components, main: add Component Init method

Add Init() method to the Component interface and call it from main on
startup.

Will be used to move startup-time code from ReconcileComponent
(like adjusting params.env).

Signed-off-by: Yauheni Kaliuta <[email protected]>

components/component.go

@@ -38,6 +38,10 @@ type Component struct {
 	DevFlags *DevFlags `json:"devFlags,omitempty"`
 }
 
+func (c *Component) Init(_ context.Context, _ cluster.Platform) error {
+	return nil
+}
+
 func (c *Component) GetManagementState() operatorv1.ManagementState {
 	return c.ManagementState
 }
@@ -77,6 +81,7 @@ type ManifestsConfig struct {
 }
 
 type ComponentInterface interface {
+	Init(ctx context.Context, platform cluster.Platform) error
 	ReconcileComponent(ctx context.Context, cli client.Client, logger logr.Logger,
 		owner metav1.Object, DSCISpec *dsciv1.DSCInitializationSpec, platform cluster.Platform, currentComponentStatus bool) error
 	Cleanup(ctx context.Context, cli client.Client, owner metav1.Object, DSCISpec *dsciv1.DSCInitializationSpec) error

main.go

@@ -21,6 +21,7 @@ import (
 	"flag"
 	"os"
 
+	"github.com/hashicorp/go-multierror"
 	addonv1alpha1 "github.com/openshift/addon-operator/apis/addons/v1alpha1"
 	ocappsv1 "github.com/openshift/api/apps/v1" //nolint:importas //reason: conflicts with appsv1 "k8s.io/api/apps/v1"
 	buildv1 "github.com/openshift/api/build/v1"
@@ -102,6 +103,22 @@ func init() { //nolint:gochecknoinits
 	utilruntime.Must(operatorv1.Install(scheme))
 }
 
+func initComponents(ctx context.Context, p cluster.Platform) error {
+	var errs *multierror.Error
+	var dummyDSC = &dscv1.DataScienceCluster{}
+
+	components, err := dummyDSC.GetComponents()
+	if err != nil {
+		return err
+	}
+
+	for _, c := range components {
+		errs = multierror.Append(errs, c.Init(ctx, p))
+	}
+
+	return errs.ErrorOrNil()
+}
+
 func main() { //nolint:funlen,maintidx
 	var metricsAddr string
 	var enableLeaderElection bool
@@ -323,6 +340,10 @@ func main() { //nolint:funlen,maintidx
 		setupLog.Error(err, "unable to set up ready check")
 		os.Exit(1)
 	}
+	if err := initComponents(ctx, platform); err != nil {
+		setupLog.Error(err, "unable to init components")
+		os.Exit(1)
+	}
 
 	setupLog.Info("starting manager")
 	if err := mgr.Start(ctx); err != nil {