1 files changed, 197 insertions, 0 deletions
diff --git a/transport/pipe/pipe_factory.go b/transport/pipe/pipe_factory.go
new file mode 100755
index 00000000..0d46f496
--- /dev/null
+++ b/transport/pipe/pipe_factory.go
@@ -0,0 +1,197 @@
+package pipe
+
+import (
+	"context"
+	"os/exec"
+
+	"github.com/spiral/errors"
+	"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"
+	"go.uber.org/multierr"
+)
+
+// 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) { //nolint:gocognit
+	spCh := make(chan sr)
+	const op = errors.Op("factory_spawn_worker_with_timeout")
+	go func() {
+		w, err := worker.InitBaseWorker(cmd, worker.AddListeners(listeners...))
+		if err != nil {
+			select {
+			case spCh <- sr{
+				w:   nil,
+				err: errors.E(op, err),
+			}:
+				return
+			default:
+				return
+			}
+		}
+
+		in, err := cmd.StdoutPipe()
+		if err != nil {
+			select {
+			case spCh <- sr{
+				w:   nil,
+				err: errors.E(op, err),
+			}:
+				return
+			default:
+				return
+			}
+		}
+
+		out, err := cmd.StdinPipe()
+		if err != nil {
+			select {
+			case spCh <- sr{
+				w:   nil,
+				err: errors.E(op, 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: errors.E(op, err),
+			}:
+				return
+			default:
+				return
+			}
+		}
+
+		pid, err := internal.FetchPID(relay)
+		if err != nil {
+			err = multierr.Combine(
+				err,
+				w.Kill(),
+				w.Wait(),
+			)
+			select {
+			case spCh <- sr{
+				w:   nil,
+				err: errors.E(op, err),
+			}:
+				return
+			default:
+				_ = w.Kill()
+				return
+			}
+		}
+
+		if pid != w.Pid() {
+			select {
+			case spCh <- sr{
+				w:   nil,
+				err: errors.E(op, errors.Errorf("pid mismatches, get: %d, want: %d", pid, w.Pid())),
+			}:
+				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) {
+	const op = errors.Op("factory_spawn_worker")
+	w, err := worker.InitBaseWorker(cmd, worker.AddListeners(listeners...))
+	if err != nil {
+		return nil, errors.E(op, err)
+	}
+
+	in, err := cmd.StdoutPipe()
+	if err != nil {
+		return nil, errors.E(op, err)
+	}
+
+	out, err := cmd.StdinPipe()
+	if err != nil {
+		return nil, errors.E(op, err)
+	}
+
+	// Init new PIPE relay
+	relay := pipe.NewPipeRelay(in, out)
+	w.AttachRelay(relay)
+
+	// Start the worker
+	err = w.Start()
+	if err != nil {
+		return nil, errors.E(op, err)
+	}
+
+	// errors bundle
+	if pid, err := internal.FetchPID(relay); pid != w.Pid() {
+		err = multierr.Combine(
+			err,
+			w.Kill(),
+			w.Wait(),
+		)
+		return nil, errors.E(op, err)
+	}
+
+	// everything ok, set ready state
+	w.State().Set(worker.StateReady)
+	return w, nil
+}
+
+// Close the factory.
+func (f *Factory) Close() error {
+	return nil
+}