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32
main.go
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@ -28,7 +28,7 @@ type CertificateMetrics struct {
IsValid prometheus.Gauge
}
func NewCertificateMetrics(domain string, port int, alpn []string) CertificateMetrics {
func NewCertificateMetrics(domain string, port int, alpn []string, name string) CertificateMetrics {
metrics := CertificateMetrics{
Domain: domain,
Port: port,
@ -36,13 +36,13 @@ func NewCertificateMetrics(domain string, port int, alpn []string) CertificateMe
ExpiryIn: prometheus.NewGauge(
prometheus.GaugeOpts{
Name: "cert_status_expiry_in",
ConstLabels: prometheus.Labels{"domain": domain},
ConstLabels: prometheus.Labels{"name": name},
},
),
IsValid: prometheus.NewGauge(
prometheus.GaugeOpts{
Name: "cert_status_is_valid",
ConstLabels: prometheus.Labels{"domain": domain},
ConstLabels: prometheus.Labels{"name": name},
},
),
}
@ -88,8 +88,9 @@ func (c *CertificateMetrics) checkTls() {
}
}
func updateMetrics(metrics *[]CertificateMetrics) {
func updateMetrics(metrics *[]CertificateMetrics, lastUpdated prometheus.Gauge) {
log.Debugf("Updating metrics for %d domains...", len(*metrics))
lastUpdated.SetToCurrentTime()
for _, metric := range *metrics {
metric.checkTls()
}
@ -108,15 +109,29 @@ func run(ctx *cli.Context) error {
// Setup metrics
registry := prometheus.NewRegistry()
lastUpdatedMetric := prometheus.NewGauge(
prometheus.GaugeOpts{
Name: "certs_status_last_updated",
},
)
registry.MustRegister(lastUpdatedMetric)
metrics := make([]CertificateMetrics, 0)
for _, d := range domains {
log.Debugf("Parsing '%s'...", d)
parts := strings.Split(d, ":")
if len(parts) != 3 {
if len(parts) < 3 {
log.Errorf("Invalid domain format for '%s'", d)
return errors.New("Invalid domain format: Expects <domain>:<port>:<alpn>")
}
name := ""
if len(parts) == 4 {
name = parts[3]
} else {
name = parts[0]
}
port, err := strconv.Atoi(parts[1])
if err != nil {
log.Errorf("Failed to parse port of '%s'", d)
@ -126,11 +141,12 @@ func run(ctx *cli.Context) error {
// Create the metric, and register it
// TODO: Make this prettier
alpn := strings.Split(parts[2], ";")
log.Debugf("Using ALPNs: %v", alpn)
log.Debugf("Registering: domain='%s' port='%d' alpn=%v name='%s'", parts[0], port, alpn, name)
metric := NewCertificateMetrics(
parts[0],
port,
alpn,
name,
)
metric.register(registry)
metrics = append(metrics, metric)
@ -147,7 +163,7 @@ func run(ctx *cli.Context) error {
gocron.DurationJob(24*time.Hour),
gocron.NewTask(
func() {
updateMetrics(&metrics)
updateMetrics(&metrics, lastUpdatedMetric)
},
),
)
@ -158,7 +174,7 @@ func run(ctx *cli.Context) error {
// Perform an initial run to populate the metrics
log.Info("Performing initial requests...")
updateMetrics(&metrics)
updateMetrics(&metrics, lastUpdatedMetric)
log.Debug("Done")
http.Handle(