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package org.apache.impala.customservice;

import java.io.IOException;

/**
 * Runs a minicluster component with custom flags.
 *
 * In order to prevent this from affecting other tests, we filter on the package name
 * to run FE custom cluster tests when we run the python custom cluster tests, so this
 * should not be used outside of this package.
 */
class CustomServiceRunner {

  /**
   *  Restarts a specified minicluster component (e.g kudu) in a separate process
   *  with the specified environment.
   */
  public static int RestartMiniclusterComponent(String component,
      String[] envp) throws IOException, InterruptedException {
    String command = System.getenv().get("IMPALA_HOME") +
        "/testdata/cluster/admin restart " + component;
    Process p = Runtime.getRuntime().exec(command, envp);
    p.waitFor();
    return p.exitValue();
  }
}