bridge: T4569: Rewrite show bridge script of vyos.opmode format

2 files changed, 105 insertions, 1 deletions

diff --git a/op-mode-definitions/show-bridge.xml.in b/op-mode-definitions/show-bridge.xml.in
index 0f8d3064d..8b857888b 100644
--- a/op-mode-definitions/show-bridge.xml.in
+++ b/op-mode-definitions/show-bridge.xml.in
@@ -19,7 +19,7 @@
         <properties>
           <help>Show bridging information</help>
         </properties>
-        <command>bridge -c link show</command>
+        <command>${vyos_op_scripts_dir}/bridge.py show</command>
       </leafNode>
       <tagNode name="bridge">
         <properties>
diff --git a/src/op_mode/bridge.py b/src/op_mode/bridge.py
new file mode 100755
index 000000000..4ab127156
--- /dev/null
+++ b/src/op_mode/bridge.py
@@ -0,0 +1,104 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2022 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 jmespath
+import json
+import sys
+
+from sys import exit
+from tabulate import tabulate
+
+from vyos.util import cmd
+from vyos.util import dict_search
+
+import vyos.opmode
+
+
+def _get_json_data():
+    """
+    Get bridge data format JSON
+    """
+    return cmd(f'sudo bridge --json link show')
+
+
+def _get_raw_data_summary():
+    """Get interested rules
+    :returns dict
+    """
+    data = _get_json_data()
+    data_dict = json.loads(data)
+    return data_dict
+
+
+def _get_bridge_members(bridge: str) -> list:
+    """
+    Get list of interface bridge members
+    :param bridge: str
+    :default: ['n/a']
+    :return: list
+    """
+    data = _get_raw_data_summary()
+    members = jmespath.search(f'[?master == `{bridge}`].ifname', data)
+    return [member for member in members] if members else ['n/a']
+
+
+def _get_member_options(bridge: str):
+    data = _get_raw_data_summary()
+    options = jmespath.search(f'[?master == `{bridge}`]', data)
+    return options
+
+
+def _get_formatted_output_summary(data):
+    data_entries = ''
+    bridges = set(jmespath.search('[*].master', data))
+    for bridge in bridges:
+        member_options = _get_member_options(bridge)
+        member_entries = []
+        for option in member_options:
+            interface = option.get('ifname')
+            ifindex = option.get('ifindex')
+            state = option.get('state')
+            mtu = option.get('mtu')
+            flags = ','.join(option.get('flags')).lower()
+            prio = option.get('priority')
+            member_entries.append([interface, state, mtu, flags, prio])
+        member_headers = ["Member", "State", "MTU", "Flags", "Prio"]
+        output_members = tabulate(member_entries, member_headers, numalign="left")
+        output_bridge = f"""Bridge interface {bridge}:
+{output_members}
+
+"""
+        data_entries += output_bridge
+    output = data_entries
+    return output
+
+
+def show(raw: bool):
+    bridge_data = _get_raw_data_summary()
+    if raw:
+        return bridge_data
+    else:
+        return _get_formatted_output_summary(bridge_data)
+
+
+if __name__ == '__main__':
+    try:
+        res = vyos.opmode.run(sys.modules[__name__])
+        if res:
+            print(res)
+    except ValueError as e:
+        print(e)
+        sys.exit(1)