Export LoadFrom

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <[email protected]>

pkg/helm/io.go

@@ -29,6 +29,19 @@ func Load(yamlPath string) (ValuesMap, error) {
 	return values, nil
 }
 
+// LoadFrom loads a values.yaml snippet from memory and
+// returns a ValuesMap with the keys and values from the YAML
+func LoadFrom(yamlText string) (ValuesMap, error) {
+
+	values := ValuesMap{}
+
+	if err := yaml.Unmarshal([]byte(yamlText), &values); err != nil {
+		return nil, fmt.Errorf("unable to parse %s, error: %s", yamlText, err)
+	}
+
+	return values, nil
+}
+
 // ReplaceValuesInHelmValuesFile takes a values.yaml file and replaces values in it with the values provided in the map
 // and returns the updated values.yaml file as a string
 func ReplaceValuesInHelmValuesFile(values map[string]string, yamlPath string) (string, error) {

pkg/helm/io_test.go

@@ -0,0 +1,23 @@
+package helm
+
+import (
+	"testing"
+)
+
+func Test_LoadFrom(t *testing.T) {
+	yamlText := `faas-netes:
+  image: openfaas/faas-netes:0.1.0
+`
+
+	imageWant := `openfaas/faas-netes:0.1.0`
+
+	values, err := LoadFrom(yamlText)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	imageGot := values["faas-netes"].(ValuesMap)["image"]
+	if imageGot != imageWant {
+		t.Fatalf("got %q, want %q", imageGot, imageWant)
+	}
+}