Add support for Template Outputs. Outputs can be referenced using normal reference syntax.

expandybird/expansion/expansion.py

@@ -307,10 +307,19 @@ def ExpandTemplate(resource, imports, env, validate_schema=False):
         source_file,
         'Unable to find source file %s in imports.' % (source_file))
 
-  # source_file could be a short version of the template (say github short name)
-  # so we need to potentially map this into the fully resolvable name.
-  if 'path' in imports[source_file] and imports[source_file]['path']:
-      path = imports[source_file]['path']
+  if isinstance(imports[source_file], dict):
+    # This code path assumes a different structure for the 'imports' param.
+    # Map of String (name) to Dict ('path', 'content').
+    #
+    # source_file could be a short version of the template
+    # (say github short name)
+    # so we need to potentially map this into the fully resolvable name.
+    if 'path' in imports[source_file] and imports[source_file]['path']:
+        path = imports[source_file]['path']
+    content = imports[source_file]['content']
+  else:
+    path = source_file
+    content = imports[source_file]
 
   resource['imports'] = SimpleImportMap(imports)
 
@@ -332,11 +341,11 @@ def ExpandTemplate(resource, imports, env, validate_schema=False):
 
   if path.endswith('jinja') or path.endswith('yaml'):
     expanded_template = ExpandJinja(
-        source_file, imports[source_file]['content'], resource, imports)
+        source_file, content, resource, imports)
   elif path.endswith('py'):
     # This is a Python template.
     expanded_template = ExpandPython(
-        imports[source_file]['content'], source_file, resource)
+        content, source_file, resource)
   else:
     # The source file is not a jinja file or a python file.
     # This in fact should never happen due to the IsTemplate check above.