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#!/usr/bin/env python3
import os
import argparse
import json
import yaml
import jinja2
# Load settings file
with open("DockerSettings.yaml", 'r') as yaml_file:
yaml_data = yaml.safe_load(yaml_file)
settings_env = jinja2.Environment(
loader=jinja2.FileSystemLoader(os.getcwd()),
)
settings_yaml = yaml.safe_load(settings_env.get_template("DockerSettings.yaml").render(yaml_data))
args_parser = argparse.ArgumentParser()
args_parser.add_argument('template_file', help='Jinja2 template file to render.')
args_parser.add_argument('render_vars', help='JSON-encoded data to pass to the templating engine.')
cli_args = args_parser.parse_args()
# Merge the default config yaml with the json arguments given.
render_vars = json.loads(cli_args.render_vars)
settings_yaml.update(render_vars)
environment = jinja2.Environment(
loader=jinja2.FileSystemLoader(os.getcwd()),
trim_blocks=True,
)
print(environment.get_template(cli_args.template_file).render(settings_yaml))
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