mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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e2053baf32
* app/vmctl: add support for the different time format in the native binary protocol * app/vmctl: update flag description, update CHANGELOG.md * app/vmctl: add comment to exported function
106 lines
2.3 KiB
Go
106 lines
2.3 KiB
Go
package utils
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import (
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"fmt"
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"strconv"
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"strings"
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"time"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/promutils"
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)
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const (
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// These values prevent from overflow when storing msec-precision time in int64.
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minTimeMsecs = 0 // use 0 instead of `int64(-1<<63) / 1e6` because the storage engine doesn't actually support negative time
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maxTimeMsecs = int64(1<<63-1) / 1e6
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)
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func parseTime(s string) (float64, error) {
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if len(s) > 0 && (s[len(s)-1] != 'Z' && s[len(s)-1] > '9' || s[0] == '-') {
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// Parse duration relative to the current time
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d, err := promutils.ParseDuration(s)
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if err != nil {
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return 0, err
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}
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if d > 0 {
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d = -d
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}
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t := time.Now().Add(d)
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return float64(t.UnixNano()) / 1e9, nil
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}
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if len(s) == 4 {
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// Parse YYYY
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t, err := time.Parse("2006", s)
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if err != nil {
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return 0, err
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}
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return float64(t.UnixNano()) / 1e9, nil
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}
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if !strings.Contains(s, "-") {
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// Parse the timestamp in milliseconds
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return strconv.ParseFloat(s, 64)
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}
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if len(s) == 7 {
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// Parse YYYY-MM
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t, err := time.Parse("2006-01", s)
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if err != nil {
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return 0, err
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}
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return float64(t.UnixNano()) / 1e9, nil
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}
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if len(s) == 10 {
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// Parse YYYY-MM-DD
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t, err := time.Parse("2006-01-02", s)
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if err != nil {
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return 0, err
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}
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return float64(t.UnixNano()) / 1e9, nil
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}
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if len(s) == 13 {
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// Parse YYYY-MM-DDTHH
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t, err := time.Parse("2006-01-02T15", s)
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if err != nil {
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return 0, err
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}
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return float64(t.UnixNano()) / 1e9, nil
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}
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if len(s) == 16 {
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// Parse YYYY-MM-DDTHH:MM
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t, err := time.Parse("2006-01-02T15:04", s)
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if err != nil {
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return 0, err
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}
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return float64(t.UnixNano()) / 1e9, nil
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}
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if len(s) == 19 {
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// Parse YYYY-MM-DDTHH:MM:SS
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t, err := time.Parse("2006-01-02T15:04:05", s)
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if err != nil {
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return 0, err
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}
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return float64(t.UnixNano()) / 1e9, nil
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}
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t, err := time.Parse(time.RFC3339, s)
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if err != nil {
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return 0, err
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}
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return float64(t.UnixNano()) / 1e9, nil
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}
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// GetTime returns time from the given string.
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func GetTime(s string) (time.Time, error) {
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secs, err := parseTime(s)
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if err != nil {
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return time.Time{}, fmt.Errorf("cannot parse %s: %w", s, err)
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}
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msecs := int64(secs * 1e3)
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if msecs < minTimeMsecs {
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msecs = 0
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}
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if msecs > maxTimeMsecs {
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msecs = maxTimeMsecs
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}
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return time.Unix(0, msecs*int64(time.Millisecond)), nil
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}
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