feat: set-namespace without kyaml/rnode dependencies (#769)

examples/set-namespace-imperative/.expected/diff.patch

@@ -1,16 +1,8 @@
 diff --git a/app.yaml b/app.yaml
-index 53c70b1..15a02f9 100644
+index 1f8aeee..33e42da 100644
 --- a/app.yaml
 +++ b/app.yaml
-@@ -2,6 +2,7 @@ apiVersion: v1
- kind: ConfigMap
- metadata:
-   name: the-map
-+  namespace: example-ns
- data:
-   some-key: some-value
- ---
-@@ -9,7 +10,7 @@ apiVersion: v1
+@@ -9,7 +9,7 @@ apiVersion: v1
  kind: Service
  metadata:
    name: the-service
@@ -19,9 +11,9 @@ index 53c70b1..15a02f9 100644
  spec:
    ports:
      - name: etcd-server-ssl
-@@ -21,4 +22,4 @@ spec:
+@@ -21,4 +21,4 @@ spec:
  apiVersion: v1
  kind: Namespace
  metadata:
--  name: old-name
+-  name: example
 +  name: example-ns

examples/set-namespace-imperative/app.yaml

@@ -21,4 +21,4 @@ spec:
 apiVersion: v1
 kind: Namespace
 metadata:
-  name: old-name
+  name: example

examples/set-namespace-simple/.expected/diff.patch

@@ -1,27 +1,43 @@
 diff --git a/resources.yaml b/resources.yaml
-index 468897a..8d5a446 100644
+index 85885ac..f93e6a4 100644
 --- a/resources.yaml
 +++ b/resources.yaml
-@@ -2,6 +2,7 @@ apiVersion: v1
- kind: ConfigMap
- metadata:
-   name: the-map
-+  namespace: example-ns
- data:
-   some-key: some-value
- ---
-@@ -9,7 +10,7 @@ apiVersion: v1
+@@ -2,12 +2,12 @@ apiVersion: v1
  kind: Service
  metadata:
    name: the-service
--  namespace: the-namespace
+-  namespace: example
 +  namespace: example-ns
- spec:
-   ports:
-     - name: etcd-server-ssl
-@@ -22,4 +23,4 @@ spec:
+ ---
  apiVersion: v1
  kind: Namespace
  metadata:
--  name: old-name
+-  name: example
 +  name: example-ns
+ ---
+ apiVersion: apiextensions.k8s.io/v1
+ kind: CustomResourceDefinition
+@@ -20,7 +20,7 @@ spec:
+       clientConfig:
+         service:
+           name: crd-svc
+-          namespace: example
++          namespace: example-ns
+ ---
+ apiVersion: apiregistration.k8s.io/v1
+ kind: APIService
+@@ -29,7 +29,7 @@ metadata:
+ spec:
+   service:
+     name: api-svc
+-    namespace: example
++    namespace: example-ns
+ ---
+ apiVersion: rbac.authorization.k8s.io/v1
+ kind: ClusterRoleBinding
+@@ -38,4 +38,4 @@ metadata:
+ subjects:
+   - kind: ServiceAccount
+     name: default
+-    namespace: example
++    namespace: example-ns

examples/set-namespace-simple/README.md

@@ -2,9 +2,8 @@
 
 ### Overview
 
-This example demonstrates how to declaratively run [`set-namespace`] function
-to adds or replaces the `.metadata.namespace` field on all resources except for
-those known to be cluster-scoped.
+This example demonstrates how to run [`set-namespace`] function
+to replace the  `namespace` resource type in a variety of KRM resources.
 
 ### Fetch the example package
 
@@ -42,6 +41,6 @@ $ kpt fn render set-namespace-simple
 
 ### Expected result
 
-Check all resources have `metadata.namespace` set to `example-ns`:
+Check all resources have `metadata.namespace` set to `example-ns`
 
 [`set-namespace`]: https://catalog.kpt.dev/set-namespace/v0.1/

examples/set-namespace-simple/resources.yaml

@@ -1,25 +1,41 @@
 apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: the-map
-data:
-  some-key: some-value
----
-apiVersion: v1
 kind: Service
 metadata:
   name: the-service
-  namespace: the-namespace
-spec:
-  ports:
-    - name: etcd-server-ssl
-      port: 2380
-    - name: etcd-client-ssl
-      port: 2379
-  clusterIP: None
-  publishNotReadyAddresses: true
+  namespace: example
 ---
 apiVersion: v1
 kind: Namespace
 metadata:
-  name: old-name
+  name: example
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  name: the-crd
+spec:
+  conversion:
+    strategy: Webhook
+    webhook:
+      clientConfig:
+        service:
+          name: crd-svc
+          namespace: example
+---
+apiVersion: apiregistration.k8s.io/v1
+kind: APIService
+metadata:
+  name: the-api-service
+spec:
+  service:
+    name: api-svc
+    namespace: example
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: crb1
+subjects:
+  - kind: ServiceAccount
+    name: default
+    namespace: example