Enhance: Enable O2 DMS by exposing k8s API endpoint

[pti/o2.git] / o2ims / views / ocloud_view.py

diff --git a/o2ims/views/ocloud_view.py b/o2ims/views/ocloud_view.py
index 7355f71..7213fc4 100644 (file)
--- a/o2ims/views/ocloud_view.py
+++ b/o2ims/views/ocloud_view.py
@@ -13,12 +13,17 @@
 #  limitations under the License.
 
 import uuid
+import yaml
+import random
+import string
+from datetime import datetime
 
 from o2common.service import unit_of_work
 from o2ims.views.ocloud_dto import SubscriptionDTO
 from o2ims.domain.subscription_obj import Subscription
 
 from o2common.helper import o2logging
+from o2common.config import config
 logger = o2logging.get_logger(__name__)
 
 
@@ -99,10 +104,82 @@ def deployment_managers(uow: unit_of_work.AbstractUnitOfWork):
 
 
 def deployment_manager_one(deploymentManagerId: str,
-                           uow: unit_of_work.AbstractUnitOfWork):
+                           uow: unit_of_work.AbstractUnitOfWork,
+                           profile: str = 'params'):
     with uow:
         first = uow.deployment_managers.get(deploymentManagerId)
-        return first.serialize() if first is not None else None
+        if first is None:
+            return first
+        result = first.serialize()
+
+    if "params" == profile:
+        pass
+    elif "file" == profile and result.hasattr("profile"):
+        p = result.pop("profile", None)
+        result["profile"] = _gen_kube_config(deploymentManagerId, p)
+    else:
+        result.pop("profile", None)
+
+    return result
+
+
+def _gen_kube_config(dmId: str, kubeconfig: dict) -> dict:
+
+    # KUBECONFIG environment variable
+    # reference:
+    # https://kubernetes.io/docs/tasks/access-application-cluster/configure-access-multiple-clusters/
+    data = {
+        'apiVersion': 'v1',
+        'clusters': [
+            {
+                'cluster': {
+                    'server':
+                    kubeconfig.pop('cluster_api_endpoint', None),
+                    'certificate-authority-data':
+                    kubeconfig.pop('cluster_ca_cert', None),
+                },
+                'name': 'inf-cluster'
+            }],
+        'contexts': [
+            {
+                'context': {
+                    'cluster': 'inf-cluster',
+                    'user': 'kubernetes-admin'
+                },
+                'name': 'kubernetes-admin@inf-cluster'
+            }
+        ],
+        'current-context': 'kubernetes-admin@inf-cluster',
+        'kind': 'Config',
+        'preferences': {},
+        'users': [
+            {
+                'name': kubeconfig.pop('admin_user', None),
+                'user': {
+                    'client-certificate-data':
+                    kubeconfig.pop('admin_client_cert', None),
+                    'client-key-data':
+                    kubeconfig.pop('admin_client_key', None),
+                }
+            }]
+    }
+
+    # Generate a random key for tmp kube config file
+    letters = string.ascii_uppercase
+    random_key = ''.join(random.choice(letters) for i in range(10))
+
+    # Get datetime of now as tag of the tmp file
+    current_time = datetime.now().strftime("%Y%m%d%H%M%S")
+    tmp_file_name = random_key + "_" + current_time
+
+    # write down the yaml file of kubectl into tmp folder
+    with open('/tmp/kubeconfig_' + tmp_file_name, 'w') as file:
+        yaml.dump(data, file)
+
+    kubeconfig["kube_config_file"] = config.get_api_url() + \
+        config.get_o2dms_api_base() + "/" + dmId + "/download/" + tmp_file_name
+
+    return kubeconfig
 
 
 def subscriptions(uow: unit_of_work.AbstractUnitOfWork):