mrack fails with traceback on OpenStack provisioning if credentials are not sourced

[pvoborni]

Steps to reproduce:

1. prepare mrack env (e.g. conf file pointing to prov. config, metadatam, db)
2. omit e.g. . config/opestack-credentials.sh
3. mrack up

Current behavior:

It fails with traceback.

Expected behavior:

Mrack prints nice error message saying that it doesn't have credentials for provisioning with OpenStack and hinting that it is done via sourcing.

Additional info

Traceback (most recent call last):
  File "/home/pvoborni/.local/bin/mrack", line 21, in <module>
    run.run()
  File "/home/pvoborni/.local/lib/python3.9/site-packages/mrack/run.py", line 257, in handle
    raise exc
  File "/home/pvoborni/.local/lib/python3.9/site-packages/mrack/run.py", line 244, in handle
    rc = func(*args, **kwargs)
  File "/home/pvoborni/.local/lib/python3.9/site-packages/mrack/run.py", line 267, in run
    mrackcli(obj={})
  File "/usr/lib/python3.9/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/usr/lib/python3.9/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/usr/lib/python3.9/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/lib/python3.9/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/lib/python3.9/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/lib/python3.9/site-packages/click/decorators.py", line 21, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/pvoborni/.local/lib/python3.9/site-packages/mrack/run.py", line 60, in wrapper
    return loop.run_until_complete(f(*args, **kwargs))
  File "/usr/lib64/python3.9/asyncio/base_events.py", line 642, in run_until_complete
    return future.result()
  File "/home/pvoborni/.local/lib/python3.9/site-packages/mrack/run.py", line 159, in up
    await up_action.init(ctx.obj[PROV_CONFIG], ctx.obj[METADATA], provider, ctx.obj[DB])
  File "/home/pvoborni/.local/lib/python3.9/site-packages/mrack/actions/up.py", line 58, in init
    transformer = await self._get_transformer(provider_name)
  File "/home/pvoborni/.local/lib/python3.9/site-packages/mrack/actions/up.py", line 67, in _get_transformer
    await transformer.init(self._config, self._metadata)
  File "/home/pvoborni/.local/lib/python3.9/site-packages/mrack/transformers/transformer.py", line 44, in init
    await self.init_provider()
  File "/home/pvoborni/.local/lib/python3.9/site-packages/mrack/transformers/openstack.py", line 35, in init_provider
    await self._provider.init(image_names=self.config["images"].values())
  File "/home/pvoborni/.local/lib/python3.9/site-packages/mrack/providers/openstack.py", line 89, in init
    self.session = AuthPassword()
  File "/home/pvoborni/.local/lib/python3.9/site-packages/asyncopenstackclient/auth.py", line 66, in __init__
    self._auth_endpoint = self.os_auth_url + '/auth/tokens'
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'

[Tiboris]

Solved here https://github.com/neoave/mrack/pull/85, closing