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add alert template expanding failure metric (#4747)

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Signed-off-by: Mucahit Kurt <mucahitkurt@gmail.com>
This commit is contained in:
Mucahit Kurt 2018-11-06 17:39:06 +03:00 committed by Brian Brazil
parent c2f32c99cf
commit 4a6c329d71
1 changed files with 22 additions and 0 deletions
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22
template/template.go
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@ -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)