plugin: Allow routes content with @ prefix

This makes the command compatible with rpaasv1 plugin.

cmd/plugin/rpaasv2/cmd/routes.go

@@ -9,6 +9,8 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
+	"os"
+	"strings"
 
 	"github.com/olekukonko/tablewriter"
 	rpaasclient "github.com/tsuru/rpaas-operator/pkg/rpaas/client"
@@ -205,12 +207,9 @@ func runUpdateRoute(c *cli.Context) error {
 		return err
 	}
 
-	var content []byte
-	if contentFile := c.Path("content"); contentFile != "" {
-		content, err = ioutil.ReadFile(contentFile)
-		if err != nil {
-			return err
-		}
+	content, err := fetchContentFile(c)
+	if err != nil {
+		return err
 	}
 
 	args := rpaasclient.UpdateRouteArgs{
@@ -228,3 +227,17 @@ func runUpdateRoute(c *cli.Context) error {
 	fmt.Fprintf(c.App.Writer, "Route %q updated.\n", args.Path)
 	return nil
 }
+
+func fetchContentFile(c *cli.Context) ([]byte, error) {
+	contentFile := c.Path("content")
+	if contentFile == "" {
+		return nil, nil
+	}
+	content, err := ioutil.ReadFile(contentFile)
+	if os.IsNotExist(err) &&
+		strings.HasPrefix(contentFile, "@") {
+		return ioutil.ReadFile(strings.TrimPrefix(contentFile, "@"))
+	}
+
+	return content, err
+}

cmd/plugin/rpaasv2/cmd/routes_test.go

@@ -256,6 +256,22 @@ func TestUpdateRoute(t *testing.T) {
 				},
 			},
 		},
+		{
+			name:     "when using a custom NGINX config with @ prefixed file path",
+			args:     []string{"./rpaasv2", "routes", "update", "-i", "my-instance", "-p", "/custom/path", "-c", "@" + configFile.Name()},
+			expected: "Route \"/custom/path\" updated.\n",
+			client: &fake.FakeClient{
+				FakeUpdateRoute: func(args rpaasclient.UpdateRouteArgs) (*http.Response, error) {
+					expected := rpaasclient.UpdateRouteArgs{
+						Instance: "my-instance",
+						Path:     "/custom/path",
+						Content:  nginxConfig,
+					}
+					assert.Equal(t, expected, args)
+					return nil, nil
+				},
+			},
+		},
 	}
 
 	for _, tt := range tests {