From bd54987e1f2d708f7e9c5e6e903bcd3c4502b495 Mon Sep 17 00:00:00 2001 From: Adam Soltys Date: Wed, 23 Sep 2026 07:31:46 -0700 Subject: lightning: don't wedge the listener on an already-credited preimage Skip settlements whose preimage was already credited instead of retrying until the process exits, and reject previously used preimages when they are queued. Co-Authored-By: Claude Opus 5.5 (1M context) --- lib/lightning.ts | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'lib') diff --git a/lib/lightning.ts b/lib/lightning.ts index 48410ffe..6c37ddf1 100644 --- a/lib/lightning.ts +++ b/lib/lightning.ts @@ -155,9 +155,15 @@ export async function listenForLightning() { }); // credit() may decline a duplicate idempotency claim. Only advance the - // listener once the durable payment pointer proves the ledger write won. - if (!(await getPayment(paymentRequest))) + // listener once the durable payment pointer proves the ledger write won — + // unless the preimage was already credited by an earlier settlement (a + // reused merchant preimage), which can never persist and would otherwise + // wedge the listener in a restart loop. + if (!(await getPayment(paymentRequest))) { + if (preimage && (await db.get(`credited:${preimage}`))) + return warn("preimage already credited, skipping", paymentRequest); throw new Error(`lightning credit did not persist for ${paymentRequest}`); + } })(); // db.set is awaited directly: s() is intentionally fire-and-forget and an -- cgit v1.2.3