69 lines
1.0 KiB
Go
69 lines
1.0 KiB
Go
package hub
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import (
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"sync"
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"github.com/KosyanMedia/burlesque/storage"
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)
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type (
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Hub struct {
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storage *storage.Storage
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subscribers []*Subscription
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lock sync.Mutex
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}
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)
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func New(st *storage.Storage) *Hub {
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return &Hub{
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storage: st,
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subscribers: []*Subscription{},
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}
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}
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func (h *Hub) Pub(queue string, msg []byte) bool {
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for _, s := range h.subscribers {
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if ok := s.Need(queue); ok {
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select {
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case <-s.Done():
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continue
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default:
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}
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if ok := s.Send(Result{queue, msg}); ok {
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return true
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}
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}
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}
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err := h.storage.Put(queue, msg)
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return (err == nil)
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}
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func (h *Hub) Sub(s *Subscription) {
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for _, q := range s.Queues {
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if msg, ok := h.storage.Get(q); ok {
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s.Send(Result{q, msg})
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return
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}
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}
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h.subscribers = append(h.subscribers, s)
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}
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func (h *Hub) cleanup() {
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h.lock.Lock()
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defer h.lock.Unlock()
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deleted := 0
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for i, s := range h.subscribers {
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select {
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case <-s.Done():
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h.subscribers = append(h.subscribers[:i-deleted], h.subscribers[i-deleted+1:]...)
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deleted++
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default:
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}
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}
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}
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