46 lines
1.2 KiB
Go
46 lines
1.2 KiB
Go
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package httphandler
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"github.com/prometheus/common/version"
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)
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type VersionHandler struct{}
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// Same struct prometheus uses for their /version endpoint.
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// Separate copy to avoid pulling all of prometheus as a dependency.
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type prometheusVersion struct {
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Version string `json:"version"`
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Revision string `json:"revision"`
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Branch string `json:"branch"`
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BuildUser string `json:"buildUser"`
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BuildDate string `json:"buildDate"`
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GoVersion string `json:"goVersion"`
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}
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// Interface guard.
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var _ http.Handler = (*VersionHandler)(nil)
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func NewVersionHandler() VersionHandler {
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return VersionHandler{}
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}
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func (h VersionHandler) ServeHTTP(w http.ResponseWriter, _ *http.Request) {
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// we can't use "version" directly as it is a package, and not an object that
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// can be serialized.
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err := json.NewEncoder(w).Encode(prometheusVersion{
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Version: version.Version,
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Revision: version.Revision,
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Branch: version.Branch,
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BuildUser: version.BuildUser,
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BuildDate: version.BuildDate,
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GoVersion: version.GoVersion,
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})
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if err != nil {
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http.Error(w, fmt.Sprintf("error encoding JSON: %s", err), http.StatusInternalServerError)
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}
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}
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