Setting User-Agent header (prometheus#2447)

rongfengliang · Feb 28, 2017 · 8809735 · 8809735
1 parent 07491c9
commit 8809735
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/retrieval/scrape.go b/retrieval/scrape.go
@@ -24,6 +24,7 @@ import (
 	"github.com/prometheus/common/expfmt"
 	"github.com/prometheus/common/log"
 	"github.com/prometheus/common/model"
+	"github.com/prometheus/common/version"
 	"golang.org/x/net/context"
 	"golang.org/x/net/context/ctxhttp"
 
@@ -286,12 +287,15 @@ type targetScraper struct {
 
 const acceptHeader = `application/vnd.google.protobuf;proto=io.prometheus.client.MetricFamily;encoding=delimited;q=0.7,text/plain;version=0.0.4;q=0.3,*/*;q=0.1`
 
+var userAgentHeader = fmt.Sprintf("Prometheus/%s", version.Version)
+
 func (s *targetScraper) scrape(ctx context.Context, ts time.Time) (model.Samples, error) {
 	req, err := http.NewRequest("GET", s.URL().String(), nil)
 	if err != nil {
 		return nil, err
 	}
 	req.Header.Add("Accept", acceptHeader)
+	req.Header.Set("User-Agent", userAgentHeader)
 
 	resp, err := ctxhttp.Do(ctx, s.client, req)
 	if err != nil {