🔇(backend) remove Sentry duplicated warning/errors

The `DockerflowMiddleware` job is to add logs, sadly the
Sentry LoggingIntegration also catch these logs (at
level WARNING and above) which results in an extra alert
for the same purpose (the exception + the logger.error).

see https://github.com/mozilla-services/Dockerflow/blob/main/docs/mozlog.md

The fix is to ask Sentry to ignore this specific loggger
(`request.summary`).

CHANGELOG.md

@@ -8,7 +8,10 @@ and this project adheres to
 
 ## [Unreleased]
 
+### Fixed
+
 - 🔧(sentry) restore default integrations
+- 🔇(backend) remove Sentry duplicated warning/errors
 - 👷(ci) add sharding e2e tests  #467
 
 ## [1.4.1] - 2024-10-23

src/backend/people/settings.py

@@ -18,6 +18,7 @@ from django.utils.translation import gettext_lazy as _
 import sentry_sdk
 from configurations import Configuration, values
 from sentry_sdk.integrations.django import DjangoIntegration
+from sentry_sdk.integrations.logging import ignore_logger
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
@@ -492,6 +493,9 @@ class Base(Configuration):
             with sentry_sdk.configure_scope() as scope:
                 scope.set_extra("application", "backend")
 
+            # Ignore the logs added by the DockerflowMiddleware
+            ignore_logger("request.summary")
+
 
 class Build(Base):
     """Settings used when the application is built.