1 files changed, 103 insertions, 0 deletions
diff --git a/src/op_mode/restart_frr.py b/src/op_mode/restart_frr.py
new file mode 100755
index 000000000..d94465603
--- /dev/null
+++ b/src/op_mode/restart_frr.py
@@ -0,0 +1,103 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2019 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import sys
+import argparse
+import subprocess
+import logging
+from logging.handlers import SysLogHandler
+
+# some default values
+watchfrr = '/usr/lib/frr/watchfrr.sh'
+vtysh = '/usr/bin/vtysh'
+
+# configure logging
+logger = logging.getLogger(__name__)
+logs_handler = SysLogHandler('/dev/log')
+logs_handler.setFormatter(logging.Formatter('%(filename)s: %(message)s'))
+logger.addHandler(logs_handler)
+logger.setLevel(logging.INFO)
+
+# write active config to file
+def _write_config():
+    command = "sudo {} -n -c write ".format(vtysh)
+    return_code = subprocess.call(command, shell=True)
+    if not return_code == 0:
+        logger.error("Failed to save active config: \"{}\" returned exit code: {}".format(command, return_code))
+        print("Failed to save active config: \"{}\" returned exit code: {}".format(command, return_code))
+        sys.exit(1)
+    logger.info("Active config saved to /etc/frr/frr.conf")
+
+# check if daemon is running
+def _daemon_check(daemon):
+    command = "sudo {} print_status {}".format(watchfrr, daemon)
+    return_code = subprocess.call(command, shell=True)
+    if not return_code == 0:
+        logger.error("Daemon \"{}\" is not running".format(daemon))
+        return False
+
+    # return True if all checks were passed
+    return True
+
+# restart daemon
+def _daemon_restart(daemon):
+    command = "sudo {} restart {}".format(watchfrr, daemon)
+    return_code = subprocess.call(command, shell=True)
+    if not return_code == 0:
+        logger.error("Failed to restart daemon \"{}\"".format(daemon))
+        return False
+
+    # return True if restarted sucessfully
+    logger.info("Daemon \"{}\" restarted".format(daemon))
+    return True
+
+# check all daemons if they are running
+def _check_args_daemon(daemons):
+    for daemon in daemons:
+        if not _daemon_check(daemon):
+            return False
+    return True
+
+# define program arguments
+cmd_args_parser = argparse.ArgumentParser(description='restart frr daemons')
+cmd_args_parser.add_argument('--action', choices=['restart'], required=True, help='action to frr daemons')
+cmd_args_parser.add_argument('--daemon', choices=['bfdd', 'bgpd', 'ospfd', 'ospf6d', 'ripd', 'ripngd', 'staticd', 'zebra'], required=False,  nargs='*', help='select single or multiple daemons')
+# parse arguments
+cmd_args = cmd_args_parser.parse_args()
+
+
+# main logic
+# restart daemon
+if cmd_args.action == 'restart':
+    _write_config()
+    if cmd_args.daemon:
+        # check all daemons if they are running
+        if not _check_args_daemon(cmd_args.daemon):
+            print("Warning: some of listed daemons are not running")
+
+        # run command to restart daemon
+        for daemon in cmd_args.daemon:
+            if not _daemon_restart(daemon):
+                print("Failed to restart daemon: {}".format(daemon))
+                sys.exit(1)
+    else:
+        # run command to restart FRR
+        if not _daemon_restart(''):
+            print("Failed to restart FRRouting")
+            sys.exit(1)
+
+sys.exit(0)