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feat: check pay status before attempting payment

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CLN returns no error when a payment was already completed before.
This commit adds a check to the payment status before attempting to
complete the payment. If the payment was already completed, the API
returns an exception.
This commit is contained in:
fusion44 2023-04-02 16:50:33 +02:00
parent 114b76c3d2
commit 60bb7e519f
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1 changed files with 21 additions and 1 deletions
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22
app/lightning/impl/cln_jrpc.py
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@ -516,6 +516,23 @@ class LnNodeCLNjRPC(LightningNodeBase):
# [retry_for] [maxdelay] [exemptfee] [localinvreqid] [exclude]
# [maxfee] [description]
res = await self._send_request("listpays", {"bolt11": pay_req})
if "error" in res:
e = res["error"]["message"]
if "Invalid invstring: unexpected prefix" in e:
raise HTTPException(
status.HTTP_400_BAD_REQUEST,
detail="invalid bech32 string",
)
self._raise_internal_server_error("checking if invoice was paid", res)
pays = res["result"]["pays"]
if len(pays) > 0 and pays[0]["status"] == "complete":
raise HTTPException(
status.HTTP_409_CONFLICT, detail="invoice is already paid"
)
params = {
"bolt11": pay_req,
"maxfee": fee_limit_msat,
@ -549,7 +566,10 @@ class LnNodeCLNjRPC(LightningNodeBase):
detail="amount must be specified when paying a zero amount invoice",
)
if "amount_msat parameter unnecessary" in message:
if (
"amount_msat parameter unnecessary" in message
or "msatoshi parameter unnecessary" in message
):
raise HTTPException(
status.HTTP_400_BAD_REQUEST,
detail="amount must not be specified when paying a non-zero amount invoice",