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This feature is scheduled for release in
ops 2.0, and is only available when using Juju 3.0.2 or greater.
secret-remove event is fired on the owner of a secret when either:
- All observers tracking a now-outdated revision have updated to tracking a newer one, so the old revision can be removed.
- No observer is tracking an intermediate revision, and a newer one has already been created. So there is a orphaned revision which no observer will ever be able to peek or update to, because there is already a newer one the observer would get instead.
In short, the purpose of this event is to notify the owner of a secret that a specific revision of it is safe to remove: no charm is presently observing it or ever will be able to in the future.
Like all secret events,
secret-remove is automatically triggered by Juju. It is up to the secret owner to create a new revision.
|Scenario||Example Code||Resulting Events|
|Observers update to a newer revision||(on all observers)
Observing this event in
In the Python Operator Framework, you can observe the event like you would any other:
SecretRemoveEvent exposes the attributes it inherits from
SecretEvent as well as a
revision attribute which specifies which revision this event refers to.
A typical implementation of
_on_secret_remove might look like this:
def _on_secret_remove(self, event: SecretRemoveEvent): secret = event.secret # remove the unused revision secret.remove_revision(event.revision)
Last updated 2 months ago.