compute: Update bdms with ephemeral encryption details when requested

This change starts the process of wiring up the new ephemeral encryption
control mechanisims in the compute layer. This initial step being to
ensure the BlockDeviceMapping objects are correctly updated with the
required ephemeral encryption details when requested through the
instance flavor extra specs or image metadata properties.

Change-Id: Id49cb238f7bbf2b97f018ddbe090ebdc08d762dc

1 files changed, 28 insertions, 1 deletions

diff --git a/nova/api/validation/extra_specs/hw.py b/nova/api/validation/extra_specs/hw.py
index 4aaccf639a..bb23e7ce8e 100644
--- a/nova/api/validation/extra_specs/hw.py
+++ b/nova/api/validation/extra_specs/hw.py
@@ -15,6 +15,7 @@
 """Validators for ``hw`` namespaced extra specs."""
 
 from nova.api.validation.extra_specs import base
+from nova.objects import fields
 
 
 realtime_validators = [
@@ -500,6 +501,31 @@ feature_flag_validators = [
     ),
 ]
 
+ephemeral_encryption_validators = [
+    base.ExtraSpecValidator(
+        name='hw:ephemeral_encryption',
+        description=(
+            'Whether to enable ephemeral storage encryption.'
+        ),
+        value={
+            'type': bool,
+            'description': 'Whether to enable ephemeral storage encryption.',
+        },
+    ),
+    base.ExtraSpecValidator(
+        name='hw:ephemeral_encryption_format',
+        description=(
+            'The encryption format to be used if ephemeral storage '
+            'encryption is enabled via hw:ephemeral_encryption.'
+        ),
+        value={
+            'type': str,
+            'description': 'The encryption format to be used if enabled.',
+            'enum': fields.BlockDeviceEncryptionFormatType.ALL,
+        },
+    ),
+]
+
 
 def register():
     return (
@@ -509,5 +535,6 @@ def register():
         hugepage_validators +
         numa_validators +
         cpu_topology_validators +
-        feature_flag_validators
+        feature_flag_validators +
+        ephemeral_encryption_validators
     )