feat: support specifying components in a SpinApp

Signed-off-by: Matthew Fisher <[email protected]>
Signed-off-by: Kate Goldenring <[email protected]>

Author: kate-goldenring

pkg/cmd/scaffold.go

@@ -29,6 +29,7 @@ type ScaffoldOptions struct {
 	targetCPUUtilizationPercentage    int32
 	targetMemoryUtilizationPercentage int32
 	variables                         map[string]string
+	components                        []string
 }
 
 var scaffoldOpts = ScaffoldOptions{}
@@ -49,6 +50,7 @@ type appConfig struct {
 	TargetCPUUtilizationPercentage    int32
 	TargetMemoryUtilizationPercentage int32
 	Variables                         map[string]string
+	Components                        []string
 }
 
 var manifestStr = `apiVersion: core.spinkube.dev/v1alpha1
@@ -70,6 +72,12 @@ spec:
     value: {{ $value }}
 {{- end }}
 {{- end }}
+{{- if .Components }}
+  components:
+{{- range $c := .Components }}
+  - {{ $c }}
+{{- end }}
+{{- end }}
 {{- if or .CPULimit .MemoryLimit }}
   resources:
     limits:
@@ -263,6 +271,7 @@ func scaffold(opts ScaffoldOptions) ([]byte, error) {
 		Autoscaler:                        opts.autoscaler,
 		ImagePullSecrets:                  opts.imagePullSecrets,
 		Variables:                         opts.variables,
+		Components:                        opts.components,
 	}
 
 	if opts.configfile != "" {
@@ -323,6 +332,7 @@ func init() {
 	scaffoldCmd.Flags().StringVarP(&scaffoldOpts.configfile, "runtime-config-file", "c", "", "Path to runtime config file")
 	scaffoldCmd.Flags().StringSliceVarP(&scaffoldOpts.imagePullSecrets, "image-pull-secret", "s", []string{}, "Secrets in the same namespace to use for pulling the image")
 	scaffoldCmd.PersistentFlags().StringToStringVarP(&scaffoldOpts.variables, "variable", "v", nil, "Application variable (name=value) to be provided to the application")
+	scaffoldCmd.PersistentFlags().StringSliceVarP(&scaffoldOpts.components, "component", "", nil, "Component ID to run. This can be specified multiple times. The default is all components.")
 
 	if err := scaffoldCmd.MarkFlagRequired("from"); err != nil {
 		log.Fatal(err)

pkg/cmd/scaffold_test.go

@@ -98,6 +98,19 @@ func TestScaffoldOutput(t *testing.T) {
 			},
 			expected: "variables.yml",
 		},
+		{
+			name: "components are specified",
+			opts: ScaffoldOptions{
+				from:     "ghcr.io/foo/example-app:v0.1.0",
+				replicas: 2,
+				executor: "containerd-shim-spin",
+				components: []string{
+					"hello",
+					"world",
+				},
+			},
+			expected: "components.yml",
+		},
 	}
 
 	for _, tc := range testcases {

pkg/cmd/testdata/components.yml

@@ -0,0 +1,11 @@
+apiVersion: core.spinoperator.dev/v1alpha1
+kind: SpinApp
+metadata:
+  name: example-app
+spec:
+  image: "ghcr.io/foo/example-app:v0.1.0"
+  executor: containerd-shim-spin
+  replicas: 2
+  components:
+  - hello
+  - world