fixing: the 502 error when calling prod API

Author: emdevelopa

backend/src/lib/logger.js

@@ -1,5 +1,6 @@
 import pino from "pino";
 import pinoHttp from "pino-http";
+import crypto from "node:crypto";
 
 // Fields that must never appear in plain-text logs
 const REDACTED_PATHS = [

backend/src/routes/payments.js

@@ -214,6 +214,7 @@ function createPaymentsRouter({
   async function createSession(req, res, next) {
     try {
       const body = req.body;
+      logger.info({ merchantId: req.merchant?.id, amount: body.amount, asset: body.asset }, "DEBUG: createSession started");
 
       // Per-asset payment limit validation (#153)
       const limits = req.merchant.payment_limits;
@@ -303,6 +304,7 @@ function createPaymentsRouter({
         paymentCreatedCounter.inc({ asset: body.asset });
       }
 
+      logger.info({ paymentId: paymentId }, "DEBUG: createSession success");
       res.status(201).json({
         payment_id: paymentId,
         payment_link: paymentLink,
@@ -311,6 +313,7 @@ function createPaymentsRouter({
         branding_config: resolvedBrandingConfig,
       });
     } catch (err) {
+      logger.error({ err, merchantId: req.merchant?.id }, "DEBUG: createSession error");
       if (err.status === 400 && err.details) {
         return res.status(400).json({ error: err.message, ...err.details });
       }

backend/src/server.js

@@ -102,6 +102,16 @@ async function startServer() {
 
   process.on("SIGTERM", () => shutdown("SIGTERM"));
   process.on("SIGINT", () => shutdown("SIGINT"));
+
+  process.on("uncaughtException", (err) => {
+    logger.fatal({ err }, "UNCAUGHT_EXCEPTION: process crashing");
+    // Allow logger to flush before exiting
+    setTimeout(() => process.exit(1), 1000);
+  });
+
+  process.on("unhandledRejection", (reason, promise) => {
+    logger.error({ reason, promise }, "UNHANDLED_REJECTION: a promise was rejected but not caught");
+  });
 }
 
 startServer();