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Add metric successful_config_load #413

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merged 6 commits into from
Feb 4, 2019
+28 −0
Merged

Add metric successful_config_load #413

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72a36fd
Add metric successful_config_load
Jan 31, 2019
5b2aa28
Cleanup after review
Feb 1, 2019
d0958a3
Add timestamp of last successful config reload
Feb 1, 2019
f5438c6
fix minor race condition
Feb 1, 2019
04cd21e
Reverting an errant commit
Feb 1, 2019
f9923c4
Use SetToCurrentTime
Feb 4, 2019
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15 changes: 15 additions & 0 deletions config/config.go
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Original file line number Diff line number Diff line change
Expand Up @@ -10,9 +10,12 @@ import (

yaml "gopkg.in/yaml.v2"

"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/config"
)

var configReloadSuccess prometheus.Gauge

type Config struct {
Modules map[string]Module `yaml:"modules"`
}
Expand All @@ -22,22 +25,34 @@ type SafeConfig struct {
C *Config
}

func init() {
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configReloadSuccess = prometheus.NewGauge(prometheus.GaugeOpts{
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Name: "successful_config_load",
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Help: "Blackbox exporter config loaded successfully",
})
prometheus.MustRegister(configReloadSuccess)
}

func (sc *SafeConfig) ReloadConfig(confFile string) (err error) {
var c = &Config{}

yamlFile, err := ioutil.ReadFile(confFile)
if err != nil {
configReloadSuccess.Set(0)
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return fmt.Errorf("error reading config file: %s", err)
}

if err := yaml.UnmarshalStrict(yamlFile, c); err != nil {
configReloadSuccess.Set(0)
return fmt.Errorf("error parsing config file: %s", err)
}

sc.Lock()
sc.C = c
sc.Unlock()

configReloadSuccess.Set(1)

return nil
}

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