From 5ea380ceafb6bbf3af34fc6e19f51716f7ae3e26 Mon Sep 17 00:00:00 2001 From: Kenn Sippell Date: Thu, 7 Sep 2023 12:41:39 -0700 Subject: [PATCH] feat(#60): add prometheus job to scrape express-metrics (#74) --- development/fake-cht/package-lock.json | 416 ++++++++++++++++++++++++- development/fake-cht/package.json | 4 +- development/fake-cht/src/index.js | 6 + prometheus/config/prometheus.yml | 12 + 4 files changed, 436 insertions(+), 2 deletions(-) diff --git a/development/fake-cht/package-lock.json b/development/fake-cht/package-lock.json index fb7dc95..5bbec06 100644 --- a/development/fake-cht/package-lock.json +++ b/development/fake-cht/package-lock.json @@ -1,13 +1,156 @@ { "name": "fake-cht", + "version": "1.0.0", "lockfileVersion": 2, "requires": true, "packages": { "": { "name": "fake-cht", + "version": "1.0.0", "dependencies": { "express": "^4.18.2", - "pg": "^8.10.0" + "pg": "^8.10.0", + "prometheus-api-metrics": "^3.2.2" + } + }, + "node_modules/@types/accepts": { + 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{ + "ms": "^2.1.1" + } + }, + "ms": { + "version": "2.1.3", + "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz", + "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==" + } + } + }, "proxy-addr": { "version": "2.0.7", "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz", @@ -1214,6 +1619,15 @@ "resolved": "https://registry.npmjs.org/statuses/-/statuses-2.0.1.tgz", "integrity": "sha512-RwNA9Z/7PrK06rYLIzFMlaF+l73iwpzsqRIFgbMLbTcLD6cOao82TaWefPXQvB2fOC4AjuYSEndS7N/mTCbkdQ==" }, + "tdigest": { + "version": "0.1.2", + "resolved": "https://registry.npmjs.org/tdigest/-/tdigest-0.1.2.tgz", + "integrity": "sha512-+G0LLgjjo9BZX2MfdvPfH+MKLCrxlXSYec5DaPYP1fe6Iyhf0/fSmJ0bFiZ1F8BT6cGXl2LpltQptzjXKWEkKA==", + "peer": true, + "requires": { + "bintrees": "1.0.2" + } + }, "toidentifier": { "version": "1.0.1", "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz", diff --git a/development/fake-cht/package.json b/development/fake-cht/package.json index 35ccb5f..7913220 100644 --- a/development/fake-cht/package.json +++ b/development/fake-cht/package.json @@ -1,10 +1,12 @@ { "name": "fake-cht", + "version": "1.0.0", "scripts": { "start": "node src/index.js" }, "dependencies": { "express": "^4.18.2", - "pg": "^8.10.0" + "pg": "^8.10.0", + "prometheus-api-metrics": "^3.2.2" } } diff --git a/development/fake-cht/src/index.js b/development/fake-cht/src/index.js index 37ea76f..0259d66 100644 --- a/development/fake-cht/src/index.js +++ b/development/fake-cht/src/index.js @@ -1,6 +1,7 @@ const express = require('express'); const fs = require('fs'); const initialResponse = require('../initial-response.json'); +const prometheusMiddleware = require('prometheus-api-metrics'); const { updatePostgres } = require('./postgres'); const getRandomInt = (min, max) => Math.floor(Math.random() * (max - min)) + min; @@ -112,6 +113,11 @@ try { console.log('Using initial-response data.'); } +app.use(prometheusMiddleware({ + metricsPath: '/api/v1/express-metrics', + metricsPrefix: 'cht_api', +})); + app.get('/api/v2/monitoring', (req, res) => { const metrics = { version: getVersion(), diff --git a/prometheus/config/prometheus.yml b/prometheus/config/prometheus.yml index 357a321..efe3001 100644 --- a/prometheus/config/prometheus.yml +++ b/prometheus/config/prometheus.yml @@ -9,3 +9,15 @@ scrape_configs: - job_name: grafana static_configs: - targets: ['grafana:3000'] + - job_name: cht-express-metrics + metrics_path: /api/v1/express-metrics + file_sd_configs: + - files: + - '/etc/prometheus/cht-instances.yml' + relabel_configs: + - source_labels: [__address__] + regex: "(?:https?:\\/\\/|)(?:www\\.|)(.*?)(?:\\/|)$" + target_label: instance + replacement: "$1" + - source_labels: [instance] + target_label: __address__ \ No newline at end of file