tests/fixtures/filters/basic.txt

# Sample filter rules used by integration tests.
# Lines beginning with `#` are comments.
# `include:` — a regex; matching lines are kept.
# `exclude:` — a regex; matching lines are dropped.
# `where:`   — a filter-DSL expression applied after the regexes.

include: (?i)error|warn|fatal
include: status=5\d\d
exclude: (?i)heartbeat
exclude: /healthz
exclude: /readyz

where: status >= 400
where: not route ~ /metrics/