sonic-utilities: Create SONiC ISIS show commands

* Update show/main.py Include "isis" as a cli group option for show commands
* Create show/isis_frr.py Add "isis" as a cli group option for show commands and add support for "show isis neighbors", "show isis database", "show isis hostname", and "show isis interface"

Signed-off-by: cchoate54@gmail.com

show/isis_frr.py

@@ -0,0 +1,101 @@
+import click
+
+import utilities_common.bgp_util as bgp_util
+import utilities_common.cli as clicommon
+
+###############################################################################
+#
+# 'show isis' cli stanza
+#
+############################################################################### 
+
+
+@click.group(cls=clicommon.AliasedGroup, name="isis")
+def isis():
+    """Show ISIS (Intermediate System to Intermediate System) information"""
+    pass
+
+
+# 'neighbors' subcommand ("show isis neighbors")
+@isis.command()
+@click.argument('system_id', required=False)
+@click.argument('info_type',
+                metavar='[detail]',
+                type=click.Choice(
+                    ['detail']),
+                required=False)
+@click.option('--verbose', is_flag=True, help="Enable verbose output")
+def neighbors(system_id, info_type, verbose):
+    """Show ISIS neighbors"""
+
+    command = 'show isis neighbor'
+    if system_id is not None:
+        command += ' {0}'.format(system_id)
+    elif info_type or verbose:
+        command += ' detail'
+
+    output = ""
+    output += bgp_util.run_bgp_show_command(command)
+
+    click.echo(output.rstrip('\n'))
+
+# 'database' subcommand ("show isis database")
+@isis.command()
+@click.argument('lsp_id', required=False)
+@click.argument('info_type',
+                metavar='[detail]',
+                type=click.Choice(
+                    ['detail']),
+                required=False)
+@click.option('--verbose', is_flag=True, help="Enable verbose output")
+def database(lsp_id, info_type, verbose):
+    """Show ISIS database"""
+
+    command = 'show isis database'
+    if lsp_id is not None:
+        command += ' {0}'.format(lsp_id)
+    elif info_type or verbose:
+        command += ' detail'
+
+    output = ""
+    output += bgp_util.run_bgp_show_command(command)
+
+    click.echo(output.rstrip('\n'))
+
+# 'hostname' subcommand ("show isis hostname")
+@isis.command()
+def hostname():
+    """Show ISIS hostname"""
+
+    command = 'show isis hostname'
+
+    output = ""
+    output += bgp_util.run_bgp_show_command(command)
+
+    click.echo(output.rstrip('\n'))
+
+# 'interface' subcommand ("show isis interface")
+@isis.command()
+@click.argument('interface', required=False)
+@click.argument('info_type',
+                metavar='[detail]',
+                type=click.Choice(
+                    ['detail']),
+                required=False)
+@click.option('--verbose', is_flag=True, help="Enable verbose output")
+def interface(interface, info_type, verbose):
+    """Show ISIS interface"""
+
+    command = 'show isis interface'
+    if interface is not None and clicommon.get_interface_naming_mode() == "alias":
+        interface = clicommon.iface_alias_converter.alias_to_name(interface)
+
+    if interface is not None:
+        command += ' {0}'.format(interface)
+    elif info_type or verbose:
+        command += ' detail'
+
+    output = ""
+    output += bgp_util.run_bgp_show_command(command)
+
+    click.echo(output.rstrip('\n'))

show/main.py

@@ -48,6 +48,7 @@
 from . import flow_counters
 from . import gearbox
 from . import interfaces
+from . import isis_frr
 from . import kdump
 from . import kube
 from . import muxcable
@@ -276,6 +277,7 @@ def cli(ctx):
 cli.add_command(flow_counters.flowcnt_trap)
 cli.add_command(kdump.kdump)
 cli.add_command(interfaces.interfaces)
+cli.add_command(isis_frr.isis)
 cli.add_command(kdump.kdump)
 cli.add_command(kube.kubernetes)
 cli.add_command(muxcable.muxcable)