1 files changed, 89 insertions, 0 deletions
diff --git a/vnftest/steps/base.py b/vnftest/steps/base.py
new file mode 100644
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+++ b/vnftest/steps/base.py
@@ -0,0 +1,89 @@
+##############################################################################
+# Copyright 2018 EuropeanSoftwareMarketingLtd.
+# ===================================================================
+#  Licensed under the ApacheLicense, Version2.0 (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
+#
+# 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
+##############################################################################
+# vnftest comment: this is a modified copy of
+# rally/rally/benchmark/steps/base.py
+
+""" Step base class
+"""
+
+from __future__ import absolute_import
+import vnftest.common.utils as utils
+
+
+class Step(object):
+
+    def setup(self):
+        """ default impl for step setup """
+        pass
+
+    def run(self, args):
+        """ catcher for not implemented run methods in subclasses """
+        raise RuntimeError("run method not implemented")
+
+    def teardown(self):
+        """ default impl for step teardown """
+        pass
+
+    @staticmethod
+    def get_types():
+        """return a list of known runner type (class) names"""
+        steps = []
+        for step in utils.itersubclasses(Step):
+            steps.append(step)
+        return steps
+
+    @staticmethod
+    def get_cls(step_type):
+        """return class of specified type"""
+        for step in utils.itersubclasses(Step):
+            if step_type == step.__step_type__:
+                return step
+
+        raise RuntimeError("No such step type %s" % step_type)
+
+    @staticmethod
+    def get(step_type):
+        """Returns instance of a step runner for execution type.
+        """
+        for step in utils.itersubclasses(Step):
+            if step_type == step.__step_type__:
+                return step.__module__ + "." + step.__name__
+
+        raise RuntimeError("No such step type %s" % step_type)
+
+    @classmethod
+    def get_step_type(cls):
+        """Return a string with the step type, if defined"""
+        return str(getattr(cls, '__step_type__', None))
+
+    @classmethod
+    def get_description(cls):
+        """Return a single line string with the class description
+
+        This function will retrieve the class docstring and return the first
+        line, or 'None' if it's empty.
+        """
+        return cls.__doc__.splitlines()[0] if cls.__doc__ else str(None)
+
+    def _push_to_outputs(self, keys, values):
+        return dict(zip(keys, values))
+
+    def _change_obj_to_dict(self, obj):
+        dic = {}
+        for k, v in vars(obj).items():
+            try:
+                vars(v)
+            except TypeError:
+                dic[k] = v
+        return dic