For an ES host - call the _mappings API and get the type count for each index

get_es_index_type_count.py

import sys
import json
import requests

# The following find function is a minor edit of the function posted here
# https://stackoverflow.com/questions/9807634/find-all-occurrences-of-a-key-in-nested-python-dictionaries-and-lists
def find(key, value):
  for k, v in value.iteritems():
    if k == key and not isinstance(v, dict) and not isinstance(v, list):
      yield v
    elif isinstance(v, dict):
      for result in find(key, v):
        yield result
    elif isinstance(v, list):
      for d in v:
        for result in find(key, d):
          yield result

def get_index_type_count(es_host):
  try:
    response = requests.get('https://%s/_mapping/' % es_host)
  except Exception as ex:
    print('Failed to get response - %s' % ex)
    sys.exit(1)

  indices_mapping_data = response.json()
  output = {}

  for index, mapping_data in indices_mapping_data.iteritems():
    output[index] = len(list(find('type', mapping_data)))

  return output

if __name__ == '__main__':
  print json.dumps(get_index_type_count(sys.argv[1]), indent=2)