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Merge pull request #398 from mesos/testing/354-JarSystemTest
Testing/354 jar system test
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...est/src/systemTest/java/org/apache/mesos/elasticsearch/systemtest/RunAsJarSystemTest.java
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| package org.apache.mesos.elasticsearch.systemtest; | ||
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| import com.containersol.minimesos.MesosCluster; | ||
| import com.containersol.minimesos.container.AbstractContainer; | ||
| import com.containersol.minimesos.mesos.*; | ||
| import com.github.dockerjava.api.DockerClient; | ||
| import com.github.dockerjava.api.command.CreateContainerCmd; | ||
| import com.github.dockerjava.api.model.ExposedPort; | ||
| import com.github.dockerjava.api.model.Link; | ||
| import com.github.dockerjava.api.model.Ports; | ||
| import org.apache.mesos.elasticsearch.common.cli.ElasticsearchCLIParameter; | ||
| import org.apache.mesos.elasticsearch.common.cli.ZookeeperCLIParameter; | ||
| import org.apache.mesos.elasticsearch.scheduler.Configuration; | ||
| import org.apache.mesos.elasticsearch.systemtest.callbacks.ElasticsearchNodesResponse; | ||
| import org.apache.mesos.elasticsearch.systemtest.util.DockerUtil; | ||
| import org.junit.*; | ||
| import org.junit.rules.TestWatcher; | ||
| import org.junit.runner.Description; | ||
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| import java.io.IOException; | ||
| import java.security.SecureRandom; | ||
| import java.util.stream.IntStream; | ||
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| import static org.apache.mesos.elasticsearch.systemtest.Configuration.getDocker0AdaptorIpAddress; | ||
| import static org.junit.Assert.assertTrue; | ||
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| /** | ||
| * A system test to ensure that the framework can run as a JAR, not using docker. | ||
| * <p> | ||
| * <b>Test method</b> | ||
| * <p> | ||
| * The goal is to start the framework in jar mode, and ensure that the system can still be discovered. | ||
| * We still start the scheduler in the container (but with jar mode enabled) because the system running the system | ||
| * test may not have Java 8 installed. But this is no issue; the test is exactly the same. | ||
| * </p><p> | ||
| * Next, a custom MesosSlave is provided so that it can resolve the IP address of the scheduler (which is hosting | ||
| * the executor jar). Its own hostname is set to "hostnamehack" so that it can be resolved on the scheduler side. | ||
| * The ES port (31000 in this case) is bound to the host, where the host is the VM or linux OS. This will allow us | ||
| * to curl the ES endpoint without knowing the IP address of the slave container. | ||
| * </p><p> | ||
| * The scheduler has an extra host called "hostnamehack" that resolves to the docker0 adaptor address. This is | ||
| * equivalent to the VM/linux localhost, is known ahead of time and is system independent. I.e. both Mac's and linux | ||
| * boxes will be able to resolve this address. The port is the same. | ||
| * </p><p> | ||
| * So finally, the ES system tests can cary on as normal and resolve the ES hosts. Nice! | ||
| * </p> | ||
| */ | ||
| @SuppressWarnings({"PMD.TooManyMethods"}) | ||
| public class RunAsJarSystemTest { | ||
| protected static final org.apache.mesos.elasticsearch.systemtest.Configuration TEST_CONFIG = new org.apache.mesos.elasticsearch.systemtest.Configuration(); | ||
| private static final int NUMBER_OF_TEST_TASKS = 1; | ||
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| // Need full control over the cluster, so need to do all the lifecycle stuff. | ||
| private MesosCluster cluster; | ||
| private static DockerClient dockerClient = DockerClientFactory.build(); | ||
| private JarScheduler scheduler; | ||
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| @BeforeClass | ||
| public static void prepareCleanDockerEnvironment() { | ||
| new DockerUtil(dockerClient).killAllSchedulers(); | ||
| new DockerUtil(dockerClient).killAllExecutors(); | ||
| } | ||
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| @Rule | ||
| public final TestWatcher WATCHER = new TestWatcher() { | ||
| @Override | ||
| protected void failed(Throwable e, Description description) { | ||
| cluster.stop(); | ||
| } | ||
| }; | ||
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| @Before | ||
| public void before() { | ||
| ClusterArchitecture.Builder builder = new ClusterArchitecture.Builder() | ||
| .withZooKeeper() | ||
| .withMaster() | ||
| .withSlave() // Have to have a slave before we build. Bit of a minimesos bug. This offer wont get accepted. | ||
| .withContainer(zkContainer -> new JarScheduler(dockerClient, zkContainer), ClusterContainers.Filter.zooKeeper()); | ||
| scheduler = (JarScheduler) builder.build().getClusterContainers().getOne(container -> container instanceof JarScheduler).get(); | ||
| IntStream.range(0, NUMBER_OF_TEST_TASKS).forEach(dummy -> | ||
| builder.withSlave(zooKeeper -> new MesosSlaveWithSchedulerLink(dockerClient, zooKeeper, scheduler)) | ||
| ); | ||
| cluster = new MesosCluster(builder.build()); | ||
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| cluster.start(); | ||
| } | ||
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| @After | ||
| public void stopContainer() { | ||
| cluster.stop(); | ||
| } | ||
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| @AfterClass | ||
| public static void killAllContainers() { | ||
| new DockerUtil(dockerClient).killAllSchedulers(); | ||
| new DockerUtil(dockerClient).killAllExecutors(); | ||
| } | ||
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| @Test | ||
| public void shouldStartScheduler() throws IOException, InterruptedException { | ||
| ESTasks esTasks = new ESTasks(TEST_CONFIG, scheduler.getIpAddress()); | ||
| new TasksResponse(esTasks, NUMBER_OF_TEST_TASKS); | ||
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| ElasticsearchNodesResponse nodesResponse = new ElasticsearchNodesResponse(esTasks, NUMBER_OF_TEST_TASKS); | ||
| assertTrue("Elasticsearch nodes did not discover each other within 5 minutes", nodesResponse.isDiscoverySuccessful()); | ||
| } | ||
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| private static class JarScheduler extends AbstractContainer { | ||
| private final ZooKeeper zooKeeperContainer; | ||
| private String docker0AdaptorIpAddress; | ||
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| protected JarScheduler(DockerClient dockerClient, ZooKeeper zooKeeperContainer) { | ||
| super(dockerClient); | ||
| this.zooKeeperContainer = zooKeeperContainer; | ||
| docker0AdaptorIpAddress = getDocker0AdaptorIpAddress(dockerClient); | ||
| } | ||
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| @Override | ||
| public void pullImage() { | ||
| dockerClient.pullImageCmd(TEST_CONFIG.getSchedulerImageName()); | ||
| } | ||
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| @Override | ||
| protected CreateContainerCmd dockerCommand() { | ||
| return dockerClient | ||
| .createContainerCmd(TEST_CONFIG.getSchedulerImageName()) | ||
| .withName(TEST_CONFIG.getSchedulerName() + "_" + MesosCluster.getClusterId() + "_" + new SecureRandom().nextInt()) | ||
| .withEnv("JAVA_OPTS=-Xms128m -Xmx256m") | ||
| .withExtraHosts("hostnamehack:" + docker0AdaptorIpAddress) // Will redirect hostnamehack to host IP address (where ports are bound) | ||
| .withCmd( | ||
| ZookeeperCLIParameter.ZOOKEEPER_MESOS_URL, getZookeeperMesosUrl(), | ||
| Configuration.FRAMEWORK_USE_DOCKER, "false", | ||
| ElasticsearchCLIParameter.ELASTICSEARCH_NODES, String.valueOf(NUMBER_OF_TEST_TASKS), | ||
| Configuration.ELASTICSEARCH_CPU, "0.1", | ||
| Configuration.ELASTICSEARCH_RAM, "128", | ||
| Configuration.ELASTICSEARCH_DISK, "10", | ||
| Configuration.JAVA_HOME, "/usr/bin" | ||
| ); | ||
| } | ||
| public String getZookeeperMesosUrl() { | ||
| return "zk://" + zooKeeperContainer.getIpAddress() + ":2181/mesos"; | ||
| } | ||
| } | ||
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| private static class MesosSlaveWithSchedulerLink extends MesosSlave { | ||
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| private final JarScheduler scheduler; | ||
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| protected MesosSlaveWithSchedulerLink(DockerClient dockerClient, ZooKeeper zooKeeperContainer, JarScheduler scheduler) { | ||
| super(dockerClient, zooKeeperContainer); | ||
| this.scheduler = scheduler; | ||
| } | ||
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| @Override | ||
| protected CreateContainerCmd dockerCommand() { | ||
| CreateContainerCmd createContainerCmd = super.dockerCommand(); | ||
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| Ports ports = new Ports(); | ||
| ports.bind(ExposedPort.tcp(31000), Ports.Binding(31000)); | ||
| createContainerCmd | ||
| .withHostName("hostnamehack") // Hack to get past offer refusal | ||
| .withLinks(new Link(scheduler.getContainerId(), scheduler.getContainerId())) | ||
| .withExposedPorts(new ExposedPort(31000), new ExposedPort(5051)) | ||
| .withPortBindings(ports) | ||
| ; | ||
| return createContainerCmd; | ||
| } | ||
| } | ||
| } |