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Add cloudformation update from s3 support (#1377)

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* Fix variable name typo

* Make it possible to delete EC2 instances from cloudformation json

* Add support for updating a cloudformation stack from an s3 template url
This commit is contained in:
William Richard 2017-12-08 05:48:29 -05:00 • committed by Terry Cain
commit 92f5f7b263
4 changed files with 73 additions and 22 deletions
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16
moto/ec2/models.py
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@ -509,6 +509,22 @@ class Instance(TaggedEC2Resource, BotoInstance):
instance.add_tag(tag["Key"], tag["Value"])
return instance
@classmethod
def delete_from_cloudformation_json(cls, resource_name, cloudformation_json, region_name):
ec2_backend = ec2_backends[region_name]
all_instances = ec2_backend.all_instances()
# the resource_name for instances is the stack name, logical id, and random suffix separated
# by hyphens. So to lookup the instances using the 'aws:cloudformation:logical-id' tag, we need to
# extract the logical-id from the resource_name
logical_id = resource_name.split('-')[1]
for instance in all_instances:
instance_tags = instance.get_tags()
for tag in instance_tags:
if tag['key'] == 'aws:cloudformation:logical-id' and tag['value'] == logical_id:
instance.delete(region_name)
@property
def physical_resource_id(self):
return self.id