Stamp mempool tracker entries with the negative of the highest known
block height instead of a fixed -1 sentinel, and trim on abs(height) so
entries whose tx is invalidated before confirming (e.g. by a double
spend) age out after TRACKER_MAX_BLOCK_DEPTH like confirmed ones. The
height is still replaced with the real one once the tx confirms.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- electrum mempool fetch gains an ido filter: state machine spends
(IDO_SIGNATURE in scriptsig) union preinit announcements
(IDO_PREINIT_ANNOUNCEMENT_SIGNATURE in scriptpubkey)
- split tx scanning out of index_block into index_txs and add
index_mempool, which indexes with a -1 sentinel height;
txchain_trim_tracker leaves negative heights alone and the real
height replaces the sentinel once the tx confirms in a block
- block indexing now skips re-creating an ido already seen in the
mempool, only updating its tracker height
- mempool txs are kahn-sorted so txchain parents index before children
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Migrate off the deprecated bitcoincash 0.29 API (Amount/Version types,
FromHex -> FromStr/parse, non-exhaustive Network) across the indexer and
tests.
Add indexing of native token-A <-> token-B (TokenToken) AMM pools:
- tokentoken_pool / tokentoken_pool_history_entry tables in cauldron.db,
created via an always-run idempotent migration (no DB_VERSION bump, so
existing databases upgrade in place)
- block-path indexing sharing the cauldron write transaction and reorg
undo, with creation/swap/withdrawal state tracking and reserve deltas
- mempool indexing: electrum mempool.get filters on the tokentoken
contract code (spends) and the CONJURE op_return hint (creations);
first_seen_timestamp reconciles with mtp on confirmation
- RPC endpoints /tokentoken/pool/active (pair lookup, order-insensitive)
and /tokentoken/tokens
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This makes the application fully async; freeing web server threads to
handle new connections when waiting on SQL queries.
Additionally sqlx will allow easier move to a different database if
needed in the future.
Includes some SQL optimizations as well (slow queries more easliy identifiable
with sqlx).
Introduce a shutdown flag and Rocket fairing that signals background
threads to exit cleanly when Ctrl+C is pressed. Affects the indexing
thread, metrics updater, and block receiver loop.
