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factory.go
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factory.go
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package mserver
import (
"github.com/enfabrica/enkit/lib/knetwork/kdns"
"github.com/enfabrica/enkit/lib/logger"
"github.com/enfabrica/enkit/machinist/state"
"log"
"time"
)
func NewController(mods ...ControllerModifier) (*Controller, error) {
en := &Controller{
State: &state.MachineController{},
stateWriteTTL: time.Second * 30,
allRecordsRefreshRate: time.Second * 5,
Log: &logger.DefaultLogger{Printer: log.Printf},
}
for _, m := range mods {
if err := m(en); err != nil {
return nil, err
}
}
return en, nil
}
type ControllerModifier func(*Controller) error
func WithKDnsFlags(mods ...kdns.DNSModifier) ControllerModifier {
return func(controller *Controller) error {
if controller.dnsServer == nil {
dnsServ, err := kdns.NewDNS(mods...)
if err != nil {
return err
}
controller.dnsServer = dnsServ
}
return nil
}
}
func WithStateFile(filepath string) ControllerModifier {
return func(controller *Controller) error {
s, err := state.ReadInController(filepath)
if err != nil {
controller.Log.Warnf("Unable to read in state, err: %v", err)
return nil
}
controller.State = s
controller.stateFile = filepath
return nil
}
}
func WithStateWriteDuration(duration string) ControllerModifier {
return func(controller *Controller) error {
d, err := time.ParseDuration(duration)
if err != nil {
return err
}
controller.stateWriteTTL = d
return nil
}
}
func WithAllRecordsRefreshRate(duration string) ControllerModifier {
return func(controller *Controller) error {
d, err := time.ParseDuration(duration)
if err != nil {
return err
}
controller.allRecordsRefreshRate = d
return nil
}
}