uptime-kuma/server/prometheus.js

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2021-07-27 16:52:31 +00:00
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
});
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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 = {}
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(heartbeat) {
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
}