Merge branch 'feature/add_prometheus_metrics'

pull/120/head
LouisLam 3 years ago
commit cc6f1d7487

178
package-lock.json generated

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@ -89,11 +130,94 @@
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@ -37,6 +37,8 @@
"jsonwebtoken": "^8.5.1",
"nodemailer": "^6.6.3",
"password-hash": "^1.2.2",
"prom-client": "^13.1.0",
"prometheus-api-metrics": "^3.2.0",
"redbean-node": "0.0.20",
"socket.io": "^4.1.3",
"socket.io-client": "^4.1.3",

@ -1,4 +1,4 @@
const Prometheus = require('prom-client');
const https = require('https');
const dayjs = require("dayjs");
const utc = require('dayjs/plugin/utc')
@ -18,6 +18,26 @@ const customAgent = new https.Agent({
maxCachedSessions: 0
});
const commonLabels = [
'monitor_name',
'monitor_type',
'monitor_url',
'monitor_hostname',
'monitor_port',
]
const monitor_response_time = new Prometheus.Gauge({
name: 'monitor_response_time',
help: 'Monitor Response Time (ms)',
labelNames: commonLabels
});
const monitor_status = new Prometheus.Gauge({
name: 'monitor_status',
help: 'Monitor Status (1 = UP, 0= DOWN)',
labelNames: commonLabels
});
/**
* status:
* 0 = DOWN
@ -56,6 +76,14 @@ class Monitor extends BeanModel {
let previousBeat = null;
let retries = 0;
const monitorLabelValues = {
monitor_name: this.name,
monitor_type: this.type,
monitor_url: this.url,
monitor_hostname: this.hostname,
monitor_port: this.port
}
const beat = async () => {
if (! previousBeat) {
@ -191,6 +219,8 @@ class Monitor extends BeanModel {
bean.important = false;
}
monitor_status.set(monitorLabelValues, bean.status)
if (bean.status === UP) {
console.info(`Monitor #${this.id} '${this.name}': Successful Response: ${bean.ping} ms | Interval: ${this.interval} seconds | Type: ${this.type}`)
} else if (bean.status === PENDING) {
@ -199,6 +229,8 @@ class Monitor extends BeanModel {
console.warn(`Monitor #${this.id} '${this.name}': Failing: ${bean.msg} | Type: ${this.type}`)
}
monitor_response_time.set(monitorLabelValues, bean.ping)
io.to(this.user_id).emit("heartbeat", bean.toJSON());
await R.store(bean)

@ -15,7 +15,7 @@ const gracefulShutdown = require('http-graceful-shutdown');
const Database = require("./database");
const {sleep} = require("./util");
const args = require('args-parser')(process.argv);
const apiMetrics = require('prometheus-api-metrics');
const version = require('../package.json').version;
const hostname = args.host || "0.0.0.0"
const port = args.port || 3001
@ -57,6 +57,8 @@ let needSetup = false;
console.log("Adding route")
app.use('/', express.static("dist"));
app.use(apiMetrics())
app.get('*', function(request, response, next) {
response.sendFile(process.cwd() + '/dist/index.html');

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