Update to a Claims based flow

Signed-off-by: Jared Watts <[email protected]>

README.md

@@ -52,7 +52,7 @@ kubectl apply -f composition.yaml
 
 Now we are ready to create a compute instance:
 ```
-kubectl apply -f xr.yaml
+kubectl apply -f claim.yaml
 ```
 
 Since we have provided an old non-current generation instance type, we expect the function to return an error and refuse to create the instance:
@@ -63,11 +63,11 @@ kubectl describe compute.example.crossplane.io/dev-instance
 
 Let's update the instance type to a value that is current generation (`t3.micro`) and try again:
 ```
-# edit xr.yaml to change instanceType to t3.micro, then:
-kubectl apply -f xr.yaml
+# edit claim.yaml to change instanceType to t3.micro, then:
+kubectl apply -f claim.yaml
 ```
 
-Now we should be using a current generation instance type, let's examine the XR again:
+Now we should be using a current generation instance type, let's examine the claim again:
 ```
 crossplane beta trace compute.example.crossplane.io/dev-instance -o wide
 ```
@@ -86,9 +86,9 @@ Now we have seen how to use credentials/secrets in your composition functions! 
 
 ## Clean-up
 
-Make sure to clean-up the EC2 instance by deleting the XR:
+Make sure to clean-up the EC2 instance by deleting the claim:
 ```
-kubectl delete -f xr.yaml
+kubectl delete -f claim.yaml
 kubectl get instance.ec2
 ```
 

example/claim.yaml

@@ -0,0 +1,6 @@
+apiVersion: example.crossplane.io/v1alpha1
+kind: Compute
+metadata:
+  name: dev-instance
+spec:
+  instanceType: t1.micro

example/composition.yaml

@@ -5,7 +5,7 @@ metadata:
 spec:
   compositeTypeRef:
     apiVersion: example.crossplane.io/v1alpha1
-    kind: Compute
+    kind: XCompute
   mode: Pipeline
   pipeline:
   - step: create-resources

example/definition.yaml

@@ -1,10 +1,13 @@
 apiVersion: apiextensions.crossplane.io/v1
 kind: CompositeResourceDefinition
 metadata:
- name: computes.example.crossplane.io
+ name: xcomputes.example.crossplane.io
 spec:
   group: example.crossplane.io
   names:
+    kind: XCompute
+    plural: xcomputes
+  claimNames:
     kind: Compute
     plural: computes
   versions:

example/xr.yaml

@@ -1,5 +1,5 @@
 apiVersion: example.crossplane.io/v1alpha1
-kind: Compute
+kind: XCompute
 metadata:
   name: dev-instance
 spec: