johnliu55tw / BuildingRestfulApiUsingK8s

Building RESTful API using Kuberenetes

Building RESTful API using Kubernetes

Init kubebuilder projects

$ kubebuilder init --domain johnliu55.tw --repo johnliu55.tw/todo

Create API using kubebuilder

$ kubebuilder create api --group todo --version v1 --kind Todo

• Create Resource: y
• Create Controller: y

Update CRD scheme

Edit todo/api/v1/todo_types.go

type TodoSpec struct {
	Summary     string       `json:"summary"`
	Complete    bool         `json:"complete"`
	NotifyEmail string       `json:"notifyEmail,omitempty"`
	NotifyAt    *metav1.Time `json:"notifyAt,omitempty"`
}

type TodoStatus struct {
	Notified bool `json:"notified"`
}

Update config sample

1. Edit todo/config/samples/todo_v1_todo.yaml
2. Test it:

   $ kubectl apply -f todo/config/samples/todo_v1_todo.yaml
   

Update controller

TODO:

• Notification job failed
• Schedule too close

State Machine

States

• Updated
• ShouldSchedule
• ShouldNotify
• Notifying
• Notified
• ERROR!!!

Determine states