AttributeError: 'ConfigData' object has no attribute 'get'

[Haw Loeung]

Hi,

Trying to deploy this charm, getting this:

2023-08-29 03:12:58 INFO juju.worker.uniter resolver.go:155 awaiting error resolution for "config-changed" hook
2023-08-29 03:13:00 DEBUG unit.ubuntu-advantage/4.juju-log server.go:316 Operator Framework 1.5.3 up and running.
2023-08-29 03:13:00 DEBUG unit.ubuntu-advantage/4.juju-log server.go:316 Envvar 'no_proxy' => '127.0.0.1,localhost,::1'
2023-08-29 03:13:00 DEBUG unit.ubuntu-advantage/4.juju-log server.go:316 Envvar 'http_proxy' => ''
2023-08-29 03:13:00 DEBUG unit.ubuntu-advantage/4.juju-log server.go:316 Envvar 'https_proxy' => ''
2023-08-29 03:13:00 DEBUG unit.ubuntu-advantage/4.juju-log server.go:316 Emitting Juju event config_changed.
2023-08-29 03:13:00 INFO unit.ubuntu-advantage/4.juju-log server.go:316 Beginning config_changed
2023-08-29 03:13:00 ERROR unit.ubuntu-advantage/4.juju-log server.go:316 Uncaught exception while in charm code:
Traceback (most recent call last):
  File "./src/charm.py", line 195, in <module>
    main(UbuntuAdvantageCharm)
  File "/var/lib/juju/agents/unit-ubuntu-advantage-4/charm/venv/ops/main.py", line 438, in main
    _emit_charm_event(charm, dispatcher.event_name)
  File "/var/lib/juju/agents/unit-ubuntu-advantage-4/charm/venv/ops/main.py", line 150, in _emit_charm_event
    event_to_emit.emit(*args, **kwargs)
  File "/var/lib/juju/agents/unit-ubuntu-advantage-4/charm/venv/ops/framework.py", line 355, in emit
    framework._emit(event) # noqa
  File "/var/lib/juju/agents/unit-ubuntu-advantage-4/charm/venv/ops/framework.py", line 856, in _emit
    self._reemit(event_path)
  File "/var/lib/juju/agents/unit-ubuntu-advantage-4/charm/venv/ops/framework.py", line 931, in _reemit
    custom_handler(event)
  File "./src/charm.py", line 98, in config_changed
    self._handle_ppa_state()
  File "./src/charm.py", line 108, in _handle_ppa_state
    ppa = self.config.get("ppa", "").strip()
AttributeError: 'ConfigData' object has no attribute 'get'
2023-08-29 03:13:00 ERROR juju.worker.uniter.operation runhook.go:153 hook "config-changed" (via hook dispatching script: dispatch) failed: exit status 1
2023-08-29 03:13:00 INFO juju.worker.uniter resolver.go:155 awaiting error resolution for "config-changed" hook

Tried setting the `ppa` config to `ppa:ua-client/stable` but still doesn't seem to help.

This is with r39.

[Colin Misare (cmisare)]

This looks like https://github.com/canonical/operator/issues/827 , and it's likely that re-building the charm for xenial pulling in ops 1.5.3 or newer will fix this issue.