KarpelesLab / libwallet / 24436853444

25%

Build Type

push

github

Committed by MagicalTux

Commit Message

on-chain tx-history backfill (EVM; modchain + Otterscan)

Populates the local Transaction table with on-chain activity for the
current (account, network) so `client.transactions.list()` actually
reflects the account — incoming sends, activity from other devices,
and pre-restore history — not just txs this install broadcast.

Go (wltbase/tx_history.go):
- scheduleTxHistoryBackfill(env, acct, net) — idempotent,
  goroutine-local, bounded by a 45 s timeout and 40 pages.
- backfillEVMFromModchain: paginated modchain_historyByAddress,
  short-circuits when it sees a tx it already has (O(page-size)
  on warm cache).
- backfillEVMFromOtterscan: same shape via ots_searchTransactionsAfter
  (erigon v3 + Otterscan extension) — used as a fallback when the
  RPC doesn't expose modchain_*.
- Dedup by (Hash, Network) lookup before insert; locally-built txs
  are never overwritten.
- Graceful fallthrough: either path failing (method-not-found,
  auth, rate-limit) is an info log, not an error — the user still
  sees their locally-built txs.
- v1: EVM only. BTC / Solana have different indexing stories
  (xpub-scan + getSignaturesForAddress); follow-up.

Triggers:
- wltacct.accountSetCurrent and wltnet.networkSetCurrent each emit
  a {type}:current_changed event on the env emitter hub after
  saving. wltbase.watchCurrentChanges listens on both and schedules
  a sweep for the now-current (account, network) pair. Initial
  sweep runs at env startup too.
- When new rows are inserted, broadcast tx:history_updated
  {account, network, count}.

Dart:
- New TxHistoryUpdatedEvent sealed subclass + client.txHistoryUpdates
  stream. Host rebinds its transaction list on each event.
- Barrel export updated.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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