feat(ws): add Workspace and WorkspaceKind CRD scaffolds (#6)

* feat(ws): add `Workspace` and `WorkspaceKind` CRD scaffolds

Co-authored-by: Mathew Wicks <5735406+thesuperzapper@users.noreply.github.com>

Signed-off-by: Jiri Daněk <jdanek@redhat.com>

* fixup, regenerate WOrkspaceKind to be cluster scope

Signed-off-by: Jiri Daněk <jdanek@redhat.com>

* fixes to crd spec

Signed-off-by: Mathew Wicks <5735406+thesuperzapper@users.noreply.github.com>

* updates to CRD spec

Signed-off-by: Mathew Wicks <5735406+thesuperzapper@users.noreply.github.com>

---------

Signed-off-by: Jiri Daněk <jdanek@redhat.com>
Signed-off-by: Mathew Wicks <5735406+thesuperzapper@users.noreply.github.com>
Co-authored-by: Mathew Wicks <5735406+thesuperzapper@users.noreply.github.com>

workspaces/controller/PROJECT

@@ -18,7 +18,6 @@ resources:
   version: v1beta1
 - api:
     crdVersion: v1
-    namespaced: true
   controller: true
   domain: kubeflow.org
   kind: WorkspaceKind

workspaces/controller/api/v1beta1/workspace_types.go

@@ -20,25 +20,60 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
-// EDIT THIS FILE!  THIS IS SCAFFOLDING FOR YOU TO OWN!
+// Important: Run "make" to regenerate code after modifying this file
 // NOTE: json tags are required.  Any new fields you add must have json tags for the fields to be serialized.
 
 // WorkspaceSpec defines the desired state of Workspace
 type WorkspaceSpec struct {
-	// INSERT ADDITIONAL SPEC FIELDS - desired state of cluster
-	// Important: Run "make" to regenerate code after modifying this file
 
-	// Foo is an example field of Workspace. Edit workspace_types.go to remove/update
-	Foo string `json:"foo,omitempty"`
+	// if the workspace should be paused (no pods running)
+	//+kubebuilder:default=false
+	//+kubebuilder:validation:Optional
+	Paused bool `json:"paused,omitempty"`
+
+	// the WorkspaceKind to use
+	//+kubebuilder:validation:Required
+	//+kubebuilder:validation:MinLength:=2
+	//+kubebuilder:validation:MaxLength:=63
+	//+kubebuilder:validation:Pattern:=^[a-z0-9][-a-z0-9]*[a-z0-9]$
+	//+kubebuilder:validation:XValidation:rule="self == oldSelf",message="Workspace 'kind' is immutable"
+	//+kubebuilder:example="jupyter-lab"
+	Kind string `json:"kind"`
+
+	// options for "podTemplate"-type WorkspaceKinds
+	PodTemplate PodTemplate `json:"podTemplate"`
 }
 
 // WorkspaceStatus defines the observed state of Workspace
 type WorkspaceStatus struct {
-	// INSERT ADDITIONAL STATUS FIELD - define observed state of cluster
-	// Important: Run "make" to regenerate code after modifying this file
+
+	// information populated by activity probes, used to determine when to cull
+	Activity Activity `json:"activity"`
+
+	// the time when the Workspace was paused, 0 if the Workspace is not paused
+	//+kubebuilder:example=1704067200
+	PauseTime int64 `json:"pauseTime"`
+
+	// if the current Pod does not reflect the current "desired" state (after redirects)
+	//+kubebuilder:example=false
+	PendingRestart bool `json:"pendingRestart"`
+
+	// actual "target" podTemplateOptions, taking into account redirects
+	PodTemplateOptions Options `json:"podTemplateOptions"`
+
+	// the current state of the Workspace
+	//+kubebuilder:validation:Enum:={"Running","Terminating","Paused","Pending","Error","Unknown"}
+	//+kubebuilder:example="Running"
+	State string `json:"state"`
+
+	// a human-readable message about the state of the Workspace
+	//  WARNING: this field is NOT FOR MACHINE USE, subject to change without notice
+	//+kubebuilder:example="Pod is not ready"
+	StateMessage string `json:"stateMessage"`
 }
 
 //+kubebuilder:object:root=true
+//+kubebuilder:printcolumn:name="State",type="string",JSONPath=".status.state",description="The current state of the Workspace"
 //+kubebuilder:subresource:status
 
 // Workspace is the Schema for the workspaces API
@@ -62,3 +97,74 @@ type WorkspaceList struct {
 func init() {
 	SchemeBuilder.Register(&Workspace{}, &WorkspaceList{})
 }
+
+type PodTemplate struct {
+	// metadata to be applied to the Pod resource
+	//+kubebuilder:validation:Optional
+	PodMetadata PodMetadata `json:"podMetadata,omitempty"`
+
+	// volume configs
+	Volumes PodVolumes `json:"volumes"`
+
+	// spawner options, these are the user-selected options from the Workspace Spawner UI which determine the PodSpec of the Workspace Pod
+	Options Options `json:"options"`
+}
+
+type PodMetadata struct {
+	// labels to be applied to the Pod resource
+	//+kubebuilder:validation:Optional
+	Labels map[string]string `json:"labels,omitempty"`
+
+	// annotations to be applied to the Pod resource
+	//+kubebuilder:validation:Optional
+	Annotations map[string]string `json:"annotations,omitempty"`
+}
+
+type PodVolumes struct {
+	// A PVC to mount as the home directory.
+	// This PVC must already exist in the Namespace
+	// This PVC must be RWX (ReadWriteMany, ReadWriteOnce)
+	// Mount path is defined in the WorkspaceKind under `spec.podTemplate.volumeMounts.home`
+	//+kubebuilder:validation:MinLength:=2
+	//+kubebuilder:validation:MaxLength:=63
+	//+kubebuilder:validation:Pattern:=^[a-z0-9][-a-z0-9]*[a-z0-9]$
+	//+kubebuilder:example="my-home-pvc"
+	Home string `json:"home"`
+
+	// additional data PVCs to mount, these PVCs must already exist in the Namespace
+	//+kubebuilder:validation:Optional
+	Data []PodVolumeMount `json:"data,omitempty"`
+}
+
+type PodVolumeMount struct {
+	//+kubebuilder:validation:MinLength:=2
+	//+kubebuilder:validation:MaxLength:=63
+	//+kubebuilder:validation:Pattern:=^[a-z0-9][-a-z0-9]*[a-z0-9]$
+	//+kubebuilder:example="my-data-pvc"
+	Name string `json:"name"`
+
+	//+kubebuilder:validation:MinLength:=2
+	//+kubebuilder:validation:MaxLength:=4096
+	//+kubebuilder:validation:Pattern:=^/[^/].*$
+	//+kubebuilder:example="/data/my-data"
+	MountPath string `json:"mountPath"`
+}
+
+type Activity struct {
+	//+kubebuilder:example=1704067200
+	LastActivity int64 `json:"lastActivity"`
+
+	//+kubebuilder:example=1704067200
+	LastUpdate int64 `json:"lastUpdate"`
+}
+
+type Options struct {
+	// the id of an image option
+	//  - options are defined in WorkspaceKind under
+	//    `spec.podTemplate.options.imageConfig.values[]`
+	//+kubebuilder:example="jupyter_scipy_170"
+	ImageConfig string `json:"imageConfig"`
+
+	//+kubebuilder:example="big_gpu"
+	PodConfig string `json:"podConfig"`
+}