kapp will show complete yaml which is generated after applying rebase rules and others changes

[kumaritanushree]

Fix for issue : #488

Output in different use cases will look like :

Creating a new app:

$./carvel-kapp/kapp deploy -a app1 -f test-488-yml-output/kapp-dry-run.yml  --diff-changes-yaml
Target cluster 'https://127.0.0.1:33907' (nodes: minikube)

---
# create: configmap/simple-cm (v1) namespace: default
apiVersion: v1
data:
  hello_msg: good-morning-blr
kind: ConfigMap
metadata:
  annotation:
    kapp.k14s.io/exists: ""
  labels:
    kapp.k14s.io/app: "1656585353984253000"
    kapp.k14s.io/association: v1.2a776d2dcf640bae095c987623b4a235
  name: simple-cm
  namespace: default

---
# create: deployment/simple-app1 (apps/v1) namespace: default
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    kapp.k14s.io/app: "1656585353984253000"
    kapp.k14s.io/association: v1.2604464f207bf1e113ba69715d597ce6
  name: simple-app1
  namespace: default
spec:
  replicas: 2
  selector:
    matchLabels:
      kapp.k14s.io/app: "1656585353984253000"
      simple-app: ""
  template:
    metadata:
      labels:
        kapp.k14s.io/app: "1656585353984253000"
        kapp.k14s.io/association: v1.2604464f207bf1e113ba69715d597ce6
        simple-app: ""
    spec:
      containers:
      - env:
        - name: HELLO_MSG
          value: stranger
        image: nginx:1.21.6
        name: simple-app
status:
  conditions:
  - lastTransitionTime: "2022-05-12T03:35:07Z"
    lastUpdateTime: "2022-05-12T03:35:07Z"
    message: Deployment has minimum availability.
    reason: MinimumReplicasAvailable
    status: "True"
    type: Available

---
# create: secret/mysecret (v1) namespace: default
apiVersion: v1
data:
  password: <-- value not shown (#1)
  username: <-- value not shown (#2)
kind: Secret
metadata:
  labels:
    kapp.k14s.io/app: "1656585353984253000"
    kapp.k14s.io/association: v1.000230f224f6e1124fe556ed5f0f691f
  name: mysecret
  namespace: default

Update secret, deployment and delete ConfigMap and re-deploy app:

---
# update: deployment/simple-app1 (apps/v1) namespace: default
apiVersion: apps/v1
kind: Deployment
metadata:
  annotations:
    deployment.kubernetes.io/revision: "1"
  creationTimestamp: "2022-06-20T19:36:16Z"
  generation: 2
  labels:
    kapp.k14s.io/app: "1656585353984253000"
    kapp.k14s.io/association: v1.2604464f207bf1e113ba69715d597ce6
  name: simple-app1
  namespace: default
  resourceVersion: "289922"
  uid: 63bb6913-036d-4237-969d-85d51bb898a3
spec:
  replicas: 1
  selector:
    matchLabels:
      kapp.k14s.io/app: "1656585353984253000"
      simple-app: ""
  template:
    metadata:
      labels:
        kapp.k14s.io/app: "1656585353984253000"
        kapp.k14s.io/association: v1.2604464f207bf1e113ba69715d597ce6
        simple-app: ""
    spec:
      containers:
      - env:
        - name: HELLO_MSG
          value: stranger
        image: nginx:1.21.6
        name: simple-app
status:
  availableReplicas: 2
  conditions:
  - lastTransitionTime: "2022-06-20T19:36:18Z"
    lastUpdateTime: "2022-06-20T19:36:18Z"
    message: Deployment has minimum availability.
    reason: MinimumReplicasAvailable
    status: "True"
    type: Available
  - lastTransitionTime: "2022-06-20T19:36:16Z"
    lastUpdateTime: "2022-06-20T19:36:18Z"
    message: ReplicaSet "simple-app1-5b8bc88d7b" has successfully progressed.
    reason: NewReplicaSetAvailable
    status: "True"
    type: Progressing
  observedGeneration: 2
  readyReplicas: 2
  replicas: 2
  updatedReplicas: 2

---
# update: secret/mysecret (v1) namespace: default
apiVersion: v1
data:
  password: <-- value not shown (#1)
  username: <-- value not shown (#2)
kind: Secret
metadata:
  creationTimestamp: "2022-06-20T19:36:16Z"
  labels:
    kapp.k14s.io/app: "1656585353984253000"
    kapp.k14s.io/association: v1.000230f224f6e1124fe556ed5f0f691f
  name: mysecret
  namespace: default
  resourceVersion: "289883"
  uid: 675c44e3-7c93-4236-b900-b56a12f169b4

---
# delete: configmap/simple-cm (v1) namespace: default

Resource with exists annotation

---
# exists: namespace/ns-sample (v1) cluster 

---
# create: configmap/configmap-sample (v1) namespace: ns-sample
apiVersion: v1
data:
  player_initial_lives: "33"
kind: ConfigMap
metadata:
  labels:
    kapp.k14s.io/app: "1655295085164557000"
    kapp.k14s.io/association: v1.216aa44a56073ff0ff55bfae60148595
  name: configmap-sample
  namespace: ns-sample

Succeeded

Note: kapp will print nothing in case of operation = noop

Deleting app:

./carvel-kapp/kapp delete -a app --diff-changes-yaml
Target cluster 'https://127.0.0.1:64899' (nodes: minikube)

---
# delete: deployment/simple-app1 (apps/v1) namespace: default

---
# delete: configmap/simple-cm (v1) namespace: default


Changes

Namespace  Name                          Kind        Age  Op      Op st.  Wait to  Rs  Ri  
default    simple-app1                   Deployment  3h   delete  -       delete   ok  -  
^          simple-app1-7f77fd9697        ReplicaSet  3h   -       -       delete   ok  -  
^          simple-app1-7f77fd9697-hdvg2  Pod         3h   -       -       delete   ok  -  
^          simple-cm                     ConfigMap   3h   delete  -       delete   ok  -  

Op:      0 create, 2 delete, 0 update, 2 noop, 0 exists
Wait to: 0 reconcile, 4 delete, 0 noop

[100mik]

@kumaritanushree I think it will be super helpful if you put down the final output here 🤔

[kumaritanushree]

@100mik Thank you for reminding, I updated the output in description. Thanks

[praveenrewar]

LGTM!

[sethiyash]

Looks Good.