From b71eaf4256a2887fa80b61760c633e0d5c37340c Mon Sep 17 00:00:00 2001
From: Bence Romsics <bence.romsics@ericsson.com>
Date: Wed, 6 Feb 2019 14:53:22 +0100
Subject: [PATCH] Exceptions for: Drive binding by placement allocation

New exception types used in https://review.openstack.org/574783.

Change-Id: I46d89ef6d7630ec2c44d619c022aa8bbb6e51b63
Needed-By: https://review.openstack.org/574783
Partial-Bug: #1578989
See-Also: https://review.openstack.org/502306 (nova spec)
See-Also: https://review.openstack.org/508149 (neutron spec)
---
 neutron_lib/exceptions/placement.py                   | 11 +++++++++++
 ...placement-binding-exceptions-6362d52391b7023e.yaml |  5 +++++
 2 files changed, 16 insertions(+)
 create mode 100644 releasenotes/notes/placement-binding-exceptions-6362d52391b7023e.yaml

diff --git a/neutron_lib/exceptions/placement.py b/neutron_lib/exceptions/placement.py
index c2f2cc001..44a951253 100644
--- a/neutron_lib/exceptions/placement.py
+++ b/neutron_lib/exceptions/placement.py
@@ -69,3 +69,14 @@ class PlacementResourceProviderNameNotUnique(exceptions.Conflict):
 
 class PlacementClientError(exceptions.NeutronException):
     message = _("Placement Client Error (4xx): %(msg)s")
+
+
+class UnknownResourceProvider(exceptions.BadRequest):
+    """Resource provider not known by neutron backends."""
+    message = _("No such resource provider known by Neutron: %(rsc_provider)s")
+
+
+class AmbiguousResponsibilityForResourceProvider(exceptions.NeutronException):
+    """Not clear who's responsible for resource provider."""
+    message = _("Expected one driver to be responsible for resource provider "
+                "%(rsc_provider)s, but got many: %(drivers)s")
diff --git a/releasenotes/notes/placement-binding-exceptions-6362d52391b7023e.yaml b/releasenotes/notes/placement-binding-exceptions-6362d52391b7023e.yaml
new file mode 100644
index 000000000..f6df3d4d9
--- /dev/null
+++ b/releasenotes/notes/placement-binding-exceptions-6362d52391b7023e.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    New exception classes: ``UnknownResourceProvider`` and
+    ``AmbiguousResponsibilityForResourceProvider``.