Add a new abstraction called span store in bor consensus. This makes the header verification stateless as instead of fetching validator set (of a span) from genesis contract, we rely on span from heimdall itself for validator set. This doesn't change any assumptions for consensus as the data in genesis contracts is written by fetching span details from heimdall in the first place.
This helps us with multiple things such as header verification for snap sync, validating producer set against header's extra data, and using heimdall as a source of truth instead of making a contract call to genesis contract which generally leads to issues when importing side chains (as we need to use the side chain state and not canonical).
Span store is a minimal cache which maintains last 10 spans in memory. It provide simple read methods via span id and block number so that we can use it in consensus.
This PR removes open telemetry based tracing from the whole mining workflow. The tracing extended into consensus and core blockchain functions from miner is also removed in this PR. We weren't checking the tracing from a long time and the way it was implemented increased the code complexity a lot.
Block execution contains the time it takes to fetch state sync data from heimdall, which sometimes returns data with long latency (> 1s). When the latency is significant, the chain execution time will be affected and become inaccurate. This PR isolate the time of heimdall requests from block execution.
This PR changes how sidechains are handled.
Before the merge, it was possible to import a chain with lower td and not set it as canonical. After the merge, we expect every chain that we get via InsertChain to be canonical. Non-canonical blocks can still be inserted
with InsertBlockWIthoutSetHead.
If during the InsertChain, the existing chain is not canonical anymore, we mark it as a sidechain and send the SideChainEvents normally.
This PR adds the bulk verkle witness+proof production at the end of block
production. It reads all data from the tree in one swoop and produces
a verkle proof.
Co-authored-by: Felix Lange <fjl@twurst.com>
Co-authored-by: Felix Lange <fjl@twurst.com>
Co-authored-by: Marius van der Wijden <m.vanderwijden@live.de>
Co-authored-by: lightclient <lightclient@protonmail.com>
