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add metrics handler #39

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merged 2 commits into from
Apr 1, 2025
Merged

add metrics handler #39

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29076ad
add /metrics endpoint
maxbischoff Mar 19, 2025
22171c6
improve logging
maxbischoff Mar 19, 2025
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21 changes: 14 additions & 7 deletions cmd/webhook/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -8,10 +8,17 @@ import (

"external-dns-openstack-webhook/internal/designate/provider"

"github.com/prometheus/client_golang/prometheus/promhttp"

"sigs.k8s.io/external-dns/endpoint"
"sigs.k8s.io/external-dns/provider/webhook/api"
)

const (
webhookServerAddr = "127.0.0.1:8888"
statusServerAddr = "0.0.0.0:8080"
)

func main() {
log.SetLevel(log.DebugLevel)

Expand All @@ -29,31 +36,31 @@ func main() {
w.WriteHeader(http.StatusInternalServerError)
}
})
m.HandleFunc("/metrics", promhttp.Handler().ServeHTTP)

go func() {
log.Debug("Starting status server on :8080")
log.Debugf("Starting status server on %s", statusServerAddr)
s := &http.Server{
Addr: "0.0.0.0:8080",
Addr: statusServerAddr,
Handler: m,
}

l, err := net.Listen("tcp", "0.0.0.0:8080")
l, err := net.Listen("tcp", statusServerAddr)
if err != nil {
log.Fatal(err)
}
err = s.Serve(l)
if err != nil {
log.Fatalf("health listener stopped : %s", err)
log.Fatalf("status listener stopped : %s", err)
}
}()


epf := endpoint.NewDomainFilter([]string{})
dp, err := provider.NewDesignateProvider(epf, false)
if err != nil {
log.Fatalf("NewDesignateProvider: %v", err)
}

log.Printf("Starting server")
api.StartHTTPApi(dp, startedChan, 0, 0, "127.0.0.1:8888")
log.Debugf("Starting webhook server on %s", webhookServerAddr)
api.StartHTTPApi(dp, startedChan, 0, 0, webhookServerAddr)
}
7 changes: 5 additions & 2 deletions go.mod
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,10 @@ require (
sigs.k8s.io/external-dns v0.15.1
)

require github.com/gophercloud/gophercloud/v2 v2.6.0
require (
github.com/gophercloud/gophercloud/v2 v2.6.0
github.com/prometheus/client_golang v1.20.5
)

require (
github.com/aws/aws-sdk-go-v2/service/route53 v1.46.3 // indirect
Expand All @@ -20,11 +23,11 @@ require (
github.com/google/go-cmp v0.6.0 // indirect
github.com/google/gofuzz v1.2.0 // indirect
github.com/json-iterator/go v1.1.12 // indirect
github.com/klauspost/compress v1.17.9 // indirect
github.com/kr/text v0.2.0 // indirect
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
github.com/modern-go/reflect2 v1.0.2 // indirect
github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
github.com/prometheus/client_golang v1.20.5 // indirect
github.com/prometheus/client_model v0.6.1 // indirect
github.com/prometheus/common v0.55.0 // indirect
github.com/prometheus/procfs v0.15.1 // indirect
Expand Down
2 changes: 2 additions & 0 deletions go.sum
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,8 @@ github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
Expand Down