Convert docker env files for use as kubernetes secrets

env2secrets.py

#!/usr/bin/python3

import argparse
import sys

from base64 import b64encode
from string import Template

parser = argparse.ArgumentParser()
parser.add_argument('env_file', nargs='?', type=argparse.FileType('r'), default=sys.stdin)
parser.add_argument('--gen-env', action='store_true', default=False)
args = parser.parse_args()

env = {}

t = Template("""\
        - name: $name
          valueFrom:
            secretKeyRef:
              name: backend-env
              key: $key""")

for line in args.env_file.readlines():
    stripped = line.strip()
    if not stripped or stripped.startswith('#'):
        continue
    var, value = stripped.split('=')
    env[var] = value

if args.gen_env:
    for var in env.keys():
        s = t.substitute(
            name=var.upper(),
            key=var.lower(),
        )
        print(s)
else:
    for var, value in env.items():
        print('  {}: {!s}   # {}'.format(
            var.lower(), b64encode(value.encode()).decode('ascii'), value))