dcnm_fabric: Fix for issue 343

plugins/module_utils/fabric/create.py

@@ -23,12 +23,15 @@
 import json
 import logging
 
-from ansible_collections.cisco.dcnm.plugins.module_utils.common.api.v1.lan_fabric.rest.control.fabrics.fabrics import \
-    EpFabricCreate
-from ansible_collections.cisco.dcnm.plugins.module_utils.fabric.common import \
-    FabricCommon
-from ansible_collections.cisco.dcnm.plugins.module_utils.fabric.fabric_types import \
-    FabricTypes
+from ansible_collections.cisco.dcnm.plugins.module_utils.common.api.v1.lan_fabric.rest.control.fabrics.fabrics import (
+    EpFabricCreate,
+)
+from ansible_collections.cisco.dcnm.plugins.module_utils.fabric.common import (
+    FabricCommon,
+)
+from ansible_collections.cisco.dcnm.plugins.module_utils.fabric.fabric_types import (
+    FabricTypes,
+)
 
 
 class FabricCreateCommon(FabricCommon):
@@ -112,6 +115,38 @@ def _set_fabric_create_endpoint(self, payload):
         self.path = self.ep_fabric_create.path
         self.verb = self.ep_fabric_create.verb
 
+    def _add_ext_fabric_type_to_payload(self, payload: dict) -> dict:
+        """
+        # Summary
+
+        If the payload contains an external fabric type (e.g ISN)
+        and does not contain the EXT_FABRIC_TYPE key, add this
+        key with the default value that NDFC GUI uses for displaying
+        the fabric type.
+
+        # Raises
+
+        None
+        """
+        method_name = inspect.stack()[0][3]
+
+        fabric_type = payload.get("FABRIC_TYPE")
+        if fabric_type not in self.fabric_types.external_fabric_types:
+            return payload
+        if "EXT_FABRIC_TYPE" in payload:
+            return payload
+        value = self.fabric_types.fabric_type_to_ext_fabric_type_map.get(fabric_type)
+        if value is None:
+            return payload
+        payload["EXT_FABRIC_TYPE"] = value
+
+        msg = f"{self.class_name}.{method_name}: "
+        msg += "Added EXT_FABRIC_TYPE to payload. "
+        msg += f"fabric_type: {fabric_type}, "
+        msg += f"value: {value}"
+        self.log.debug(msg)
+        return payload
+
     def _send_payloads(self):
         """
         -   If ``check_mode`` is ``False``, send the payloads
@@ -125,6 +160,8 @@ def _send_payloads(self):
         -   This overrides the parent class method.
         """
         for payload in self._payloads_to_commit:
+            payload = self._add_ext_fabric_type_to_payload(payload)
+
             try:
                 self._set_fabric_create_endpoint(payload)
             except ValueError as error:

plugins/module_utils/fabric/fabric_types.py

@@ -88,8 +88,28 @@ def _init_fabric_types(self) -> None:
         self._fabric_type_to_feature_name_map["VXLAN_EVPN"] = "vxlan"
         self._fabric_type_to_feature_name_map["VXLAN_EVPN_MSD"] = "vxlan"
 
+        # Map fabric type to the value that the controller GUI displays
+        # in the Fabric Type column at NDFC -> Manage -> Fabrics
+        # This is needed only for fabrics that use the External_Fabric
+        # template, e.g. ISN, and will be inserted into the POST request
+        # payload for external fabrics as (in the case of ISN fabric type):
+        # "EXT_FABRIC_TYPE": "Multi-Site External Network"
+        #
+        # Exposed via property fabric_type_to_ext_fabric_type_map
+        self._fabric_type_to_ext_fabric_type_map = {}
+        self._fabric_type_to_ext_fabric_type_map["ISN"] = "Multi-Site External Network"
+
         self._valid_fabric_types = sorted(self._fabric_type_to_template_name_map.keys())
 
+        # self._external_fabric_types is used in conjunction with
+        # self._fabric_type_to_ext_fabric_type_map.  This is used in (at least)
+        # FabricCreateCommon() to determine if EXT_FABRIC_TYPE key needs to be
+        # added to a payload.
+        #
+        # Exposed via property external_fabric_types
+        self._external_fabric_types = set()
+        self._external_fabric_types.add("ISN")
+
         self._mandatory_parameters_all_fabrics = []
         self._mandatory_parameters_all_fabrics.append("FABRIC_NAME")
         self._mandatory_parameters_all_fabrics.append("FABRIC_TYPE")
@@ -128,6 +148,19 @@ def _init_properties(self) -> None:
         self._properties["template_name"] = None
         self._properties["valid_fabric_types"] = self._valid_fabric_types
 
+    @property
+    def external_fabric_types(self):
+        """
+        # Summary
+
+        set() containing all external fabric types e.g. ISN.
+
+        # Raises
+
+        None
+        """
+        return self._external_fabric_types
+
     @property
     def fabric_type(self):
         """
@@ -150,6 +183,19 @@ def fabric_type(self, value):
             raise ValueError(msg)
         self._properties["fabric_type"] = value
 
+    @property
+    def fabric_type_to_ext_fabric_type_map(self):
+        """
+        # Summary
+
+        Returns a dictionary, keyed on fabric_type (e.g. "ISN"),
+        whose value is a string that the NDFC GUI uses to describe the
+        external fabric type. See the Fabric Type column at
+        NDFC -> Manage -> Fabrics for an example of how this is used
+        by the NDFC GUI.
+        """
+        return self._fabric_type_to_ext_fabric_type_map
+
     @property
     def feature_name(self):
         """