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47 lines
685 B
Go
47 lines
685 B
Go
package bus
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import (
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"sync"
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)
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type eventbus struct {
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sync.Mutex
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subs map[chan *Event]bool
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}
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// New creates a simple event bus that manages a list of
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// subscribers to which events are published.
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func New() Bus {
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return newEventbus()
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}
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func newEventbus() *eventbus {
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return &eventbus{
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subs: make(map[chan *Event]bool),
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}
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}
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func (b *eventbus) Subscribe(c chan *Event) {
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b.Lock()
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b.subs[c] = true
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b.Unlock()
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}
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func (b *eventbus) Unsubscribe(c chan *Event) {
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b.Lock()
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delete(b.subs, c)
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b.Unlock()
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}
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func (b *eventbus) Publish(event *Event) {
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b.Lock()
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defer b.Unlock()
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for s := range b.subs {
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go func(c chan *Event) {
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defer recover()
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c <- event
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}(s)
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}
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}
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