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added prometheus instrumentation

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This commit is contained in:
Yuri Grinshteyn 2019-06-17 15:46:11 -07:00
parent 1636786a27
commit 25b80e29a9
2 changed files with 5 additions and 1 deletions
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1
src/frontend/Dockerfile
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@ -9,6 +9,7 @@ WORKDIR /go/src/$PROJECT
# restore dependencies
COPY Gopkg.* ./
RUN dep ensure --vendor-only -v
RUN go get github.com/prometheus/client_golang/prometheus/promhttp
COPY . .
RUN go install .

5
src/frontend/main.go
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@ -23,6 +23,8 @@ import (
"cloud.google.com/go/profiler"
"contrib.go.opencensus.io/exporter/stackdriver"
// "contrib.go.opencensus.io/exporter/jaeger"
"github.com/gorilla/mux"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
@ -133,7 +135,8 @@ func main() {
r.PathPrefix("/static/").Handler(http.StripPrefix("/static/", http.FileServer(http.Dir("./static/"))))
r.HandleFunc("/robots.txt", func(w http.ResponseWriter, _ *http.Request) { fmt.Fprint(w, "User-agent: *\nDisallow: /") })
r.HandleFunc("/_healthz", func(w http.ResponseWriter, _ *http.Request) { fmt.Fprint(w, "ok") })
r.HandleFunc("/metrics", promhttp.Handler())
r.Path("/metrics").Handler(promhttp.Handler())
//r.HandleFunc("/metrics", promhttp.Handler())
var handler http.Handler = r
handler = &logHandler{log: log, next: handler} // add logging