WIP WIP WIP: Break our node logic into a three stages system #123
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This was referenced Feb 28, 2024
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This PR aims to build a three stage process to start and maintain a node. This will be helpful in projects like #64 and #115, and the general workflow is:
ChainSeletorwill find the best chain we know about. Currently, it will simply find the most work chain and follow that. But we can add the logic needed for Proof-of-Work fraud proof: Tracker issue #115 here. After this stage finishes, we are guaranteed to be in the most-work chain we've found among our peers (and after Proof-of-Work fraud proof: Tracker issue #115 is finished, we are almost certain that this chain is valid).BackfillNodewill download a range of blocks and verify them. This stage is used to backfill our chain and make sure that: i) this chain is valid ii) the state we started working is the right one.RunningNodeis the same we have now. It handles requests by users, new blocks and so on. AfterChainSelectorreturns, we can start aRunningNodeand multipleSyncPeersin parallel, so our user can start using their node as soon asChainSelectorreturns (which should be fairly quick).RunningNodeshould also download the BIP158 block filters, allowing users to find historical transactions before the backfill process finishes.