Skip formatting log records when Sentry logs are off

sentry_sdk/integrations/logging.py

@@ -395,7 +395,6 @@ def _can_record(self, record: "LogRecord") -> bool:
 
     def emit(self, record: "LogRecord") -> "Any":
         with capture_internal_exceptions():
-            self.format(record)
             if not self._can_record(record):
                 return
 
@@ -420,6 +419,7 @@ def emit(self, record: "LogRecord") -> "Any":
             if not should_capture_logs:
                 return
 
+            self.format(record)
             self._capture_log_from_record(client, record)
 
     def _capture_log_from_record(

tests/integrations/logging/test_logging.py

@@ -8,6 +8,7 @@
 from sentry_sdk.consts import VERSION
 from sentry_sdk.integrations.logging import (
     LoggingIntegration,
+    SentryLogsHandler,
     ignore_logger,
     ignore_logger_for_sentry_logs,
     unignore_logger,
@@ -244,6 +245,23 @@ def test_sentry_logs_collection_off_by_default(sentry_init, capture_items, reque
     assert not items
 
 
+def test_sentry_logs_handler_skips_format_when_disabled(sentry_init):
+    sentry_init(integrations=[LoggingIntegration(capture_sentry_logs=False)])
+    handler = SentryLogsHandler()
+    record = logging.LogRecord(
+        name="test-logger",
+        level=logging.INFO,
+        pathname=__file__,
+        lineno=1,
+        msg="hello %s",
+        args=("world",),
+        exc_info=None,
+    )
+    with mock.patch.object(handler, "format") as formatted:
+        handler.emit(record)
+    formatted.assert_not_called()
+
+
 def test_sentry_logs_collection_opt_in(sentry_init, capture_items, request):
     """Automatic logs capture by Sentry logs needs explicit opt-in via capture_sentry_logs."""
     sentry_init(integrations=[LoggingIntegration(capture_sentry_logs=True)])