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Detects background job processing functions (e.g. Oban worker perform/1)
without telemetry instrumentation. Background jobs should emit metrics
for monitoring, debugging, and alerting on job execution.
The check uses callback_for metadata produced by Metastatic's semantic
enricher to identify actual behaviour callbacks. Only functions whose
callback_for matches one of the configured job_behaviours are flagged.
When fallback_heuristic is true, functions without callback_for
metadata are also checked using name-based job_indicators matching
(the legacy behaviour). This is off by default.
Category: Observability / Priority: normal
Configuration
Accepts the following parameters via .metacredo.exs:
job_behaviours- Behaviour/base-class module names that identify job workers (matched against callback_for metadata on function_def nodes) (default:{:sigil_W, [delimiter: "[", line: 6, column: 23], [{:<<>>, [line: 6, column: 23], ["\n Oban.Worker\n Sidekiq::Worker\n Sidekiq::Job\n ActiveJob::Base\n celery.Task\n dramatiq.Actor\n Broadway\n "]}, []]})telemetry_indicators- Function name fragments that indicate telemetry calls (default:{:sigil_W, [delimiter: "[", line: 15, column: 29], [{:<<>>, [line: 15, column: 29], ["telemetry emit log trace metric record measure monitor"]}, []]})fallback_heuristic- When true, also flag functions matching job_indicators even without callback_for metadata (legacy name-based heuristic) (default:false)job_indicators- Function name fragments for the fallback heuristic (only used when fallback_heuristic is true) (default:{:sigil_W, [delimiter: "[", line: 17, column: 23], [{:<<>>, [line: 17, column: 23], ["perform execute process run worker job task handler"]}, []]})