github.com/whiteboxio/flow@v0.0.3-0.20190918184116-508d75d68a2c/pkg/corev1alpha1/actor/mux.go (about)

     1  package actor
     2  
     3  import (
     4  	"sync"
     5  
     6  	core "github.com/awesome-flow/flow/pkg/corev1alpha1"
     7  )
     8  
     9  type Mux struct {
    10  	name  string
    11  	ctx   *core.Context
    12  	queue chan *core.Message
    13  	wg    sync.WaitGroup
    14  }
    15  
    16  var _ core.Actor = (*Mux)(nil)
    17  
    18  func NewMux(name string, ctx *core.Context, params core.Params) (core.Actor, error) {
    19  	return &Mux{
    20  		name:  name,
    21  		ctx:   ctx,
    22  		queue: make(chan *core.Message),
    23  	}, nil
    24  }
    25  
    26  func (m *Mux) Name() string {
    27  	return m.name
    28  }
    29  
    30  func (m *Mux) Start() error {
    31  	return nil
    32  }
    33  
    34  func (m *Mux) Stop() error {
    35  	close(m.queue)
    36  	m.wg.Wait()
    37  	return nil
    38  }
    39  
    40  func (m *Mux) Connect(nthreads int, peer core.Receiver) error {
    41  	for i := 0; i < nthreads; i++ {
    42  		m.wg.Add(1)
    43  		go func() {
    44  			for msg := range m.queue {
    45  				if err := peer.Receive(msg); err != nil {
    46  					msg.Complete(core.MsgStatusFailed)
    47  					m.ctx.Logger().Error(err.Error())
    48  				}
    49  			}
    50  			m.wg.Done()
    51  		}()
    52  	}
    53  	return nil
    54  }
    55  
    56  func (m *Mux) Receive(msg *core.Message) error {
    57  	m.queue <- msg
    58  	return nil
    59  }