From: Daniele Varrazzo <daniele.varrazzo@gmail.com>
Date: Tue, 29 Apr 2025 14:14:40 +0000 (+0200)
Subject: chore: add debug logging at connection time
X-Git-Tag: 3.2.7^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=55965e71b4bf4de56c5c6621ce5c9a91f1c8c3e0;p=thirdparty%2Fpsycopg.git

chore: add debug logging at connection time

Only added to the Python implementation for the moment.

See #888
---

diff --git a/psycopg/psycopg/generators.py b/psycopg/psycopg/generators.py
index 2cd15c37d..bf4f03486 100644
--- a/psycopg/psycopg/generators.py
+++ b/psycopg/psycopg/generators.py
@@ -65,7 +65,14 @@ def _connect(conninfo: str, *, timeout: float = 0.0) -> PQGenConn[PGconn]:
     """
     deadline = monotonic() + timeout if timeout else 0.0
 
+    # To debug slowdown during connection:
+    #
+    #   $ PSYCOPG_IMPL=python python
+    #   >>> import logging
+    #   >>> logging.basicConfig(level=logging.DEBUG, format='%(asctime)s %(message)s')
+
     conn = pq.PGconn.connect_start(conninfo.encode())
+    logger.debug("connection started: %s", conn)
     while True:
         if conn.status == BAD:
             encoding = conninfo_encoding(conninfo)
@@ -74,6 +81,7 @@ def _connect(conninfo: str, *, timeout: float = 0.0) -> PQGenConn[PGconn]:
             )
 
         status = conn.connect_poll()
+        logger.debug("connection polled: %s", conn)
 
         if status == POLL_READING or status == POLL_WRITING:
             wait = WAIT_R if status == POLL_READING else WAIT_W