refactor: implement most of ps plugin in golang

plugins/ps/src/triggers/triggers.go

@@ -0,0 +1,80 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/dokku/dokku/plugins/common"
+	"github.com/dokku/dokku/plugins/ps"
+)
+
+// main entrypoint to all triggers
+func main() {
+	parts := strings.Split(os.Args[0], "/")
+	trigger := parts[len(parts)-1]
+	flag.Parse()
+
+	var err error
+	switch trigger {
+	case "app-restart":
+		appName := flag.Arg(0)
+		err = ps.TriggerAppRestart(appName)
+	case "core-post-deploy":
+		appName := flag.Arg(0)
+		err = ps.TriggerCorePostDeploy(appName)
+	case "install":
+		err = ps.TriggerInstall()
+	case "post-app-clone":
+		oldAppName := flag.Arg(0)
+		newAppName := flag.Arg(1)
+		err = ps.TriggerPostAppClone(oldAppName, newAppName)
+	case "post-app-rename":
+		oldAppName := flag.Arg(0)
+		newAppName := flag.Arg(1)
+		err = ps.TriggerPostAppRename(oldAppName, newAppName)
+	case "post-create":
+		appName := flag.Arg(0)
+		err = ps.TriggerPostCreate(appName)
+	case "post-delete":
+		appName := flag.Arg(0)
+		err = ps.TriggerPostDelete(appName)
+	case "post-extract":
+		appName := flag.Arg(0)
+		tmpWorkDir := flag.Arg(1)
+		err = ps.TriggerPostExtract(appName, tmpWorkDir)
+	case "post-stop":
+		appName := flag.Arg(0)
+		err = ps.TriggerPostStop(appName)
+	case "pre-deploy":
+		appName := flag.Arg(0)
+		imageTag := flag.Arg(1)
+		err = ps.TriggerPreDeploy(appName, imageTag)
+	case "procfile-extract":
+		appName := flag.Arg(0)
+		image := flag.Arg(1)
+		forceExtract := common.ToBool(flag.Arg(2))
+		procfilePath := flag.Arg(3)
+		err = ps.TriggerProcfileExtract(appName, image, forceExtract, procfilePath)
+	case "procfile-get-command":
+		appName := flag.Arg(0)
+		processType := flag.Arg(1)
+		port := common.ToInt(flag.Arg(2), 5000)
+		procfilePath := flag.Arg(3)
+		err = ps.TriggerProcfileGetCommand(appName, processType, port, procfilePath)
+	case "procfile-remove":
+		appName := flag.Arg(0)
+		procfilePath := flag.Arg(1)
+		err = ps.TriggerProcfileRemove(appName, procfilePath)
+	case "report":
+		appName := flag.Arg(0)
+		err = ps.ReportSingleApp(appName, "")
+	default:
+		common.LogFail(fmt.Sprintf("Invalid plugin trigger call: %s", trigger))
+	}
+
+	if err != nil {
+		common.LogFail(err.Error())
+	}
+}