Improve KVM support

Author: Mark-Powers

chi/lease.py

@@ -484,14 +484,25 @@ def add_fip_reservation(self, amount: int):
         """
         add_fip_reservation(reservation_list=self.fip_reservations, count=amount)
 
-    def add_flavor_reservation(self, id, amount=1):
+    def add_flavor_reservation(self, id=None, name=None, amount=1):
         """
-        Add a reservation for a KVM flavor to the list of reservations.
+        Add a reservation for a KVM flavor to the list of reservations by name or ID.
 
         Args:
             id (str): The ID of the flavor to reserve
-            count (int): The number of floating IPs to reserve.
+            name (str): The name of the flavor to reserve
+            amount (int): The number of instances of this flavor to reserve
         """
+        # Do not permit both or neither name and id.
+        if (name and id) or not (name or id):
+            raise CHIValueError(
+                "You must specify exactly one of id or name"
+            )
+
+        # Blazar API requires flavor ID, so we must convert from name
+        if not id:
+            id = server.get_flavor(name).id
+
         self.flavor_reservations.append(
             {
                 "resource_type": "flavor:instance",
@@ -784,7 +795,7 @@ def get_reserved_flavors(self):
         flavors = []
         for res in self.flavor_reservations:
             flavors.extend(
-                server.list_flavors(reservable=True, reservation_id=res.get("id"))
+                server.list_flavors(reservation_id=res.get("id"))
             )
         return flavors
 

chi/server.py

@@ -699,11 +699,12 @@ def __repr__(self):
         return f"<{self.__class__.__name__} '{self.name}' {self.description} (disk={self.disk}) (ram={self.ram}) (vcpus={self.vcpus})>"
 
 
-def list_flavors(reservable=None, reservation_id=None) -> List[Flavor]:
-    """Get a list of all available flavors.
+def list_flavors(reservable=None, gpu=None, reservation_id=None) -> List[Flavor]:
+    """Get a list of flavors
 
     Args:
-        reservable (bool): Whether to filter by reservable flavors. Defaults to True.
+        reservable (bool): If given, whether to filter by reservable flavors.
+        gpu (bool): If given, whether to filter by GPU flavors.
         reservation_id (str, optional): The reservation ID to filter by. Defaults to None.
 
     Returns:
@@ -715,13 +716,19 @@ def list_flavors(reservable=None, reservation_id=None) -> List[Flavor]:
         chi_flavors = []
         for f in flavors:
             extras = f.get_keys()
-            # include a flavor if:
-            # - not filtering by reservable
-            # - is reservable in blazar & not an active reservation flavor
-            if not reservable or (
-                extras.get("aggregate_instance_extra_specs:reservation")
-                == reservation_id
-                and extras.get("trait:CUSTOM_BLAZAR_FLAVOR_RESERVATION") == "required"
+            is_reservable = not any(
+                e.startswith("resources:CUSTOM_RESERVATION_")
+                for e in extras
+            )
+            is_gpu = f.extra_specs.get("trait:CUSTOM_GPU") == "required"
+            matching_reservation = (
+                reservation_id is None or
+                extras.get("aggregate_instance_extra_specs:reservation", None) == reservation_id
+            )
+            if (
+                (reservable is None or reservable == is_reservable)
+                and (gpu is None or gpu == is_gpu)
+                and matching_reservation
             ):
                 chi_flavors.append(
                     Flavor(