From: deeshantk <deeshantkotnala@gmail.com>
Date: Sat, 8 Nov 2025 15:52:45 +0000 (+0530)
Subject: fix(conninfo): improve error message when host resolution fails
X-Git-Tag: 3.3.0~21^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aeb610641cbd13e55d9d562b2d8ef0d6e68e8612;p=thirdparty%2Fpsycopg.git

fix(conninfo): improve error message when host resolution fails
---

diff --git a/psycopg/psycopg/_conninfo_attempts.py b/psycopg/psycopg/_conninfo_attempts.py
index f853e0537..b619ae78e 100644
--- a/psycopg/psycopg/_conninfo_attempts.py
+++ b/psycopg/psycopg/_conninfo_attempts.py
@@ -44,13 +44,15 @@ def conninfo_attempts(params: ConnMapping) -> list[ConnDict]:
         try:
             attempts.extend(_resolve_hostnames(attempt))
         except OSError as ex:
-            logger.debug("failed to resolve host %r: %s", attempt.get("host"), ex)
-            last_exc = ex
+            last_exc = e.OperationalError(
+                f"failed to resolve host {attempt.get('host')!r}: {ex}"
+            )
+            logger.debug("%s", last_exc)
 
     if not attempts:
         assert last_exc
         # We couldn't resolve anything
-        raise e.OperationalError(str(last_exc))
+        raise last_exc
 
     if get_param(params, "load_balance_hosts") == "random":
         shuffle(attempts)
diff --git a/psycopg/psycopg/_conninfo_attempts_async.py b/psycopg/psycopg/_conninfo_attempts_async.py
index 08f363d1a..21228b4d4 100644
--- a/psycopg/psycopg/_conninfo_attempts_async.py
+++ b/psycopg/psycopg/_conninfo_attempts_async.py
@@ -42,13 +42,15 @@ async def conninfo_attempts_async(params: ConnMapping) -> list[ConnDict]:
         try:
             attempts.extend(await _resolve_hostnames(attempt))
         except OSError as ex:
-            logger.debug("failed to resolve host %r: %s", attempt.get("host"), ex)
-            last_exc = ex
+            last_exc = e.OperationalError(
+                f"failed to resolve host {attempt.get('host')!r}: {ex}"
+            )
+            logger.debug("%s", last_exc)
 
     if not attempts:
         assert last_exc
         # We couldn't resolve anything
-        raise e.OperationalError(str(last_exc))
+        raise last_exc
 
     if get_param(params, "load_balance_hosts") == "random":
         shuffle(attempts)