Initial checkin of Stress Test for nova.

Change-Id: I1c4c656e3b8ec715524d369c226ec122920f89fb
diff --git a/stress/basher.py b/stress/basher.py
new file mode 100644
index 0000000..b6fcfca
--- /dev/null
+++ b/stress/basher.py
@@ -0,0 +1,41 @@
+# Copyright 2011 Quanta Research Cambridge, Inc.

+#

+#    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 to describe actions to be included in a stress test."""

+

+

+class BasherAction(object):

+    """

+    Used to describe each action that you would like to include in a test run.

+    """

+

+    def __init__(self, test_case, probability, pargs=[], kargs={}):

+        """

+        `test_case`  : the name of the class that implements the action

+        `pargs`      : positional arguments to the constructor of `test_case`

+        `kargs`      : keyword arguments to the constructor of `test_case`

+        `probability`: frequency that each action

+        """

+        self.test_case = test_case

+        self.pargs = pargs

+        self.kargs = kargs

+        self.probability = probability

+

+    def invoke(self, manager, state):

+        """

+        Calls the `run` method of the `test_case`.

+        """

+        return self.test_case.run(manager, state, *self.pargs, **self.kargs)

+

+    def __str__(self):

+        return self.test_case.__class__.__name__