eventbus

package

v0.0.0-...-4581c0e Latest Latest Go to latest Published: Jul 22, 2020 License: MIT Imports: 4 Imported by: 0

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type ErrFunc func(err error)

ErrFunc used by handler to report error from observation

type GoroutinePoolGoFunc func(func()) error

GoroutinePoolGoFunc processes actions via provided function

type GoroutinePoolHandler struct {
	// contains filtered or unexported fields
}

GoroutinePoolHandler submit events to goroutine pool for process them.

func NewGoroutinePoolHandler(
	goroutinePoolGo GoroutinePoolGoFunc,
	eventsHandler event.Handler,
	errFunc ErrFunc) *GoroutinePoolHandler

NewGoroutinePoolHandler creates new event processor.

func (ep *GoroutinePoolHandler) Handle(ctx context.Context, iter event.Iter) (err error)

Handle pushes event to queue and process the queue by goroutine pool.

type Observer interface {
	Close() error
	SetTopics(ctx context.Context, topics []string) error
}

Observer handles events from observation and forward them to event.EventHandler.

type Publisher interface {
	Publish(ctx context.Context, topics []string, groupId, aggregateId string, event event.Event) error
}

Publisher publish event to topics

type Subscriber interface {
	Subscribe(ctx context.Context, subscriptionID string, topics []string, eh event.Handler) (Observer, error)
}

Subscriber creates observation over topics. When subscriptionID is same among more Subscribers events are balanced among them.

Path	Synopsis
kafka
nats