openstack/heat
Code Issues Proposed changes

Remove duplication on stack resource operations

Browse Source 
Move resource existence and availability check to a single place to
avoid duplication.  This is prep work for the blueprint
detailed-resource-show.

Change-Id: Ie923516d11307fc5efdbfbe728fb842137915b28
This commit is contained in:
Anderson Mesquita 2014-11-14 11:17:19 -05:00
parent 4f095c5688
commit 201d208361
1 changed files with 12 additions and 16 deletions
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28
heat/engine/service.py
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@ -1072,6 +1072,15 @@ class EngineService(service.Service):
access_key = ec2_creds.get('access')
return stack.access_allowed(access_key, resource_name)
def _verify_stack_resource(self, stack, resource_name):
if resource_name not in stack:
raise exception.ResourceNotFound(resource_name=resource_name,
stack_name=stack.name)
resource = stack[resource_name]
if resource.id is None:
raise exception.ResourceNotAvailable(resource_name=resource_name)
@request_context
def describe_stack_resource(self, cnxt, stack_identity, resource_name):
s = self._get_stack(cnxt, stack_identity)
@ -1082,13 +1091,7 @@ class EngineService(service.Service):
LOG.warn(_LW("Access denied to resource %s"), resource_name)
raise exception.Forbidden()
if resource_name not in stack:
raise exception.ResourceNotFound(resource_name=resource_name,
stack_name=stack.name)
resource = stack[resource_name]
if resource.id is None:
raise exception.ResourceNotAvailable(resource_name=resource_name)
self._verify_stack_resource(stack, resource_name)
return api.format_stack_resource(stack[resource_name])
@ -1101,14 +1104,7 @@ class EngineService(service.Service):
# signal doesn't have permission to read the secret key of
# the user associated with the cfn-credentials file
stack = parser.Stack.load(cnxt, stack=s, use_stored_context=True)
if resource_name not in stack:
raise exception.ResourceNotFound(resource_name=resource_name,
stack_name=stack.name)
resource = stack[resource_name]
if resource.id is None:
raise exception.ResourceNotAvailable(resource_name=resource_name)
self._verify_stack_resource(stack, resource_name)
if callable(stack[resource_name].signal):
stack[resource_name].signal(details)
@ -1121,7 +1117,7 @@ class EngineService(service.Service):
if res.name != resource_name and res.id is not None:
res.metadata_update()
return resource.metadata_get()
return stack[resource_name].metadata_get()
@request_context
def find_physical_resource(self, cnxt, physical_resource_id):