Add support for --validate on chartify (#1960)

Apparently we needed to pass `--validate` on helm-template run by chartify when the targeted chart contains Capabilities.APIVersions in a chart template. Otherwise, you can never make such chart work with chartify, as at apply time helm template expressions that involved Capabilities.APIVersions are already nowhere.

go.mod

@@ -28,7 +28,7 @@ require (
 	github.com/spf13/cobra v1.1.1
 	github.com/tatsushid/go-prettytable v0.0.0-20141013043238-ed2d14c29939
 	github.com/urfave/cli v1.22.5
-	github.com/variantdev/chartify v0.8.9
+	github.com/variantdev/chartify v0.9.0
 	github.com/variantdev/dag v1.0.0
 	github.com/variantdev/vals v0.14.0
 	go.uber.org/multierr v1.6.0

go.sum

@@ -596,6 +596,8 @@ github.com/urfave/cli v1.22.5 h1:lNq9sAHXK2qfdI8W+GRItjCEkI+2oR4d+MEHy1CKXoU=
 github.com/urfave/cli v1.22.5/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
 github.com/variantdev/chartify v0.8.9 h1:kECyWario6UOShilDThKfuvk+FhXWjlFod/Cg/wTmVs=
 github.com/variantdev/chartify v0.8.9/go.mod h1:qF4XzQlkfH/6k2jAi1hLas+lK4zSCa8kY+r5JdmLA68=
+github.com/variantdev/chartify v0.9.0 h1:27Bh3RXqBYyev0Xa1JnfD/LWyZu3SL+iHr6ePMzHdMg=
+github.com/variantdev/chartify v0.9.0/go.mod h1:qF4XzQlkfH/6k2jAi1hLas+lK4zSCa8kY+r5JdmLA68=
 github.com/variantdev/dag v1.0.0 h1:7SFjATxHtrYV20P3tx53yNDBMegz6RT4jv8JPHqAHdM=
 github.com/variantdev/dag v1.0.0/go.mod h1:pH1TQsNSLj2uxMo9NNl9zdGy01Wtn+/2MT96BrKmVyE=
 github.com/variantdev/vals v0.14.0 h1:J+zX1DDLTQ35A198HChVkCwLfA/4OeKhSuZ5zjmgV0Q=

main.go

@@ -224,6 +224,11 @@ func main() {
 					Value: 0,
 					Usage: "maximum number of concurrent helm processes to run, 0 is unlimited",
 				},
+				cli.BoolFlag{
+					Name:  "validate",
+					Usage: "validate your manifests against the Kubernetes cluster you are currently pointing at. Note that this requiers access to a Kubernetes cluster to obtain information necessary for validating, like the list of available API versions",
+				},
+
 				cli.IntFlag{
 					Name:  "context",
 					Value: 0,
@@ -271,7 +276,7 @@ func main() {
 				},
 				cli.BoolFlag{
 					Name:  "validate",
-					Usage: "validate your manifests against the Kubernetes cluster you are currently pointing at",
+					Usage: "validate your manifests against the Kubernetes cluster you are currently pointing at. Note that this requiers access to a Kubernetes cluster to obtain information necessary for validating, like the list of available API versions",
 				},
 				cli.BoolFlag{
 					Name:  "include-crds",
@@ -445,6 +450,10 @@ func main() {
 					Value: 0,
 					Usage: "maximum number of concurrent helm processes to run, 0 is unlimited",
 				},
+				cli.BoolFlag{
+					Name:  "validate",
+					Usage: "validate your manifests against the Kubernetes cluster you are currently pointing at. Note that this requiers access to a Kubernetes cluster to obtain information necessary for validating, like the list of available API versions",
+				},
 				cli.IntFlag{
 					Name:  "context",
 					Value: 0,

pkg/app/app.go

@@ -172,6 +172,7 @@ func (a *App) Diff(c DiffConfigProvider) error {
 			SkipRepos:   c.SkipDeps(),
 			SkipDeps:    c.SkipDeps(),
 			IncludeCRDs: &includeCRDs,
+			Validate:    c.Validate(),
 		}, func() {
 			msg, matched, affected, errs = a.diff(run, c)
 		})
@@ -238,6 +239,7 @@ func (a *App) Template(c TemplateConfigProvider) error {
 			SkipDeps:      c.SkipDeps(),
 			IncludeCRDs:   &includeCRDs,
 			SkipCleanup:   c.SkipCleanup(),
+			Validate:      c.Validate(),
 		}, func() {
 			ok, errs = a.template(run, c)
 		})
@@ -392,6 +394,7 @@ func (a *App) Apply(c ApplyConfigProvider) error {
 			WaitForJobs: c.WaitForJobs(),
 			IncludeCRDs: &includeCRDs,
 			SkipCleanup: c.RetainValuesFiles() || c.SkipCleanup(),
+			Validate:    c.Validate(),
 		}, func() {
 			matched, updated, es := a.apply(run, c)
 

pkg/app/config.go

@@ -57,6 +57,7 @@ type ApplyConfigProvider interface {
 	DiffOutput() string
 
 	RetainValuesFiles() bool
+	Validate() bool
 	SkipCleanup() bool
 	SkipDiffOnInstall() bool
 
@@ -90,6 +91,7 @@ type DiffConfigProvider interface {
 
 	Values() []string
 	Set() []string
+	Validate() bool
 	SkipCRDs() bool
 	SkipDeps() bool
 

pkg/state/state.go

@@ -966,6 +966,9 @@ type ChartPrepareOptions struct {
 	SkipDeps      bool
 	SkipResolve   bool
 	SkipCleanup   bool
+	// Validate is a helm-3-only option. When it is set to true, it configures chartify to pass --validate to helm-template run by it.
+	// It's required when one of your chart relies on Capabilities.APIVersions in a template
+	Validate    bool
 	IncludeCRDs *bool
 	Wait        bool
 	WaitForJobs bool
@@ -1142,9 +1145,10 @@ func (st *HelmState) PrepareCharts(helm helmexec.Interface, dir string, concurre
 					if opts.IncludeCRDs != nil {
 						includeCRDs = *opts.IncludeCRDs
 					}
-
 					chartifyOpts.IncludeCRDs = includeCRDs
 
+					chartifyOpts.Validate = opts.Validate
+
 					out, err := c.Chartify(release.Name, chartPath, chartify.WithChartifyOpts(chartifyOpts))
 					if err != nil {
 						results <- &chartPrepareResult{err: err}