VictoriaMetrics/lib/httputils/duration.go

38 lines
1 KiB
Go
Raw Normal View History

package httputils
import (
"fmt"
"net/http"
"strconv"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promutils"
)
// GetDuration returns duration in milliseconds from the given argKey query arg.
func GetDuration(r *http.Request, argKey string, defaultValue int64) (int64, error) {
argValue := r.FormValue(argKey)
if len(argValue) == 0 {
return defaultValue, nil
}
if argValue == "undefined" {
// This hack is needed for Grafana, which may send undefined value
return defaultValue, nil
}
secs, err := strconv.ParseFloat(argValue, 64)
if err != nil {
// Try parsing string format
d, err := promutils.ParseDuration(argValue)
if err != nil {
return 0, fmt.Errorf("cannot parse %q=%q: %w", argKey, argValue, err)
}
secs = d.Seconds()
}
msecs := int64(secs * 1e3)
if msecs <= 0 || msecs > maxDurationMsecs {
return 0, fmt.Errorf("%q=%dms is out of allowed range [%d ... %d]", argKey, msecs, 0, int64(maxDurationMsecs))
}
return msecs, nil
}
const maxDurationMsecs = 100 * 365 * 24 * 3600 * 1000