implement staticroutebfd process

Author: qiwang4

dockers/docker-fpm-frr/frr/supervisord/critical_processes.j2

@@ -9,4 +9,5 @@ program:pimd
 program:frrcfgd
 {%- else %}
 program:bgpcfgd
+program:staticroutebfd
 {%- endif %}

dockers/docker-fpm-frr/frr/supervisord/supervisord.conf.j2

@@ -141,6 +141,20 @@ stderr_logfile=syslog
 dependent_startup=true
 dependent_startup_wait_for=bgpd:running
 
+{% if DEVICE_METADATA.localhost.frr_mgmt_framework_config is defined and DEVICE_METADATA.localhost.frr_mgmt_framework_config == "true" %}
+{% else %}
+[program:staticroutebfd]
+command=/usr/local/bin/staticroutebfd
+priority=6
+autostart=false
+autorestart=false
+startsecs=0
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=bgpd:running
+{% endif %}
+
 [program:bgpmon]
 command=/usr/local/bin/bgpmon
 priority=6

src/sonic-bgpcfgd/bgpcfgd/log.py

@@ -30,4 +30,4 @@ def log_err(msg):
 
 def log_crit(msg):
     """ Send a message msg to the syslog as CRIT """
-    syslog.syslog(syslog.LOG_CRIT, msg)
+    syslog.syslog(syslog.LOG_CRIT, msg)

src/sonic-bgpcfgd/bgpcfgd/managers_static_rt.py

@@ -41,8 +41,13 @@ def set_handler(self, key, data):
         intf_list   = arg_list(data['ifname']) if 'ifname' in data else None
         dist_list   = arg_list(data['distance']) if 'distance' in data else None
         nh_vrf_list = arg_list(data['nexthop-vrf']) if 'nexthop-vrf' in data else None
+        bfd_enable  = arg_list(data['bfd']) if 'bfd' in data else None
         route_tag   = self.ROUTE_ADVERTISE_DISABLE_TAG if 'advertise' in data and data['advertise'] == "false" else self.ROUTE_ADVERTISE_ENABLE_TAG 
 
+        # bfd enabled route would be handled in staticroutebfd, skip here
+        if bfd_enable and bfd_enable[0].lower() == "true":
+            return True
+
         try:
             ip_nh_set = IpNextHopSet(is_ipv6, bkh_list, nh_list, intf_list, dist_list, nh_vrf_list)
             cur_nh_set, cur_route_tag = self.static_routes.get(vrf, {}).get(ip_prefix, (IpNextHopSet(is_ipv6), route_tag))

src/sonic-bgpcfgd/setup.py

@@ -11,6 +11,7 @@
     entry_points = {
         'console_scripts': [
             'bgpcfgd = bgpcfgd.main:main',
+            'staticroutebfd = staticroutebfd.main:main',
             'bgpmon = bgpmon.bgpmon:main',
         ]
     },