Add tier label to all Prometheus metrics #2

New issue

Closed

opened 2026-05-29 12:26:27 +00:00 by ldraney · 0 comments

ldraney commented

2026-05-29 12:26:27 +00:00

Owner

Type

Feature

Lineage

Parent: ldraney/DORA#1

Repo

ldraney/pal-e-dora-exporter

User Story

As a platform operator, I want playground repos excluded from DORA composite scores so that metrics reflect real production health.

Context

The exporter currently treats all Forgejo repositories equally. Adding a tier label at the exporter level enables Grafana filtering, per-app drill-downs, and composite scoring.

File Targets

src/config.py — add DORA_TIERS_FILE env var, YAML tier config loading
src/collectors/forgejo.py — add tier label to PR metrics
src/collectors/woodpecker.py — add tier label to deployment metrics
src/main.py — pass tier config to collectors
tiers.yaml — initial tier mapping file
tests/test_tiers.py — unit tests

Acceptance Criteria

Exporter emits tier="1", tier="2", or tier="3" labels on all metric families
Config uses YAML-based repo-to-tier mapping
Unlabeled repos default to tier 3
Match on repo name part only (strip owner prefix)

Test Expectations

Unit test: config loader parses tier mapping correctly
Unit test: collectors attach correct tier label per repo

Constraints

Keep config format simple; YAML preferred
No breaking changes to existing metric names or labels

Checklist

tiers.yaml created with correct mappings
config.py loads YAML file
forgejo.py adds tier label
woodpecker.py adds tier label
main.py passes tier config
Unit tests pass

ldraney/DORA#1

### Type Feature ### Lineage Parent: ldraney/DORA#1 ### Repo ldraney/pal-e-dora-exporter ### User Story As a platform operator, I want playground repos excluded from DORA composite scores so that metrics reflect real production health. ### Context The exporter currently treats all Forgejo repositories equally. Adding a tier label at the exporter level enables Grafana filtering, per-app drill-downs, and composite scoring. ### File Targets - `src/config.py` — add DORA_TIERS_FILE env var, YAML tier config loading - `src/collectors/forgejo.py` — add tier label to PR metrics - `src/collectors/woodpecker.py` — add tier label to deployment metrics - `src/main.py` — pass tier config to collectors - `tiers.yaml` — initial tier mapping file - `tests/test_tiers.py` — unit tests ### Acceptance Criteria - Exporter emits tier="1", tier="2", or tier="3" labels on all metric families - Config uses YAML-based repo-to-tier mapping - Unlabeled repos default to tier 3 - Match on repo name part only (strip owner prefix) ### Test Expectations - Unit test: config loader parses tier mapping correctly - Unit test: collectors attach correct tier label per repo ### Constraints - Keep config format simple; YAML preferred - No breaking changes to existing metric names or labels ### Checklist - [ ] tiers.yaml created with correct mappings - [ ] config.py loads YAML file - [ ] forgejo.py adds tier label - [ ] woodpecker.py adds tier label - [ ] main.py passes tier config - [ ] Unit tests pass ### Related - ldraney/DORA#1