content: /*
   * Copyright (C) 2020 ActiveJ LLC.
   *
   * Licensed 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 io.activej.async.service;
  
  import io.activej.promise.Promise;
  import io.activej.reactor.Reactive;
  
  import java.util.concurrent.CompletableFuture;
  
  /**
   * This interface is for services that can be started and then stopped
   * in the context of reactor, so it works with {@link Promise}
   */
  public interface ReactiveService extends Reactive {
  	/**
  	 * Starts this component asynchronously.
  	 * Callback completes immediately if the component is already running.
  	 */
  	Promise<?> start();
  
  	default CompletableFuture<?> startFuture() {
  		return getReactor().submit(this::start);
  	}
  
  	/**
  	 * Stops this component asynchronously.
  	 * Callback completes immediately if the component is not running / already stopped.
  	 */
  	Promise<?> stop();
  
  	default CompletableFuture<?> stopFuture() {
  		return getReactor().submit(this::stop);
  	}
  }
  