Add vanish_requests stream subscriber #31
Merged
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This is part of https://github.com/planetary-social/infrastructure/issues/139
Subscribes to the vanish_subscriber stream so we can drop pubkey nodes and their relationships. It also updates the cached counters.
Notice we still would need to add some state to all the subscribers of this stream to avoid accepting republications. We can always restart the processing of the vanish requests from the beginning periodically as a quick cleanup but this will need to be implemented at another moment to be able to hit the deadline.
This was manually tested sucessfully, with more time I'd like to add some tests.