[show] cli support for show muxcable cableinfo (sonic-net#1448)

Summary:
This PR provides the support for adding CLI commands for retrieving cable vendor name and part number information of the muxcable.
In particular these Cli commands are supported:
show muxcable cableinfo <port>

Approach
added the changes in sonic-utilities/show and sonic-utilities/config by changing the muxcable.py

What is the motivation for this PR?
To add the support for Cli for muxcable to be utilized for retrieving cable vendor name and part number information of the muxcable.

Signed-off-by: vaibhav-dahiya <vdahiya@microsoft.com>

show/muxcable.py

@@ -381,3 +381,34 @@ def eyeinfo(port, target):
     lane_data.append(res)
     click.echo(tabulate(lane_data, headers=headers))
     sys.exit(EXIT_SUCCESS)
+
+
+@muxcable.command()
+@click.argument('port', required=True, default=None)
+def cableinfo(port):
+    """Show muxcable cable information"""
+
+    if platform_sfputil is not None:
+        physical_port_list = platform_sfputil_helper.logical_port_name_to_physical_port_list(port)
+
+    if not isinstance(physical_port_list, list):
+        click.echo("ERR: Unable to get a port on muxcable port")
+        sys.exit(EXIT_FAIL)
+        if len(physical_port_list) != 1:
+            click.echo("ERR: Unable to get a single port on muxcable")
+            sys.exit(EXIT_FAIL)
+
+    physical_port = physical_port_list[0]
+    import sonic_y_cable.y_cable
+    part_num = sonic_y_cable.y_cable.get_part_number(physical_port)
+    if part_num == False or part_num == -1:
+        click.echo("ERR: Unable to get cable info part number")
+        sys.exit(EXIT_FAIL)
+    vendor = sonic_y_cable.y_cable.get_vendor(physical_port)
+    if vendor == False or vendor == -1:
+        click.echo("ERR: Unable to get cable info vendor name")
+        sys.exit(EXIT_FAIL)
+    headers = ['Vendor', 'Model']
+
+    body = [[vendor, part_num]]
+    click.echo(tabulate(body, headers=headers))

tests/muxcable_test.py

@@ -13,6 +13,9 @@
 sys.modules['sonic_y_cable'] = mock.Mock()
 sys.modules['y_cable'] = mock.Mock()
 sys.modules['sonic_y_cable.y_cable'] = mock.Mock()
+sys.modules['platform_sfputil'] = mock.Mock()
+sys.modules['platform_sfputil_helper'] = mock.Mock()
+sys.modules['utilities_common.platform_sfputil_helper'] = mock.Mock()
 #sys.modules['os'] = mock.Mock()
 #sys.modules['os.geteuid'] = mock.Mock()
 #sys.modules['platform_sfputil'] = mock.Mock()
@@ -153,6 +156,12 @@
 }
 """
 
+expected_muxcable_cableinfo_output = """\
+Vendor    Model
+--------  ---------------
+Credo     CACL1X321P2PA1M
+"""
+
 
 class TestMuxcable(object):
     @classmethod
@@ -487,6 +496,56 @@ def test_config_muxcable_disable_loopback(self):
 
         assert result.exit_code == 100
 
+    @mock.patch('sonic_y_cable.y_cable.get_part_number', mock.MagicMock(return_value=("CACL1X321P2PA1M")))
+    @mock.patch('sonic_y_cable.y_cable.get_vendor', mock.MagicMock(return_value=("Credo          ")))
+    @mock.patch('show.muxcable.platform_sfputil', mock.MagicMock(return_value=1))
+    @mock.patch('utilities_common.platform_sfputil_helper.logical_port_name_to_physical_port_list', mock.MagicMock(return_value=[0]))
+    def test_show_muxcable_cableinfo(self):
+        runner = CliRunner()
+        db = Db()
+
+        result = runner.invoke(show.cli.commands["muxcable"].commands["cableinfo"],
+                               ["Ethernet0"], obj=db)
+
+        assert result.exit_code == 0
+        assert result.output == expected_muxcable_cableinfo_output
+
+    @mock.patch('sonic_y_cable.y_cable.get_part_number', mock.MagicMock(return_value=(False)))
+    @mock.patch('sonic_y_cable.y_cable.get_vendor', mock.MagicMock(return_value=(False)))
+    @mock.patch('show.muxcable.platform_sfputil', mock.MagicMock(return_value=1))
+    @mock.patch('utilities_common.platform_sfputil_helper.logical_port_name_to_physical_port_list', mock.MagicMock(return_value=[0]))
+    def test_show_muxcable_cableinfo_incorrect_port(self):
+        runner = CliRunner()
+        db = Db()
+
+        result = runner.invoke(show.cli.commands["muxcable"].commands["cableinfo"],
+                               ["Ethernet0"], obj=db)
+        assert result.exit_code == 1
+
+    @mock.patch('sonic_y_cable.y_cable.get_part_number', mock.MagicMock(return_value=(False)))
+    @mock.patch('sonic_y_cable.y_cable.get_vendor', mock.MagicMock(return_value=(False)))
+    @mock.patch('show.muxcable.platform_sfputil', mock.MagicMock(return_value=1))
+    @mock.patch('utilities_common.platform_sfputil_helper.logical_port_name_to_physical_port_list', mock.MagicMock(return_value=0))
+    def test_show_muxcable_cableinfo_incorrect_port_return_value(self):
+        runner = CliRunner()
+        db = Db()
+
+        result = runner.invoke(show.cli.commands["muxcable"].commands["cableinfo"],
+                               ["Ethernet0"], obj=db)
+        assert result.exit_code == 1
+
+    @mock.patch('sonic_y_cable.y_cable.get_part_number', mock.MagicMock(return_value=(False)))
+    @mock.patch('sonic_y_cable.y_cable.get_vendor', mock.MagicMock(return_value=(False)))
+    @mock.patch('show.muxcable.platform_sfputil', mock.MagicMock(return_value=1))
+    @mock.patch('utilities_common.platform_sfputil_helper.logical_port_name_to_physical_port_list', mock.MagicMock(return_value=[0, 1]))
+    def test_show_muxcable_cableinfo_incorrect_logical_port_return_value(self):
+        runner = CliRunner()
+        db = Db()
+
+        result = runner.invoke(show.cli.commands["muxcable"].commands["cableinfo"],
+                               ["Ethernet0"], obj=db)
+        assert result.exit_code == 1
+
     @classmethod
     def teardown_class(cls):
         os.environ['UTILITIES_UNIT_TESTING'] = "0"

utilities_common/platform_sfputil_helper.py

@@ -37,3 +37,13 @@ def platform_sfputil_read_porttab_mappings():
         sys.exit(1)
 
     return 0
+
+def logical_port_name_to_physical_port_list(port_name):
+    if port_name.startswith("Ethernet"):
+        if platform_sfputil.is_logical_port(port_name):
+            return platform_sfputil.get_logical_to_physical(port_name)
+        else:
+            click.echo("Invalid port '{}'".format(port_name))
+            return None
+    else:
+        return [int(port_name)]