wip: flow task start

internal/controller/pipe/loadash/loadash.go

@@ -1,29 +1,41 @@
 package loadash
 
 import (
+	"errors"
 	"fmt"
 	"github.com/dop251/goja"
+	"github.com/loveuer/nfflow/internal/interfaces"
+	"github.com/loveuer/nfflow/internal/sqlType"
 	"github.com/sirupsen/logrus"
 )
 
 type PipeMap struct {
 	vm *goja.Runtime
+	FN string `json:"fn"`
 }
 
-func NewPipeMap(fn string) (*PipeMap, error) {
+func NewPipeMap(cfg sqlType.JSONB) (interfaces.Pipe, error) {
 	var (
 		err    error
 		pm     = &PipeMap{}
 		prefix = "let result; let doc; let myFn;"
 	)
 
+	if err = cfg.Bind(pm); err != nil {
+		return nil, err
+	}
+
+	if pm.FN == "" {
+		return nil, errors.New("nil cfg")
+	}
+
 	pm.vm = goja.New()
 	if _, err = pm.vm.RunString(prefix); err != nil {
 		logrus.Debugf("NewPipeMap: run prepare=%s err=%v", prefix, err)
 		return nil, err
 	}
 
-	fn = "myFn = " + fn + ";"
+	fn := "myFn = " + pm.FN + ";"
 	if _, err = pm.vm.RunString(fn); err != nil {
 		err = fmt.Errorf("PipeMap: vm run string=%s err=%v", fn, err)
 		logrus.Error(err)
@@ -33,7 +45,7 @@ func NewPipeMap(fn string) (*PipeMap, error) {
 	return pm, nil
 }
 
-func (m *PipeMap) Pipe(data any) (any, error) {
+func (m *PipeMap) Start(data any) (any, error) {
 	var (
 		err error
 	)
@@ -50,3 +62,7 @@ func (m *PipeMap) Pipe(data any) (any, error) {
 
 	return value, nil
 }
+
+func (m *PipeMap) Close() {
+	m.vm = nil
+}