lldp: T393: first running version of lldpd

1 files changed, 135 insertions, 90 deletions

diff --git a/src/conf_mode/lldp.py b/src/conf_mode/lldp.py
index 27749c81c..88a4a57a4 100755
--- a/src/conf_mode/lldp.py
+++ b/src/conf_mode/lldp.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2017 VyOS maintainers and contributors
+# Copyright (C) 2017-2019 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
@@ -13,23 +13,36 @@
 #
 # 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 re
 import sys
+import os
+import jinja2
 
+from copy import deepcopy
 from vyos.config import Config
 from vyos import ConfigError
 
+# Please be careful if you edit the template.
+config_file = "/etc/default/lldpd"
+lldp_tmpl = """
+### Autogenerated by lldp.py ###
+DAEMON_ARGS="{% if snmp %}-x {% endif %}{% if addr %}-m {{ addr }} {% endif %}{% if cdp %}-c {% endif %}{% if edp %}-e {% endif %}{% if fdp %}-f {% endif %}{% if sonmp %}-s{% endif %}"
+
+"""
+
+default_config_data = {
+    "options": '',
+    "interface_list": '',
+    "location": ''
+}
 
 def get_options(config):
     options = {}
     config.set_level('service lldp')
-    options['listen_vlan'] = config.exists('listen-vlan')
 
-    options["addr"] = config.return_value('management-address')
+    options['listen_vlan'] = config.exists('listen-vlan')
+    options['addr'] = config.return_value('management-address')
 
     snmp = config.exists('snmp enable')
     options["snmp"] = snmp
@@ -39,75 +52,74 @@ def get_options(config):
         config.set_level('service lldp')
 
     config.set_level('service lldp legacy-protocols')
-    options["cdp"] = config.exists("cdp")
-    options["edp"] = config.exists("edp")
-    options["fdp"] = config.exists("fdp")
-    options["sonmp"] = config.exists("sonmp")
-    return options
+    options['cdp'] = config.exists('cdp')
+    options['edp'] = config.exists('edp')
+    options['fdp'] = config.exists('fdp')
+    options['sonmp'] = config.exists('sonmp')
 
+    return options
 
 def get_interface_list(config):
     config.set_level('service lldp')
     intfs_names = config.list_nodes('interface')
     if len(intfs_names) < 0:
         return 0
+
     interface_list = []
     for name in intfs_names:
-        config.set_level("service lldp interface {0}".format(name))
+        config.set_level('service lldp interface {0}'.format(name))
         disable = config.exists('disable')
         intf = {
-            "name": name,
-            "disable": disable
+            'name': name,
+            'disable': disable
         }
         interface_list.append(intf)
     return interface_list
 
 
 def get_location_intf(config, name):
-    path = "service lldp interface {0}".format(name)
+    path = 'service lldp interface {0}'.format(name)
     config.set_level(path)
-    if config.exists("location"):
+    if config.exists('location'):
         return 0
-    config.set_level("{} location".format(path))
+
+    config.set_level('{} location'.format(path))
     civic_based = {}
     elin = None
     coordinate_based = {}
 
     if config.exists('civic-based'):
-        config.set_level("{} location civic-based".format(path))
-        cc = config.return_value("country-code")
-        civic_based["country_code"] = cc
-        civic_based["ca_type"] = []
+        config.set_level('{} location civic-based'.format(path))
+        cc = config.return_value('country-code')
+        civic_based['country_code'] = cc
+        civic_based['ca_type'] = []
         ca_types_names = config.list_nodes('ca-type')
         if ca_types_names:
             for ca_types_name in ca_types_names:
-                config.set_level("{0} location civic-based ca-type {1}".format(path, ca_types_name))
+                config.set_level('{0} location civic-based ca-type {1}'.format(path, ca_types_name))
                 ca_val = config.return_value('ca-value')
                 ca_type = {
-                    "name": ca_types_name,
-                    "ca_val": ca_val
+                    'name': ca_types_name,
+                    'ca_val': ca_val
                 }
-                civic_based["ca_type"].append(ca_type)
-
-    elif config.exists("elin"):
-        elin = config.return_value("elin")
-
-    elif config.exists("coordinate-based"):
-        config.set_level("{} location coordinate-based".format(path))
-        alt = config.return_value("altitude")
-        lat = config.return_value("latitude")
-        long = config.return_value("longitude")
-        datum = config.return_value("datum")
-        coordinate_based["altitude"] = alt
-        coordinate_based["latitude"] = lat
-        coordinate_based["longitude"] = long
-        coordinate_based["datum"] = datum
+                civic_based['ca_type'].append(ca_type)
+
+    elif config.exists('elin'):
+        elin = config.return_value('elin')
+
+    elif config.exists('coordinate-based'):
+        config.set_level('{} location coordinate-based'.format(path))
+
+        coordinate_based['altitude'] = config.return_value('altitude')
+        coordinate_based['latitude'] = config.return_value('latitude')
+        coordinate_based['longitude'] = config.return_value('longitude')
+        coordinate_based['datum'] = config.return_value('datum')
 
     intf = {
-        "name": name,
-        "civic_based": civic_based,
-        "elin": elin,
-        "coordinate_based": coordinate_based
+        'name': name,
+        'civic_based': civic_based,
+        'elin': elin,
+        'coordinate_based': coordinate_based
 
     }
     return intf
@@ -118,92 +130,125 @@ def get_location(config):
     intfs_names = config.list_nodes('interface')
     if len(intfs_names) < 0:
         return 0
-    if config.exists("disable"):
+
+    if config.exists('disable'):
         return 0
+
     intfs_location = []
     for name in intfs_names:
         intf = get_location_intf(config, name)
         intfs_location.append(intf)
+
     return intfs_location
 
 
 def get_config():
+    lldp = deepcopy(default_config_data)
     conf = Config()
-    options = get_options(conf)
-    interface_list = get_interface_list(conf)
-    location = get_location(conf)
-    lldp = {"options": options, "interface_list": interface_list, "location": location}
-    return lldp
+    if not conf.exists('service lldp'):
+        return None
+    else:
+        lldp['options'] = get_options(conf)
+        lldp['interface_list'] = get_interface_list(conf)
+        lldp['location'] = get_location(conf)
+
+        return lldp
 
 
 def verify(lldp):
+    # bail out early - looks like removal from running config
+    if lldp is None:
+        return
 
     # check location
-    for location in lldp["location"]:
-
+    for location in lldp['location']:
         # check civic-based
-        if len(location["civic_based"]) > 0:
-            if len(location["coordinate_based"]) > 0 or location["elin"]:
-                raise ConfigError("Can only configure 1 location type for interface {0}".format(location["name"]))
+        if len(location['civic_based']) > 0:
+            if len(location['coordinate_based']) > 0 or location['elin']:
+                raise ConfigError('Can only configure 1 location type for interface {0}'.format(location['name']))
 
             # check country-code
-            if not location["civic_based"]["country_code"]:
-                raise ConfigError("Invalid location for interface {0}: must configure the country code".format(location["name"]))
+            if not location['civic_based']['country_code']:
+                raise ConfigError('Invalid location for interface {0}:\n' \
+                                  'must configure the country code'.format(location['name']))
 
-            if not re.match(r"^[a-zA-Z]{2}$", location["civic_based"]["country_code"]):
-                raise ConfigError("Invalid location for interface {0}: country-code must be 2 characters".format(location["name"]))
+            if not re.match(r'^[a-zA-Z]{2}$', location['civic_based']['country_code']):
+                raise ConfigError('Invalid location for interface {0}:\n' \
+                                  'country-code must be 2 characters'.format(location['name']))
             # check ca-type
-            if len(location["civic_based"]["ca_type"]) < 0:
-                raise ConfigError("Invalid location for interface {0}: must define at least 1 ca-type".format(location["name"]))
+            if len(location['civic_based']['ca_type']) < 0:
+                raise ConfigError('Invalid location for interface {0}:\n' \
+                                  'must define at least 1 ca-type'.format(location['name']))
 
-            for ca_type in location["civic_based"]["ca_type"]:
-                if not int(ca_type["name"]) in range(0, 129):
-                    raise ConfigError("Invalid location for interface {0}: ca-type must between 0-128".format(location["name"]))
+            for ca_type in location['civic_based']['ca_type']:
+                if not int(ca_type['name']) in range(0, 129):
+                    raise ConfigError('Invalid location for interface {0}:\n' \
+                                      'ca-type must between 0-128'.format(location['name']))
 
-                if not ca_type["ca_val"]:
-                    raise ConfigError("Invalid location for interface {0}: must configure the ca-value for ca-type {1}".format(location["name"],ca_type["name"]))
+                if not ca_type['ca_val']:
+                    raise ConfigError('Invalid location for interface {0}:\n' \
+                                      'must configure the ca-value for ca-type {1}'.format(location["name"],ca_type['name']))
 
         # check coordinate-based
-        elif len(location["coordinate_based"]) > 0:
+        elif len(location['coordinate_based']) > 0:
             # check longitude and latitude
-            if not location["coordinate_based"]["longitude"]:
-                raise ConfigError("Must define longitude for interface {0}".format(location["name"]))
+            if not location['coordinate_based']['longitude']:
+                raise ConfigError('Must define longitude for interface {0}'.format(location['name']))
 
-            if not location["coordinate_based"]["latitude"]:
-                raise ConfigError("Must define latitude for interface {0}".format(location["name"]))
+            if not location['coordinate_based']['latitude']:
+                raise ConfigError('Must define latitude for interface {0}'.format(location['name']))
 
-            if not re.match(r"^(\d+)(\.\d+)?[nNsS]$", location["coordinate_based"]["latitude"]):
-                raise ConfigError("Invalid location for interface {0}: latitude should be a number followed by S or N".format(location["name"]))
+            if not re.match(r'^(\d+)(\.\d+)?[nNsS]$', location['coordinate_based']['latitude']):
+                raise ConfigError('Invalid location for interface {0}:\n' \
+                                  'latitude should be a number followed by S or N'.format(location['name']))
 
-            if not re.match(r"^(\d+)(\.\d+)?[eEwW]$", location["coordinate_based"]["longitude"]):
-                raise ConfigError("Invalid location for interface {0}: longitude should be a number followed by E or W".format(location["name"]))
+            if not re.match(r'^(\d+)(\.\d+)?[eEwW]$', location['coordinate_based']['longitude']):
+                raise ConfigError('Invalid location for interface {0}:\n' \
+                                  'longitude should be a number followed by E or W'.format(location['name']))
 
             # check altitude and datum if exist
-            if location["coordinate_based"]["altitude"]:
-                if not re.match(r"^[-+0-9\.]+$", location["coordinate_based"]["altitude"]):
-                    raise ConfigError("Invalid location for interface {0}: altitude should be a positive or negative number".format(location["name"]))
+            if location['coordinate_based']['altitude']:
+                if not re.match(r'^[-+0-9\.]+$', location['coordinate_based']['altitude']):
+                    raise ConfigError('Invalid location for interface {0}:\n' \
+                                      'altitude should be a positive or negative number'.format(location['name']))
 
-            if location["coordinate_based"]["datum"]:
-                if not re.match(r"^(WGS84|NAD83|MLLW)$", location["coordinate_based"]["datum"]):
-                    raise ConfigError("Invalid location for interface {0}: datum should be WGS84, NAD83, or MLLW".format(location["name"]))
+            if location['coordinate_based']['datum']:
+                if not re.match(r'^(WGS84|NAD83|MLLW)$', location['coordinate_based']['datum']):
+                    raise ConfigError("Invalid location for interface {0}:\n' \
+                                      'datum should be WGS84, NAD83, or MLLW".format(location['name']))
 
         # check elin
-        elif len(location["elin"]) > 0:
-            if not re.match(r"^[0-9]{10,25}$", location["elin"]):
-                raise ConfigError("Invalid location for interface {0}: ELIN number must be between 10-25 numbers".format(location["name"]))
+        elif location['elin']:
+            if not re.match(r'^[0-9]{10,25}$', location['elin']):
+                raise ConfigError('Invalid location for interface {0}:\n' \
+                                  'ELIN number must be between 10-25 numbers'.format(location['name']))
 
     # check options
-    if lldp["options"]["snmp"]:
-        if not lldp["options"]["sys_snmp"]:
-            raise ConfigError("SNMP must be configured to enable LLDP SNMP")
+    if lldp['options']['snmp']:
+        if not lldp['options']['sys_snmp']:
+            raise ConfigError('SNMP must be configured to enable LLDP SNMP')
+
+
+def generate(lldp):
+    # bail out early - looks like removal from running config
+    if lldp is None:
+        return
 
+    tmpl = jinja2.Template(lldp_tmpl)
+    config_text = tmpl.render(lldp['options'])
+    with open(config_file, 'w') as f:
+        f.write(config_text)
 
-def generate(config):
-    pass
 
+def apply(lldp):
+    if lldp:
+        # start/restart lldp service
+        os.system('sudo systemctl restart lldpd.service')
+    else:
+        # LLDP service has been terminated
+        os.system('sudo systemctl stop lldpd.service')
+        os.unlink(config_file)
 
-def apply(config):
-    pass
 
 if __name__ == '__main__':
     try: