Add uuid utils

Change-Id: Iae18676b91218dc5d7f0f74aa64056811cd82776

steth/stethclient/utils.py

@@ -18,6 +18,7 @@ import jsonrpclib
 import six
 import socket
 import sys
+import uuid
 
 
 def safe_decode(text, incoming=None, errors='strict'):
@@ -134,3 +135,32 @@ def get_ip_from_agent(node, net_type):
             return 1
     except Exception as e:
         print "Can't get ip! Because: %s" % e
+
+
+def generate_uuid():
+    """Creates a random uuid string.
+
+    :returns: string
+    """
+    return str(uuid.uuid4())
+
+
+def _format_uuid_string(string):
+    return (string.replace('urn:', '')
+                  .replace('uuid:', '')
+                  .strip('{}')
+                  .replace('-', '')
+                  .lower())
+
+
+def is_uuid_like(val):
+    """Returns validation of a value as a UUID.
+
+    :param val: Value to verify
+    :type val: string
+    :returns: bool
+    """
+    try:
+        return str(uuid.UUID(val)).replace('-', '') == _format_uuid_string(val)
+    except (TypeError, ValueError, AttributeError):
+        return False