cli.py

"""

script name [TODO]
====================

.. code-block:: bash

    Usage: script name [OPTIONS]

      notes: - first call init_db(dns=mysql_dsn(params from config)) - then create
      a session (as in unit test) - ... and perform the db queries

    Options:
      --config FILENAME  config filename  [required]
      --fqdn TEXT        config filename  [required]
      --help             Show this message and exit.

The configuration filename must be formatted according
to this schema:

    .. asjson::
       resource_management.config.CONFIG_SCHEMA


.. todo::

    add a console script alias and change the name (cli.py) below


"""
import json

import click
from jsonschema.exceptions import ValidationError


def _validate_config(_unused_ctx, _unused_param, file):
    try:
        params = json.loads(file.read())
        return params
    except (json.JSONDecodeError, ValidationError):
        raise click.BadParameter('config file is not valid json')


@click.command()
@click.option(
    '--config',
    required=True,
    type=click.File('r'),
    help='config filename',
    callback=_validate_config)
@click.option(
    '--fqdn',
    required=True,
    type=click.STRING,
    help='config filename')
def cli(config, fqdn):
    """
    notes:
    - first call init_db(dns=mysql_dsn(params from config))
    - then create a session (as in unit test)
    - ... and perform the db queries
    """
    print(config)
    print(fqdn)


if __name__ == '__main__':
    cli()