Ipam service

I think the main functionality regarding the ipam service (NAT-152) is implemented so I'm sending the PR. Since the last call, I added support for list of containers per service, support for extattrs, and added an endpoint to get status and usage fields of hosts in a network.

The service is implemented in this directory: https://gitlab.geant.org/goat/gap/geant-service-orchestrator/-/tree/ipam-service/gso/services

A configuration file is needed based on this template exported as OSS_PARAMS_FILENAME: https://gitlab.geant.org/goat/gap/geant-service-orchestrator/-/blob/ipam-service/gso/oss-params-example.json

There is still some polishing to do regarding error checking/propagation and how to expose some functionality to WFO (if needed) such as constraints for extensible atributes, different modes for allocating things, host/network deletion, etc. but maybe it's better to tinker with the IPAM service from WFO to see how to handle these things according to the workflows.

I kept a dummy menu in _ipam.py and a dummy entry point in ipam.py that are useful for testing. Can be deleted later.

gso/services/_ipam.py

@@ -147,6 +147,7 @@ def _allocate_network(
     infoblox_params: settings.InfoBloxParams,
     network_params: Union[settings.V4NetworkParams, settings.V6NetworkParams],
     ip_version=4,
+    comment="",
     extattrs={}
 ) -> Union[V4ServiceNetwork, V6ServiceNetwork]:
     assert ip_version in [4, 6]
@@ -168,6 +169,7 @@ def _allocate_network(
             },
             "_result_field": "networks",
         },
+        "comment": comment,
         "extattrs": extattrs
     }
 
@@ -203,7 +205,7 @@ def _allocate_network(
         return V6ServiceNetwork(v6=allocated_network)
 
 
-def allocate_service_ipv4_network(service_type, extattrs={}
+def allocate_service_ipv4_network(service_type, comment="", extattrs={}
                                   ) -> V4ServiceNetwork:
     """
     Allocate IPv4 network within the container of the specified service type.
@@ -216,10 +218,11 @@ def allocate_service_ipv4_network(service_type, extattrs={}
     return _allocate_network(ipam_params.INFOBLOX,
                              getattr(ipam_params, service_type).V4,
                              4,
+                             comment,
                              extattrs)
 
 
-def allocate_service_ipv6_network(service_type, extattrs={}
+def allocate_service_ipv6_network(service_type, comment="", extattrs={}
                                   ) -> V6ServiceNetwork:
     """
     Allocate IPv6 network within the container of the specified service type.
@@ -232,6 +235,7 @@ def allocate_service_ipv6_network(service_type, extattrs={}
     return _allocate_network(ipam_params.INFOBLOX,
                              getattr(ipam_params, service_type).V6,
                              6,
+                             comment,
                              extattrs)
 
 
@@ -619,13 +623,14 @@ if __name__ == '__main__':
 
         elif choice == '4':
             service_type = input("Enter service type: ")
+            comment = input("Enter a comment for the network: ")
             ip_version = int(input("Enter IP version (4 or 6): "))
             if ip_version == 4:
                 new_network = allocate_service_ipv4_network(
-                    service_type=service_type)
+                    comment=comment, service_type=service_type)
             elif ip_version == 6:
                 new_network = allocate_service_ipv6_network(
-                    service_type=service_type)
+                    comment=comment, service_type=service_type)
             else:
                 print("Invalid IP version. Please enter either 4 or 6.")
                 continue