content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio;
  
  /**
   * Interface representing an Alluxio process.
   */
  public interface Process {
  
    /**
     * Starts the Alluxio process. This call blocks until the process is stopped via {@link #stop()}.
     * The {@link #waitForReady(int)} method can be used to make sure that the process is ready to
     * serve requests.
     */
    void start() throws Exception;
  
    /**
     * Stops the Alluxio process, blocking until the action is completed.
     */
    void stop() throws Exception;
  
    /**
     * Waits until the process is ready to serve requests.
     *
     * @param timeoutMs how long to wait in milliseconds
     * @return whether the process became ready before the specified timeout
     */
    // TODO(jiri): Replace with isServing.
    boolean waitForReady(int timeoutMs);
  }
  