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coredns plugin -- on server reload, metrics disappeared, therefore they must be registered on each reload instead of once

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This commit is contained in:
Eugene Bujak 2018-09-06 02:07:57 +03:00
parent c143e3d57f
commit 876854d403
1 changed files with 16 additions and 18 deletions
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6
coredns_plugin/coredns_plugin.go
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@ -187,10 +187,9 @@ func setup(c *caddy.Controller) error {
})
c.OnStartup(func() error {
onceMetrics.Do(func() {
m := dnsserver.GetConfig(c).Handler("prometheus")
if m == nil {
return
return nil
}
if x, ok := m.(*metrics.Metrics); ok {
x.MustRegister(requests)
@ -203,7 +202,6 @@ func setup(c *caddy.Controller) error {
x.MustRegister(errorsTotal)
x.MustRegister(d)
}
})
return nil
})
c.OnShutdown(d.OnShutdown)
@ -508,4 +506,4 @@ func (d *Plugin) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg)
func (d *Plugin) Name() string { return "dnsfilter" }
var onceMetrics, onceQueryLog sync.Once
var onceQueryLog sync.Once