add alert template expanding failure metric
@@ -30,10 +30,27 @@ import (
"github.com/prometheus/common/model"
+ "github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/prometheus/promql"
"github.com/prometheus/prometheus/util/strutil"
)
+var (
+ templateTextExpansionFailures = prometheus.NewCounter(prometheus.CounterOpts{
+ Name: "prometheus_template_text_expansion_failures_total",
+ Help: "The total number of template text expansion failures.",
+ })
+ templateTextExpansionTotal = prometheus.NewCounter(prometheus.CounterOpts{
+ Name: "prometheus_template_text_expansions_total",
+ Help: "The total number of template text expansions.",
+ })
+)
+
+func init() {
+ prometheus.MustRegister(templateTextExpansionFailures)
+ prometheus.MustRegister(templateTextExpansionTotal)
+}
+
// A version of vector that's easier to use from templates.
type sample struct {
Labels map[string]string
@@ -274,8 +291,13 @@ func (te Expander) Expand() (result string, resultErr error) {
resultErr = fmt.Errorf("panic expanding template %v: %v", te.name, r)
}
}
+ if resultErr != nil {
+ templateTextExpansionFailures.Inc()
+ }
}()
+ templateTextExpansionTotal.Inc()
+
tmpl, err := text_template.New(te.name).Funcs(te.funcMap).Option("missingkey=zero").Parse(te.text)
if err != nil {
return "", fmt.Errorf("error parsing template %v: %v", te.name, err)
