def get_es_count(cls, index, date=None):
"""Get elasticsearch count.
Get count of items in elasticsearch for the given index.
:param index: index.
:return: items count.
"""
try:
query = RecordsSearch(index=index).query()
if date:
query = query.filter('range', _created={'lte': date})
result = query.count()
except NotFoundError:
result = f'No >>{index}<< in ES'
return result
