Added support for DST with configurable behavior.
This commit is contained in:
Augusto Becciu
parent
f0984319b4
commit
0dc543e5ad
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@ -69,6 +69,7 @@ Other details
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* If only five fields are present, a `0` second field is prepended and a wildcard year field is appended, that is, `* * * * Mon` internally become `0 * * * * Mon *`.
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* Domain for day-of-week field is [0-7] instead of [0-6], 7 being Sunday (like 0). This to comply with http://linux.die.net/man/5/crontab#.
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* As of now, the behavior of the code is undetermined if a malformed cron expression is supplied
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* By default, on a DST change, it returns the times that would have been skipped when the clock moves forward and returns only once the times that would have been repeated when the clock moves backwards. For customized behavior, see the godoc documentation.
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Install
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-------
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@ -131,4 +132,3 @@ License: pick the one which suits you best:
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- GPL v3 see <https://www.gnu.org/licenses/gpl.html>
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- APL v2 see <http://www.apache.org/licenses/LICENSE-2.0>
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35
cronexpr.go
35
cronexpr.go
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@ -27,6 +27,7 @@ import (
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// <https://github.com/gorhill/cronexpr#implementation>
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type Expression struct {
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expression string
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options Options
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secondList []int
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minuteList []int
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hourList []int
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@ -42,6 +43,30 @@ type Expression struct {
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lastWeekDaysOfWeek map[int]bool
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daysOfWeekRestricted bool
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yearList []int
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// indicates an instance of a expression used internally
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// for rounding a time
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rounding bool
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}
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type DSTFlags uint
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const (
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// DSTLeapUnskip indicates the parser to not skip times that would have been
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// been skipped when the clock moves forward on a DST change.
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DSTLeapUnskip = 1 << iota
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// DSTFallFireEarly indicates the parser to return the earliest time
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// when a time is repeated due to a DST fall.
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DSTFallFireEarly
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// DSTFallFireLate indicates the parser to return the latest time
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// when a time is repeated due to a DST fall.
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DSTFallFireLate
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)
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type Options struct {
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DSTFlags DSTFlags
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}
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/******************************************************************************/
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@ -67,6 +92,14 @@ func MustParse(cronLine string) *Expression {
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// about what is a well-formed cron expression from this library's point of
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// view.
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func Parse(cronLine string) (*Expression, error) {
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return ParseWithOptions(cronLine, Options{DSTFlags: DSTLeapUnskip | DSTFallFireEarly})
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}
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// ParseWithOptions is used to build a Expression pointer with custom options.
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func ParseWithOptions(cronLine string, options Options) (*Expression, error) {
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if options.DSTFlags == 0 {
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return nil, fmt.Errorf("missing DST flags")
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}
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// Maybe one of the built-in aliases is being used
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cron := cronNormalizer.Replace(cronLine)
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@ -81,7 +114,7 @@ func Parse(cronLine string) (*Expression, error) {
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fieldCount = 7
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}
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var expr = Expression{}
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var expr = Expression{options: options}
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var field = 0
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var err error
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214
cronexpr_next.go
214
cronexpr_next.go
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@ -53,7 +53,8 @@ func (expr *Expression) nextYear(t time.Time) time.Time {
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0,
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t.Location()))
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}
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return time.Date(
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next := time.Date(
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expr.yearList[i],
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time.Month(expr.monthList[0]),
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expr.actualDaysOfMonthList[0],
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@ -61,7 +62,9 @@ func (expr *Expression) nextYear(t time.Time) time.Time {
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expr.minuteList[0],
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expr.secondList[0],
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0,
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t.Location())
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time.UTC)
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return expr.nextTime(t, next)
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}
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/******************************************************************************/
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@ -87,7 +90,7 @@ func (expr *Expression) nextMonth(t time.Time) time.Time {
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t.Location()))
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}
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return time.Date(
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next := time.Date(
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t.Year(),
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time.Month(expr.monthList[i]),
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expr.actualDaysOfMonthList[0],
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@ -95,7 +98,9 @@ func (expr *Expression) nextMonth(t time.Time) time.Time {
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expr.minuteList[0],
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expr.secondList[0],
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0,
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t.Location())
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time.UTC)
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return expr.nextTime(t, next)
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}
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/******************************************************************************/
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@ -108,7 +113,7 @@ func (expr *Expression) nextDayOfMonth(t time.Time) time.Time {
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return expr.nextMonth(t)
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}
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return time.Date(
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next := time.Date(
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t.Year(),
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t.Month(),
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expr.actualDaysOfMonthList[i],
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@ -116,7 +121,9 @@ func (expr *Expression) nextDayOfMonth(t time.Time) time.Time {
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expr.minuteList[0],
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expr.secondList[0],
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0,
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t.Location())
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time.UTC)
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return expr.nextTime(t, next)
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}
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/******************************************************************************/
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@ -129,7 +136,7 @@ func (expr *Expression) nextHour(t time.Time) time.Time {
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return expr.nextDayOfMonth(t)
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}
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return time.Date(
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next := time.Date(
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t.Year(),
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t.Month(),
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t.Day(),
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@ -137,7 +144,9 @@ func (expr *Expression) nextHour(t time.Time) time.Time {
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expr.minuteList[0],
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expr.secondList[0],
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0,
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t.Location())
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time.UTC)
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return expr.nextTime(t, next)
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}
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/******************************************************************************/
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@ -150,7 +159,7 @@ func (expr *Expression) nextMinute(t time.Time) time.Time {
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return expr.nextHour(t)
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}
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return time.Date(
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next := time.Date(
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t.Year(),
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t.Month(),
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t.Day(),
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@ -158,7 +167,9 @@ func (expr *Expression) nextMinute(t time.Time) time.Time {
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expr.minuteList[i],
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expr.secondList[0],
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0,
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t.Location())
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time.UTC)
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return expr.nextTime(t, next)
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}
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/******************************************************************************/
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@ -174,7 +185,7 @@ func (expr *Expression) nextSecond(t time.Time) time.Time {
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return expr.nextMinute(t)
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}
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return time.Date(
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next := time.Date(
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t.Year(),
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t.Month(),
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t.Day(),
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@ -182,7 +193,106 @@ func (expr *Expression) nextSecond(t time.Time) time.Time {
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t.Minute(),
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expr.secondList[i],
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0,
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t.Location())
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time.UTC)
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return expr.nextTime(t, next)
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}
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func (expr *Expression) roundTime(t time.Time) time.Time {
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roundingExpr := new(Expression)
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*roundingExpr = *expr
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roundingExpr.rounding = true
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i := sort.SearchInts(expr.hourList, t.Hour())
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if i == len(expr.hourList) || expr.hourList[i] != t.Hour() {
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return roundingExpr.nextHour(t)
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}
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i = sort.SearchInts(expr.minuteList, t.Minute())
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if i == len(expr.minuteList) || expr.minuteList[i] != t.Minute() {
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return roundingExpr.nextMinute(t)
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}
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i = sort.SearchInts(expr.secondList, t.Second())
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if i == len(expr.secondList) || expr.secondList[i] != t.Second() {
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return roundingExpr.nextSecond(t)
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}
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return t
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}
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func (expr *Expression) isRounded(t time.Time) bool {
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i := sort.SearchInts(expr.hourList, t.Hour())
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if i == len(expr.hourList) || expr.hourList[i] != t.Hour() {
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return false
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}
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i = sort.SearchInts(expr.minuteList, t.Minute())
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if i == len(expr.minuteList) || expr.minuteList[i] != t.Minute() {
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return false
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}
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i = sort.SearchInts(expr.secondList, t.Second())
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if i == len(expr.secondList) || expr.secondList[i] != t.Second() {
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return false
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}
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return true
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}
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func (expr *Expression) nextTime(prev, next time.Time) time.Time {
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dstFlags := expr.options.DSTFlags
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t := prev.Add(noTZDiff(prev, next))
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offsetDiff := utcOffset(t) - utcOffset(prev)
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// a dst leap occurred
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if offsetDiff > 0 {
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if dstFlags&DSTLeapUnskip != 0 {
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return findTimeOfDSTChange(prev, t).Add(1 * time.Second)
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}
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return expr.roundTime(t)
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}
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// a dst fall occurred
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if offsetDiff < 0 {
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twinT := findTwinTime(prev)
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if !twinT.IsZero() {
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if dstFlags&DSTFallFireLate != 0 {
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return twinT
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}
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if dstFlags&DSTFallFireEarly != 0 {
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// skip the twin time
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return expr.Next(expr.roundTime(twinT))
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}
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}
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if dstFlags&DSTFallFireEarly != 0 {
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return t
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}
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return expr.roundTime(t)
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}
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twinT := findTwinTime(t)
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if !twinT.IsZero() {
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if dstFlags&DSTFallFireEarly != 0 {
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return t
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}
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if dstFlags&DSTFallFireLate != 0 {
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return twinT
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}
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}
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if dstFlags&DSTFallFireLate == 0 && !expr.rounding {
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twinT = findTwinTime(prev)
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if !twinT.IsZero() && twinT.Before(prev) && !expr.isRounded(prev) {
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return expr.Next(t)
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}
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}
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return t
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}
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/******************************************************************************/
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@ -290,3 +400,83 @@ func workdayOfMonth(targetDom, lastDom time.Time) int {
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}
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return dom
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}
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func utcOffset(t time.Time) int {
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_, offset := t.Zone()
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return offset
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}
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func noTZ(t time.Time) time.Time {
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return t.UTC().Add(time.Duration(utcOffset(t)) * time.Second)
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}
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func noTZDiff(t1, t2 time.Time) time.Duration {
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t1 = noTZ(t1)
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t2 = noTZ(t2)
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return t2.Sub(t1)
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}
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// findTimeOfDSTChange returns the time a second before a DST change occurs,
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// and returns zero time in case there's no DST change.
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func findTimeOfDSTChange(t1, t2 time.Time) time.Time {
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if t1.Location() != t2.Location() || utcOffset(t1) == utcOffset(t2) || t1.Location() == time.UTC {
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return time.Time{}
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}
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// make sure t2 > t1
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if t2.Before(t1) {
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t := t2
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t1 = t2
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t2 = t
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}
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// do a binary search to find the time one second before the dst change
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len := t2.Unix() - t1.Unix()
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var a int64
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b := len
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for len > 1 {
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len = (b - a + 1) / 2
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if utcOffset(t1.Add(time.Duration(a+len)*time.Second)) != utcOffset(t1) {
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b = a + len
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} else {
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a = a + len
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}
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}
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return t1.Add(time.Duration(a) * time.Second)
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}
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// When a DST fall accurs, a certain interval of time is repeated. Once
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// in DST time and once in standard time.
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// findTwinTime tries to find the repated "twin" time if one exists.
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func findTwinTime(t time.Time) time.Time {
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offsetDiff := utcOffset(t.Add(12*time.Hour)) - utcOffset(t)
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// a fall occurs within the next 12 hours
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if offsetDiff < 0 {
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border := findTimeOfDSTChange(t, t.Add(12*time.Hour))
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t0 := border.Add(time.Duration(offsetDiff) * time.Second)
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if t0.After(t) {
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return t
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}
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dur := t.Sub(t0)
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return border.Add(dur)
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}
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offsetDiff = utcOffset(t) - utcOffset(t.Add(-12*time.Second))
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// a fall occurred in the past 12 hours
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if offsetDiff < 0 {
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border := findTimeOfDSTChange(t.Add(-12*time.Hour), t)
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t0 := border.Add(time.Duration(offsetDiff) * time.Second)
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if t0.Add(time.Duration(-2*offsetDiff) * time.Second).Before(t) {
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return t
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}
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dur := t.Sub(border)
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return t0.Add(dur)
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}
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return time.Time{}
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}
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490
cronexpr_test.go
490
cronexpr_test.go
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@ -15,6 +15,7 @@ package cronexpr_test
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/******************************************************************************/
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import (
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"fmt"
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"testing"
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"time"
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@ -284,6 +285,495 @@ func TestNextN_every5min(t *testing.T) {
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}
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}
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func TestDST(t *testing.T) {
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var locs [3]*time.Location
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// 1 hour DST, negative UTC offset
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// time.Date(2014, 3, 9, 2, 0, 0, 0, locs[0]) Leap PST -> PDT
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// time.Date(2014, 11, 2, 1, 59, 59, 0, locs[0]) Fall PDT -> PST
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locs[0], _ = time.LoadLocation("America/Los_Angeles")
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// biggest tz leap ever (3 hours), occurred from YAKT to MAGST
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// at time.Date(1981, 4, 1, 3, 0, 0, 0, locs[1]),
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locs[1], _ = time.LoadLocation("Asia/Ust-Nera")
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// 30 mins DST, positive UTC offset
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// time.Date(2014, 10, 5, 2, 30, 0, 0, locs[2]) Leap LHST -> LHDT
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// time.Date(2015, 4, 5, 1, 30, 0, 0, locs[2]) Fall LHDT -> LHST
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locs[2], _ = time.LoadLocation("Australia/LHI")
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cases := []struct {
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name string
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expr string
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opts cronexpr.Options
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from time.Time
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expected []time.Time
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}{
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{
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fmt.Sprintf("%s daily leap skip", locs[0]),
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"0 0 2 * * * *",
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cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
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time.Date(2014, 3, 9, 1, 0, 0, 0, locs[0]),
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[]time.Time{
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time.Date(2014, 3, 10, 2, 0, 0, 0, locs[0]),
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time.Date(2014, 3, 11, 2, 0, 0, 0, locs[0]),
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time.Date(2014, 3, 12, 2, 0, 0, 0, locs[0]),
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time.Date(2014, 3, 13, 2, 0, 0, 0, locs[0]),
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},
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},
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{
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fmt.Sprintf("%s daily leap unskip", locs[0]),
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"0 0 2 * * * *",
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cronexpr.Options{DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireEarly},
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time.Date(2014, 3, 9, 1, 0, 0, 0, locs[0]),
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[]time.Time{
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time.Date(2014, 3, 9, 3, 0, 0, 0, locs[0]),
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time.Date(2014, 3, 10, 2, 0, 0, 0, locs[0]),
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time.Date(2014, 3, 11, 2, 0, 0, 0, locs[0]),
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time.Date(2014, 3, 12, 2, 0, 0, 0, locs[0]),
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},
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},
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{
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fmt.Sprintf("%s hourly leap skip", locs[0]),
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"0 0 * * * * *",
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cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
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time.Date(2014, 3, 9, 1, 0, 0, 0, locs[0]),
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[]time.Time{
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time.Date(2014, 3, 9, 3, 0, 0, 0, locs[0]),
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time.Date(2014, 3, 9, 4, 0, 0, 0, locs[0]),
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time.Date(2014, 3, 9, 5, 0, 0, 0, locs[0]),
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time.Date(2014, 3, 9, 6, 0, 0, 0, locs[0]),
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},
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},
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{
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fmt.Sprintf("%s hourly leap unskip", locs[0]),
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"0 0 * * * * *",
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cronexpr.Options{DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireEarly},
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time.Date(2014, 3, 9, 1, 0, 0, 0, locs[0]),
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[]time.Time{
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time.Date(2014, 3, 9, 3, 0, 0, 0, locs[0]),
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time.Date(2014, 3, 9, 4, 0, 0, 0, locs[0]),
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time.Date(2014, 3, 9, 5, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 3, 9, 6, 0, 0, 0, locs[0]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily quarter-hourly leap skip", locs[0]),
|
||||
"0 */15 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(2014, 3, 9, 1, 0, 0, 0, locs[0]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 3, 10, 2, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 3, 10, 2, 15, 0, 0, locs[0]),
|
||||
time.Date(2014, 3, 10, 2, 30, 0, 0, locs[0]),
|
||||
time.Date(2014, 3, 10, 2, 45, 0, 0, locs[0]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily quarter-hourly leap unskip", locs[0]),
|
||||
"0 */15 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireEarly},
|
||||
time.Date(2014, 3, 9, 1, 0, 0, 0, locs[0]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 3, 9, 3, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 3, 9, 3, 15, 0, 0, locs[0]),
|
||||
time.Date(2014, 3, 9, 3, 30, 0, 0, locs[0]),
|
||||
time.Date(2014, 3, 9, 3, 45, 0, 0, locs[0]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily fall fire early", locs[0]),
|
||||
"0 0 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(2014, 11, 1, 2, 0, 0, 0, locs[0]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 11, 2, 1, 0, 0, 0, locs[0]).Add(1 * time.Hour),
|
||||
time.Date(2014, 11, 3, 2, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 4, 2, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 5, 2, 0, 0, 0, locs[0]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily fall fire late", locs[0]),
|
||||
"0 0 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireLate},
|
||||
time.Date(2014, 11, 1, 2, 0, 0, 0, locs[0]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 11, 2, 2, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 3, 2, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 4, 2, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 5, 2, 0, 0, 0, locs[0]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily fall fire both", locs[0]),
|
||||
"0 0 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly | cronexpr.DSTFallFireLate},
|
||||
time.Date(2014, 11, 1, 2, 0, 0, 0, locs[0]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 11, 2, 1, 0, 0, 0, locs[0]).Add(1 * time.Hour),
|
||||
time.Date(2014, 11, 2, 2, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 3, 2, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 4, 2, 0, 0, 0, locs[0]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s hourly fall fire early", locs[0]),
|
||||
"0 0 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(2014, 11, 2, 0, 0, 0, 0, locs[0]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 11, 2, 1, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 2, 2, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 2, 3, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 2, 4, 0, 0, 0, locs[0]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s hourly fall fire late", locs[0]),
|
||||
"0 0 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireLate},
|
||||
time.Date(2014, 11, 2, 0, 0, 0, 0, locs[0]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 11, 2, 1, 0, 0, 0, locs[0]).Add(1 * time.Hour),
|
||||
time.Date(2014, 11, 2, 2, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 2, 3, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 2, 4, 0, 0, 0, locs[0]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s hourly fall fire twice", locs[0]),
|
||||
"0 0 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly | cronexpr.DSTFallFireLate},
|
||||
time.Date(2014, 11, 2, 0, 0, 0, 0, locs[0]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 11, 2, 1, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 2, 1, 0, 0, 0, locs[0]).Add(1 * time.Hour),
|
||||
time.Date(2014, 11, 2, 2, 0, 0, 0, locs[0]),
|
||||
time.Date(2014, 11, 2, 3, 0, 0, 0, locs[0]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily leap skip", locs[1]),
|
||||
"0 0 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(1981, 3, 31, 2, 0, 0, 0, locs[1]),
|
||||
[]time.Time{
|
||||
time.Date(1981, 4, 2, 2, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 3, 2, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 4, 2, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 5, 2, 0, 0, 0, locs[1]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily leap unskip", locs[1]),
|
||||
"0 0 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireEarly},
|
||||
time.Date(1981, 3, 31, 2, 0, 0, 0, locs[1]),
|
||||
[]time.Time{
|
||||
time.Date(1981, 4, 1, 3, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 2, 2, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 3, 2, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 4, 2, 0, 0, 0, locs[1]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s hourly leap skip", locs[1]),
|
||||
"0 0 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(1981, 3, 31, 23, 0, 0, 0, locs[1]),
|
||||
[]time.Time{
|
||||
time.Date(1981, 4, 1, 3, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 1, 4, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 1, 5, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 1, 6, 0, 0, 0, locs[1]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s hourly leap unskip", locs[1]),
|
||||
"0 0 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireEarly},
|
||||
time.Date(1981, 3, 31, 23, 0, 0, 0, locs[1]),
|
||||
[]time.Time{
|
||||
time.Date(1981, 4, 1, 3, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 1, 4, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 1, 5, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 1, 6, 0, 0, 0, locs[1]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s quarter-hourly leap skip", locs[1]),
|
||||
"0 */15 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(1981, 3, 31, 23, 15, 0, 0, locs[1]),
|
||||
[]time.Time{
|
||||
time.Date(1981, 3, 31, 23, 30, 0, 0, locs[1]),
|
||||
time.Date(1981, 3, 31, 23, 45, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 1, 3, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 1, 3, 15, 0, 0, locs[1]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s quarter-hourly leap unskip", locs[1]),
|
||||
"0 */15 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireEarly},
|
||||
time.Date(1981, 3, 31, 23, 15, 0, 0, locs[1]),
|
||||
[]time.Time{
|
||||
time.Date(1981, 3, 31, 23, 30, 0, 0, locs[1]),
|
||||
time.Date(1981, 3, 31, 23, 45, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 1, 3, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 1, 3, 15, 0, 0, locs[1]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily third-hourly leap skip", locs[1]),
|
||||
"0 */20 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(1981, 3, 31, 2, 40, 0, 0, locs[1]),
|
||||
[]time.Time{
|
||||
time.Date(1981, 4, 2, 2, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 2, 2, 20, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 2, 2, 40, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 3, 2, 0, 0, 0, locs[1]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily third-hourly leap unskip", locs[1]),
|
||||
"0 */20 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireEarly},
|
||||
time.Date(1981, 3, 31, 2, 40, 0, 0, locs[1]),
|
||||
[]time.Time{
|
||||
time.Date(1981, 4, 1, 3, 0, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 1, 3, 20, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 1, 3, 40, 0, 0, locs[1]),
|
||||
time.Date(1981, 4, 2, 2, 0, 0, 0, locs[1]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily leap skip", locs[2]),
|
||||
"0 0 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(2014, 10, 4, 2, 0, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 10, 6, 2, 0, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 7, 2, 0, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 8, 2, 0, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 9, 2, 0, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily leap unskip", locs[2]),
|
||||
"0 0 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireEarly},
|
||||
time.Date(2014, 10, 4, 2, 0, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 10, 5, 2, 30, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 6, 2, 0, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 7, 2, 0, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 8, 2, 0, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s hourly leap skip", locs[2]),
|
||||
"0 0 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(2014, 10, 5, 1, 0, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 10, 5, 3, 0, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 4, 0, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 5, 0, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 6, 0, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s hourly leap unskip", locs[2]),
|
||||
"0 0 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireEarly},
|
||||
time.Date(2014, 10, 5, 1, 0, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 10, 5, 2, 30, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 3, 0, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 4, 0, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 5, 0, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s quarter-hourly leap skip", locs[2]),
|
||||
"0 */15 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(2014, 10, 5, 1, 15, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 10, 5, 1, 30, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 1, 45, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 2, 30, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 2, 45, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s quarter-hourly leap unskip", locs[2]),
|
||||
"0 */15 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireEarly},
|
||||
time.Date(2014, 10, 5, 1, 15, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 10, 5, 1, 30, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 1, 45, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 2, 30, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 2, 45, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s third-hourly leap skip", locs[2]),
|
||||
"0 */20 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(2014, 10, 4, 2, 40, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 10, 5, 2, 40, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 6, 2, 0, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 6, 2, 20, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 6, 2, 40, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s third-hourly leap unskip", locs[2]),
|
||||
"0 */20 2 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireEarly},
|
||||
time.Date(2014, 10, 4, 2, 40, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2014, 10, 5, 2, 30, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 5, 2, 40, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 6, 2, 0, 0, 0, locs[2]),
|
||||
time.Date(2014, 10, 6, 2, 20, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily fall fire early", locs[2]),
|
||||
"0 45 1 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(2015, 4, 5, 1, 0, 0, 0, locs[2]).Add(45 * time.Minute),
|
||||
[]time.Time{
|
||||
time.Date(2015, 4, 6, 1, 45, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 7, 1, 45, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 8, 1, 45, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 9, 1, 45, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily fall fire late", locs[2]),
|
||||
"0 45 1 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireLate},
|
||||
time.Date(2015, 4, 5, 1, 45, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2015, 4, 6, 1, 45, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 7, 1, 45, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 8, 1, 45, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 9, 1, 45, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s daily fall fire twice", locs[2]),
|
||||
"0 45 1 * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly | cronexpr.DSTFallFireLate},
|
||||
time.Date(2015, 4, 5, 1, 0, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2015, 4, 5, 1, 0, 0, 0, locs[2]).Add(45 * time.Minute),
|
||||
time.Date(2015, 4, 5, 1, 45, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 6, 1, 45, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 7, 1, 45, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s hourly fall fire early", locs[2]),
|
||||
"0 30 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(2015, 4, 5, 0, 30, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2015, 4, 5, 0, 30, 0, 0, locs[2]).Add(1 * time.Hour),
|
||||
time.Date(2015, 4, 5, 2, 30, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 3, 30, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 4, 30, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s hourly fall fire late", locs[2]),
|
||||
"0 30 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireLate},
|
||||
time.Date(2015, 4, 5, 0, 30, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2015, 4, 5, 1, 30, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 2, 30, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 3, 30, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 4, 30, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s hourly fall fire twice", locs[2]),
|
||||
"0 30 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly | cronexpr.DSTFallFireLate},
|
||||
time.Date(2015, 4, 5, 0, 30, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2015, 4, 5, 0, 30, 0, 0, locs[2]).Add(1 * time.Hour),
|
||||
time.Date(2015, 4, 5, 1, 30, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 2, 30, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 3, 30, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s half-hourly fall fire early", locs[2]),
|
||||
"0 */30 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly},
|
||||
time.Date(2015, 4, 5, 1, 0, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2015, 4, 5, 1, 0, 0, 0, locs[2]).Add(30 * time.Minute),
|
||||
time.Date(2015, 4, 5, 2, 0, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 2, 30, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 3, 0, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s half-hourly fall fire late", locs[2]),
|
||||
"0 */30 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireLate},
|
||||
time.Date(2015, 4, 5, 1, 0, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2015, 4, 5, 1, 30, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 2, 0, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 2, 30, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 3, 0, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
{
|
||||
fmt.Sprintf("%s half-hourly fall fire twice", locs[2]),
|
||||
"0 */30 * * * * *",
|
||||
cronexpr.Options{DSTFlags: cronexpr.DSTFallFireEarly | cronexpr.DSTFallFireLate},
|
||||
time.Date(2015, 4, 5, 1, 0, 0, 0, locs[2]),
|
||||
[]time.Time{
|
||||
time.Date(2015, 4, 5, 1, 0, 0, 0, locs[2]).Add(30 * time.Minute),
|
||||
time.Date(2015, 4, 5, 1, 30, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 2, 0, 0, 0, locs[2]),
|
||||
time.Date(2015, 4, 5, 2, 30, 0, 0, locs[2]),
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
for _, tc := range cases {
|
||||
s, err := cronexpr.ParseWithOptions(tc.expr, tc.opts)
|
||||
if err != nil {
|
||||
t.Fatalf("parser error: %s", err)
|
||||
}
|
||||
|
||||
runs := s.NextN(tc.from, 4)
|
||||
if len(runs) != 4 {
|
||||
t.Errorf("Case %s: Expected 4 runs, got %d", tc.name, len(runs))
|
||||
}
|
||||
|
||||
for i := 0; i < len(runs); i++ {
|
||||
if !runs[i].Equal(tc.expected[i]) {
|
||||
t.Errorf("Case %s: Expected %v, got %v", tc.name, tc.expected[i], runs[i])
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
var benchmarkExpressions = []string{
|
||||
|
|
|
|||
|
|
@ -35,3 +35,81 @@ func ExampleMustParse() {
|
|||
// Sun, 29 Feb 2032 00:00:00 UTC
|
||||
}
|
||||
}
|
||||
|
||||
// Configure the parser to skip times in DST leaps and
|
||||
// repeat times in DST falls
|
||||
func ExampleParseWithOptions_dst1() {
|
||||
loc, _ := time.LoadLocation("America/Los_Angeles")
|
||||
t := time.Date(2014, 3, 8, 1, 0, 0, 0, loc)
|
||||
expr, _ := cronexpr.ParseWithOptions("0 0 2 * * * *", cronexpr.Options{
|
||||
DSTFlags: cronexpr.DSTFallFireEarly | cronexpr.DSTFallFireLate,
|
||||
})
|
||||
|
||||
fmt.Println("DST leap times:")
|
||||
nextTimes := expr.NextN(t, 4)
|
||||
for i := range nextTimes {
|
||||
fmt.Println(nextTimes[i].Format(time.RFC1123))
|
||||
}
|
||||
|
||||
t = time.Date(2014, 10, 31, 1, 0, 0, 0, loc)
|
||||
expr, _ = cronexpr.ParseWithOptions("0 0 1 * * * *", cronexpr.Options{
|
||||
DSTFlags: cronexpr.DSTFallFireEarly | cronexpr.DSTFallFireLate,
|
||||
})
|
||||
|
||||
fmt.Println("DST fall times:")
|
||||
nextTimes = expr.NextN(t, 4)
|
||||
for i := range nextTimes {
|
||||
fmt.Println(nextTimes[i].Format(time.RFC1123))
|
||||
}
|
||||
|
||||
// Output:
|
||||
// DST leap times:
|
||||
// Sat, 08 Mar 2014 02:00:00 PST
|
||||
// Mon, 10 Mar 2014 02:00:00 PDT
|
||||
// Tue, 11 Mar 2014 02:00:00 PDT
|
||||
// Wed, 12 Mar 2014 02:00:00 PDT
|
||||
// DST fall times:
|
||||
// Sat, 01 Nov 2014 01:00:00 PDT
|
||||
// Sun, 02 Nov 2014 01:00:00 PDT
|
||||
// Sun, 02 Nov 2014 01:00:00 PST
|
||||
// Mon, 03 Nov 2014 01:00:00 PST
|
||||
}
|
||||
|
||||
// Configure the parser to unskip times in DST leaps and
|
||||
// fire late in DST falls
|
||||
func ExampleParseWithOptions_dst2() {
|
||||
loc, _ := time.LoadLocation("America/Los_Angeles")
|
||||
t := time.Date(2014, 3, 8, 1, 0, 0, 0, loc)
|
||||
expr, _ := cronexpr.ParseWithOptions("0 0 2 * * * *", cronexpr.Options{
|
||||
DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireLate,
|
||||
})
|
||||
|
||||
fmt.Println("DST leap times:")
|
||||
nextTimes := expr.NextN(t, 4)
|
||||
for i := range nextTimes {
|
||||
fmt.Println(nextTimes[i].Format(time.RFC1123))
|
||||
}
|
||||
|
||||
t = time.Date(2014, 10, 31, 1, 0, 0, 0, loc)
|
||||
expr, _ = cronexpr.ParseWithOptions("0 0 1 * * * *", cronexpr.Options{
|
||||
DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireLate,
|
||||
})
|
||||
|
||||
fmt.Println("DST fall times:")
|
||||
nextTimes = expr.NextN(t, 4)
|
||||
for i := range nextTimes {
|
||||
fmt.Println(nextTimes[i].Format(time.RFC1123))
|
||||
}
|
||||
|
||||
// Output:
|
||||
// DST leap times:
|
||||
// Sat, 08 Mar 2014 02:00:00 PST
|
||||
// Sun, 09 Mar 2014 03:00:00 PDT
|
||||
// Mon, 10 Mar 2014 02:00:00 PDT
|
||||
// Tue, 11 Mar 2014 02:00:00 PDT
|
||||
// DST fall times:
|
||||
// Sat, 01 Nov 2014 01:00:00 PDT
|
||||
// Sun, 02 Nov 2014 01:00:00 PST
|
||||
// Mon, 03 Nov 2014 01:00:00 PST
|
||||
// Tue, 04 Nov 2014 01:00:00 PST
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue