feat(backend): improve worker tracing (#9808)

* feat(backend): improve worker log

* refactor tracing details

* add tracing to gunicorn setup

* add sqlite tracing

* add system metrics

* instument wsgi

* make dbengine better accessible

* fix instruction

* instrument worker

* track task scheduling

* trace common tasks

* patch in support for django q

* trace various tasks

* add trcing for other dbs

* ignore coverage on tracing stuff

* more ignorance

contrib/container/gunicorn.conf.py

@@ -40,3 +40,18 @@ max_requests_jitter = 50
 
 # preload app so that the ready functions are only executed once
 preload_app = True
+
+
+def post_fork(server, worker):
+    """Post-fork hook to set up logging for each worker."""
+    from django.conf import settings
+
+    if not settings.TRACING_ENABLED:
+        return
+
+    # Instrument gunicorm
+    from InvenTree.tracing import setup_instruments, setup_tracing
+
+    # Run tracing/logging instrumentation
+    setup_tracing(**settings.TRACING_DETAILS)
+    setup_instruments()