Print additional columns for Release objects

crd/Release-crd.yaml

@@ -4,6 +4,17 @@ metadata:
   # name must match the spec fields below, and be in the form: <plural>.<group>
   name: releases.shipper.booking.com
 spec:
+  # additional columns to print for kubectl get command besides NAME and AGE
+  # and NAMESPACE (in case of passing --all-namespaces flag)
+  additionalPrinterColumns:
+  - JSONPath: .metadata.annotations.shipper\.booking\.com\/release\.clusters
+    description: The list of clusters where a release is supposed to be rolled out as per strategy.
+    name: Clusters
+    type: string
+  - JSONPath: .status.achievedStep.name
+    description: The current achieved step for a release as defined in the rollout strategy.
+    name: Step
+    type: string
   # group name to use for REST API: /apis/<group>/<version>
   group: shipper.booking.com
   # version name to use for REST API: /apis/<group>/<version>

pkg/crds/release.go

@@ -45,5 +45,19 @@ var Release = &apiextensionv1beta1.CustomResourceDefinition{
 				},
 			},
 		},
+		AdditionalPrinterColumns: []apiextensionv1beta1.CustomResourceColumnDefinition{
+			apiextensionv1beta1.CustomResourceColumnDefinition{
+				Name:        "Clusters",
+				Type:        "string",
+				Description: "The list of clusters where a release is supposed to be rolled out as per strategy.",
+				JSONPath:    ".metadata.annotations.shipper\\.booking\\.com\\/release\\.clusters",
+			},
+			apiextensionv1beta1.CustomResourceColumnDefinition{
+				Name:        "Step",
+				Type:        "string",
+				Description: "The current achieved step for a release as defined in the rollout strategy.",
+				JSONPath:    ".status.achievedStep.name",
+			},
+		},
 	},
 }