io.vlingo.xoom.cluster.model.Cluster Maven / Gradle / Ivy

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// Copyright © 2012-2022 VLINGO LABS. All rights reserved.
//
// This Source Code Form is subject to the terms of the
// Mozilla Public License, v. 2.0. If a copy of the MPL
// was not distributed with this file, You can obtain
// one at https://mozilla.org/MPL/2.0/.

package io.vlingo.xoom.cluster.model;

import io.vlingo.xoom.actors.Logger;
import io.vlingo.xoom.actors.Stage;
import io.vlingo.xoom.actors.World;
import io.vlingo.xoom.cluster.model.application.ClusterApplication.ClusterApplicationInstantiator;
import io.vlingo.xoom.common.Tuple2;

import java.util.UUID;

public final class Cluster {
  static final String INTERNAL_NAME = UUID.randomUUID().toString();

  public static synchronized Tuple2 controlFor(
          final ClusterApplicationInstantiator instantiator,
          final Properties properties,
          final String nodeName) {
    return controlFor(World.start("xoom-cluster"), instantiator, properties, nodeName);
  }

  public static synchronized Tuple2 controlFor(
          final World world,
          final ClusterApplicationInstantiator instantiator,
          final Properties properties,
          final String nodeName) {
    return controlFor(world, world.stage(), instantiator, properties, nodeName);
  }

  public static synchronized Tuple2 controlFor(
          final World world,
          final Stage stage,
          final ClusterApplicationInstantiator instantiator,
          final Properties properties,
          final String nodeName) {

    if (isRunningInside(world)) {
      throw new IllegalArgumentException("Cluster is already running inside World: " + world.name());
    }

    final Tuple2 control = ClusterControl.instance(world, instantiator, properties, nodeName);

    world.registerDynamic(INTERNAL_NAME, control._1);

    return control;
  }

  public static boolean isRunningInside(final World world) {
    return world.resolveDynamic(INTERNAL_NAME, ClusterControl.class) != null;
  }
}