Merge pull request helmfile#88 from chubchubsancho/validate_manifest_…

…on_sync

feat: allow --validate on sync command

main.go

@@ -441,6 +441,10 @@ func main() {
 					Name:  "include-transitive-needs",
 					Usage: `like --include-needs, but also includes transitive needs (needs of needs). Does nothing when when --selector/-l flag is not provided. Overrides exclusions of other selectors and conditions.`,
 				},
+				cli.BoolFlag{
+					Name:  "validate",
+					Usage: `ADVANCED CONFIGURATION: When sync is going to involve helm-template as a part of the "chartify" process, it might fail due to missing .Capabilities. This flag makes instructs helmfile to pass --validate to helm-template so it populates .Capabilities and validates 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:  "wait",
 					Usage: `Override helmDefaults.wait setting "helm upgrade --install --wait"`,

pkg/app/app.go

@@ -363,6 +363,7 @@ func (a *App) Sync(c SyncConfigProvider) error {
 			WaitForJobs:            c.WaitForJobs(),
 			IncludeCRDs:            &includeCRDs,
 			IncludeTransitiveNeeds: c.IncludeTransitiveNeeds(),
+			Validate:               c.Validate(),
 		}, func() {
 			ok, errs = a.sync(run, c)
 		})

pkg/app/config.go

@@ -85,6 +85,8 @@ type SyncConfigProvider interface {
 	Wait() bool
 	WaitForJobs() bool
 
+	Validate() bool
+
 	SkipNeeds() bool
 	IncludeNeeds() bool
 	IncludeTransitiveNeeds() bool