111 lines
1.8 KiB
Go
111 lines
1.8 KiB
Go
package main
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import (
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"log"
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"sync"
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"time"
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"srs.epita.fr/fic-server/settings"
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)
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// distList maintain a nextSettingsFile list up-to-date.
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type distList struct {
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List []*settings.NextSettingsFile
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Lock sync.RWMutex
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Timer *time.Timer
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}
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// NewDistList creates a distList from the given src directory
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func NewDistList(src string) (*distList, error) {
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list, err := settings.ListNextSettingsFiles()
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if err != nil {
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return nil, err
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}
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return &distList{List: list, Timer: time.NewTimer(time.Minute)}, nil
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}
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func (l *distList) TimerNextEvent() *time.Timer {
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l.Lock.RLock()
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defer l.Lock.RUnlock()
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var min *time.Time
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for _, f := range l.List {
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if min == nil || f.Date.Before(*min) {
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min = &f.Date
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}
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}
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if min == nil {
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return nil
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}
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if min == nil {
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return nil
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}
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return time.NewTimer(time.Until(*min))
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}
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func (l *distList) AddEvent(nsf *settings.NextSettingsFile) {
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l.Lock.Lock()
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istop := len(l.List)
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for i, n := range l.List {
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if n.Id == nsf.Id {
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return
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} else if n.Date.After(nsf.Date) {
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istop = i
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break
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}
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}
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l.List = append(l.List, nsf)
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copy(l.List[istop+1:], l.List[istop:])
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l.List[istop] = nsf
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l.Lock.Unlock()
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if istop == 0 {
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l.ResetTimer()
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}
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}
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func (l *distList) ResetTimer() {
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l.Lock.RLock()
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defer l.Lock.RUnlock()
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if len(l.List) == 0 {
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l.Timer.Reset(time.Minute)
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} else {
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l.Timer.Reset(time.Until(l.List[0].Date))
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}
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}
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func (l *distList) Pop() *settings.NextSettingsFile {
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l.Lock.Lock()
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defer l.Lock.Unlock()
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if len(l.List) == 0 {
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return nil
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}
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if time.Now().Before(l.List[0].Date) {
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return nil
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}
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ret := l.List[0]
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l.List = l.List[1:]
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return ret
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}
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func (l *distList) Print() {
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l.Lock.RLock()
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defer l.Lock.RUnlock()
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log.Println("Seeing distlist")
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for n, i := range l.List {
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log.Printf("#%d: %v", n, *i)
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}
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}
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