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Better rounding for incoming query timestamps (#4941) 

Fixes https://github.com/prometheus/prometheus/issues/4939

Signed-off-by: Julius Volz <julius.volz@gmail.com>
This commit is contained in:
Julius Volz 2018-12-03 20:25:54 +08:00 committed by GitHub
parent d28246e337
commit 11a52be1d8
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2 changed files with 5 additions and 0 deletions
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1
web/api/v1/api.go
View File

@ -1150,6 +1150,7 @@ func (api *API) respondError(w http.ResponseWriter, apiErr *apiError, data inter
func parseTime(s string) (time.Time, error) {
if t, err := strconv.ParseFloat(s, 64); err == nil {
s, ns := math.Modf(t)
ns = math.Round(ns*1000) / 1000
return time.Unix(int64(s), int64(ns*float64(time.Second))), nil
}
if t, err := time.Parse(time.RFC3339Nano, s); err == nil {

4
web/api/v1/api_test.go
View File

@ -1318,6 +1318,10 @@ func TestParseTime(t *testing.T) {
}, {
input: "2015-06-03T14:21:58.555+01:00",
result: ts,
}, {
// Test float rounding.
input: "1543578564.705",
result: time.Unix(1543578564, 705*1e6),
},
}