fix (pkg/chartutil): correctly parse input values for ProcessRequirementsEnabled

Fixes a bug where tags and conditions specified in values.yaml were not being respeceted, causing incorrect loading of subcharts.

Closes #2139

pkg/chartutil/requirements.go

@@ -236,10 +236,15 @@ func ProcessRequirementsEnabled(c *chart.Chart, v *chart.Config) error {
 	if err != nil {
 		return err
 	}
+	// convert our values back into config
+	yvals, err := cvals.YAML()
+	if err != nil {
+		return err
+	}
+	cc := chart.Config{Raw: yvals}
 	// flag dependencies as enabled/disabled
 	ProcessRequirementsTags(reqs, cvals)
 	ProcessRequirementsConditions(reqs, cvals)
-
 	// make a map of charts to remove
 	rm := map[string]bool{}
 	for _, r := range reqs.Dependencies {
@@ -259,7 +264,7 @@ func ProcessRequirementsEnabled(c *chart.Chart, v *chart.Config) error {
 	}
 	// recursively call self to process sub dependencies
 	for _, t := range cd {
-		err := ProcessRequirementsEnabled(t, v)
+		err := ProcessRequirementsEnabled(t, &cc)
 		// if its not just missing requirements file, return error
 		if nerr, ok := err.(ErrNoRequirementsFile); !ok && err != nil {
 			return nerr

pkg/chartutil/requirements_test.go

@@ -74,15 +74,16 @@ func TestRequirementsTagsEnabledL1(t *testing.T) {
 
 	verifyRequirementsEnabled(t, c, v, e)
 }
+
 func TestRequirementsTagsDisabledL2(t *testing.T) {
 	c, err := Load("testdata/subpop")
 	if err != nil {
 		t.Fatalf("Failed to load testdata: %s", err)
 	}
-	// tags disabling only children
+	// tags disabling only children, children still enabled since tag front-end=true in values.yaml
 	v := &chart.Config{Raw: "tags:\n  subcharta: false\n\n  subchartb: false\n"}
 	// expected charts including duplicates in alphanumeric order
-	e := []string{"parentchart", "subchart1"}
+	e := []string{"parentchart", "subchart1", "subcharta", "subchartb"}
 
 	verifyRequirementsEnabled(t, c, v, e)
 }
@@ -115,10 +116,10 @@ func TestRequirementsConditionsEnabledL1Both(t *testing.T) {
 	if err != nil {
 		t.Fatalf("Failed to load testdata: %s", err)
 	}
-	// conditions enabling the parent charts, effectively enabling children
+	// conditions enabling the parent charts, but back-end (b, c) is still disabled via values.yaml
 	v := &chart.Config{Raw: "subchart1:\n  enabled: true\nsubchart2:\n  enabled: true\n"}
 	// expected charts including duplicates in alphanumeric order
-	e := []string{"parentchart", "subchart1", "subchart2", "subcharta", "subchartb", "subchartb", "subchartc"}
+	e := []string{"parentchart", "subchart1", "subchart2", "subcharta", "subchartb"}
 
 	verifyRequirementsEnabled(t, c, v, e)
 }