Merge pull request #130 from stackhpc/feature/dell_sonic_linux

Add minimal Dell SONiC driver

Author: dougszumski

networking_generic_switch/devices/netmiko_devices/fake.py

@@ -44,7 +44,7 @@ def send_config_set(self, config_commands, cmd_verify):
         if self.device.ngs_config.get('ngs_fake_failure_prob'):
             failure_prob = self.device.ngs_config['ngs_fake_failure_prob']
             if random.random() < float(failure_prob):
-                raise Exception("Random failure!")
+                raise Exception("Random failure!")  # noqa
 
         for cmd in config_commands:
             LOG.info("%s", cmd)

networking_generic_switch/devices/netmiko_devices/sonic.py

@@ -84,3 +84,27 @@ def send_config_set(self, net_connect, cmd_set):
         return net_connect.send_config_set(config_commands=cmd_set,
                                            cmd_verify=False,
                                            exit_config_mode=False)
+
+
+class DellEnterpriseSonic(Sonic):
+    """Netmiko device driver for Dell Enterprise switches.
+
+       Developed against SONiC-OS-4.2.3-Edge_Standard.
+
+       This driver must be used with the switch set to
+       standard or standard-extended naming mode. Do
+       not use the default setting of native.
+    """
+
+    def send_config_set(self, net_connect, cmd_set):
+        # Netmiko tries to use 'sudo -s' to open a root shell
+        # which doesn't work. It fails with:
+        # FATAL: root cannot launch CLI
+        net_connect.config_mode(config_command='sudo -i')
+
+        # Don't exit configuration mode, as config save requires
+        # root permissions.
+        # Verify commands have run before moving on
+        return net_connect.send_config_set(config_commands=cmd_set,
+                                           cmd_verify=True,
+                                           exit_config_mode=False)

setup.cfg

@@ -49,6 +49,7 @@ generic_switch.devices =
     netmiko_cumulus = networking_generic_switch.devices.netmiko_devices.cumulus:Cumulus
     netmiko_cumulus_nvue = networking_generic_switch.devices.netmiko_devices.cumulus:CumulusNVUE
     netmiko_sonic = networking_generic_switch.devices.netmiko_devices.sonic:Sonic
+    netmiko_dell_enterprise_sonic = networking_generic_switch.devices.netmiko_devices.sonic:DellEnterpriseSonic
     netmiko_nokia_srl = networking_generic_switch.devices.netmiko_devices.nokia:NokiaSRL
     netmiko_pluribus = networking_generic_switch.devices.netmiko_devices.pluribus:Pluribus
     netmiko_aruba_os = networking_generic_switch.devices.netmiko_devices.aruba:ArubaOSCX