Added CLI commands to configure Banner and display current configuration

Signed-off-by: Yevhen Fastiuk <yfastiuk@nvidia.com>

config/main.py

@@ -7750,5 +7750,59 @@ def notice(db, category_list, max_events, namespace):
     handle_asic_sdk_health_suppress(db, 'notice', category_list, max_events, namespace)
 
 
+#
+# 'banner' group ('config banner ...')
+#
+@config.group()
+def banner():
+    """Configuring system banner messages"""
+    pass
+
+
+@banner.command()
+@click.argument('state', metavar='<enabled|disabled>', required=True, type=click.Choice(['enabled', 'disabled']))
+def state(state):
+    """Set banner feature state"""
+
+    config_db = ConfigDBConnector()
+    config_db.connect()
+    config_db.mod_entry(swsscommon.CFG_BANNER_MESSAGE_TABLE_NAME, 'global',
+                        {'state': state})
+
+
+
+@banner.command()
+@click.argument('message', metavar='<message>', required=True)
+def login(message):
+    """Set login message"""
+
+    config_db = ConfigDBConnector()
+    config_db.connect()
+    config_db.mod_entry(swsscommon.CFG_BANNER_MESSAGE_TABLE_NAME, 'global',
+                        {'login': message})
+
+
+@banner.command()
+@click.argument('message', metavar='<message>', required=True)
+def logout(message):
+    """Set logout message"""
+
+    config_db = ConfigDBConnector()
+    config_db.connect()
+    config_db.mod_entry(swsscommon.CFG_BANNER_MESSAGE_TABLE_NAME, 'global',
+                        {'logout': message})
+
+
+@banner.command()
+@click.argument('message', metavar='<message>', required=True)
+def motd(message):
+    """Set message of the day"""
+
+    config_db = ConfigDBConnector()
+    config_db.connect()
+    config_db.mod_entry(swsscommon.CFG_BANNER_MESSAGE_TABLE_NAME, 'global',
+                        {'motd': message})
+
+
 if __name__ == '__main__':
     config()

show/main.py

@@ -2254,6 +2254,26 @@ def received(db, namespace):
         ctx.fail("ASIC/SDK health event is not supported on the platform")
 
 
+#
+# 'banner' command group ("show banner ...")
+#
+@cli.group('banner', invoke_without_command=True)
+@clicommon.pass_db
+def banner(db):
+    """Show banner messages"""
+
+    banner_table = db.cfgdb.get_entry('BANNER_MESSAGE', 'global')
+
+    hdrs = ['state', 'login', 'motd', 'logout']
+    data = []
+
+    for key in hdrs:
+        data.append(banner_table.get(key, '').replace('\\n', '\n'))
+
+    messages = [data]
+    click.echo(tabulate(messages, headers=hdrs, tablefmt='simple', missingval=''))
+
+
 # Load plugins and register them
 helper = util_base.UtilHelper()
 helper.load_and_register_plugins(plugins, cli)