20 lines
779 B
Python
20 lines
779 B
Python
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"""Pure helpers for shaping cookbook task output for the status response.
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Kept dependency-free (no FastAPI / SQLAlchemy imports) so the behavior can be
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unit-tested without standing up the whole app.
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"""
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def error_aware_output_tail(full_snapshot: str, status: str) -> str:
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"""Return the trailing slice of a task log for the status response.
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Failed tasks return the last 50 lines so the "Copy last 50 lines" action
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surfaces the actual error context (stack traces, build output). Running and
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other non-error tasks keep the cheaper 12-line tail to limit the payload on
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the 10s polling interval.
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"""
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if not full_snapshot:
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return ""
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tail_lines = 50 if status == "error" else 12
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return "\n".join(full_snapshot.splitlines()[-tail_lines:])
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