create_config_minimal.py

# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0

"""
Creates a minimal configuration needed to successfully deploy the component for a
given domain name or IP address. It is intended to only be used on the default
TTS configuration in the repository, for quick-start non-production purposes.
Normally the user should hand configure the stack instead. Note: the default
configuration is suitable only for x86-compatible Linux hosts.

Example execution:
python3 create_config_minimal.py example.com
"""

import argparse
import secrets

STACK_CONFIG_YAML = 'tts-config/config/stack/ttn-lw-stack-docker.yml'
DEFAULT_DOMAIN = 'thethings.example.com'

parser = argparse.ArgumentParser(description='Create minimal TTS configuration file')
parser.add_argument('domain', help='Domain name or IP address of deployed TTS (Example: example.com)')
args = parser.parse_args()

with open(STACK_CONFIG_YAML, 'r', encoding="utf-8") as stack_config_file:
    stack_config_file_str = stack_config_file.read()

stack_config_file_str = stack_config_file_str.replace(DEFAULT_DOMAIN, args.domain)
stack_config_file_str = stack_config_file_str.replace('block-key: ""', f'block-key: "{secrets.token_hex(32)}"')
stack_config_file_str = stack_config_file_str.replace('hash-key: ""', f'hash-key: "{secrets.token_hex(64)}"')
stack_config_file_str = stack_config_file_str.replace('client-secret: "console"',
                                                      f'client-secret: "{secrets.token_hex(32)}"')

with open(STACK_CONFIG_YAML, 'w', encoding="utf-8") as stack_config_file:
    stack_config_file.write(stack_config_file_str)

print(f'{STACK_CONFIG_YAML} updated with minimal configuration')