T6619: Remove the remaining uses of per-protocol FRR configs (backport #3916)

data/templates/frr/static_mcast.frr.j2

@@ -1,13 +1,4 @@
 !
-{% for route_gr in old_mroute %}
-{%     for nh in old_mroute[route_gr] %}
-{%         if old_mroute[route_gr][nh] %}
-no ip mroute {{ route_gr }} {{ nh }} {{ old_mroute[route_gr][nh] }}
-{%         else %}
-no ip mroute {{ route_gr }} {{ nh }}
-{%         endif %}
-{%     endfor %}
-{% endfor %}
 {% for route_gr in mroute %}
 {%     for nh in mroute[route_gr] %}
 {%         if mroute[route_gr][nh] %}

smoketest/scripts/cli/test_protocols_static_multicast.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2024 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 unittest
+
+from base_vyostest_shim import VyOSUnitTestSHIM
+
+
+base_path = ['protocols', 'static', 'multicast']
+
+
+class TestProtocolsStaticMulticast(VyOSUnitTestSHIM.TestCase):
+
+    def tearDown(self):
+        self.cli_delete(base_path)
+        self.cli_commit()
+
+        mroute = self.getFRRconfig('ip mroute', end='')
+        self.assertFalse(mroute)
+
+    def test_01_static_multicast(self):
+
+        self.cli_set(base_path + ['route', '224.202.0.0/24', 'next-hop', '224.203.0.1'])
+        self.cli_set(base_path + ['interface-route', '224.203.0.0/24', 'next-hop-interface', 'eth0'])
+
+        self.cli_commit()
+
+        # Verify FRR bgpd configuration
+        frrconfig = self.getFRRconfig('ip mroute', end='')
+
+        self.assertIn('ip mroute 224.202.0.0/24 224.203.0.1', frrconfig)
+        self.assertIn('ip mroute 224.203.0.0/24 eth0', frrconfig)
+
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)

src/conf_mode/protocols_static_multicast.py

@@ -20,9 +20,10 @@
 from sys import exit
 
 from vyos import ConfigError
+from vyos import frr
 from vyos.config import Config
 from vyos.utils.process import call
-from vyos.template import render
+from vyos.template import render, render_to_string
 
 from vyos import airbag
 airbag.enable()
@@ -92,23 +93,39 @@ def verify(mroute):
         if IPv4Address(route[0]) < IPv4Address('224.0.0.0'):
             raise ConfigError(route + " not a multicast network")
 
+
 def generate(mroute):
     if mroute is None:
         return None
 
-    render(config_file, 'frr/static_mcast.frr.j2', mroute)
+    mroute['new_frr_config'] = render_to_string('frr/static_mcast.frr.j2', mroute)
     return None
 
+
 def apply(mroute):
     if mroute is None:
         return None
+    static_daemon = 'staticd'
+
+    frr_cfg = frr.FRRConfig()
+    frr_cfg.load_configuration(static_daemon)
 
-    if os.path.exists(config_file):
-        call(f'vtysh -d staticd -f {config_file}')
-        os.remove(config_file)
+    if 'old_mroute' in mroute:
+        for route_gr in mroute['old_mroute']:
+            for nh in mroute['old_mroute'][route_gr]:
+                if mroute['old_mroute'][route_gr][nh]:
+                    frr_cfg.modify_section(f'^ip mroute {route_gr} {nh} {mroute["old_mroute"][route_gr][nh]}')
+                else:
+                    frr_cfg.modify_section(f'^ip mroute {route_gr} {nh}')
+
+    if 'new_frr_config' in mroute:
+        frr_cfg.add_before(frr.default_add_before, mroute['new_frr_config'])
+
+    frr_cfg.commit_configuration(static_daemon)
 
     return None
 
+
 if __name__ == '__main__':
     try:
         c = get_config()