Files
cyclone/backend/tests/test_logging_setup.py
Tyler 47e0f80786 feat(sp18): structured JSON logging + PII scrubber
Cyclone previously emitted stdlib default-formatted log lines that
operators couldn't parse with anything beyond grep. SP18 replaces
that with:

- JsonFormatter: newline-delimited JSON, ISO-8601 ms timestamps,
  structured "extra" dict, exception tracebacks serialized as a
  single string.
- CycloneDevFormatter: tabular format for tail -f in dev.
- PiiScrubber: logging.Filter that redacts NPIs, SSNs, DOBs,
  patient names — both inline in the message ("npi 1881068062")
  and via PHI-keyed extras ({"dob": "1980-04-12"}).
- setup_logging(): idempotent entry point used by the API lifespan
  and CLI main; respects CYCLONE_LOG_LEVEL/FILE/JSON/NO_PII_SCRUB.
- CLI --log-format=json|dev + --log-file=… flags.
- Migrate 9 highest-value log sites in scheduler/backup_scheduler/
  backup_service to use extra={...} (input_filename, claims, parser,
  backup_id, db_fingerprint, etc.).

34 new tests (test_logging_formatter + test_logging_scrubber +
test_logging_setup). All 867 backend tests pass.
2026-06-21 09:59:34 -06:00

128 lines
4.3 KiB
Python

"""SP18 — ``setup_logging`` entry-point tests.
Covers level resolution, handler attachment, env-var overrides, and
the idempotent re-setup behavior used by the FastAPI lifespan and
the CLI's ``main()``.
"""
from __future__ import annotations
import logging
import os
from pathlib import Path
import pytest
from cyclone.logging_config import (
CycloneDevFormatter,
JsonFormatter,
PiiScrubber,
setup_logging,
)
@pytest.fixture(autouse=True)
def _reset_root_logger():
"""Strip our handlers + filters before each test so setup runs clean."""
root = logging.getLogger()
for h in list(root.handlers):
root.removeHandler(h)
for flt in list(root.filters):
if isinstance(flt, PiiScrubber):
root.removeFilter(flt)
yield
for h in list(root.handlers):
root.removeHandler(h)
for flt in list(root.filters):
if isinstance(flt, PiiScrubber):
root.removeFilter(flt)
def test_setup_respects_level_string():
setup_logging(level="DEBUG", json_format=True)
assert logging.getLogger().level == logging.DEBUG
setup_logging(level="WARNING", json_format=True)
assert logging.getLogger().level == logging.WARNING
def test_setup_attaches_rotating_file_handler(tmp_path: Path):
log_file = tmp_path / "cyclone.log"
setup_logging(level="INFO", log_file=str(log_file), json_format=True)
root = logging.getLogger()
assert len(root.handlers) == 1
h = root.handlers[0]
# RotatingFileHandler has ``baseFilename`` attr.
assert hasattr(h, "baseFilename")
assert Path(h.baseFilename).name == "cyclone.log"
def test_setup_defaults_to_json_formatter():
setup_logging(level="INFO")
root = logging.getLogger()
assert isinstance(root.handlers[0].formatter, JsonFormatter)
def test_setup_dev_toggle_uses_dev_formatter():
setup_logging(level="INFO", json_format=False)
root = logging.getLogger()
assert isinstance(root.handlers[0].formatter, CycloneDevFormatter)
def test_setup_idempotent_re_setup_replaces_handlers():
"""Re-calling setup_logging clears the previous handler(s)."""
setup_logging(level="INFO", json_format=True)
setup_logging(level="DEBUG", json_format=False)
root = logging.getLogger()
assert len(root.handlers) == 1
assert isinstance(root.handlers[0].formatter, CycloneDevFormatter)
assert root.level == logging.DEBUG
def test_setup_quietens_noisy_third_party_loggers():
setup_logging(level="DEBUG", json_format=True)
for noisy in ("urllib3", "paramiko", "sqlalchemy.engine"):
assert logging.getLogger(noisy).level >= logging.WARNING
def test_setup_attaches_pii_scrubber_by_default():
setup_logging(level="INFO", json_format=True)
root = logging.getLogger()
assert any(isinstance(f, PiiScrubber) for f in root.filters)
def test_setup_honors_scrub_pii_false():
setup_logging(level="INFO", json_format=True, scrub_pii=False)
root = logging.getLogger()
# Scrubber is still attached but disabled.
scrubbers = [f for f in root.filters if isinstance(f, PiiScrubber)]
assert len(scrubbers) == 1
assert scrubbers[0]._enabled is False # noqa: SLF001
def test_setup_honors_env_var_no_pii_scrub(monkeypatch):
monkeypatch.setenv("CYCLONE_LOG_NO_PII_SCRUB", "1")
setup_logging(level="INFO", json_format=True)
scrubbers = [f for f in logging.getLogger().filters if isinstance(f, PiiScrubber)]
assert scrubbers and scrubbers[0]._enabled is False # noqa: SLF001
def test_setup_emits_json_to_stderr_by_default(caplog):
"""Records emitted after setup flow through JsonFormatter."""
setup_logging(level="INFO", json_format=True)
logger = logging.getLogger("cyclone.test_setup")
logger.info("hello %s", "world", extra={"x": 1})
# Cyclone attaches the handler to root, not the named logger; caplog
# won't capture unless we propagate (which is the default).
# Just assert the handler is on root and would format correctly.
root = logging.getLogger()
h = root.handlers[0]
record = logger.makeRecord(
name="cyclone.test_setup", level=logging.INFO, fn="t.py", lno=1,
msg="hello %s", args=("world",), exc_info=None,
)
record.x = 1
formatted = h.formatter.format(record)
import json as _json
parsed = _json.loads(formatted)
assert parsed["msg"] == "hello world"
assert parsed["extra"]["x"] == 1