fix(kubernetes): temporary solution for updated k8s python client

kubernetes/base/leaderelection/README.md

@@ -0,0 +1,18 @@
+## Leader Election Example  
+This example demonstrates how to use the leader election library.
+
+## Running
+Run the following command in multiple separate terminals preferably an odd number. 
+Each running process uses a unique identifier displayed when it starts to run.
+
+- When a program runs, if a lock object already exists with the specified name, 
+all candidates will start as followers. 
+- If a lock object does not exist with the specified name then whichever candidate 
+creates a lock object first will become the leader and the rest will be followers.
+- The user will be prompted about the status of the candidates and transitions. 
+
+### Command to run
+```python example.py```
+
+Now kill the existing leader. You will see from the terminal outputs that one of the
+ remaining running processes will be elected as the new leader.

kubernetes/base/leaderelection/__init__.py

@@ -0,0 +1,13 @@
+# Copyright 2021 The Kubernetes Authors.
+#
+# 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.

kubernetes/base/leaderelection/electionconfig.py

@@ -0,0 +1,59 @@
+# Copyright 2021 The Kubernetes Authors.
+#
+# 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.
+
+import sys
+import logging
+logging.basicConfig(level=logging.INFO)
+
+
+class Config:
+    # Validate config, exit if an error is detected
+    def __init__(self, lock, lease_duration, renew_deadline, retry_period, onstarted_leading, onstopped_leading):
+        self.jitter_factor = 1.2
+
+        if lock is None:
+            sys.exit("lock cannot be None")
+        self.lock = lock
+
+        if lease_duration <= renew_deadline:
+            sys.exit("lease_duration must be greater than renew_deadline")
+
+        if renew_deadline <= self.jitter_factor * retry_period:
+            sys.exit("renewDeadline must be greater than retry_period*jitter_factor")
+
+        if lease_duration < 1:
+            sys.exit("lease_duration must be greater than one")
+
+        if renew_deadline < 1:
+            sys.exit("renew_deadline must be greater than one")
+
+        if retry_period < 1:
+            sys.exit("retry_period must be greater than one")
+
+        self.lease_duration = lease_duration
+        self.renew_deadline = renew_deadline
+        self.retry_period = retry_period
+
+        if onstarted_leading is None:
+            sys.exit("callback onstarted_leading cannot be None")
+        self.onstarted_leading = onstarted_leading
+
+        if onstopped_leading is None:
+            self.onstopped_leading = self.on_stoppedleading_callback
+        else:
+            self.onstopped_leading = onstopped_leading
+
+    # Default callback for when the current candidate if a leader, stops leading
+    def on_stoppedleading_callback(self):
+        logging.info("stopped leading".format(self.lock.identity))

kubernetes/base/leaderelection/example.py

@@ -0,0 +1,54 @@
+# Copyright 2021 The Kubernetes Authors.
+#
+# 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.
+
+import uuid
+from kubernetes import client, config
+from kubernetes.leaderelection import leaderelection
+from kubernetes.leaderelection.resourcelock.configmaplock import ConfigMapLock
+from kubernetes.leaderelection import electionconfig
+
+
+# Authenticate using config file
+config.load_kube_config(config_file=r"")
+
+# Parameters required from the user
+
+# A unique identifier for this candidate
+candidate_id = uuid.uuid4()
+
+# Name of the lock object to be created
+lock_name = "examplepython"
+
+# Kubernetes namespace
+lock_namespace = "default"
+
+
+# The function that a user wants to run once a candidate is elected as a leader
+def example_func():
+    print("I am leader")
+
+
+# A user can choose not to provide any callbacks for what to do when a candidate fails to lead - onStoppedLeading()
+# In that case, a default callback function will be used
+
+# Create config
+config = electionconfig.Config(ConfigMapLock(lock_name, lock_namespace, candidate_id), lease_duration=17,
+                               renew_deadline=15, retry_period=5, onstarted_leading=example_func,
+                               onstopped_leading=None)
+
+# Enter leader election
+leaderelection.LeaderElection(config).run()
+
+# User can choose to do another round of election or simply exit
+print("Exited leader election")

kubernetes/base/leaderelection/leaderelection.py

@@ -0,0 +1,191 @@
+# Copyright 2021 The Kubernetes Authors.
+#
+# 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.
+
+import datetime
+import sys
+import time
+import json
+import threading
+from .leaderelectionrecord import LeaderElectionRecord
+import logging
+# if condition to be removed when support for python2 will be removed
+if sys.version_info > (3, 0):
+    from http import HTTPStatus
+else:
+    import httplib
+logging.basicConfig(level=logging.INFO)
+
+"""
+This package implements leader election using an annotation in a Kubernetes object.
+The onstarted_leading function is run in a thread and when it returns, if it does 
+it might not be safe to run it again in a process.
+
+At first all candidates are considered followers. The one to create a lock or update
+an existing lock first becomes the leader and remains so until it keeps renewing its
+lease.
+"""
+
+
+class LeaderElection:
+    def __init__(self, election_config):
+        if election_config is None:
+            sys.exit("argument config not passed")
+
+        # Latest record observed in the created lock object
+        self.observed_record = None
+
+        # The configuration set for this candidate
+        self.election_config = election_config
+
+        # Latest update time of the lock
+        self.observed_time_milliseconds = 0
+
+    # Point of entry to Leader election
+    def run(self):
+        # Try to create/ acquire a lock
+        if self.acquire():
+            logging.info("{} successfully acquired lease".format(self.election_config.lock.identity))
+
+            # Start leading and call OnStartedLeading()
+            threading.daemon = True
+            threading.Thread(target=self.election_config.onstarted_leading).start()
+
+            self.renew_loop()
+
+            # Failed to update lease, run OnStoppedLeading callback
+            self.election_config.onstopped_leading()
+
+    def acquire(self):
+        # Follower
+        logging.info("{} is a follower".format(self.election_config.lock.identity))
+        retry_period = self.election_config.retry_period
+
+        while True:
+            succeeded = self.try_acquire_or_renew()
+
+            if succeeded:
+                return True
+
+            time.sleep(retry_period)
+
+    def renew_loop(self):
+        # Leader
+        logging.info("Leader has entered renew loop and will try to update lease continuously")
+
+        retry_period = self.election_config.retry_period
+        renew_deadline = self.election_config.renew_deadline * 1000
+
+        while True:
+            timeout = int(time.time() * 1000) + renew_deadline
+            succeeded = False
+
+            while int(time.time() * 1000) < timeout:
+                succeeded = self.try_acquire_or_renew()
+
+                if succeeded:
+                    break
+                time.sleep(retry_period)
+
+            if succeeded:
+                time.sleep(retry_period)
+                continue
+
+            # failed to renew, return
+            return
+
+    def try_acquire_or_renew(self):
+        now_timestamp = time.time()
+        now = datetime.datetime.fromtimestamp(now_timestamp)
+
+        # Check if lock is created
+        lock_status, old_election_record = self.election_config.lock.get(self.election_config.lock.name,
+                                                                        self.election_config.lock.namespace)
+
+        # create a default Election record for this candidate
+        leader_election_record = LeaderElectionRecord(self.election_config.lock.identity,
+                                                     str(self.election_config.lease_duration), str(now), str(now))
+
+        # A lock is not created with that name, try to create one
+        if not lock_status:
+            # To be removed when support for python2 will be removed
+            if sys.version_info > (3, 0):
+                if json.loads(old_election_record.body)['code'] != HTTPStatus.NOT_FOUND:
+                    logging.info("Error retrieving resource lock {} as {}".format(self.election_config.lock.name,
+                                                                                  old_election_record.reason))
+                    return False
+            else:
+                if json.loads(old_election_record.body)['code'] != httplib.NOT_FOUND:
+                    logging.info("Error retrieving resource lock {} as {}".format(self.election_config.lock.name,
+                                                                                  old_election_record.reason))
+                    return False
+
+            logging.info("{} is trying to create a lock".format(leader_election_record.holder_identity))
+            create_status = self.election_config.lock.create(name=self.election_config.lock.name,
+                                                             namespace=self.election_config.lock.namespace,
+                                                             election_record=leader_election_record)
+
+            if create_status is False:
+                logging.info("{} Failed to create lock".format(leader_election_record.holder_identity))
+                return False
+
+            self.observed_record = leader_election_record
+            self.observed_time_milliseconds = int(time.time() * 1000)
+            return True
+
+        # A lock exists with that name
+        # Validate old_election_record
+        if old_election_record is None:
+            # try to update lock with proper annotation and election record
+            return self.update_lock(leader_election_record)
+
+        if (old_election_record.holder_identity is None or old_election_record.lease_duration is None
+                or old_election_record.acquire_time is None or old_election_record.renew_time is None):
+            # try to update lock with proper annotation and election record
+            return self.update_lock(leader_election_record)
+
+        # Report transitions
+        if self.observed_record and self.observed_record.holder_identity != old_election_record.holder_identity:
+            logging.info("Leader has switched to {}".format(old_election_record.holder_identity))
+
+        if self.observed_record is None or old_election_record.__dict__ != self.observed_record.__dict__:
+            self.observed_record = old_election_record
+            self.observed_time_milliseconds = int(time.time() * 1000)
+
+        # If This candidate is not the leader and lease duration is yet to finish
+        if (self.election_config.lock.identity != self.observed_record.holder_identity
+                and self.observed_time_milliseconds + self.election_config.lease_duration * 1000 > int(now_timestamp * 1000)):
+            logging.info("yet to finish lease_duration, lease held by {} and has not expired".format(old_election_record.holder_identity))
+            return False
+
+        # If this candidate is the Leader
+        if self.election_config.lock.identity == self.observed_record.holder_identity:
+            # Leader updates renewTime, but keeps acquire_time unchanged
+            leader_election_record.acquire_time = self.observed_record.acquire_time
+
+        return self.update_lock(leader_election_record)
+
+    def update_lock(self, leader_election_record):
+        # Update object with latest election record
+        update_status = self.election_config.lock.update(self.election_config.lock.name,
+                                                         self.election_config.lock.namespace,
+                                                         leader_election_record)
+
+        if update_status is False:
+            logging.info("{} failed to acquire lease".format(leader_election_record.holder_identity))
+            return False
+
+        self.observed_record = leader_election_record
+        self.observed_time_milliseconds = int(time.time() * 1000)
+        logging.info("leader {} has successfully acquired lease".format(leader_election_record.holder_identity))
+        return True

kubernetes/base/leaderelection/leaderelection_test.py

@@ -0,0 +1,270 @@
+# Copyright 2021 The Kubernetes Authors.
+#
+# 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.
+
+
+from . import leaderelection
+from .leaderelectionrecord import LeaderElectionRecord
+from kubernetes.client.rest import ApiException
+from . import electionconfig
+import unittest
+import threading
+import json
+import time
+import pytest
+
+thread_lock = threading.RLock()
+
+class LeaderElectionTest(unittest.TestCase):
+    def test_simple_leader_election(self):
+        election_history = []
+        leadership_history = []
+
+        def on_create():
+            election_history.append("create record")
+            leadership_history.append("get leadership")
+
+        def on_update():
+            election_history.append("update record")
+
+        def on_change():
+            election_history.append("change record")
+
+        mock_lock = MockResourceLock("mock", "mock_namespace", "mock", thread_lock, on_create, on_update, on_change, None)
+
+        def on_started_leading():
+            leadership_history.append("start leading")
+
+        def on_stopped_leading():
+            leadership_history.append("stop leading")
+
+        # Create config 4.5 4 3
+        config = electionconfig.Config(lock=mock_lock, lease_duration=2.5,
+                                       renew_deadline=2, retry_period=1.5, onstarted_leading=on_started_leading,
+                                       onstopped_leading=on_stopped_leading)
+
+        # Enter leader election
+        leaderelection.LeaderElection(config).run()
+
+        self.assert_history(election_history, ["create record", "update record", "update record", "update record"])
+        self.assert_history(leadership_history, ["get leadership", "start leading", "stop leading"])
+
+    def test_leader_election(self):
+        election_history = []
+        leadership_history = []
+
+        def on_create_A():
+            election_history.append("A creates record")
+            leadership_history.append("A gets leadership")
+
+        def on_update_A():
+            election_history.append("A updates record")
+
+        def on_change_A():
+            election_history.append("A gets leadership")
+
+        mock_lock_A = MockResourceLock("mock", "mock_namespace", "MockA", thread_lock, on_create_A, on_update_A, on_change_A, None)
+        mock_lock_A.renew_count_max = 3
+
+        def on_started_leading_A():
+            leadership_history.append("A starts leading")
+
+        def on_stopped_leading_A():
+            leadership_history.append("A stops leading")
+
+        config_A = electionconfig.Config(lock=mock_lock_A, lease_duration=2.5,
+                                         renew_deadline=2, retry_period=1.5, onstarted_leading=on_started_leading_A,
+                                         onstopped_leading=on_stopped_leading_A)
+
+        def on_create_B():
+            election_history.append("B creates record")
+            leadership_history.append("B gets leadership")
+
+        def on_update_B():
+            election_history.append("B updates record")
+
+        def on_change_B():
+            leadership_history.append("B gets leadership")
+
+        mock_lock_B = MockResourceLock("mock", "mock_namespace", "MockB", thread_lock, on_create_B, on_update_B, on_change_B, None)
+        mock_lock_B.renew_count_max = 4
+
+        def on_started_leading_B():
+            leadership_history.append("B starts leading")
+
+        def on_stopped_leading_B():
+            leadership_history.append("B stops leading")
+
+        config_B = electionconfig.Config(lock=mock_lock_B, lease_duration=2.5,
+                                         renew_deadline=2, retry_period=1.5, onstarted_leading=on_started_leading_B,
+                                         onstopped_leading=on_stopped_leading_B)
+
+        mock_lock_B.leader_record = mock_lock_A.leader_record
+
+        threading.daemon = True
+        # Enter leader election for A
+        threading.Thread(target=leaderelection.LeaderElection(config_A).run()).start()
+
+        # Enter leader election for B
+        threading.Thread(target=leaderelection.LeaderElection(config_B).run()).start()
+
+        time.sleep(5)
+
+        self.assert_history(election_history,
+                            ["A creates record",
+                             "A updates record",
+                             "A updates record",
+                             "B updates record",
+                             "B updates record",
+                             "B updates record",
+                             "B updates record"])
+        self.assert_history(leadership_history,
+                            ["A gets leadership",
+                             "A starts leading",
+                             "A stops leading",
+                             "B gets leadership",
+                             "B starts leading",
+                             "B stops leading"])
+
+
+    """Expected behavior: to check if the leader stops leading if it fails to update the lock within the renew_deadline
+    and stops leading after finally timing out. The difference between each try comes out to be approximately the sleep
+    time.
+    Example:
+    create record:  0s
+    on try update:  1.5s
+    on update:  zzz s
+    on try update:  3s
+    on update: zzz s 
+    on try update:  4.5s
+    on try update:  6s
+    Timeout - Leader Exits"""
+    def test_Leader_election_with_renew_deadline(self):
+        election_history = []
+        leadership_history = []
+
+        def on_create():
+            election_history.append("create record")
+            leadership_history.append("get leadership")
+
+        def on_update():
+            election_history.append("update record")
+
+        def on_change():
+            election_history.append("change record")
+
+        def on_try_update():
+            election_history.append("try update record")
+
+        mock_lock = MockResourceLock("mock", "mock_namespace", "mock", thread_lock, on_create, on_update, on_change, on_try_update)
+        mock_lock.renew_count_max = 3
+
+        def on_started_leading():
+            leadership_history.append("start leading")
+
+        def on_stopped_leading():
+            leadership_history.append("stop leading")
+
+        # Create config
+        config = electionconfig.Config(lock=mock_lock, lease_duration=2.5,
+                                       renew_deadline=2, retry_period=1.5, onstarted_leading=on_started_leading,
+                                       onstopped_leading=on_stopped_leading)
+
+        # Enter leader election
+        leaderelection.LeaderElection(config).run()
+
+        self.assert_history(election_history,
+                            ["create record",
+                             "try update record",
+                             "update record",
+                             "try update record",
+                             "update record",
+                             "try update record",
+                             "try update record"])
+
+        self.assert_history(leadership_history, ["get leadership", "start leading", "stop leading"])
+
+    def assert_history(self, history, expected):
+        self.assertIsNotNone(expected)
+        self.assertIsNotNone(history)
+        self.assertEqual(len(expected), len(history))
+
+        for idx in range(len(history)):
+            self.assertEqual(history[idx], expected[idx],
+                              msg="Not equal at index {}, expected {}, got {}".format(idx, expected[idx],
+                                                                                      history[idx]))
+
+
+class MockResourceLock:
+    def __init__(self, name, namespace, identity, shared_lock, on_create=None, on_update=None, on_change=None, on_try_update=None):
+        # self.leader_record is shared between two MockResourceLock objects
+        self.leader_record = []
+        self.renew_count = 0
+        self.renew_count_max = 4
+        self.name = name
+        self.namespace = namespace
+        self.identity = str(identity)
+        self.lock = shared_lock
+
+        self.on_create = on_create
+        self.on_update = on_update
+        self.on_change = on_change
+        self.on_try_update = on_try_update
+
+    def get(self, name, namespace):
+        self.lock.acquire()
+        try:
+            if self.leader_record:
+                return True, self.leader_record[0]
+
+            ApiException.body = json.dumps({'code': 404})
+            return False, ApiException
+        finally:
+            self.lock.release()
+
+    def create(self, name, namespace, election_record):
+        self.lock.acquire()
+        try:
+            if len(self.leader_record) == 1:
+                return False
+            self.leader_record.append(election_record)
+            self.on_create()
+            self.renew_count += 1
+            return True
+        finally:
+            self.lock.release()
+
+    def update(self, name, namespace, updated_record):
+        self.lock.acquire()
+        try:
+            if self.on_try_update:
+                self.on_try_update()
+            if self.renew_count >= self.renew_count_max:
+                return False
+
+            old_record = self.leader_record[0]
+            self.leader_record[0] = updated_record
+
+            self.on_update()
+
+            if old_record.holder_identity != updated_record.holder_identity:
+                self.on_change()
+
+            self.renew_count += 1
+            return True
+        finally:
+            self.lock.release()
+
+
+if __name__ == '__main__':
+    unittest.main()

kubernetes/base/leaderelection/leaderelectionrecord.py

@@ -0,0 +1,22 @@
+# Copyright 2021 The Kubernetes Authors.
+#
+# 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.
+
+
+class LeaderElectionRecord:
+    # Annotation used in the lock object
+    def __init__(self, holder_identity, lease_duration, acquire_time, renew_time):
+        self.holder_identity = holder_identity
+        self.lease_duration = lease_duration
+        self.acquire_time = acquire_time
+        self.renew_time = renew_time

kubernetes/base/leaderelection/resourcelock/__init__.py

@@ -0,0 +1,13 @@
+# Copyright 2021 The Kubernetes Authors.
+#
+# 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.

kubernetes/base/leaderelection/resourcelock/configmaplock.py

@@ -0,0 +1,129 @@
+# Copyright 2021 The Kubernetes Authors.
+#
+# 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.
+
+from kubernetes.client.rest import ApiException
+from kubernetes import client, config
+from kubernetes.client.api_client import ApiClient
+from ..leaderelectionrecord import LeaderElectionRecord
+import json
+import logging
+logging.basicConfig(level=logging.INFO)
+
+
+class ConfigMapLock:
+    def __init__(self, name, namespace, identity):
+        """
+        :param name: name of the lock
+        :param namespace: namespace
+        :param identity: A unique identifier that the candidate is using
+        """
+        self.api_instance = client.CoreV1Api()
+        self.leader_electionrecord_annotationkey = 'control-plane.alpha.kubernetes.io/leader'
+        self.name = name
+        self.namespace = namespace
+        self.identity = str(identity)
+        self.configmap_reference = None
+        self.lock_record = {
+            'holderIdentity': None,
+            'leaseDurationSeconds': None,
+            'acquireTime': None,
+            'renewTime': None
+                            }
+
+    # get returns the election record from a ConfigMap Annotation
+    def get(self, name, namespace):
+        """
+        :param name: Name of the configmap object information to get
+        :param namespace: Namespace in which the configmap object is to be searched
+        :return: 'True, election record' if object found else 'False, exception response'
+        """
+        try:
+            api_response = self.api_instance.read_namespaced_config_map(name, namespace)
+
+            # If an annotation does not exist - add the leader_electionrecord_annotationkey
+            annotations = api_response.metadata.annotations
+            if annotations is None or annotations == '':
+                api_response.metadata.annotations = {self.leader_electionrecord_annotationkey: ''}
+                self.configmap_reference = api_response
+                return True, None
+
+            # If an annotation exists but, the leader_electionrecord_annotationkey does not then add it as a key
+            if not annotations.get(self.leader_electionrecord_annotationkey):
+                api_response.metadata.annotations = {self.leader_electionrecord_annotationkey: ''}
+                self.configmap_reference = api_response
+                return True, None
+
+            lock_record = self.get_lock_object(json.loads(annotations[self.leader_electionrecord_annotationkey]))
+
+            self.configmap_reference = api_response
+            return True, lock_record
+        except ApiException as e:
+            return False, e
+
+    def create(self, name, namespace, election_record):
+        """
+        :param electionRecord: Annotation string
+        :param name: Name of the configmap object to be created
+        :param namespace: Namespace in which the configmap object is to be created
+        :return: 'True' if object is created else 'False' if failed
+        """
+        body = client.V1ConfigMap(
+            metadata={"name": name,
+                      "annotations": {self.leader_electionrecord_annotationkey: json.dumps(self.get_lock_dict(election_record))}})
+
+        try:
+            api_response = self.api_instance.create_namespaced_config_map(namespace, body, pretty=True)
+            return True
+        except ApiException as e:
+            logging.info("Failed to create lock as {}".format(e))
+            return False
+
+    def update(self, name, namespace, updated_record):
+        """
+        :param name: name of the lock to be updated
+        :param namespace: namespace the lock is in
+        :param updated_record: the updated election record
+        :return: True if update is successful False if it fails
+        """
+        try:
+            # Set the updated record
+            self.configmap_reference.metadata.annotations[self.leader_electionrecord_annotationkey] = json.dumps(self.get_lock_dict(updated_record))
+            api_response = self.api_instance.replace_namespaced_config_map(name=name, namespace=namespace,
+                                                                           body=self.configmap_reference)
+            return True
+        except ApiException as e:
+            logging.info("Failed to update lock as {}".format(e))
+            return False
+
+    def get_lock_object(self, lock_record):
+        leader_election_record = LeaderElectionRecord(None, None, None, None)
+
+        if lock_record.get('holderIdentity'):
+            leader_election_record.holder_identity = lock_record['holderIdentity']
+        if lock_record.get('leaseDurationSeconds'):
+            leader_election_record.lease_duration = lock_record['leaseDurationSeconds']
+        if lock_record.get('acquireTime'):
+            leader_election_record.acquire_time = lock_record['acquireTime']
+        if lock_record.get('renewTime'):
+            leader_election_record.renew_time = lock_record['renewTime']
+
+        return leader_election_record
+
+    def get_lock_dict(self, leader_election_record):
+        self.lock_record['holderIdentity'] = leader_election_record.holder_identity
+        self.lock_record['leaseDurationSeconds'] = leader_election_record.lease_duration
+        self.lock_record['acquireTime'] = leader_election_record.acquire_time
+        self.lock_record['renewTime'] = leader_election_record.renew_time
+        
+        return self.lock_record