Fix merge conflicts. Add basic cloudformation support. Closes #111.

moto/cloudformation/models.py

@@ -0,0 +1,70 @@
+import json
+
+from moto.core import BaseBackend
+
+from .parsing import ResourceMap
+from .utils import generate_stack_id
+
+
+class FakeStack(object):
+    def __init__(self, stack_id, name, template):
+        self.stack_id = stack_id
+        self.name = name
+        self.template = template
+
+        template_dict = json.loads(self.template)
+        self.description = template_dict.get('Description')
+
+        self.resource_map = ResourceMap(stack_id, name, template_dict)
+        self.resource_map.create()
+
+    @property
+    def stack_resources(self):
+        return self.resource_map.values()
+
+
+class CloudFormationBackend(BaseBackend):
+
+    def __init__(self):
+        self.stacks = {}
+
+    def create_stack(self, name, template):
+        stack_id = generate_stack_id(name)
+        new_stack = FakeStack(stack_id=stack_id, name=name, template=template)
+        self.stacks[stack_id] = new_stack
+        return new_stack
+
+    def describe_stacks(self, names):
+        stacks = self.stacks.values()
+        if names:
+            return [stack for stack in stacks if stack.name in names]
+        else:
+            return stacks
+
+    def list_stacks(self):
+        return self.stacks.values()
+
+    def get_stack(self, name_or_stack_id):
+        if name_or_stack_id in self.stacks:
+            # Lookup by stack id
+            return self.stacks.get(name_or_stack_id)
+        else:
+            # Lookup by stack name
+            return [stack for stack in self.stacks.values() if stack.name == name_or_stack_id][0]
+
+    # def update_stack(self, name, template):
+    #     stack = self.get_stack(name)
+    #     stack.template = template
+    #     return stack
+
+    def delete_stack(self, name_or_stack_id):
+        if name_or_stack_id in self.stacks:
+            # Delete by stack id
+            return self.stacks.pop(name_or_stack_id, None)
+        else:
+            # Delete by stack name
+            stack_to_delete = [stack for stack in self.stacks.values() if stack.name == name_or_stack_id][0]
+            self.delete_stack(stack_to_delete.stack_id)
+
+
+cloudformation_backend = CloudFormationBackend()