tinkerbell/worker.go

75 lines
1.4 KiB
Go

package main
import (
"errors"
"github.com/barakmich/tinkerbell/ray_rpc"
"go.uber.org/zap"
)
type WorkstreamConnection = ray_rpc.RayletWorkerConnection_WorkstreamServer
type Worker interface {
AssignWork(work *ray_rpc.Work) error
Run() error
Close() error
Schedulable() bool
}
type SimpleWorker struct {
workChan chan *ray_rpc.Work
clientConn WorkstreamConnection
pool WorkerPool
max int
curr int
}
func (s *SimpleWorker) Schedulable() bool {
return s.curr < s.max
}
func (s *SimpleWorker) AssignWork(work *ray_rpc.Work) error {
s.workChan <- work
return nil
}
func (s *SimpleWorker) Close() error {
close(s.workChan)
return nil
}
func (w *SimpleWorker) Run() error {
sentinel, err := w.clientConn.Recv()
if err != nil {
return err
}
if sentinel.Status != ray_rpc.READY {
return errors.New("Sent wrong sentinel? Closing...")
}
zap.S().Info("New worker:", sentinel.ErrorMsg)
go func() {
for work := range w.workChan {
zap.S().Debug("Sending work")
w.curr++
err = w.clientConn.Send(work)
if err != nil {
zap.S().Error("Error sending:", err)
return
}
}
}()
for {
result, err := w.clientConn.Recv()
if err != nil {
zap.S().Error("Error on channel:", err)
return err
}
w.curr--
err = w.pool.Finish(result)
if err != nil {
zap.S().Error("Error finishing:", err)
return err
}
}
return nil
}