uptime-kuma/server/prometheus.js
Matthew Nickson 03b2d8d521
Add JSDoc to server/*
Signed-off-by: Matthew Nickson <mnickson@sidingsmedia.com>
2022-04-20 19:56:40 +01:00

102 lines
2.7 KiB
JavaScript

const PrometheusClient = require("prom-client");
const commonLabels = [
"monitor_name",
"monitor_type",
"monitor_url",
"monitor_hostname",
"monitor_port",
];
const monitor_cert_days_remaining = new PrometheusClient.Gauge({
name: "monitor_cert_days_remaining",
help: "The number of days remaining until the certificate expires",
labelNames: commonLabels
});
const monitor_cert_is_valid = new PrometheusClient.Gauge({
name: "monitor_cert_is_valid",
help: "Is the certificate still valid? (1 = Yes, 0= No)",
labelNames: commonLabels
});
const monitor_response_time = new PrometheusClient.Gauge({
name: "monitor_response_time",
help: "Monitor Response Time (ms)",
labelNames: commonLabels
});
const monitor_status = new PrometheusClient.Gauge({
name: "monitor_status",
help: "Monitor Status (1 = UP, 0= DOWN)",
labelNames: commonLabels
});
class Prometheus {
monitorLabelValues = {}
/**
* @param {Object} monitor Monitor object to monitor
*/
constructor(monitor) {
this.monitorLabelValues = {
monitor_name: monitor.name,
monitor_type: monitor.type,
monitor_url: monitor.url,
monitor_hostname: monitor.hostname,
monitor_port: monitor.port
};
}
/**
* Update the metrics page
* @param {Object} heartbeat Heartbeat details
* @param {Object} tlsInfo TLS details
*/
update(heartbeat, tlsInfo) {
if (typeof tlsInfo !== "undefined") {
try {
let is_valid = 0;
if (tlsInfo.valid == true) {
is_valid = 1;
} else {
is_valid = 0;
}
monitor_cert_is_valid.set(this.monitorLabelValues, is_valid);
} catch (e) {
console.error(e);
}
try {
if (tlsInfo.certInfo != null) {
monitor_cert_days_remaining.set(this.monitorLabelValues, tlsInfo.certInfo.daysRemaining);
}
} catch (e) {
console.error(e);
}
}
try {
monitor_status.set(this.monitorLabelValues, heartbeat.status);
} catch (e) {
console.error(e);
}
try {
if (typeof heartbeat.ping === "number") {
monitor_response_time.set(this.monitorLabelValues, heartbeat.ping);
} else {
// Is it good?
monitor_response_time.set(this.monitorLabelValues, -1);
}
} catch (e) {
console.error(e);
}
}
}
module.exports = {
Prometheus
};