Updates tektonPipeline to make it independent of tektonConfig

  - With the addition of operator version config map getting created
    in tektonConfig, the targetNamespace was getting created in
    tektonConfig reconciler, but if tektonConfig is not installed
    and tektonPipeline is supposed to installed alone then it won't
    be installed as it would miss the targetNamespace. So this patch
    checks for the targetNamespace in tektonPipeline reconciler, if
    it is not present then it creates the targetNamespace and also
    the operator version config map i.e. makes tektonPipeline
    independent of tektonConfig

Signed-off-by: Puneet Punamiya <[email protected]>

pkg/reconciler/common/targetnamespace.go

@@ -0,0 +1,54 @@
+package common
+
+import (
+	"context"
+	mf "github.com/manifestival/manifestival"
+	"github.com/tektoncd/operator/pkg/apis/operator/v1alpha1"
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/client-go/kubernetes"
+	"os"
+	"path/filepath"
+)
+
+func CreateTargetNamespace(labels map[string]string, obj v1alpha1.TektonComponent, kubeClientSet kubernetes.Interface) error {
+	namespace := &corev1.Namespace{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: obj.GetSpec().GetTargetNamespace(),
+			Labels: map[string]string{
+				"operator.tekton.dev/targetNamespace": "true",
+			},
+		},
+	}
+	for key, value := range labels {
+		namespace.Labels[key] = value
+	}
+
+	if _, err := kubeClientSet.CoreV1().Namespaces().Create(context.TODO(), namespace, metav1.CreateOptions{}); err != nil {
+		return err
+	}
+	return nil
+}
+
+func CreateOperatorVersionConfigMap(manifest mf.Manifest, obj v1alpha1.TektonComponent) error {
+	koDataDir := os.Getenv(KoEnvKey)
+	operatorDir := filepath.Join(koDataDir, "info")
+
+	if err := AppendManifest(&manifest, operatorDir); err != nil {
+		return err
+	}
+
+	manifest, err := manifest.Transform(
+		mf.InjectNamespace(obj.GetSpec().GetTargetNamespace()),
+		mf.InjectOwner(obj),
+	)
+	if err != nil {
+		return err
+	}
+
+	if err = manifest.Apply(); err != nil {
+		return err
+	}
+
+	return nil
+}

pkg/reconciler/kubernetes/tektonpipeline/tektonpipeline.go

@@ -363,8 +363,17 @@ func (r *Reconciler) targetNamespaceCheck(ctx context.Context, tp *v1alpha1.Tekt
 	ns, err := r.kubeClientSet.CoreV1().Namespaces().Get(ctx, tp.GetSpec().GetTargetNamespace(), metav1.GetOptions{})
 	if err != nil {
 		if apierrors.IsNotFound(err) {
+			if err := common.CreateTargetNamespace(labels, tp, r.kubeClientSet); err != nil {
+				return err
+			}
+			if err := common.CreateOperatorVersionConfigMap(r.manifest, tp); err != nil {
+				return err
+			}
+			return nil
+		} else {
 			return err
 		}
+
 	}
 	for key, value := range labels {
 		ns.Labels[key] = value

pkg/reconciler/shared/tektonconfig/tektonconfig.go

@@ -19,9 +19,6 @@ package tektonconfig
 import (
 	"context"
 	"fmt"
-	"os"
-	"path/filepath"
-
 	corev1 "k8s.io/api/core/v1"
 
 	mf "github.com/manifestival/manifestival"
@@ -99,7 +96,7 @@ func (r *Reconciler) ReconcileKind(ctx context.Context, tc *v1alpha1.TektonConfi
 		return err
 	}
 
-	if err := r.createOperatorVersionConfigMap(tc); err != nil {
+	if err := common.CreateOperatorVersionConfigMap(r.manifest, tc); err != nil {
 		return err
 	}
 
@@ -158,29 +155,6 @@ func (r *Reconciler) ReconcileKind(ctx context.Context, tc *v1alpha1.TektonConfi
 	return nil
 }
 
-func (r *Reconciler) createOperatorVersionConfigMap(tc *v1alpha1.TektonConfig) error {
-	koDataDir := os.Getenv(common.KoEnvKey)
-	operatorDir := filepath.Join(koDataDir, "info")
-
-	if err := common.AppendManifest(&r.manifest, operatorDir); err != nil {
-		return err
-	}
-
-	manifest, err := r.manifest.Transform(
-		mf.InjectNamespace(tc.GetSpec().GetTargetNamespace()),
-		mf.InjectOwner(tc),
-	)
-	if err != nil {
-		return err
-	}
-
-	if err = manifest.Apply(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
 func (r *Reconciler) ensureTargetNamespaceExists(ctx context.Context, tc *v1alpha1.TektonConfig) error {
 
 	ns, err := r.kubeClientSet.CoreV1().Namespaces().List(ctx, metav1.ListOptions{
@@ -205,6 +179,10 @@ func (r *Reconciler) ensureTargetNamespaceExists(ctx context.Context, tc *v1alph
 			}
 		}
 	} else {
+		labels := map[string]string{"operator.tekton.dev/targetNamespace": "true"}
+		if err := common.CreateTargetNamespace(labels, tc, r.kubeClientSet); err != nil {
+			return err
+		}
 		ns := &corev1.Namespace{
 			ObjectMeta: metav1.ObjectMeta{
 				Name: tc.GetSpec().GetTargetNamespace(),