fix exceptions related to btcpay HTTP calls. better cleanup of expired

btcpay invoices.

capsulflask/payment.py

@@ -3,6 +3,7 @@ import json
 import time
 import decimal
 import re
+import sys
 
 from time import sleep
 from flask import Blueprint
@@ -19,7 +20,7 @@ from werkzeug.exceptions import abort
 
 from capsulflask.auth import account_required
 
-from capsulflask.db import get_model
+from capsulflask.db import get_model, my_exec_info_message
 
 bp = Blueprint("payment", __name__, url_prefix="/payment")
 
@@ -80,15 +81,24 @@ def btcpay_payment():
 
 
 def poll_btcpay_session(invoice_id):
-  # so you better make sure to get the invoice directly from the horses mouth! 
-  invoice = current_app.config['BTCPAY_CLIENT'].get_invoice(invoice_id)
+  
+  invoice = None
+  try:
+    invoice = current_app.config['BTCPAY_CLIENT'].get_invoice(invoice_id)
+  except:
+    current_app.logger.error(f"""
+      error was thrown when contacting btcpay server:
+      {my_exec_info_message(sys.exc_info())}"""
+    )
+    return [503, "error was thrown when contacting btcpay server"]
+    
 
   if invoice['currency'] != "USD":
     return [400, "invalid currency"]
   
   dollars = invoice['price']
 
-  current_app.logger.info(f"got btcpay webhook with invoice_id={invoice_id}, status={invoice['status']} dollars={dollars}")
+  current_app.logger.info(f"poll_btcpay_session invoice_id={invoice_id}, status={invoice['status']} dollars={dollars}")
 
   if invoice['status'] == "paid" or invoice['status'] == "confirmed" or invoice['status'] == "complete":
     success_account = get_model().consume_payment_session("btcpay", invoice_id, dollars)
@@ -100,6 +110,7 @@ def poll_btcpay_session(invoice_id):
     get_model().btcpay_invoice_resolved(invoice_id, True)
   elif invoice['status'] == "expired" or invoice['status'] == "invalid":
     get_model().btcpay_invoice_resolved(invoice_id, False)
+    get_model().delete_payment_session("btcpay", invoice_id)
   
   return [200, "ok"]
 
@@ -113,6 +124,7 @@ def btcpay_webhook():
   request_data = json.loads(request.data)
   invoice_id = request_data['id']
 
+  # so you better make sure to get the invoice directly from the horses mouth! 
   result = poll_btcpay_session(invoice_id)
 
   abort(result[0], result[1])