@PackageScope
class PidInstrumentation {

    private final File pidFile = createPidFile()
    private final File pidFileInitScript = createPidFileInitScript(pidFile)

    List<String> getGradleArgs() {
        ["--init-script", pidFileInitScript.absolutePath]
    }

    String getPid() {
        pidFile.text
    }

    private static File createPidFile() {
        def pidFile = File.createTempFile("build-under-test", ".pid")

    fi
    if [ -n "$pidfile" ] && [ ! -e "$pidfile" ]; then
        touch "$pidfile" && chown "$FESS_USER":"$FESS_GROUP" "$pidfile"
    fi

    echo -n $"Starting $prog: "
    # if not running, start it up here, usually something like "daemon $exec"
    daemon --user $FESS_USER --pidfile="$pidfile" $exec -d
    retval=$?

        if [ x"$pidfile" != "x" ] ; then
            echo $! > $pidfile
        fi
        return $?
    fi
}

# Print command line usage / help
usage() {
    echo "Usage: $0 [-vdh] [-p pidfile] [-D prop] [-X prop]"
    echo "Start fess."
    echo "    -d            daemonize (run in background)"
    echo "    -p pidfile    write PID to <pidfile>"
    echo "    -h"

CONFDIR="/tmp/rsync.k8s"
PIDFILE="${CONFDIR}/rsyncd.pid"
CONFFILE="${CONFDIR}/rsyncd.conf"
SECRETS="${CONFDIR}/rsyncd.secrets"

mkdir -p "${CONFDIR}"

if [[ -f "${PIDFILE}" ]]; then
  PID=$(cat "${PIDFILE}")
  echo "Cleaning up old PID file: ${PIDFILE}"
  kill "${PID}" &> /dev/null || true
  rm "${PIDFILE}"
fi

PASSWORD=$(</rsyncd.password)

cat <<EOF >"${SECRETS}"

        """

        when:
        succeeds("compileJava")

        then:
        pidFile().exists()
        def pid1 = pidFile().text.strip() as long
        kill(pid1)

        when:
        args "--rerun-tasks"
        succeeds("compileJava")

        then:
        pidFile().exists()
        def pid2 = pidFile().text.strip() as long
        pid2 != pid1

        and:

        then:
        handler.waitForAllPendingCalls()

        then:
        cancelBuild()

        then:
        daemons.daemon.becomesIdle()

        and:
        pidFile().exists()
        def pid1 = pidFile().text.strip() as long
        new ProcessFixture(pid1).waitForFinish()

        when:
        handler = blockingHttpServer.expectAndBlock("/block")
        startBuild("compileJava")

        stdout.reset()
        stderr.reset()
        return executionOutput
    }

    def requestJstackForBuildProcess() {
        def pidFile = file("build/build.pid")
        if (pidFile.exists()) {
            def pid = pidFile.text
            def jdkBinDir = new File(System.getProperty("java.home"), "../bin").canonicalFile
            if (jdkBinDir.isDirectory() && new File(jdkBinDir, "jstack").exists()) {

	;;		
  stop)
	log_daemon_msg "Stopping $DESC"

	if [ -f "$PID_FILE" ]; then 
		start-stop-daemon --stop --pidfile "$PID_FILE" \
			--user "$FESS_USER" \
			--quiet \
			--retry forever/TERM/20 > /dev/null
		if [ $? -eq 1 ]; then
			log_progress_msg "$DESC is not running but pid file exists, cleaning up"
		elif [ $? -eq 3 ]; then
			PID="`cat $PID_FILE`"
			log_failure_msg "Failed to stop $DESC (pid $PID)"
			exit 1

org.codelibs.fess.FessBoot --StopClass org.codelibs.fess.FessBoot --StartMethod main --StopMethod shutdown --Classpath "%FESS_CLASSPATH%" --JvmSs %JVM_SS% --JvmMs %JVM_XMS% --JvmMx %JVM_XMX% --JvmOptions %JVM_OPTS% ++JvmOptions %FESS_PARAMS% %LOG_OPTS% --PidFile "%SERVICE_ID%.pid" --DisplayName "%SERVICE_DISPLAY_NAME%" --Description "%SERVICE_DESCRIPTION%" --Jvm "%%JAVA_HOME%%%JVM_DLL%" --StartMode jvm --StopMode jvm --StartPath "%FESS_HOME%" %SERVICE_PARAMS% ++StartParams start

if not errorlevel...

                inputs.file file("$triggerFileName")
                outputs.file "$idFileName"
                doLast {
                    def idFile = file("${idFileName}")
                    def service = services.get(${service})
                    idFile << System.identityHashCode(service) + "\\n"
                }
            }
        """

        when:
        triggerFile << "content"

        then: