Validate that context exists

Commit 3e0328b992d8a90213a56ec5a4144677279bea66 broke external
decomposed plugins due to the fact that it assumes that the
context is set.

This patch validates that the context is set.

Co-Authored-By: Kevin Benton <blak111@gmail.com>
Change-Id: I3320f27be7b0fed1d3b37a5c5459d91b2bc4f13b
Closes-bug: #1475837

diff --git a/neutron/db/db_base_plugin_common.py b/neutron/db/db_base_plugin_common.py
index 8661ec589505c8b2049efdb6c1177dc255716748..54257ed971cc1030d2c88c22e1169edcd50e4748 100644 (file)
--- a/neutron/db/db_base_plugin_common.py
+++ b/neutron/db/db_base_plugin_common.py
@@ -223,9 +223,10 @@ class DbBasePluginCommon(common_db_mixin.CommonDbMixin):
         # The shared attribute for a network now reflects if the network
         # is shared to the calling tenant via an RBAC entry.
         shared = False
+        matches = ('*',) + ((context.tenant_id,) if context else ())
         for entry in network.rbac_entries:
             if (entry.action == 'access_as_shared' and
-                    entry.target_tenant in ('*', context.tenant_id)):
+                    entry.target_tenant in matches):
                 shared = True
                 break
         res['shared'] = shared