vrf: T4562: Rewrite show vrf name xxx delete old script

Add option "--name" for function "show" to get required VRF name
Delete old script "show_vrf.py"

2 files changed, 16 insertions, 70 deletions

diff --git a/src/op_mode/show_vrf.py b/src/op_mode/show_vrf.py
deleted file mode 100755
index 3c7a90205..000000000
--- a/src/op_mode/show_vrf.py
+++ /dev/null
@@ -1,66 +0,0 @@
-#!/usr/bin/env python3
-#
-# Copyright (C) 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
-# 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 argparse
-import jinja2
-from json import loads
-
-from vyos.util import cmd
-
-vrf_out_tmpl = """VRF name          state     mac address        flags                     interfaces
---------          -----     -----------        -----                     ----------
-{%- for v in vrf %}
-{{"%-16s"|format(v.ifname)}}  {{ "%-8s"|format(v.operstate | lower())}}  {{"%-17s"|format(v.address | lower())}}  {{ v.flags|join(',')|lower()}}  {{v.members|join(',')|lower()}}
-{%- endfor %}
-
-"""
-
-def list_vrfs():
-    command = 'ip -j -br link show type vrf'
-    answer = loads(cmd(command))
-    return [_ for _ in answer if _]
-
-def list_vrf_members(vrf):
-    command = f'ip -j -br link show master {vrf}'
-    answer = loads(cmd(command))
-    return [_ for _ in answer if _]
-
-parser = argparse.ArgumentParser()
-group = parser.add_mutually_exclusive_group()
-group.add_argument("-e", "--extensive", action="store_true",
-                   help="provide detailed vrf informatio")
-parser.add_argument('interface', metavar='I', type=str, nargs='?',
-                    help='interface to display')
-
-args = parser.parse_args()
-
-if args.extensive:
-    data = { 'vrf': [] }
-    for vrf in list_vrfs():
-        name = vrf['ifname']
-        if args.interface and name != args.interface:
-            continue
-
-        vrf['members'] = []
-        for member in list_vrf_members(name):
-            vrf['members'].append(member['ifname'])
-        data['vrf'].append(vrf)
-
-    tmpl = jinja2.Template(vrf_out_tmpl)
-    print(tmpl.render(data))
-
-else:
-    print(" ".join([vrf['ifname'] for vrf in list_vrfs()]))
diff --git a/src/op_mode/vrf.py b/src/op_mode/vrf.py
index 63d9b5ee5..f86516786 100755
--- a/src/op_mode/vrf.py
+++ b/src/op_mode/vrf.py
@@ -16,6 +16,7 @@
 
 import json
 import sys
+import typing
 
 from tabulate import tabulate
 from vyos.util import cmd
@@ -23,12 +24,23 @@ from vyos.util import cmd
 import vyos.opmode
 
 
-def _get_raw_data():
+def _get_raw_data(name=None):
     """
-    :return: list
+    If vrf name is not set - get all VRFs
+    If vrf name is set - get only this name data
+    If vrf name set and not found - return []
     """
     output = cmd('sudo ip --json --brief link show type vrf')
     data = json.loads(output)
+    if not data:
+        return []
+    if name:
+        is_vrf_exists = True if [vrf for vrf in data if vrf.get('ifname') == name] else False
+        if is_vrf_exists:
+            output = cmd(f'sudo ip --json --brief link show dev {name}')
+            data = json.loads(output)
+            return data
+        return []
     return data
 
 
@@ -62,8 +74,8 @@ def _get_formatted_output(raw_data):
     return output
 
 
-def show(raw: bool):
-    vrf_data = _get_raw_data()
+def show(raw: bool, name: typing.Optional[str]):
+    vrf_data = _get_raw_data(name=name)
     if raw:
         return vrf_data
     else: