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coin-mvt: remove all the spend-tracking

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We're not going to do 'spend tracks' any more; instead we'll emit an
event whenever an output is included in a broadcast tx

(even if the broadcast fails!!)
This commit is contained in:
niftynei 2021-11-10 15:54:56 -06:00 • committed by Rusty Russell
parent 9b1a0f9b7b
commit e791efe23b
3 changed files with 16 additions and 124 deletions
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10
common/coin_mvt.c
View file

@ -257,16 +257,6 @@ struct chain_coin_mvt *new_coin_pushed(const tal_t *ctx,
false);
}
struct chain_coin_mvt *new_coin_spend_track(const tal_t *ctx,
const struct bitcoin_txid *txid,
const struct bitcoin_outpoint *outpoint,
u32 blockheight)
{
return new_chain_coin_mvt_sat(ctx, "wallet", txid, outpoint,
NULL, blockheight, 0, AMOUNT_SAT(0),
false);
}
struct coin_mvt *finalize_chain_mvt(const tal_t *ctx,
const struct chain_coin_mvt *chain_mvt,
const char *bip173_name,

4
common/coin_mvt.h
View file

@ -170,10 +170,6 @@ struct chain_coin_mvt *new_coin_onchain_htlc_sat(const tal_t *ctx,
u32 blockheight,
struct amount_sat amount,
bool is_credit);
struct chain_coin_mvt *new_coin_spend_track(const tal_t *ctx,
const struct bitcoin_txid *txid,
const struct bitcoin_outpoint *outpoint,
u32 blockheight);
struct chain_coin_mvt *new_coin_pushed(const tal_t *ctx,
const char *account_name,
const struct bitcoin_txid *txid,

126
lightningd/chaintopology.c
View file

@ -652,102 +652,25 @@ static void updates_complete(struct chain_topology *topo)
next_topology_timer(topo);
}
static void record_utxo_spent(struct lightningd *ld,
const struct bitcoin_txid *txid,
const struct bitcoin_outpoint *outpoint,
u32 blockheight,
struct amount_sat *input_amt)
static void record_wallet_spend(struct lightningd *ld,
struct bitcoin_outpoint *outpoint,
struct bitcoin_txid *txid,
u32 tx_blockheight)
{
struct utxo *utxo;
struct chain_coin_mvt *mvt;
u8 *ctx = tal(NULL, u8);
utxo = wallet_utxo_get(ctx, ld->wallet, outpoint);
/* Find the amount this was for */
utxo = wallet_utxo_get(tmpctx, ld->wallet, outpoint);
if (!utxo) {
log_broken(ld->log, "No record of utxo %s",
type_to_string(tmpctx, struct bitcoin_outpoint,
outpoint));
type_to_string(tmpctx, struct bitcoin_outpoint,
outpoint));
return;
}
*input_amt = utxo->amount;
mvt = new_coin_spend_track(ctx, txid, outpoint, blockheight);
notify_chain_mvt(ld, mvt);
tal_free(ctx);
}
static void record_outputs_as_withdraws(const tal_t *ctx,
struct lightningd *ld,
const struct bitcoin_tx *tx,
const struct bitcoin_txid *txid,
u32 blockheight)
{
struct chain_coin_mvt *mvt;
struct bitcoin_outpoint outpoint;
outpoint.txid = *txid;
for (outpoint.n = 0; outpoint.n < tx->wtx->num_outputs; outpoint.n++) {
struct amount_asset asset;
struct amount_sat outval;
if (elements_tx_output_is_fee(tx, outpoint.n))
continue;
asset = bitcoin_tx_output_get_amount(tx, outpoint.n);
assert(amount_asset_is_main(&asset));
outval = amount_asset_to_sat(&asset);
mvt = new_coin_withdrawal_sat(ctx, "wallet", txid,
&outpoint, blockheight,
outval);
notify_chain_mvt(ld, mvt);
}
}
static void record_tx_outs_and_fees(struct lightningd *ld,
const struct bitcoin_tx *tx,
const struct bitcoin_txid *txid,
u32 blockheight,
struct amount_sat inputs_total,
bool our_tx)
{
struct amount_sat fee, out_val;
struct chain_coin_mvt *mvt;
bool ok;
struct wally_psbt *psbt = NULL;
u8 *ctx = tal(NULL, u8);
/* We own every input on this tx, so track withdrawals precisely */
if (our_tx) {
record_outputs_as_withdraws(ctx, ld, tx, txid, blockheight);
fee = bitcoin_tx_compute_fee_w_inputs(tx, inputs_total);
goto log_fee;
}
/* FIXME: look up stashed psbt! */
if (!psbt) {
fee = bitcoin_tx_compute_fee_w_inputs(tx, inputs_total);
ok = amount_sat_sub(&out_val, inputs_total, fee);
assert(ok);
/* We don't have detailed withdrawal info for this tx,
* so we log the wallet withdrawal as a single entry */
mvt = new_coin_withdrawal_sat(ctx, "wallet", txid, NULL,
blockheight, out_val);
notify_chain_mvt(ld, mvt);
goto log_fee;
}
fee = AMOUNT_SAT(0);
/* Note that to figure out the *total* 'onchain'
* cost of a channel, you'll want to also include
* fees logged here, to the 'wallet' account (for funding tx).
* You can do this in post by accounting for any 'chain_fees' logged for
* the funding txid when looking at a channel. */
log_fee:
notify_chain_mvt(ld,
new_coin_chain_fees_sat(ctx, "wallet", txid,
blockheight, fee));
tal_free(ctx);
notify_chain_mvt(ld, new_coin_wallet_withdraw(tmpctx, txid, outpoint,
tx_blockheight,
utxo->amount, WITHDRAWAL));
}
/**
@ -758,37 +681,20 @@ static void topo_update_spends(struct chain_topology *topo, struct block *b)
const struct short_channel_id *spent_scids;
for (size_t i = 0; i < tal_count(b->full_txs); i++) {
const struct bitcoin_tx *tx = b->full_txs[i];
bool our_tx = true, includes_our_spend = false;
struct bitcoin_txid txid;
struct amount_sat inputs_total = AMOUNT_SAT(0);
txid = b->txids[i];
for (size_t j = 0; j < tx->wtx->num_inputs; j++) {
struct bitcoin_outpoint outpoint;
bool our_spend;
bitcoin_tx_input_get_outpoint(tx, j, &outpoint);
our_spend = wallet_outpoint_spend(
topo->ld->wallet, tmpctx, b->height, &outpoint);
our_tx &= our_spend;
includes_our_spend |= our_spend;
if (our_spend) {
struct amount_sat input_amt;
bool ok;
if (wallet_outpoint_spend(topo->ld->wallet, tmpctx,
b->height, &outpoint))
record_wallet_spend(topo->ld, &outpoint,
&b->txids[i], b->height);
record_utxo_spent(topo->ld, &txid, &outpoint,
b->height, &input_amt);
ok = amount_sat_add(&inputs_total, inputs_total, input_amt);
assert(ok);
}
}
if (includes_our_spend)
record_tx_outs_and_fees(topo->ld, tx, &txid,
b->height, inputs_total, our_tx);
}
/* Retrieve all potential channel closes from the UTXO set and
* tell gossipd about them. */
spent_scids =