Remove cancelation workflow

More loose Infoblox errors, and merge cancel workflow behaviour into the termination workflows

gso/services/infoblox.py

@@ -19,10 +19,6 @@ class AllocationError(Exception):
     """Raised when Infoblox failed to allocate a resource."""
 
 
-class DeletionError(Exception):
-    """Raised when Infoblox failed to delete a resource."""
-
-
 def _setup_connection() -> tuple[connector.Connector, IPAMParams]:
     """Set up a new connection with an Infoblox instance.
 
@@ -158,7 +154,7 @@ def delete_network(ip_network: ipaddress.IPv4Network | ipaddress.IPv6Network) ->
         network.delete()
     else:
         msg = f"Could not find network {ip_network}, nothing has been deleted."
-        raise DeletionError(msg)
+        logger.warning(msg)
 
 
 def allocate_host(
@@ -253,8 +249,9 @@ def create_host_by_ip(
                         :term:`GSO`.
     """
     if not hostname_available(hostname):
-        msg = f"Cannot allocate new host, FQDN {hostname} already taken."
-        raise AllocationError(msg)
+        msg = f"FQDN {hostname} already taken, nothing to be done."
+        logger.warning(msg)
+        return
 
     conn, oss = _setup_connection()
     ipv6_object = objects.IP.create(ip=str(ipv6_address), mac=NULL_MAC, configure_for_dhcp=False)
@@ -331,7 +328,7 @@ def delete_host_by_ip(ip_addr: ipaddress.IPv4Address | ipaddress.IPv6Address) ->
         host.delete()
     else:
         msg = f"Could not find host at {ip_addr}, nothing has been deleted."
-        raise DeletionError(msg)
+        logger.warning(msg)
 
 
 def delete_host_by_fqdn(fqdn: str) -> None:
@@ -348,4 +345,4 @@ def delete_host_by_fqdn(fqdn: str) -> None:
         host.delete()
     else:
         msg = f"Could not find host at {fqdn}, nothing has been deleted."
-        raise DeletionError(msg)
+        logger.warning(msg)