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authorHans Feldt <hans.feldt@ericsson.com>2015-05-19 10:32:34 +0200
committerHans Feldt <hans.feldt@ericsson.com>2015-05-19 10:35:43 +0200
commitbc5339353682d737e5d5d948642028fab3bd186a (patch)
tree45d24bf997248906305b182619e8a79067c800a2
parentfca312912a5b0f3f9815db22affbd2b5244fc7c4 (diff)
add package common with module utils
The utils module supports finding subclasses of a class. This is used to find Runner and Scenarios types. utils.py originates from rally but is stripped down and slightly modified (some dependencies removed). Change-Id: Ibc196698e1212899b0836988d0345696b00c5caf JIRA: - Signed-off-by: Hans Feldt <hans.feldt@ericsson.com>
-rw-r--r--yardstick/common/__init__.py0
-rw-r--r--yardstick/common/utils.py62
2 files changed, 62 insertions, 0 deletions
diff --git a/yardstick/common/__init__.py b/yardstick/common/__init__.py
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/yardstick/common/__init__.py
diff --git a/yardstick/common/utils.py b/yardstick/common/utils.py
new file mode 100644
index 000000000..4de0fcfd5
--- /dev/null
+++ b/yardstick/common/utils.py
@@ -0,0 +1,62 @@
+# Copyright 2013: Mirantis Inc.
+# All Rights Reserved.
+#
+# 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.
+
+# yardstick comment: this is a modified copy of rally/rally/common/utils.py
+
+import os
+import sys
+from oslo_utils import importutils
+
+import yardstick
+
+
+def itersubclasses(cls, _seen=None):
+ """Generator over all subclasses of a given class in depth first order."""
+
+ if not isinstance(cls, type):
+ raise TypeError("itersubclasses must be called with "
+ "new-style classes, not %.100r" % cls)
+ _seen = _seen or set()
+ try:
+ subs = cls.__subclasses__()
+ except TypeError: # fails only when cls is type
+ subs = cls.__subclasses__(cls)
+ for sub in subs:
+ if sub not in _seen:
+ _seen.add(sub)
+ yield sub
+ for sub in itersubclasses(sub, _seen):
+ yield sub
+
+
+def try_append_module(name, modules):
+ if name not in modules:
+ modules[name] = importutils.import_module(name)
+
+
+def import_modules_from_package(package):
+ """Import modules from package and append into sys.modules
+
+ :param: package - Full package name. For example: rally.deploy.engines
+ """
+ path = [os.path.dirname(yardstick.__file__), ".."] + package.split(".")
+ path = os.path.join(*path)
+ for root, dirs, files in os.walk(path):
+ for filename in files:
+ if filename.startswith("__") or not filename.endswith(".py"):
+ continue
+ new_package = ".".join(root.split(os.sep)).split("....")[1]
+ module_name = "%s.%s" % (new_package, filename[:-3])
+ try_append_module(module_name, sys.modules)