From 3ce926f2a289f0390212057927e2c78e8045e802 Mon Sep 17 00:00:00 2001
From: Sai Kumar Battinoju <saibattinoju@rudderstack.com>
Date: Thu, 8 Feb 2024 16:50:32 +0530
Subject: [PATCH] fix: dns resolution error format

---
 src/util/utils.js                                | 6 +++---
 test/__tests__/user_transformation_fetch.test.js | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/util/utils.js b/src/util/utils.js
index 0ba6008368..5d1d265143 100644
--- a/src/util/utils.js
+++ b/src/util/utils.js
@@ -26,20 +26,20 @@ const staticLookup = (transformerVersionId) => async (hostname, _, cb) => {
       transformerVersionId,
       error: 'true',
     });
-    cb(null, `unable to resolve IP address for ${hostname}`, RECORD_TYPE_A);
+    cb(new Error(`unable to resolve IP address for ${hostname}`), null, RECORD_TYPE_A);
     return;
   }
   stats.timing('fetch_dns_resolve_time', resolveStartTime, { transformerVersionId });
 
   if (ips.length === 0) {
-    cb(null, `resolved empty list of IP address for ${hostname}`, RECORD_TYPE_A);
+    cb(new Error(`resolved empty list of IP address for ${hostname}`), null, RECORD_TYPE_A);
     return;
   }
 
   // eslint-disable-next-line no-restricted-syntax
   for (const ip of ips) {
     if (ip.startsWith(LOCALHOST_OCTET)) {
-      cb(null, `cannot use ${ip} as IP address`, RECORD_TYPE_A);
+      cb(new Error(`cannot use ${ip} as IP address`), null, RECORD_TYPE_A);
       return;
     }
   }
diff --git a/test/__tests__/user_transformation_fetch.test.js b/test/__tests__/user_transformation_fetch.test.js
index e37b42ea1e..c9c7899888 100644
--- a/test/__tests__/user_transformation_fetch.test.js
+++ b/test/__tests__/user_transformation_fetch.test.js
@@ -149,7 +149,7 @@ describe("User transformation fetch tests", () => {
       }
       `
     };
-    const errMsg = "request to https://abc.xyz.com/dummyUrl failed, reason: Invalid IP address: unable to resolve IP address for abc.xyz.com";
+    const errMsg = "request to https://abc.xyz.com/dummyUrl failed, reason: unable to resolve IP address for abc.xyz.com";
     
     mockResolver.mockRejectedValue('invalid host');
     const output = await userTransformHandler(inputData, versionId, [], trRevCode, true);
@@ -305,7 +305,7 @@ describe("User transformation fetch tests", () => {
         }
       `
     };
-    const errMsg = "request to https://abc.xyz.com/dummyUrl failed, reason: Invalid IP address: cannot use 127.0.0.1 as IP address";
+    const errMsg = "request to https://abc.xyz.com/dummyUrl failed, reason: cannot use 127.0.0.1 as IP address";
     
     mockResolver.mockResolvedValue(['3.122.122.122', '127.0.0.1']);
     const output = await userTransformHandler(inputData, versionId, [], trRevCode, true);