Nornir framework comes with the pyyaml module installed, hence I do not need to install pyyaml.

Convert dictionary to yaml

The purpose is to accept json data from the api gateway and convert this into yaml in the backend to be sent over to ansible through nornir. The below is a test on convert dictionary to yaml.

import yaml

# sample json structure send by user.
data = {
    "fw01":
        {
            "platform": "cisco_asa",
            "hostname": "192.168.100.20",
            "port": "22",
            "group": ["cisco_asa", "cisco", "firewall"],
            "username": "placeholder",
            "password": "placeholder",
        },
    "fw02":
        {
            "platform": "cisco_asa",
            "hostname": "192.168.100.30",
            "port": "22",
            "username": "placeholder",
            "password": "placeholder"
        }
}

# translate dictionary into yaml format.
y = yaml.dump(data)
print(y)

The yaml structure will be like this:

Convert from yaml to dictionary

The below code shows how to convert yaml to dictionary.

import yaml
from pprint import pprint

# example yaml 
y = """
fw01:
  group:
  - cisco_asa
  - cisco
  - firewall
  hostname: 192.168.100.20
  password: placeholder
  platform: cisco_asa
  port: '22'
  username: placeholder
fw02:
  hostname: 192.168.100.30
  password: placeholder
  platform: cisco_asa
  port: '22'
  username: placeholder
  """

# translate yaml to dictionary
dic = yaml.safe_load(y)
pprint(dic)

The dictionary output: