broadcast-relay: T2230: move inlined templates to dedicated files

1 files changed, 28 insertions, 31 deletions

diff --git a/src/conf_mode/bcast_relay.py b/src/conf_mode/bcast_relay.py
index 8889e701c..96576ddd4 100755
--- a/src/conf_mode/bcast_relay.py
+++ b/src/conf_mode/bcast_relay.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2017 VyOS maintainers and contributors
+# Copyright (C) 2017-2020 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
@@ -13,42 +13,34 @@
 #
 # 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 os
 import fnmatch
-import jinja2
+
+from sys import exit
+from copy import deepcopy
+from jinja2 import FileSystemLoader, Environment
 
 from vyos.config import Config
+from vyos.defaults import directories as vyos_data_dir
 from vyos import ConfigError
 
 config_file = r'/etc/default/udp-broadcast-relay'
 
-config_tmpl = """
-### Autogenerated by bcast_relay.py ###
-
-# UDP broadcast relay configuration for instance {{ id }}
-{%- if description %}
-# Comment: {{ description }}
-{% endif %}
-DAEMON_ARGS="{% if address %}-s {{ address }} {% endif %}{{ id }} {{ port }} {{ interfaces | join(' ') }}"
-
-"""
-
 default_config_data = {
     'disabled': False,
     'instances': []
 }
 
 def get_config():
-    relay = default_config_data
+    relay = deepcopy(default_config_data)
     conf = Config()
-    if not conf.exists('service broadcast-relay'):
+    base = ['service', 'broadcast-relay']
+
+    if not conf.exists(base):
         return None
     else:
-        conf.set_level('service broadcast-relay')
+        conf.set_level(base)
 
     # Service can be disabled by user
     if conf.exists('disable'):
@@ -58,7 +50,7 @@ def get_config():
     # Parse configuration of each individual instance
     if conf.exists('id'):
         for id in conf.list_nodes('id'):
-            conf.set_level('service broadcast-relay id {0}'.format(id))
+            conf.set_level(base + ['id', id])
             config = {
                 'id': id,
                 'disabled': False,
@@ -69,24 +61,24 @@ def get_config():
             }
 
             # Check if individual broadcast relay service is disabled
-            if conf.exists('disable'):
+            if conf.exists(['disable']):
                 config['disabled'] = True
 
             # Source IP of forwarded packets, if empty original senders address is used
-            if conf.exists('address'):
-                config['address'] = conf.return_value('address')
+            if conf.exists(['address']):
+                config['address'] = conf.return_value(['address'])
 
             # A description for each individual broadcast relay service
-            if conf.exists('description'):
-                config['description'] = conf.return_value('description')
+            if conf.exists(['description']):
+                config['description'] = conf.return_value(['description'])
 
             # UDP port to listen on for broadcast frames
-            if conf.exists('port'):
-                config['port'] = conf.return_value('port')
+            if conf.exists(['port']):
+                config['port'] = conf.return_value(['port'])
 
             # Network interfaces to listen on for broadcast frames to be relayed
-            if conf.exists('interface'):
-                config['interfaces'] = conf.return_values('interface')
+            if conf.exists(['interface']):
+                config['interfaces'] = conf.return_values(['interface'])
 
             relay['instances'].append(config)
 
@@ -119,6 +111,11 @@ def generate(relay):
     if relay is None:
         return None
 
+    # Prepare Jinja2 template loader from files
+    tmpl_path = os.path.join(vyos_data_dir['data'], 'templates', 'bcast-relay')
+    fs_loader = FileSystemLoader(tmpl_path)
+    env = Environment(loader=fs_loader)
+
     config_dir = os.path.dirname(config_file)
     config_filename = os.path.basename(config_file)
     active_configs = []
@@ -148,7 +145,7 @@ def generate(relay):
 
         # configuration filename contains instance id
         file = config_file + str(r['id'])
-        tmpl = jinja2.Template(config_tmpl)
+        tmpl = env.get_template('udp-broadcast-relay.tmpl')
         config_text = tmpl.render(r)
         with open(file, 'w') as f:
             f.write(config_text)
@@ -179,4 +176,4 @@ if __name__ == '__main__':
         apply(c)
     except ConfigError as e:
         print(e)
-        sys.exit(1)
+        exit(1)