POS efficient l1 polling #2506
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POS efficient l1 polling #2506
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Closes ##2491 Begin to add chunked fetching of stake table events.
* try to get tables in `get_stake_tables` * if not available get events from contract
And some cleanup
And have it return `Option`
Pass fetch_stake_tables test
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Closes ##2491
This PR:
Asynchronously updates stake table cache by listening for
L1Event::NewHead. This happens in a second update loop thread (added toL1Client.update_tasks). On each such event, stake table events starting atL1State.snapshot.headand ending on the block received in theNewHeadevent. This should be safe sinceL1State.snapshot.headin initialized to 0. So the first such event will be a large update from block0to currenthead. Following updates will be small.