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Merge pull request #200 from proffalken/feature/187_add_cert_checks_to_prometheus

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Add certificate monitoring to the Prometheus handler
This commit is contained in:
Louis Lam 2021-08-13 00:26:58 +08:00 committed by GitHub
commit af34e861c5
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2 changed files with 52 additions and 15 deletions
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12
server/model/monitor.js
View File

@ -80,6 +80,10 @@ class Monitor extends BeanModel {
const beat = async () => {
// Expose here for prometheus update
// undefined if not https
let tlsInfo = undefined;
if (! previousBeat) {
previousBeat = await R.findOne("heartbeat", " monitor_id = ? ORDER BY time DESC", [
this.id,
@ -133,7 +137,7 @@ class Monitor extends BeanModel {
let certInfoStartTime = dayjs().valueOf();
if (this.getUrl()?.protocol === "https:") {
try {
await this.updateTlsInfo(checkCertificate(res));
tlsInfo = await this.updateTlsInfo(checkCertificate(res));
} catch (e) {
if (e.message !== "No TLS certificate in response") {
console.error(e.message)
@ -255,7 +259,7 @@ class Monitor extends BeanModel {
console.warn(`Monitor #${this.id} '${this.name}': Failing: ${bean.msg} | Type: ${this.type}`)
}
prometheus.update(bean)
prometheus.update(bean, tlsInfo)
io.to(this.user_id).emit("heartbeat", bean.toJSON());
@ -290,7 +294,7 @@ class Monitor extends BeanModel {
/**
* Store TLS info to database
* @param checkCertificateResult
* @returns {Promise<void>}
* @returns {Promise<object>}
*/
async updateTlsInfo(checkCertificateResult) {
let tls_info_bean = await R.findOne("monitor_tls_info", "monitor_id = ?", [
@ -302,6 +306,8 @@ class Monitor extends BeanModel {
}
tls_info_bean.info_json = JSON.stringify(checkCertificateResult);
await R.store(tls_info_bean);
return checkCertificateResult;
}
static async sendStats(io, monitorID, userID) {

55
server/prometheus.js
View File

@ -1,22 +1,33 @@
const PrometheusClient = require('prom-client');
const PrometheusClient = require("prom-client");
const commonLabels = [
'monitor_name',
'monitor_type',
'monitor_url',
'monitor_hostname',
'monitor_port',
"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)',
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)',
name: "monitor_status",
help: "Monitor Status (1 = UP, 0= DOWN)",
labelNames: commonLabels
});
@ -33,7 +44,27 @@ class Prometheus {
}
}
update(heartbeat) {
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 {
monitor_cert_days_remaining.set(this.monitorLabelValues, tlsInfo.daysRemaining)
} catch (e) {
console.error(e)
}
}
try {
monitor_status.set(this.monitorLabelValues, heartbeat.status)
} catch (e) {
@ -41,7 +72,7 @@ class Prometheus {
}
try {
if (typeof heartbeat.ping === 'number') {
if (typeof heartbeat.ping === "number") {
monitor_response_time.set(this.monitorLabelValues, heartbeat.ping)
} else {
// Is it good?