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tsdb: improved floating point support when converting sql time column to epoch (ms)

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This commit is contained in:
Marcus Efraimsson
2018-04-10 16:36:00 +02:00
parent 9d84e6f31f
commit 97f67ddcb8
2 changed files with 15 additions and 12 deletions
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12
pkg/tsdb/time_range.go
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@@ -92,14 +92,14 @@ func (tr *TimeRange) ParseTo() (time.Time, error) {
// EpochPrecisionToMs converts epoch precision to millisecond, if needed.
// Only seconds to milliseconds supported right now
func EpochPrecisionToMs(value float64) float64 {
if int64(value)/1e10 == 0 {
return float64(value * 1e3)
s := strconv.FormatFloat(value, 'e', -1, 64)
if strings.HasSuffix(s, "e+09") {
return value * float64(1e3)
}
s := strconv.FormatFloat(value, 'f', -1, 64)
if len(s) == 19 {
return float64(value / 1e6)
if strings.HasSuffix(s, "e+18") {
return value / float64(time.Millisecond)
}
return float64(value)
return value
}