CD/CD consolidation

devops/tools/observability/slo-evaluator.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# DEVOPS-OBS-51-001: simple SLO burn-rate evaluator
+
+PROM_URL=${PROM_URL:-"http://localhost:9090"}
+OUT="out/obs-slo"
+mkdir -p "$OUT"
+
+query() {
+  local q="$1"
+  curl -sG "${PROM_URL}/api/v1/query" --data-urlencode "query=${q}"
+}
+
+echo "[slo] querying error rate (5m)"
+query "(rate(service_request_errors_total[5m]) / rate(service_requests_total[5m]))" > "${OUT}/error-rate-5m.json"
+
+echo "[slo] querying error rate (1h)"
+query "(rate(service_request_errors_total[1h]) / rate(service_requests_total[1h]))" > "${OUT}/error-rate-1h.json"
+
+echo "[slo] done; results in ${OUT}"