Hello i want to overwrite an env var in a helm chart via tra Pulumi Community #python

Hello i want to overwrite an env_var in a helm cha...

fierce-market-67222

02/21/2022, 1:21 PM

Hello i want to overwrite an env_var in a helm chart via transformations, the code is below, any ideea how can i get this done? Thank you

Copy code

def set_deployment_env_var(obj, opts):
    if obj["kind"] == "Deployment":
        obj["spec"]["template"]["spec"]["containers[0]"] = [
            {
                "env": [
                    {
                        "name": "RELEASE_DATE",
                        "value": "....."
                    },
                ]
            }
        ]

prehistoric-activity-61023

02/21/2022, 2:45 PM

hmm, does it work for you?

prehistoric-activity-61023

02/21/2022, 2:46 PM

the part

obj["spec"]["template"]["spec"]["containers[0]"]

looks suspicious to me at the first glance

prehistoric-activity-61023

02/21/2022, 2:47 PM

I haven’t tested that but I’d write:

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obj["spec"]["template"]["spec"]["containers"][0]["env"] = ...

I strongly doubt something in the middle converts

containers

array so it’s accessible under

containers[X]

-like keys

prehistoric-activity-61023

02/21/2022, 2:50 PM

If you ask how to overwrite an entry within a list in python, you can do something like that:

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from typing import List, Dict

...

def overwrite_env(envs: List[Dict], name: str, new_value: str) -> bool:
  for env in envs:
    if env["name"] == name:
      env["value"] = new_value
      return True
  return False

...

def set_deployment_env_var(obj, opts):
    if obj["kind"] == "Deployment":
        envs = obj["spec"]["template"]["spec"]["containers"][0]["env"]
        overwrite_env(envs, "RELASE_DATE", "my-new-value-as-string")

fierce-market-67222

02/21/2022, 9:00 PM

thank you worked like a charm 😄

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