Adding CSR Approval functionality

Update rsync to be able to approve CSR

Issue-ID: MULTICLOUD-1143
Signed-off-by: Ritu Sood <ritu.sood@intel.com>
Change-Id: I0b2bec3475a3453a2d8fc9c2e87cfc4531b0e2f3

2 files changed, 94 insertions, 0 deletions

diff --git a/src/rsync/pkg/client/approve.go b/src/rsync/pkg/client/approve.go
new file mode 100644
index 00000000..ee157713
--- /dev/null
+++ b/src/rsync/pkg/client/approve.go
@@ -0,0 +1,56 @@
+/*
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+package client
+
+import (
+	"encoding/json"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	certificatesv1beta1 "k8s.io/api/certificates/v1beta1"
+	"github.com/onap/multicloud-k8s/src/orchestrator/pkg/appcontext/subresources"
+	pkgerrors "github.com/pkg/errors"
+	"github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/logutils"
+)
+
+func (c *Client) Approve(name string, sa []byte) error {
+
+	var a subresources.ApprovalSubresource
+	err := json.Unmarshal(sa, &a)
+	if err != nil {
+		return pkgerrors.Wrap(err, "An error occurred while parsing the approval Subresource.")
+	}
+	csr, err := c.Clientset.CertificatesV1beta1().CertificateSigningRequests().Get(name, metav1.GetOptions{})
+	if err != nil {
+		return err
+	}
+	var timePtr metav1.Time
+	str := []string{a.LastUpdateTime}
+	if err = metav1.Convert_Slice_string_To_v1_Time(&str, &timePtr, nil); err != nil {
+	    return pkgerrors.Wrap(err, "An error occurred while converting time from string.")
+	}
+	// Update CSR with Conditions
+	csr.Status.Conditions = append(csr.Status.Conditions, certificatesv1beta1.CertificateSigningRequestCondition{
+		Type:           certificatesv1beta1.RequestConditionType(a.Type),
+		Reason:         a.Reason,
+		Message:        a.Message,
+		LastUpdateTime: timePtr,
+	})
+	// CSR Approval
+	_, err = c.Clientset.CertificatesV1beta1().CertificateSigningRequests().UpdateApproval(csr)
+	if err != nil {
+		logutils.Error("Failed to UpdateApproval", logutils.Fields{
+			"error":    err,
+			"resource": name,
+		})
+		return err
+	}
+	return nil
+}
diff --git a/src/rsync/pkg/context/context.go b/src/rsync/pkg/context/context.go
index a2771379..841dfcda 100644
--- a/src/rsync/pkg/context/context.go
+++ b/src/rsync/pkg/context/context.go
@@ -68,6 +68,28 @@ func getRes(ac appcontext.AppContext, name string, app string, cluster string) (
 	return byteRes, sh, nil
 }
 
+func getSubResApprove(ac appcontext.AppContext, name string, app string, cluster string) ([]byte, interface{}, error) {
+	var byteRes []byte
+	rh, err := ac.GetResourceHandle(app, cluster, name)
+	if err != nil {
+		return nil, nil, err
+	}
+	sh, err := ac.GetLevelHandle(rh, "subresource/approval")
+	if err != nil {
+		return nil, nil, err
+	}
+	resval, err := ac.GetValue(sh)
+	if err != nil {
+		return nil, sh, err
+	}
+	if resval != "" {
+		byteRes = []byte(fmt.Sprintf("%v", resval.(interface{})))
+	} else {
+		return nil, sh, pkgerrors.Errorf("SubResource value is nil %s", name)
+	}
+	return byteRes, sh, nil
+}
+
 func terminateResource(ac appcontext.AppContext, c *kubeclient.Client, name string, app string, cluster string, label string) error {
 	res, sh, err := getRes(ac, name, app, cluster)
 	if err != nil {
@@ -144,6 +166,22 @@ func instantiateResource(ac appcontext.AppContext, c *kubeclient.Client, name st
 		"cluster":  cluster,
 		"resource": name,
 	})
+
+	// Currently only subresource supported is approval
+	subres, _, err := getSubResApprove(ac, name, app, cluster)
+	if err == nil {
+		result := strings.Split(name, "+")
+		if result[0] == "" {
+			return pkgerrors.Errorf("Resource name is nil %s:", name)
+		}
+		logutils.Info("Approval Subresource::", logutils.Fields{
+			"cluster":  cluster,
+			"resource": result[0],
+			"approval": string(subres),
+		})
+		err = c.Approve(result[0], subres)
+		return err
+	}
 	return nil
 }