.SERVICE_UP) .fromHardcodedProducers(ImmutableList.of(web, mysql)) .computing(new Function<Collection<Boolean>, Boolean>() { @Override public Boolean apply(Collection<Boolean> input) { return input != null && input.size() == 2 && MutableSet.copyOf(input).equals(ImmutableSet.of(true)); } }).build()); } public static void main(String[] argv) { List<String> args = Lists.newArrayList(argv); String port = CommandLineUtil.getCommandLineOption(args, "--port", "8081+"); String location = CommandLineUtil.getCommandLineOption(args, "--location", "localhost"); BrooklynLauncher launcher = BrooklynLauncher.newInstance() .application(EntitySpec.create(StartableApplication.class, SimulatedTheeTierApp.class) .displayName("Brooklyn WebApp Cluster with Database example")) .webconsolePort(port).location(location).start(); Entities.dumpInfo(launcher.getApplications()); } }