Kubernetes: Infrastructure For K8S Net testing.

This patch adds necessary code to perform K8S Networking performance
benchmarking.

Signed-off-by: Sridhar K. N. Rao <sridhar.rao@spirent.com>
Change-Id: I059ddd2e9ad3ee7c05e4620c64401f81474be195

1 files changed, 93 insertions, 0 deletions

diff --git a/core/pod_controller.py b/core/pod_controller.py
new file mode 100644
index 00000000..8bc91ec4
--- /dev/null
+++ b/core/pod_controller.py
@@ -0,0 +1,93 @@
+# Copyright 2020 Spirent Communications
+#
+# 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.
+""" pod Controller interface
+"""
+
+import logging
+import pexpect
+#from conf import settings
+from pods.pod.pod import IPod
+
+class PodController():
+    """POD controller class
+
+    Used to set-up and control PODs for specified scenario
+
+    Attributes:
+        _pod_class: A class object representing the POD.
+        _deployment: A string describing the scenario to set-up in the
+            constructor.
+        _pods: A list of pods controlled by the controller.
+    """
+
+    def __init__(self, deployment, pod_class):
+        """Sets up the POD infrastructure based on deployment scenario
+
+        :param pod_class: The POD class to be used.
+        """
+        # reset POD ID counter for each testcase
+        IPod.reset_pod_counter()
+        pod_number = 0
+        # setup controller with requested number of pods
+        self._logger = logging.getLogger(__name__)
+        self._pod_class = pod_class
+        self._deployment = deployment.lower()
+        self._pods = []
+        if self._deployment == 'p2p':
+            pod_number = 1
+
+        if pod_number:
+            self._pods = [pod_class() for _ in range(pod_number)]
+
+            self._logger.debug('Initializing the pod')
+
+    def get_pods(self):
+        """Returns a list of pods controlled by this controller.
+        """
+        self._logger.debug('get the pods')
+        return self._pods
+
+    def get_pods_number(self):
+        """Returns a number of pods controlled by this controller.
+        """
+        self._logger.debug('get_pods_number %s pod[s]', str(len(self._pods)))
+        return len(self._pods)
+
+    def start(self):
+        """Boots all pods set-up by __init__.
+
+        This is a blocking function.
+        """
+        self._logger.debug('start the pod')
+        try:
+            for pod in self._pods:
+                pod.create()
+        except pexpect.TIMEOUT:
+            self.stop()
+            raise
+
+    def stop(self):
+        """Stops all pods set-up by __init__.
+
+        This is a blocking function.
+        """
+        self._logger.debug('stopping the pod')
+        for pod in self._pods:
+            pod.terminate()
+
+    def __enter__(self):
+        self.start()
+
+    def __exit__(self, type_, value, traceback):
+        self.stop()