I'm looking to dynamically update my Chart.yaml file specifically the version when I run a make helm build command.
For example Chart.yaml contains
apiVersion: v1
appVersion "1.0"
description: A helm chart for so and so
name: my app
version: 0.2I'm looking for a way to run make helm build version=0.3 and when that build is complete see the updated version number in that builds Chart.yaml
It's my understanding I can't pass variables to .yaml files so not sure if this is possible?
First of all your Chart.yaml is not valid YAML, you need to insert a value separator (:) before "1.0" on the second line.
Assuming your Makefile looks like:
helm:
python3 updateversion.py Chart.yaml ${version}
cat Chart.yaml, ruamel.yaml is installed for your Python3 and your updateversion.py:
import sys
from pathlib import Path
import ruamel.yaml
yaml_file = Path(sys.argv[1])
yaml = ruamel.yaml.YAML()
yaml.preserve_quotes = True
# uncomment and adapt next line in case defaults don't match your indentation
# yaml.indent(mapping=4, sequence=4, offset=2)
data = yaml.load(yaml_file)
version = sys.argv[2]
if isinstance(data['version'], float):
version = float(version)
data['version'] = version
yaml.dump(data, yaml_file)you can run make helm version=0.3 to get output:
apiVersion: v1
appVersion: "1.0"
description: A helm chart for so and so
name: my app
version: 0.3The trick with testing value for version being a float is necessary as 0.2 is a float when loading YAML, but 0.2.1 is a string. And what you get from the commandline using sys.argv[2] is always a string.
You can replace the cat Chart.yaml line for the target helm with whatever you need to run with the updated file.