51 lines
1,006 B
Go
51 lines
1,006 B
Go
// Package prometheus implements a standalone HTTP server for serving a
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// Prometheus metrics endpoint.
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package prometheus
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import (
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"context"
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"net/http"
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"github.com/chihaya/chihaya/pkg/log"
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"github.com/prometheus/client_golang/prometheus"
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)
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// Server represents a standalone HTTP server for serving a Prometheus metrics
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// endpoint.
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type Server struct {
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srv *http.Server
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}
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// Stop shuts down the server.
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func (s *Server) Stop() <-chan error {
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c := make(chan error)
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go func() {
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if err := s.srv.Shutdown(context.Background()); err != nil {
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c <- err
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} else {
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close(c)
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}
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}()
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return c
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}
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// NewServer creates a new instance of a Prometheus server that asynchronously
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// serves requests.
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func NewServer(addr string) *Server {
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s := &Server{
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srv: &http.Server{
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Addr: addr,
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Handler: prometheus.Handler(),
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},
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}
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go func() {
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if err := s.srv.ListenAndServe(); err != http.ErrServerClosed {
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log.Fatal("failed while serving prometheus", log.Err(err))
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}
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}()
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return s
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}
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