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windows_exporter
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Add endpoint for getting the version of the binary (#555) 

* Add endpoint for getting the version of the binary

Fixes #553

Signed-off-by: Zlepper <hansen13579@gmail.com>
This commit is contained in:
Rasmus Hansen 2020-06-23 12:48:19 +02:00 committed by GitHub
parent c9f1e5068a
commit f1384759cb
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1 changed files with 27 additions and 0 deletions
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27
exporter.go
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@ -3,6 +3,7 @@
package main
import (
"encoding/json"
"fmt"
"net/http"
_ "net/http/pprof"
@ -28,6 +29,17 @@ type windowsCollector struct {
collectors map[string]collector.Collector
}
// Same struct prometheus uses for their /version endpoint.
// Separate copy to avoid pulling all of prometheus as a dependency
type prometheusVersion struct {
Version string `json:"version"`
Revision string `json:"revision"`
Branch string `json:"branch"`
BuildUser string `json:"buildUser"`
BuildDate string `json:"buildDate"`
GoVersion string `json:"goVersion"`
}
const (
defaultCollectors = "cpu,cs,logical_disk,net,os,service,system,textfile"
defaultCollectorsPlaceholder = "[defaults]"
@ -337,6 +349,21 @@ func main() {
http.HandleFunc(*metricsPath, withConcurrencyLimit(*maxRequests, h.ServeHTTP))
http.HandleFunc("/health", healthCheck)
http.HandleFunc("/version", func(w http.ResponseWriter, r *http.Request) {
// we can't use "version" directly as it is a package, and not an object that
// can be serialized.
err := json.NewEncoder(w).Encode(prometheusVersion{
Version: version.Version,
Revision: version.Revision,
Branch: version.Branch,
BuildUser: version.BuildUser,
BuildDate: version.BuildDate,
GoVersion: version.GoVersion,
})
if err != nil {
http.Error(w, fmt.Sprintf("error encoding JSON: %s", err), http.StatusInternalServerError)
}
})
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
_, _ = w.Write([]byte(`<html>
<head><title>windows_exporter</title></head>