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union: fix ChangeNotify to support multiple remotes

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To correctly support multiple remotes, each remote has to receive a
value on the input channel.
This commit is contained in:
Fabian Möller 2018-10-07 11:13:37 +02:00
parent 364fca5cea
commit 1e2676df26
1 changed files with 15 additions and 0 deletions
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15
backend/union/union.go
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@ -152,11 +152,26 @@ func (f *Fs) DirMove(src fs.Fs, srcRemote, dstRemote string) error {
// regulary. When the channel gets closed, the implemantion // regulary. When the channel gets closed, the implemantion
// should stop polling and release resources. // should stop polling and release resources.
func (f *Fs) ChangeNotify(fn func(string, fs.EntryType), ch <-chan time.Duration) { func (f *Fs) ChangeNotify(fn func(string, fs.EntryType), ch <-chan time.Duration) {
var remoteChans []chan time.Duration
for _, remote := range f.remotes { for _, remote := range f.remotes {
if ChangeNotify := remote.Features().ChangeNotify; ChangeNotify != nil { if ChangeNotify := remote.Features().ChangeNotify; ChangeNotify != nil {
ch := make(chan time.Duration)
remoteChans = append(remoteChans, ch)
ChangeNotify(fn, ch) ChangeNotify(fn, ch)
} }
} }
go func() {
for i := range ch {
for _, c := range remoteChans {
c <- i
}
}
for _, c := range remoteChans {
close(c)
}
}()
} }
// DirCacheFlush resets the directory cache - used in testing // DirCacheFlush resets the directory cache - used in testing