feat: return partial commitments for pending blocks#933
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mevcommit_getTransactionCommitments previously returned nothing until every provider committed or the transaction landed on-chain, because commitments were only persisted at finalization. Persist commitments as they arrive so the RPC can return the available subset while a block is still pending, letting DApps decide which providers they require a commitment from. - store: add AppendCommitment (incremental) and StoreCommitments (block-change replace); StoreTransaction now reconciles to the finalized set so a failed transaction retains no commitments; index commitments by transaction_hash. - sender: persist commitments as each one arrives during bidding. - handlers: return an empty array instead of an error when a transaction has no commitments yet. Closes primev#732 Signed-off-by: Onyeka Obi <softwareengineerasaservant@isurvivable.cv>
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What
Implements #732.
mevcommit_getTransactionCommitmentsnow returns the available subset ofcommitments for a still-pending block instead of only returning once every provider has committed
(or the tx is on-chain).
Why
Commitments were only written to the store at terminal finalization, so a partial set on a pending
block was invisible to the RPC (it returned an error). DApps that want to judge commitment
sufficiency for a pending tx could not see which providers had committed.
How
store.AppendCommitmentrecords each commitment as it arrives;store.StoreCommitmentsatomically replaces the set on a block change.
store.StoreTransactionreconciles to thefinalized set at settlement (delete-first), so a failed tx retains no commitments and no earlier
block attempt unions into the final answer.
commitmentsis now indexed bytransaction_hash.aborts bidding).
handleGetTxCommitmentsreturns[](not an error) for a tx with no commitments yet.While bidding, the stored set mirrors the sender's in-memory commitment set for the current block
attempt (the sender intentionally retains commitments across a block boundary until a new one
arrives).
Tests
store_test:AppendCommitmentidempotency,StoreCommitmentsreplace + empty no-op,StoreTransactiondelete-first (success replaces, failure clears). Requires Docker(testcontainers).
sender_test: asserts bidding drives incremental persistence.AI-assisted