Implement --diff-args (#959)

Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>

pkg/config/apply.go

@@ -34,6 +34,8 @@ type ApplyOptions struct {
 	IncludeTransitiveNeeds bool
 	// SkipDiffOnInstall is true if the diff should be skipped on install
 	SkipDiffOnInstall bool
+	// DiffArgs is the list of arguments to pass to the helm-diff.
+	DiffArgs string
 	// IncludeTests is true if the tests should be included
 	IncludeTests bool
 	// Suppress is true if the output should be suppressed
@@ -155,6 +157,11 @@ func (a *ApplyImpl) SkipDiffOnInstall() bool {
 	return a.ApplyOptions.SkipDiffOnInstall
 }
 
+// DiffArgs is the list of arguments to pass to helm-diff.
+func (a *ApplyImpl) DiffArgs() string {
+	return a.ApplyOptions.DiffArgs
+}
+
 // SkipNeeds returns the skip needs.
 func (a *ApplyImpl) SkipNeeds() bool {
 	if !a.IncludeNeeds() {

pkg/config/diff.go

@@ -42,6 +42,8 @@ type DiffOptions struct {
 	ResetValues bool
 	// Propagate '--post-renderer' to helmv3 template and helm install
 	PostRenderer string
+	// DiffArgs is the list of arguments to pass to helm-diff.
+	DiffArgs string
 }
 
 // NewDiffOptions creates a new Apply
@@ -147,6 +149,11 @@ func (t *DiffImpl) SkipDiffOnInstall() bool {
 	return t.DiffOptions.SkipDiffOnInstall
 }
 
+// DiffArgs returns the list of arguments to pass to helm-diff.
+func (t *DiffImpl) DiffArgs() string {
+	return t.DiffOptions.DiffArgs
+}
+
 // Suppress returns the suppress
 func (t *DiffImpl) Suppress() []string {
 	return t.DiffOptions.Suppress