file lookup returning <type 'unicode'> where it previously returned <class 'troposphere.AWSHelperFn'> #645
Description
As of 1.4.0, the use of the ${file parameterized } lookup no longer works with blueprints using variable type of troposphere.AWSHelperFn. This was working in previous versions - most recently 1.3.0.
Error
File "/usr/local/lib/python2.7/site-packages/stacker/plan.py", line 93, in _run_once
status = self.fn(self.stack, status=self.status)
File "/usr/local/lib/python2.7/site-packages/stacker/actions/build.py", line 321, in _launch_stack
stack.resolve(self.context, self.provider)
File "/usr/local/lib/python2.7/site-packages/stacker/stack.py", line 196, in resolve
self.blueprint.resolve_variables(self.variables)
File "/usr/local/lib/python2.7/site-packages/stacker/blueprints/base.py", line 452, in resolve_variables
self.name
File "/usr/local/lib/python2.7/site-packages/stacker/blueprints/base.py", line 226, in resolve_variable
value = validate_variable_type(var_name, var_type, value)
File "/usr/local/lib/python2.7/site-packages/stacker/blueprints/base.py", line 147, in validate_variable_type
"type: %s." % (var_name, var_type, type(value))
ValueError: Value for variable ExampleParameter must be of type <class 'troposphere.AWSHelperFn'>. Actual type: <type 'unicode'>.
System Information
Operating System: Mac OS X 10.13.6 build 17G65
Python Version: 2.7.14
Stacker Version: 1.4.0
Files
├── top-level-folder
│ ├── blueprints
│ │ ├── __init__.py
│ │ └── example_blueprint.py
│ ├── file-to-reference.json
│ ├── example.env
│ └── stacker-config.yaml
stacker-config.yaml
namespace: example
stacker_bucket: ""
sys_path: ./
stacks:
example-stack:
class_path: blueprints.example_blueprint.BlueprintClass
enabled: true
variables:
ExampleParameter: ${file parameterized:file://file-to-reference.json}
blueprints/example_blueprint.py
from troposphere import AWSHelperFn
from stacker.blueprints.base import Blueprint
class BlueprintClass(Blueprint):
VARIABLES = {
'ExampleParameter': {
'type': AWSHelperFn
}
}