Simplify init script

debian/clickhouse-server.init

@@ -160,82 +160,19 @@ initdb()
 
 start()
 {
-    [ -x $CLICKHOUSE_BINDIR/$PROGRAM ] || exit 0
+    ${CLICKHOUSE_GENERIC_PROGRAM} start --user "${CLICKHOUSE_USER}" --pid-path "${CLICKHOUSE_PIDDIR}" --config-path "${CLICKHOUSE_CONFDIR}" --binary-path "${CLICKHOUSE_BINDIR}/${PROGRAM}"
-    local EXIT_STATUS
-    EXIT_STATUS=0
-
-    echo -n "Start $PROGRAM service: "
-
-    if is_running; then
-        echo -n "already running "
-        EXIT_STATUS=1
-    else
-        ulimit -n 262144
-        mkdir -p $CLICKHOUSE_PIDDIR
-        chown -R $CLICKHOUSE_USER:$CLICKHOUSE_GROUP $CLICKHOUSE_PIDDIR
-        initdb
-        if ! is_running; then
-            # Lock should not be held while running child process, so we release the lock. Note: obviously, there is race condition.
-            # But clickhouse-server has protection from simultaneous runs with same data directory.
-            su -s $SHELL ${CLICKHOUSE_USER} -c "$FLOCK -u 9; $CLICKHOUSE_PROGRAM_ENV exec -a \"$PROGRAM\" \"$CLICKHOUSE_BINDIR/$PROGRAM\" --daemon --pid-file=\"$CLICKHOUSE_PIDFILE\" --config-file=\"$CLICKHOUSE_CONFIG\""
-            EXIT_STATUS=$?
-            if [ $EXIT_STATUS -ne 0 ]; then
-                return $EXIT_STATUS
-            fi
-        fi
-    fi
-
-    if [ $EXIT_STATUS -eq 0 ]; then
-        attempts=0
-        while ! is_running && [ $attempts -le ${CLICKHOUSE_START_TIMEOUT:=10} ]; do
-            attempts=$(($attempts + 1))
-            sleep 1
-        done
-        if is_running; then
-            echo "DONE"
-        else
-            echo "UNKNOWN"
-        fi
-    else
-        echo "FAILED"
-    fi
-
-    return $EXIT_STATUS
 }
 
 
 stop()
 {
-    #local EXIT_STATUS
+    ${CLICKHOUSE_GENERIC_PROGRAM} stop --pid-path "${CLICKHOUSE_PIDDIR}"
-    EXIT_STATUS=0
-
-    if [ -f $CLICKHOUSE_PIDFILE ]; then
-
-        echo -n "Stop $PROGRAM service: "
-
-        kill -TERM $(cat "$CLICKHOUSE_PIDFILE")
-
-        if ! wait_for_done ${CLICKHOUSE_STOP_TIMEOUT}; then
-            EXIT_STATUS=2
-            echo "TIMEOUT"
-        else
-            echo "DONE"
-        fi
-
-    fi
-    return $EXIT_STATUS
 }
 
 
 restart()
 {
-    check_config
+    ${CLICKHOUSE_GENERIC_PROGRAM} restart --user "${CLICKHOUSE_USER}" --pid-path "${CLICKHOUSE_PIDDIR}" --config-path "${CLICKHOUSE_CONFDIR}" --binary-path "${CLICKHOUSE_BINDIR}/${PROGRAM}"
-    if stop; then
-        if start; then
-            return 0
-        fi
-    fi
-    return 1
 }