Comment 18 for bug 1871981

We seem to have hit this again on focal testing yesteray. At 16:20 barbican-vault and all other openstack services were Ready; vault was unlocked and all setup.

At 17:20, we started running secrets-storage-relation-changed for an unknown reason, and in that we hit:

2020-09-02 17:20:23 INFO juju-log secrets-storage:48: Retrieving secret-id from vault (http://vault-internal.prodymcprodface.solutionsqa:8200)
2020-09-02 17:20:23 DEBUG jujuc server.go:211 running hook tool "juju-log"
2020-09-02 17:20:23 ERROR juju-log secrets-storage:48: Hook error:
Traceback (most recent call last):
  File "/var/lib/juju/agents/unit-barbican-vault-0/.venv/lib/python3.8/site-packages/charms/reactive/__init__.py", line 74, in main
    bus.dispatch(restricted=restricted_mode)
  File "/var/lib/juju/agents/unit-barbican-vault-0/.venv/lib/python3.8/site-packages/charms/reactive/bus.py", line 390, in dispatch
    _invoke(other_handlers)
  File "/var/lib/juju/agents/unit-barbican-vault-0/.venv/lib/python3.8/site-packages/charms/reactive/bus.py", line 359, in _invoke
    handler.invoke()
  File "/var/lib/juju/agents/unit-barbican-vault-0/.venv/lib/python3.8/site-packages/charms/reactive/bus.py", line 181, in invoke
    self._action(*args)
  File "/var/lib/juju/agents/unit-barbican-vault-0/charm/reactive/barbican_vault_handlers.py", line 94, in plugin_info_barbican_publish
    secret_id = get_secret_id(secrets_storage, current_secret_id)
  File "/var/lib/juju/agents/unit-barbican-vault-0/charm/reactive/barbican_vault_handlers.py", line 59, in get_secret_id
    secret_id = vault_utils.retrieve_secret_id(url, token)
  File "lib/charm/vault_utils.py", line 32, in retrieve_secret_id
    response = client._post('/v1/sys/wrapping/unwrap')
  File "/var/lib/juju/agents/unit-barbican-vault-0/.venv/lib/python3.8/site-packages/hvac/utils.py", line 174, in new_func
    return method(*args, **kwargs)
  File "/var/lib/juju/agents/unit-barbican-vault-0/.venv/lib/python3.8/site-packages/hvac/v1/__init__.py", line 2579, in _post
    return self._adapter.post(*args, **kwargs)
  File "/var/lib/juju/agents/unit-barbican-vault-0/.venv/lib/python3.8/site-packages/hvac/adapters.py", line 107, in post
    return self.request('post', url, **kwargs)
  File "/var/lib/juju/agents/unit-barbican-vault-0/.venv/lib/python3.8/site-packages/hvac/adapters.py", line 304, in request
    utils.raise_for_error(response.status_code, text, errors=errors)
  File "/var/lib/juju/agents/unit-barbican-vault-0/.venv/lib/python3.8/site-packages/hvac/utils.py", line 32, in raise_for_error
    raise exceptions.InvalidRequest(message, errors=errors)
hvac.exceptions.InvalidRequest: wrapping token is not valid or does not exist

This was with cs:~openstack-charmers-next/barbican-vault-50