Use new plugin sdk interface to build example plugin (#5699)

Signed-off-by: Shinnosuke Sawada-Dazai <[email protected]>

Author: Warashi

pkg/app/pipedv1/plugin/example/main.go

@@ -21,9 +21,12 @@ import (
 )
 
 func main() {
-	sdk.RegisterStagePlugin(&plugin{})
+	plugin, err := sdk.NewPlugin("example", "0.0.1", sdk.WithStagePlugin(&plugin{}))
+	if err != nil {
+		log.Fatalln(err)
+	}
 
-	if err := sdk.Run(); err != nil {
+	if err := plugin.Run(); err != nil {
 		log.Fatalln(err)
 	}
 }

pkg/app/pipedv1/plugin/example/plugin.go

@@ -25,11 +25,13 @@ type plugin struct{}
 type config struct{}
 
 // Name implements sdk.Plugin.
+// TODO: remove this method after changing the sdk.StagePlugin interface.
 func (p *plugin) Name() string {
 	return "example"
 }
 
 // Version implements sdk.Plugin.
+// TODO: remove this method after changing the sdk.StagePlugin interface.
 func (p *plugin) Version() string {
 	return "0.0.1"
 }