feat(main): Support specifying kubectl args in ResourceSets

context/context.go

@@ -28,6 +28,9 @@ type ResourceSet struct {
 	// Values to include when interpolating resources from this resource set.
 	Values map[string]interface{} `json:"values"`
 
+	// Args to pass on to kubectl for this resource set.
+	Args []string `json:"args"`
+
 	// Nested resource sets to include
 	Include []ResourceSet `json:"include"`
 

context/context_test.go

@@ -54,6 +54,42 @@ func TestLoadFlatContextFromFile(t *testing.T) {
 	}
 }
 
+func TestLoadContextWithArgs(t *testing.T) {
+	ctx, err := LoadContext("testdata/flat-with-args-test.yaml", &noExplicitVars)
+
+	if err != nil {
+		t.Error(err)
+		t.Fail()
+	}
+
+	expected := Context{
+		Name: "k8s.prod.mydomain.com",
+		ResourceSets: []ResourceSet{
+			{
+				Name:   "some-api",
+				Path:   "some-api",
+				Values: make(map[string]interface{}, 0),
+				Args: []string{
+					"--as=some-user",
+					"--as-group=hello:world",
+					"--as-banana",
+					"true",
+				},
+				Include: nil,
+				Parent:  "",
+			},
+		},
+		BaseDir:      "testdata",
+		ImportedVars: make(map[string]interface{}, 0),
+		ExplicitVars: make(map[string]interface{}, 0),
+	}
+
+	if !reflect.DeepEqual(*ctx, expected) {
+		t.Error("Loaded context and expected context did not match")
+		t.Fail()
+	}
+}
+
 func TestLoadContextWithResourceSetCollections(t *testing.T) {
 	ctx, err := LoadContext("testdata/collections-test.yaml", &noExplicitVars)
 

context/testdata/flat-with-args-test.yaml

@@ -0,0 +1,9 @@
+---
+context: k8s.prod.mydomain.com
+include:
+  - name: some-api
+    args:
+      - --as=some-user
+      - --as-group=hello:world
+      - --as-banana
+      - "true"

docs/resource-sets.md

@@ -16,6 +16,7 @@ Technically a resource set is simply a folder with a few YAML and/or JSON templa
         - [`name`](#name)
         - [`path`](#path)
         - [`values`](#values)
+        - [`args`](#args)
         - [`include`](#include)
     - [Multiple includes](#multiple-includes)
     - [Nesting resource sets](#nesting-resource-sets)
@@ -81,6 +82,12 @@ The `values` field specifies key/values pairs of variables that should be availa
 
 This field is **optional**.
 
+### `args`
+
+The `args` field specifies a list of arguments that should be passed to `kubectl`.
+
+This field is **optional**.
+
 ### `include`
 
 The `include` field specifies additional resource sets that should be included and that should inherit the

main.go

@@ -199,7 +199,7 @@ func loadContextAndResources(file *string) (*context.Context, *[]templater.Rende
 }
 
 func runKubectlWithResources(c *context.Context, kubectlArgs *[]string, resourceSets *[]templater.RenderedResourceSet) error {
-	args := append(*kubectlArgs, fmt.Sprintf("--context=%s", c.Name))
+	argsWithContext := append(*kubectlArgs, fmt.Sprintf("--context=%s", c.Name))
 
 	for _, rs := range *resourceSets {
 		if len(rs.Resources) == 0 {
@@ -207,7 +207,9 @@ func runKubectlWithResources(c *context.Context, kubectlArgs *[]string, resource
 			continue
 		}
 
-		kubectl := exec.Command(*kubectlBin, args...)
+		argsWithResourceSetArgs := append(argsWithContext, rs.Args...)
+
+		kubectl := exec.Command(*kubectlBin, argsWithResourceSetArgs...)
 
 		stdin, err := kubectl.StdinPipe()
 		if err != nil {

templater/templater.go

@@ -35,6 +35,7 @@ type RenderedResource struct {
 type RenderedResourceSet struct {
 	Name      string
 	Resources []RenderedResource
+	Args      []string
 }
 
 func LoadAndApplyTemplates(include *[]string, exclude *[]string, c *context.Context) ([]RenderedResourceSet, error) {
@@ -94,6 +95,7 @@ func processResourceSet(ctx *context.Context, rs *context.ResourceSet) (*Rendere
 	return &RenderedResourceSet{
 		Name:      rs.Name,
 		Resources: resources,
+		Args:      rs.Args,
 	}, nil
 }