Report the process ID as a Sentry tag when using task auth

arkindex/ponos/authentication.py

@@ -8,6 +8,7 @@ from arkindex.ponos.models import Agent, Task
 from rest_framework_simplejwt.authentication import JWTAuthentication
 from rest_framework_simplejwt.exceptions import InvalidToken
 from rest_framework_simplejwt.settings import api_settings
+from sentry_sdk import set_tag
 
 
 class AgentUser(Agent):
@@ -91,6 +92,10 @@ class TaskAuthentication(TokenAuthentication):
         except ObjectDoesNotExist:
             raise AuthenticationFailed('Task has no process.')
 
+        # Add the process ID to Sentry tags, to speed up troubleshooting
+        # by identifying if and which process is affected by the error.
+        set_tag("process.id", str(process.id))
+
         if not process.creator_id or not process.creator.is_active:
             # Same error message as the standard TokenAuthentication
             raise AuthenticationFailed('User inactive or deleted.')