alexferl / zerohttp / 22835555014

94%

Build Type

push

github

Committed by web-flow

Commit Message

feat: add built-in Prometheus-compatible metrics middleware (#41)

* feat: add built-in Prometheus-compatible metrics middleware

Zero-dependency metrics collection with Counter, Gauge, and Histogram
types. Auto-collects HTTP request metrics with customizable labels.
Exposes Prometheus format at /metrics endpoint.

Signed-off-by: alexferl <me@alexferl.com>

* fix(router): use sync.Once for thread-safe finalization

fix(metrics): record panics as 500 and expose registry to context

test: add panic metrics recording tests

feat(examples): add panic endpoint to metrics example

Signed-off-by: alexferl <me@alexferl.com>

* feat(metrics): add middleware metrics for compress, cors, etag, request_body_size
  - Compress: compress_requests_total counter with encoding label
  - CORS: cors_preflight_requests_total and cors_requests_total counters
  - ETag: etag_requests_total (hit/miss) and etag_generated_total counters
  - RequestBodySize: request_body_size_rejected_total counter

Includes tests and updated METRICS.md documentation.

Signed-off-by: alexferl <me@alexferl.com>

* run pre-commit

Signed-off-by: alexferl <me@alexferl.com>

* add coverage to merge functions

Signed-off-by: alexferl <me@alexferl.com>

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Signed-off-by: alexferl <me@alexferl.com>

Coverage Stats

797 of 883 new or added lines in 19 files covered. (90.26%)

6 existing lines in 2 files now uncovered.

7461 of 8002 relevant lines covered (93.24%)

29.49 hits per line