recreate app command

api/models/manifest.go

@@ -73,6 +73,22 @@ func (m Manifest) EntryNames() []string {
 	return names
 }
 
+func (m Manifest) Formation() (string, error) {
+	data, err := buildTemplate("app", "app", m)
+
+	if err != nil {
+		return "", err
+	}
+
+	pretty, err := prettyJson(string(data))
+
+	if err != nil {
+		return "", err
+	}
+
+	return pretty, nil
+}
+
 func (m Manifest) HasPorts() bool {
 	if len(m) == 0 {
 		return true // special case to pre-initialize ELB at app create

api/models/release.go

@@ -235,13 +235,7 @@ func (r *Release) Formation() (string, error) {
 		return "", err
 	}
 
-	data, err := buildTemplate("app", "app", manifest)
-
-	if err != nil {
-		return "", err
-	}
-
-	return string(data), nil
+	return manifest.Formation()
 }
 
 func releasesTable(app string) string {

cmd/app/Makefile

@@ -0,0 +1,7 @@
+.PHONY: all test
+
+all: test
+
+test:
+	go get -t ./...
+	go test -v -cover ./...

cmd/app/main.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+
+	"github.com/convox/rack/api/models"
+)
+
+func die(err error) {
+	fmt.Fprintf(os.Stderr, "ERROR: %s\n", err.Error())
+	os.Exit(1)
+}
+
+func main() {
+	var manifest models.Manifest
+
+	if stat, _ := os.Stdin.Stat(); stat.Mode()&os.ModeCharDevice == 0 {
+		data, err := ioutil.ReadAll(os.Stdin)
+
+		if err != nil {
+			die(err)
+		}
+
+		manifest, err = models.LoadManifest(string(data))
+
+		if err != nil {
+			die(err)
+		}
+	}
+
+	out, err := manifest.Formation()
+
+	if err != nil {
+		die(err)
+	}
+
+	fmt.Println(out)
+}