Examples with PreferredSingletonElectionPolicy org.wildfly.clustering.singleton.election.PreferredSingletonElectionPolicy used on opensource projects

Example 1 with PreferredSingletonElectionPolicy

use of org.wildfly.clustering.singleton.election.PreferredSingletonElectionPolicy in project wildfly by wildfly.

the class SingletonServiceActivator method install.

private static void install(ServiceTarget target, SingletonServiceBuilderFactory factory, ServiceName name, String preferredNode) {
    InjectedValue<Group> group = new InjectedValue<>();
    NodeService service = new NodeService(group);
    factory.createSingletonServiceBuilder(name, service).electionPolicy(new PreferredSingletonElectionPolicy(new SimpleSingletonElectionPolicy(), new NamePreference(preferredNode))).build(target).addDependency(ServiceName.JBOSS.append("clustering", "group", "default"), Group.class, group).install();
}

Example 2 with PreferredSingletonElectionPolicy

use of org.wildfly.clustering.singleton.election.PreferredSingletonElectionPolicy in project wildfly by wildfly.

the class ElectionPolicyBuilder method build.

@Override
public ServiceBuilder<SingletonElectionPolicy> build(ServiceTarget target) {
    Value<SingletonElectionPolicy> value = () -> this.preferences.isEmpty() ? this.getValue() : new PreferredSingletonElectionPolicy(this.getValue(), this.preferences);
    ServiceBuilder<SingletonElectionPolicy> builder = target.addService(this.getServiceName(), new ValueService<>(value)).setInitialMode(ServiceController.Mode.ON_DEMAND);
    this.dependencies.forEach(dependency -> dependency.register(builder));
    return builder;
}

Example 3 with PreferredSingletonElectionPolicy

use of org.wildfly.clustering.singleton.election.PreferredSingletonElectionPolicy in project wildfly by wildfly.

the class NodeServiceActivator method install.

private static void install(ServiceTarget target, SingletonServiceBuilderFactory factory, ServiceName name, int quorum) {
    InjectedValue<Group> group = new InjectedValue<>();
    NodeService service = new NodeService(group);
    factory.createSingletonServiceBuilder(name, service).electionPolicy(new PreferredSingletonElectionPolicy(new SimpleSingletonElectionPolicy(), new NamePreference(PREFERRED_NODE))).requireQuorum(quorum).build(target).addDependency(ServiceName.parse("org.wildfly.clustering.default-group"), Group.class, group).install();
}

Example 4 with PreferredSingletonElectionPolicy

use of org.wildfly.clustering.singleton.election.PreferredSingletonElectionPolicy in project wildfly by wildfly.

the class PreferredSingletonElectionPolicyTestCase method elect.

@Test
public void elect() {
    SingletonElectionPolicy policy = mock(SingletonElectionPolicy.class);
    Preference preference1 = mock(Preference.class);
    Preference preference2 = mock(Preference.class);
    Node node1 = mock(Node.class);
    Node node2 = mock(Node.class);
    Node node3 = mock(Node.class);
    Node node4 = mock(Node.class);
    when(preference1.preferred(same(node1))).thenReturn(true);
    when(preference1.preferred(same(node2))).thenReturn(false);
    when(preference1.preferred(same(node3))).thenReturn(false);
    when(preference1.preferred(same(node4))).thenReturn(false);
    when(preference2.preferred(same(node1))).thenReturn(false);
    when(preference2.preferred(same(node2))).thenReturn(true);
    when(preference2.preferred(same(node3))).thenReturn(false);
    when(preference2.preferred(same(node4))).thenReturn(false);
    assertSame(node1, new PreferredSingletonElectionPolicy(policy, preference1, preference2).elect(Arrays.asList(node1, node2, node3, node4)));
    assertSame(node1, new PreferredSingletonElectionPolicy(policy, preference1, preference2).elect(Arrays.asList(node4, node3, node2, node1)));
    assertSame(node2, new PreferredSingletonElectionPolicy(policy, preference1, preference2).elect(Arrays.asList(node2, node3, node4)));
    assertSame(node2, new PreferredSingletonElectionPolicy(policy, preference1, preference2).elect(Arrays.asList(node4, node3, node2)));
    List<Node> nodes = Arrays.asList(node3, node4);
    when(policy.elect(nodes)).thenReturn(node3);
    assertSame(node3, new PreferredSingletonElectionPolicy(policy, preference1, preference2).elect(nodes));
    when(policy.elect(nodes)).thenReturn(node4);
    assertSame(node4, new PreferredSingletonElectionPolicy(policy, preference1, preference2).elect(nodes));
    when(policy.elect(nodes)).thenReturn(null);
    assertNull(new PreferredSingletonElectionPolicy(policy, preference1, preference2).elect(nodes));
}