package water.api;

/**
 * Created by tomk on 5/19/14.
 */
public class KillMinus3 extends Request {

  private static String getProcessId() throws Exception {
    // Note: may fail in some JVM implementations
    // therefore fallback has to be provided

    // something like '<pid>@<hostname>', at least in SUN / Oracle JVMs
    final String jvmName = java.lang.management.ManagementFactory.getRuntimeMXBean().getName();
    final int index = jvmName.indexOf('@');

    if (index < 1) {
      // part before '@' empty (index = 0) / '@' not found (index = -1)
      throw new Exception ("Can't get process Id");
    }

    return Long.toString(Long.parseLong(jvmName.substring(0, index)));
  }

  @Override public Response serve(){
    try {
      String cmd = "/bin/kill -3 " + getProcessId();
      java.lang.Runtime.getRuntime().exec(cmd);
    }
    catch (Exception xe) {}

    return Response.doneEmpty();
  }
}