kubevela/docs/examples/app-with-status/template.yaml

apiVersion: core.oam.dev/v1beta1
kind: ComponentDefinition
metadata:
  name: nworker
  annotations:
    definition.oam.dev/description: "Describes long-running, scalable, containerized services that running at backend. They do NOT have network endpoint to receive external network traffic."
spec:
  workload:
    definition:
      apiVersion: apps/v1
      kind: Deployment
  status:
    healthPolicy: |
      isHealth: (context.output.status.readyReplicas > 0) && (context.output.status.readyReplicas == context.output.status.replicas)
    customStatus: |-
      message: "type: " + context.output.spec.template.spec.containers[0].image + ",\t enemies:" + context.outputs.gameconfig.data.enemies
  schematic:
    cue:
      template: |
        output: {
        	apiVersion: "apps/v1"
        	kind:       "Deployment"
        	spec: {
        		selector: matchLabels: {
        			"app.oam.dev/component": context.name
        		}

        		template: {
        			metadata: labels: {
        				"app.oam.dev/component": context.name
        			}

        			spec: {
        				containers: [{
        					name:  context.name
        					image: parameter.image
        					envFrom: [{
        						configMapRef: name: context.name + "game-config"
        					}]
        					if parameter["cmd"] != _|_ {
        						command: parameter.cmd
        					}
        				}]
        			}
        		}
        	}
        }

        outputs: gameconfig: {
        	apiVersion: "v1"
        	kind:       "ConfigMap"
        	metadata: {
        		name: context.name + "game-config"
        	}
        	data: {
        		enemies: parameter.enemies
        		lives:   parameter.lives
        	}
        }

        parameter: {
        	// +usage=Which image would you like to use for your service
        	// +short=i
        	image: string
        	// +usage=Commands to run in the container
        	cmd?: [...string]
        	lives:   string
        	enemies: string
        }


---
apiVersion: core.oam.dev/v1beta1
kind: TraitDefinition
metadata:
  name: ingress
spec:
  status:
    customStatus: |-
      message: "type: "+ context.outputs.service.spec.type +",\t clusterIP:"+ context.outputs.service.spec.clusterIP+",\t ports:"+ "\(context.outputs.service.spec.ports[0].port)"+",\t domain"+context.outputs.ingress.spec.rules[0].host
    healthPolicy: |
      isHealth: len(context.outputs.service.spec.clusterIP) > 0
  podDisruptive: false
  schematic:
    cue:
      template: |
        parameter: {
        	domain: string
        	http: [string]: int
        }
        // trait template can have multiple outputs in one trait
        outputs: service: {
        	apiVersion: "v1"
        	kind:       "Service"
        	spec: {
        		selector:
        			app: context.name
        		ports: [
        			for k, v in parameter.http {
        				port:       v
        				targetPort: v
        			},
        		]
        	}
        }
        outputs: ingress: {
        	apiVersion: "networking.k8s.io/v1beta1"
        	kind:       "Ingress"
        	metadata:
        		name: context.name
        	spec: {
        		rules: [{
        			host: parameter.domain
        			http: {
        				paths: [
        					for k, v in parameter.http {
        						path: k
        						backend: {
        							serviceName: context.name
        							servicePort: v
        						}
        					},
        				]
        			}
        		}]
        	}
        }