github.com/aergoio/aergo@v1.3.1/chain/subcomponent.go (about)

     1  package chain
     2  
     3  import (
     4  	"fmt"
     5  	"github.com/aergoio/aergo-actor/actor"
     6  	"github.com/aergoio/aergo-actor/router"
     7  	"github.com/aergoio/aergo/pkg/component"
     8  )
     9  
    10  // SubComponent handles message with Receive(), and requests to other actor services with IComponentRequester
    11  // To use SubComponent, only need to implement Actor interface
    12  type SubComponent struct {
    13  	actor.Actor
    14  	component.IComponentRequester // use basecomponent to request to other actors
    15  
    16  	name  string
    17  	pid   *actor.PID
    18  	count int
    19  }
    20  
    21  const (
    22  	defaultChainWorkerCount = 5
    23  )
    24  
    25  func NewSubComponent(subactor actor.Actor, requester *component.BaseComponent, name string, cntWorker int) *SubComponent {
    26  	return &SubComponent{
    27  		Actor:               subactor,
    28  		IComponentRequester: requester,
    29  		name:                name,
    30  		count:               cntWorker}
    31  }
    32  
    33  // spawn new subactor
    34  func (sub *SubComponent) Start() {
    35  	sub.pid = actor.Spawn(router.NewRoundRobinPool(sub.count).WithInstance(sub.Actor))
    36  
    37  	msg := fmt.Sprintf("%s[%d] started", sub.name, sub.count)
    38  	logger.Info().Msg(msg)
    39  }
    40  
    41  // stop subactor
    42  func (sub *SubComponent) Stop() {
    43  	sub.pid.GracefulStop()
    44  	msg := fmt.Sprintf("%s stoped", sub.name)
    45  	logger.Info().Msg(msg)
    46  }
    47  
    48  //send message to this subcomponent and reply to actor with pid respondTo
    49  func (sub *SubComponent) Request(message interface{}, respondTo *actor.PID) {
    50  	sub.pid.Request(message, respondTo)
    51  }