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lib/promutils: hide the math.Round() logic inside ParseTimeMsec() function

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This should prevent from bugs similar to https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5801 in the future

This is a follow-up for ce3ec3ff2e
This commit is contained in:
Aliaksandr Valialkin 2024-02-23 00:54:20 +02:00
parent 5934002b57
commit df7d3c55ed
No known key found for this signature in database
GPG key ID: 52C003EE2BCDB9EB
4 changed files with 16 additions and 13 deletions
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4
app/vmctl/time.go
View file

@ -2,7 +2,6 @@ package main
import (
"fmt"
"math"
"time"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promutils"
@ -15,11 +14,10 @@ const (
)
func parseTime(s string) (time.Time, error) {
secs, err := promutils.ParseTime(s)
msecs, err := promutils.ParseTimeMsec(s)
if err != nil {
return time.Time{}, fmt.Errorf("cannot parse %s: %w", s, err)
}
msecs := int64(math.Round(secs * 1e3))
if msecs < minTimeMsecs {
msecs = 0
}

3
lib/httputils/time.go
View file

@ -28,11 +28,10 @@ func GetTime(r *http.Request, argKey string, defaultMs int64) (int64, error) {
return maxTimeMsecs, nil
}
// Parse argValue
secs, err := promutils.ParseTime(argValue)
msecs, err := promutils.ParseTimeMsec(argValue)
if err != nil {
return 0, fmt.Errorf("cannot parse %s=%s: %w", argKey, argValue, err)
}
msecs := int64(math.Round(secs * 1e3))
if msecs < minTimeMsecs {
msecs = 0
}

14
lib/promutils/time.go
View file

@ -2,19 +2,25 @@ package promutils
import (
"fmt"
"math"
"strconv"
"strings"
"time"
)
// ParseTime parses time s in different formats.
// ParseTimeMsec parses time s in different formats.
//
// See https://docs.victoriametrics.com/Single-server-VictoriaMetrics.html#timestamp-formats
//
// It returns unix timestamp in seconds.
func ParseTime(s string) (float64, error) {
// It returns unix timestamp in milliseconds.
func ParseTimeMsec(s string) (int64, error) {
currentTimestamp := float64(time.Now().UnixNano()) / 1e9
return ParseTimeAt(s, currentTimestamp)
secs, err := ParseTimeAt(s, currentTimestamp)
if err != nil {
return 0, err
}
msecs := int64(math.Round(secs * 1000))
return msecs, nil
}
const (

8
lib/promutils/time_test.go
View file

@ -78,12 +78,12 @@ func TestParseTimeAtSuccess(t *testing.T) {
f("2023-05-20T04:57:43.123456789-02:30", now, 1.6845676631234567e+09)
}
func TestParseTimeFailure(t *testing.T) {
func TestParseTimeMsecFailure(t *testing.T) {
f := func(s string) {
t.Helper()
ts, err := ParseTime(s)
if ts != 0 {
t.Fatalf("unexpected time parsed: %f; want 0", ts)
msec, err := ParseTimeMsec(s)
if msec != 0 {
t.Fatalf("unexpected time parsed: %d; want 0", msec)
}
if err == nil {
t.Fatalf("expecting non-nil error")