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|
package pipe
import (
"context"
"os/exec"
"github.com/spiral/goridge/v3/pkg/pipe"
"github.com/spiral/roadrunner/v2/events"
"github.com/spiral/roadrunner/v2/internal"
"github.com/spiral/roadrunner/v2/worker"
)
// Factory connects to stack using standard
// streams (STDIN, STDOUT pipes).
type Factory struct{}
// NewPipeFactory returns new factory instance and starts
// listening
func NewPipeFactory() *Factory {
return &Factory{}
}
type sr struct {
w *worker.Process
err error
}
// SpawnWorkerWithTimeout creates new Process and connects it to goridge relay,
// method Wait() must be handled on level above.
func (f *Factory) SpawnWorkerWithTimeout(ctx context.Context, cmd *exec.Cmd, listeners ...events.Listener) (*worker.Process, error) {
spCh := make(chan sr)
go func() {
w, err := worker.InitBaseWorker(cmd, worker.AddListeners(listeners...))
if err != nil {
select {
case spCh <- sr{
w: nil,
err: err,
}:
return
default:
return
}
}
in, err := cmd.StdoutPipe()
if err != nil {
select {
case spCh <- sr{
w: nil,
err: err,
}:
return
default:
return
}
}
out, err := cmd.StdinPipe()
if err != nil {
select {
case spCh <- sr{
w: nil,
err: err,
}:
return
default:
return
}
}
// Init new PIPE relay
relay := pipe.NewPipeRelay(in, out)
w.AttachRelay(relay)
// Start the worker
err = w.Start()
if err != nil {
select {
case spCh <- sr{
w: nil,
err: err,
}:
return
default:
return
}
}
// used as a ping
_, err = internal.Pid(relay)
if err != nil {
_ = w.Kill()
select {
case spCh <- sr{
w: nil,
err: err,
}:
return
default:
_ = w.Kill()
return
}
}
select {
case
// return worker
spCh <- sr{
w: w,
err: nil,
}:
// everything ok, set ready state
w.State().Set(worker.StateReady)
return
default:
_ = w.Kill()
return
}
}()
select {
case <-ctx.Done():
return nil, ctx.Err()
case res := <-spCh:
if res.err != nil {
return nil, res.err
}
return res.w, nil
}
}
func (f *Factory) SpawnWorker(cmd *exec.Cmd, listeners ...events.Listener) (*worker.Process, error) {
w, err := worker.InitBaseWorker(cmd, worker.AddListeners(listeners...))
if err != nil {
return nil, err
}
in, err := cmd.StdoutPipe()
if err != nil {
return nil, err
}
out, err := cmd.StdinPipe()
if err != nil {
return nil, err
}
// Init new PIPE relay
relay := pipe.NewPipeRelay(in, out)
w.AttachRelay(relay)
// Start the worker
err = w.Start()
if err != nil {
return nil, err
}
// errors bundle
_, err = internal.Pid(relay)
if err != nil {
_ = w.Kill()
return nil, err
}
// everything ok, set ready state
w.State().Set(worker.StateReady)
return w, nil
}
// Close the factory.
func (f *Factory) Close() error {
return nil
}
|
