Example on parsing Machinery data

Parsing machinery data from external applications

Machinery stores its data in ~/.machinery/<name_of_the_inspected_system>/manifest.json. This file can be parsed from other applications via normal json methods. As the machinery System Description Format has a format_version number you need to check if your parser is working for the version of a specific manifest file.

Example for Python

import json

# Open JSON file and read it
with open('manifest.json') as json_file:
  data = json.load(json_file)

# Access System Description format version
format_version = data["meta"]["format_version"]
print("System Description Version: " + str(format_version))

# Check if format_version is the required version
if format_version != 6:
  print("Unsupported format version")
  exit(1)

# iterate over a list
for package in data["packages"]["_elements"]:
  print("Package name: " + package["name"])
  print("  Version: " + package["version"])
  print("  Release: " + package["release"])

# Access single values from the data
print("OS name: " + data["os"]["name"])
print("OS version: " + data["os"]["version"])
print("Init System: " + data["services"]["_attributes"]["init_system"])