admin
e6956aa001
- React frontend with route-level code splitting - Backend rebranded from Baihu to TaskPool - DB brand migration script and local compatibility
51 lines
1.0 KiB
Go
51 lines
1.0 KiB
Go
package eventbus
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import "sync"
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// Event 统一定义的事件体内包含的数据
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type Event struct {
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Type string
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Payload interface{}
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}
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// Handler 事件具体的执行句柄
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type Handler func(event Event)
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// Subscriber 事件订阅者接口，各业务 Service 若关注系统总线可实现此接口
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type Subscriber interface {
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SubscribeEvents(bus *EventBus)
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}
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type EventBus struct {
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handlers map[string][]Handler
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mu sync.RWMutex
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}
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func New() *EventBus {
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return &EventBus{
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handlers: make(map[string][]Handler),
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}
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}
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// Subscribe 注册订阅事件
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func (bus *EventBus) Subscribe(eventType string, handler Handler) {
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bus.mu.Lock()
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defer bus.mu.Unlock()
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bus.handlers[eventType] = append(bus.handlers[eventType], handler)
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}
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// Publish 异步抛出事件
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func (bus *EventBus) Publish(event Event) {
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bus.mu.RLock()
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handlers := bus.handlers[event.Type]
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bus.mu.RUnlock()
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for _, handler := range handlers {
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// 采用 Goroutine 异步不阻塞核心主线
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go handler(event)
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}
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}
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// 全局唯一的事件总线实例
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var DefaultBus = New()
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