Reorder lib files removing redundant dir layer

Move all the files of 'cns-libs/cnslibs/common' dir
to the 'openshift-storage-libs/openshiftstoragelibs',
because 'common' is the only dir there, which doesn't really makes sense.
And "cns" is old project name, so, replace it with
"openshift-storage-libs".

Also, fix all the imports of these libs.

Change-Id: Ife00a73554e73b21b214b15016b0c8dbbf423446

1 files changed, 56 insertions, 0 deletions

diff --git a/openshift-storage-libs/openshiftstoragelibs/naming.py b/openshift-storage-libs/openshiftstoragelibs/naming.py
new file mode 100644
index 00000000..b44559ad
--- /dev/null
+++ b/openshift-storage-libs/openshiftstoragelibs/naming.py
@@ -0,0 +1,56 @@
+"""Helper functions for working with names for volumes, resources, etc.
+"""
+
+import string
+import random
+import re
+
+# we only use lowercase here because kubernetes requires
+# names to be lowercase or digits, so that is our default
+UNIQUE_CHARS = (string.lowercase + string.digits)
+
+
+def make_unique_label(prefix=None, suffix=None, sep='-',
+                      clean=r'[^a-zA-Z0-9]+', unique_len=8,
+                      unique_chars=UNIQUE_CHARS):
+    """Generate a unique name string based on an optional prefix,
+    suffix, and pseudo-random set of alphanumeric characters.
+
+    Args:
+        prefix (str): Start of the unique string.
+        suffix (str): End of the unique string.
+        sep (str): Separator string (between sections/invalid chars).
+        clean (str): Reqular expression matching invalid chars.
+            that will be replaced by `sep` if found in the prefix or suffix
+        unique_len (int): Length of the unique part.
+        unique_chars (str): String representing the set of characters
+            the unique part will draw from.
+    Returns:
+        str: The uniqueish string.
+    """
+    cre = re.compile(clean)
+    parts = []
+    if prefix:
+        parts.append(cre.sub(sep, prefix))
+    parts.append(''.join(random.choice(unique_chars)
+                         for _ in range(unique_len)))
+    if suffix:
+        parts.append(cre.sub(sep, suffix))
+    return sep.join(parts)
+
+
+def extract_method_name(full_name, keep_class=False):
+    """Given a full test name as returned from TestCase.id() return
+    just the method part or class.method.
+
+    Args:
+        full_name (str): Dot separated name of test.
+        keep_class (str): Retain the class name, if false only the
+            method name will be returned.
+    Returns:
+        str: Method name or class.method_name.
+    """
+    offset = -1
+    if keep_class:
+        offset = -2
+    return '.'.join(full_name.split('.')[offset:])