78 lines
1.9 KiB
Java
78 lines
1.9 KiB
Java
/*
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* Copyright (C) 2015-2019 Lightbend Inc. <https://www.lightbend.com>
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*/
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package jdocs.cluster;
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import akka.testkit.javadsl.TestKit;
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import com.typesafe.config.ConfigFactory;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Set;
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import jdocs.AbstractJavaTest;
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import org.junit.AfterClass;
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import org.junit.BeforeClass;
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import org.junit.Test;
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// #join-seed-nodes-imports
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import akka.actor.Address;
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import akka.cluster.Cluster;
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// #join-seed-nodes-imports
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import akka.actor.ActorSystem;
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import akka.cluster.Member;
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public class ClusterDocTest extends AbstractJavaTest {
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static ActorSystem system;
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@BeforeClass
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public static void setup() {
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system =
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ActorSystem.create(
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"ClusterDocTest",
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ConfigFactory.parseString(scala.docs.cluster.ClusterDocSpec.config()));
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}
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@AfterClass
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public static void tearDown() {
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TestKit.shutdownActorSystem(system);
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system = null;
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}
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@Test
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public void demonstrateLeave() {
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// #leave
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final Cluster cluster = Cluster.get(system);
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cluster.leave(cluster.selfAddress());
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// #leave
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}
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// compile only
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@SuppressWarnings("unused")
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public void demonstrateDataCenter() {
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// #dcAccess
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final Cluster cluster = Cluster.get(system);
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// this node's data center
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String dc = cluster.selfDataCenter();
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// all known data centers
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Set<String> allDc = cluster.state().getAllDataCenters();
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// a specific member's data center
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Member aMember = cluster.state().getMembers().iterator().next();
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String aDc = aMember.dataCenter();
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// #dcAccess
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}
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// compile only
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@SuppressWarnings("unused")
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public void demonstrateJoinSeedNodes() {
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// #join-seed-nodes
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final Cluster cluster = Cluster.get(system);
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List<Address> list =
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new LinkedList<>(); // replace this with your method to dynamically get seed nodes
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cluster.joinSeedNodes(list);
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// #join-seed-nodes
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}
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}
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