// Forget removes a buddy from the buddy list
func Forget(dependencies *map[string]time.Time, router *ribbon.Router, msg gotocol.Message) {
microservice := msg.Intention // message body is buddy name to forget
if router.Named(microservice) != nil { // an existing buddy to forget
// forget how to talk to this buddy
(*dependencies)[names.Service(microservice)] = msg.Sent // remember when we were told to forget this service
router.Remove(microservice)
}
}
// NameDrop updates local buddy list
func NameDrop(dependencies *map[string]time.Time, router *ribbon.Router, msg gotocol.Message, name string, listener chan gotocol.Message, eureka map[string]chan gotocol.Message, crosszone ...bool) {
if msg.ResponseChan == nil { // dependency by service name, needs to be looked up in eureka
(*dependencies)[msg.Intention] = msg.Sent // remember it for later
for _, ch := range eureka {
//log.Println(name + " looking up " + msg.Intention)
gotocol.Send(ch, gotocol.Message{gotocol.GetRequest, listener, time.Now(), gotocol.NilContext, msg.Intention})
}
} else { // update dependency with full name and listener channel
microservice := msg.Intention // message body is buddy name
if len(crosszone) > 0 || names.Zone(name) == names.Zone(microservice) {
if microservice != name && router.Named(microservice) == nil { // don't talk to myself or record duplicates
// remember how to talk to this buddy
router.Add(microservice, msg.ResponseChan, msg.Sent) // message channel is buddy's listener
(*dependencies)[names.Service(microservice)] = msg.Sent
for _, ch := range eureka {
// tell just one of the service registries I have a new buddy to talk to so it doesn't get logged more than once
gotocol.Send(ch, gotocol.Message{gotocol.Inform, listener, time.Now(), gotocol.NilContext, name + " " + microservice})
return
}
}
}
}
}