add secret and configmap generator plugins

pkg/target/configmaps_test.go

@@ -240,3 +240,31 @@ metadata:
   name: p2-com2-c4b8md75k9
 `)
 }
+
+func TestGeneratorPlugins(t *testing.T) {
+	th := NewKustTestHarness(t, "/app")
+	th.writeK("/app", `
+secretGenerator:
+- name: bob
+  kvSources:
+  - pluginType: testonly
+    name: testonly
+    args:
+    - FRUIT
+    - VEGETABLE
+`)
+	m, err := th.makeKustTarget().MakeCustomizedResMap()
+	if err != nil {
+		t.Fatalf("Err: %v", err)
+	}
+	th.assertActualEqualsExpected(m, `
+apiVersion: v1
+data:
+  k_FRUIT: dl9GUlVJVA==
+  k_VEGETABLE: dl9WRUdFVEFCTEU=
+kind: Secret
+metadata:
+  name: bob-cb9mhbh9gg
+type: Opaque
+`)
+}

pkg/types/kustomization.go

@@ -189,6 +189,9 @@ type GeneratorArgs struct {
 
 	// DataSources for the generator.
 	DataSources `json:",inline,omitempty" yaml:",inline,omitempty"`
+
+	// KVSources for the generator.
+	KVSources []KVSource `json:",inline,omitempty" yaml:",inline,omitempty"`
 }
 
 // ConfigMapArgs contains the metadata of how to generate a configmap.
@@ -248,3 +251,10 @@ type GeneratorOptions struct {
 	// resource contents.
 	DisableNameSuffixHash bool `json:"disableNameSuffixHash,omitempty" yaml:"disableNameSuffixHash,omitempty"`
 }
+
+// KVSource represents a KV plugin backend.
+type KVSource struct {
+	PluginType string   `json:"pluginType,omitempty" yaml:"pluginType,omitempty"`
+	Name       string   `json:"name,omitempty" yaml:"name,omitempty"`
+	Args       []string `json:"args,omitempty" yaml:"args,omitempty"`
+}