Add stack files retrieval API

Similar to the recent addition that enables retrieval of the current
environment for a stack, this enables reading the current files map
for a running stack, which is useful if you want to introspect the
current state, and/or deploy another similar stack without necessarily
having the exact command/repo used initially.

APIImpact
Implements: blueprint files-show

Change-Id: I3198b6a7dc06648af24c198d39470f3b0d5d6f11

2 files changed, 12 insertions, 1 deletions

diff --git a/heat/api/openstack/v1/__init__.py b/heat/api/openstack/v1/__init__.py
index 8162a6725..7a782f1f0 100644
--- a/heat/api/openstack/v1/__init__.py
+++ b/heat/api/openstack/v1/__init__.py
@@ -171,7 +171,7 @@ class API(wsgi.Router):
                         'name': 'stack_lookup_subpath',
                         'url': '/stacks/{stack_name}/'
                                '{path:resources|events|template|actions'
-                               '|environment}',
+                               '|environment|files}',
                         'action': 'lookup',
                         'method': 'GET'
                     },
@@ -200,6 +200,12 @@ class API(wsgi.Router):
                         'action': 'environment',
                         'method': 'GET'
                     },
+                    {
+                        'name': 'stack_lookup',
+                        'url': '/stacks/{stack_name}/{stack_id}/files',
+                        'action': 'files',
+                        'method': 'GET'
+                    },
 
                     # Stack update/delete
                     {
diff --git a/heat/api/openstack/v1/stacks.py b/heat/api/openstack/v1/stacks.py
index 31f909e7f..003d65aed 100644
--- a/heat/api/openstack/v1/stacks.py
+++ b/heat/api/openstack/v1/stacks.py
@@ -464,6 +464,11 @@ class StackController(object):
         return env
 
     @util.identified_stack
+    def files(self, req, identity):
+        """Get the files for an existing stack."""
+        return self.rpc_client.get_files(req.context, identity)
+
+    @util.identified_stack
     def update(self, req, identity, body):
         """Update an existing stack with a new template and/or parameters."""
         data = InstantiationData(body)