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pay: Print the HTLC result as soon as it's known

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We used to not print what happened with an HTLC in the `pay`
plugin. This meant that to follow the HTLCs we'd have to map the `pay`
HTLCs to the `lightningd` HTLCs, and then trace that. BY having `pay`
print the outcome as it sees it, we can make that tracking much
simpler, even allowing for tooling to do it for us.

Changelog-None This is a log-only change
This commit is contained in:
Christian Decker
2024-12-10 18:19:23 +01:00
committed by Rusty Russell
parent 9df9441aa3
commit 94e70b8124
1 changed files with 18 additions and 0 deletions
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18
plugins/libplugin-pay.c
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@@ -1639,6 +1639,10 @@ payment_waitsendpay_finished(struct command *cmd,
payment_result_infer(p->route, p->result);
if (p->result->state == PAYMENT_COMPLETE) {
paymod_log(p, LOG_INFORM,
"HTLC result state=success, sent=%s, deliver=%s",
fmt_amount_msat(tmpctx, p->result->amount_sent),
fmt_amount_msat(tmpctx, p->final_amount));
payment_set_step(p, PAYMENT_STEP_SUCCESS);
return payment_continue(p);
}
@@ -1657,9 +1661,23 @@ payment_waitsendpay_finished(struct command *cmd,
payment_addgossip_success,
payment_addgossip_failure, p);
json_add_hex_talarr(req->js, "message", update);
paymod_log(p, LOG_INFORM,
"HTLC result state=failed, sent=%s, todeliver=%s, "
"code=%d (%s)",
fmt_amount_msat(tmpctx, p->result->amount_sent),
fmt_amount_msat(tmpctx, p->final_amount),
p->result->code, p->result->failcodename);
return send_outreq(req);
}
paymod_log(
p, LOG_INFORM,
"HTLC result state=failed, sent=%s, todeliver=%s, code=%d (%s)",
fmt_amount_msat(tmpctx, p->result->amount_sent),
fmt_amount_msat(tmpctx, p->final_amount), p->result->code,
p->result->failcodename);
return payment_addgossip_success(cmd, NULL, NULL, NULL, p);
}