Data Integration

In KCL, we can not only compile and output the configuration code written by KCL into YAML format data, but also directly embed JSON/YAML and other data into the KCL language. For example, for the following KCL code (main.k):

import yaml

schema Server:
    ports: [int]

server: Server = yaml.decode("""\
ports:
- 80
- 8080
""")

In the above code, we use the built-in yaml module of KCL and its yaml.decode function directly integrates YAML data, and uses the Server schema to directly verify the integrated YAML data. We can obtain the configuration output through the following command:

$ kcl main.k
server:
  ports:
  - 80
  - 8080

In addition, we can use yaml.encode to serialize YAML data:

import yaml

server = yaml.encode({
    ports = [80, 8080]
})

The output of the execution command is:

$ kcl main.k
server: |
  ports:
  - 80
  - 8080

Similarly, for JSON data, we can use json.encode and json.decode function performs data integration in the same way:

import json

server_json_encode = json.encode({
    ports = [80, 8080]
})
server_json_decode = json.decode('{"ports": [80, 8080]}')

The output of the execution command is:

$ kcl main.k
server_json_encode: '{"ports": [80, 8080]}'
server_json_decode:
  ports:
  - 80
  - 8080