LOG = log.getLogger(__name__)
+OPERATIONS = {'gte': lambda x, y: x >= y,
+ 'lte': lambda x, y: x <= y,
+ 'gt': lambda x, y: x > y,
+ 'lt': lambda x, y: x < y,
+ 'eq': lambda x, y: x == y
+ }
+
+
def compute_air_distance(_src, _dst):
"""Compute Air Distance