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Title
# general
b

bored-barista-23480

01/25/2022, 12:42 PM
Hi folks! I have some trouble using transformations on a K8s config file. It's essentially the same as in this [Example](https://www.pulumi.com/docs/guides/adopting/from_kubernetes/) (under Configuration Transformations). I check for the kind of the resource and if it is a certain type I change a value. But I get the error:
TypeError: 'ResourceTransformationArgs' object is not subscriptable
. I could not find any mention of this error specific to this class. I also could't find any helpful examples of how to use transformations other than the mentioned one. Anyone have a clue why it does not work and how to fix it?
p

prehistoric-activity-61023

01/25/2022, 1:40 PM
it looks like a python error - you can get it when you want to use object like a dict, that is instead of
obj.a
, you try to use
obj["a"]
let me try to repro it locally, maybe docs are not up-to-date
It works for me on: • Python 3.8.5 • Pulumi 3.22.1 • pulumi-kubernetes==3.14.1
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import pulumi
import pulumi_kubernetes as k8s

# Create resources from standard Kubernetes guestbook YAML example.
def make_frontend_public(obj):
    if obj['kind'] == "Service" and obj['metadata']['name'] == "frontend":
        obj['spec']['type'] = "LoadBalancer"

guestbook = k8s.yaml.ConfigFile('guestbook', 'guestbook-all-in-one.yaml', transformations=[make_frontend_public])
(it’s copy’n’paste example from the docs)
@bored-barista-23480 can you paste your environment setup here? Things like: • python version
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python --version
• pulumi cli version
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pulumi version
• python modules
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(within venv) pip freeze | grep pulumi
You can also try to upgrade the dependencies first and see if that resolves the issue.
b

bored-barista-23480

01/25/2022, 2:31 PM
Python:
3.8.10
Pulumi:
3.22.1
Modules:
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pulumi==3.22.1
pulumi-aws==4.35.0
pulumi-eks==0.36.0
pulumi-kubernetes==3.14.1
Obviously I am trying to use the subscript functionality. But that's how it is used in the example as well. I think I even used it like that before. That's why I'm irritated.
p

prehistoric-activity-61023

01/25/2022, 3:00 PM
(yeah, just to be clear, I successfully run the code above that uses subscription as well)
what’s weird, you’ve got the same versions as I have (except python but that shouldn’t cause such an issue)
oh wait… I think I know that might be wrong (let me check, it’s just a guess)
@bored-barista-23480 make sure you’re passing
transformations
as
ConfigMap
field and not using generic resource transformations available through
opts
and `pulumi.ResourceOptions`: WORKING EXAMPLE
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guestbook = k8s.yaml.ConfigFile(
  'guestbook',
  'guestbook-all-in-one.yaml', 
  transformations=[make_frontend_public],
)
ERROR
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guestbook = k8s.yaml.ConfigFile(
  'guestbook',
  'guestbook-all-in-one.yaml', 
  opts=pulumi.ResourceOptions(transformations=[make_frontend_public]),
)
b

bored-barista-23480

01/25/2022, 3:23 PM
Ah! Yes, that solves the issue! I just missed that little difference. Thank you very much! 🙂
🙌 1
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