cerberus deep dependencies

crb.py

#!/opt/local/bin/python2.7

from __future__ import print_function

import yaml
import cerberus

SCHEMA = '''
document:
  type: list
  schema:
    type: dict
    schema:
      batch:
        type: list
        schema:
         type: dict
         schema:
           requests:
             type: integer
             min: 1
             required: true
           port:
             type: integer
             min: 1
             max: 65535
             required: true
           method:
             type: string
             empty: false
             required: true
             allowed:
               - get
               - post
           proto:
             type: string
             empty: false
             required: true
             allowed:
               - http
               - https
           https_protocol:
             type: string
             empty: false
             allowed:
               - SSL2
               - TLS1
               - TLS1.1
               - TLS1.2
             dependencies:
               proto: https
'''

DOCUMENT = '''
- batch:
  - method: get
    proto: http
    port: 80
    requests: 10
  - method: get
    proto: https
    port: 443
    requests: 20
    https_protocol: TLS1
  - method: get
    proto: https
    port: 8080
    requests: 1
    https_protocol: TLS1
- batch:
  - method: get
    proto: http
    port: 8080
    requests: 15
    https_protocol: SSL2
  - method: get
    proto: https
    port: 8443
    requests: 35
    https_protocol: TLS1.2
  - method: get
    proto: https
    port: 8088
    requests: 1
    https_protocol: TLS1
'''


schema = yaml.safe_load(SCHEMA)
document = {'document': yaml.safe_load(DOCUMENT)}

validator = cerberus.Validator(schema=schema)

if not validator.validate(document):
    print("Error: {}".format(validator.errors))