package messagebus

import "github.com/vardius/message-bus"

Package messagebus provides simple async message publisher

bus := messagebus.New(runtime.NumCPU())

var wg sync.WaitGroup
wg.Add(2)

bus.Subscribe("topic", func(v bool) {
    defer wg.Done()
    fmt.Println("s1", v)
})

bus.Subscribe("topic", func(v bool) {
    defer wg.Done()
    fmt.Println("s2", v)
})

bus.Publish("topic", true)
wg.Wait()
// Unordered output:
// s1 true
// s2 true

s1 true
s2 true

Index ¶

• type MessageBus
• func New(maxConcurrentCalls int) MessageBus

Examples ¶

• package

Package Files ¶

bus.go doc.go

type MessageBus ¶ Uses

type MessageBus interface {
    Publish(topic string, args ...interface{})
    Subscribe(topic string, fn interface{}) error
    Unsubscribe(topic string, fn interface{}) error
}

MessageBus implements publish/subscribe messaging paradigm

func New ¶ Uses

func New(maxConcurrentCalls int) MessageBus

New creates new MessageBus maxConcurrentCalls limits concurrency by using a buffered channel semaphore