Added validation library

distill/validation.py

@@ -0,0 +1,29 @@
+'''
+distill: This package contains a flask app RESTful api for distill
+
+This flask app exposes some restful api endpoints for querying User-ALE. 
+Very similar to Lucene syntax for basic query operations.
+
+Copyright 2016, The Charles Stark Draper Laboratory
+Licensed under Apache Software License.
+'''
+
+from distill.exceptions import ValidationError
+import json, yaml
+
+# doc = yaml.safe_load (msg)
+# 	return json.dumps (doc, indent=4, separators=(',', ': '), sort_keys=True)
+
+
+"""
+Raises ValidationError 
+"""
+def validate_request (q):
+	if 'q' not in q:
+		raise ValidationError ("Missing required parameter: %s" % 'q')
+	else:
+		# Handle rest of parsing
+		pass
+
+def str2bool(v):
+  return v.lower() in ("yes", "true", "t", "1")