feat: os-dependent default entrypoint

Co-authored-by: Roberto Abdelkader Martínez Pérez <robertomartinezp@gmail.com>

internal/client/route_add.go

@@ -27,10 +27,14 @@ import (
 // AddRoute will add a new route in kapow
 func AddRoute(host, path, method, entrypoint, command string, w io.Writer) error {
 	url := host + "/routes"
-	body, _ := json.Marshal(map[string]string{
+	payload := map[string]string{
 		"method":      method,
 		"url_pattern": path,
-		"entrypoint":  entrypoint,
-		"command":     command})
+		"command":     command,
+	}
+	if entrypoint != "" {
+		payload["entrypoint"] = entrypoint
+	}
+	body, _ := json.Marshal(payload)
 	return http.Post(url, "application/json", bytes.NewReader(body), w)
 }

internal/client/route_add_test.go

@@ -31,7 +31,6 @@ func TestSuccessOnCorrectRoute(t *testing.T) {
 		JSON(map[string]string{
 			"method":      "GET",
 			"url_pattern": "/hello",
-			"entrypoint":  "",
 			"command":     "echo Hello World | kapow set /response/body",
 		}).
 		Reply(http.StatusCreated).

internal/cmd/route.go

@@ -80,7 +80,7 @@ func init() {
 	// TODO: Add default values for flags and remove path flag
 	routeAddCmd.Flags().String("control-url", getEnv("KAPOW_CONTROL_URL", "http://localhost:8081"), "Kapow! control interface URL")
 	routeAddCmd.Flags().StringP("method", "X", "GET", "HTTP method to accept")
-	routeAddCmd.Flags().StringP("entrypoint", "e", "/bin/sh -c", "Command to execute")
+	routeAddCmd.Flags().StringP("entrypoint", "e", "", "Command to execute")
 	routeAddCmd.Flags().StringP("command", "c", "", "Command to pass to the shell")
 
 	var routeRemoveCmd = &cobra.Command{

internal/server/control/control.go

@@ -132,6 +132,10 @@ func addRoute(res http.ResponseWriter, req *http.Request) {
 		return
 	}
 
+	if route.Entrypoint == "" {
+		route.Entrypoint = defaultEntrypoint
+	}
+
 	route.ID = id.String()
 
 	created := funcAdd(route)

internal/server/control/entrypoint.go

@@ -0,0 +1,5 @@
+// +build !windows
+
+package control
+
+var defaultEntrypoint = "/bin/sh -c"

internal/server/control/entrypoint_windows.go

@@ -0,0 +1,3 @@
+package control
+
+var defaultEntrypoint = "cmd.exe /c"

internal/server/model/route.go

@@ -19,7 +19,7 @@ package model
 // Route contains the data needed to represent a Kapow! user route.
 type Route struct {
 	// ID is the unique identifier of the Route.
-	ID string `json:"id"`
+	ID string `json:"id,omitempty"`
 
 	// Method is the HTTP method that will match this Route.
 	Method string `json:"method"`
@@ -33,7 +33,7 @@ type Route struct {
 	//
 	// This string will be split according to the shell parsing rules to
 	// be passed as a list to exec.Command.
-	Entrypoint string `json:"entrypoint"`
+	Entrypoint string `json:"entrypoint,omitempty"`
 
 	// Command is the last argument to be passed to exec.Command when
 	// executing the Entrypoint
@@ -43,5 +43,5 @@ type Route struct {
 	// It is an output field, its value is ignored as input.
 	Index int `json:"index"`
 
-	Debug bool `json:"debug"`
+	Debug bool `json:"debug,omitempty"`
 }