动态inventory脚本的python实现

#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
基于python的动态inventory脚本实例
'''
import os
import sys
import argparse
try:
    import json
except ImportError:
    import simplejson as json
class ExampleInventory(object):

    def __init__(self):
        self.inventory = {}
        self.read_cli_args()
        #定义 --list 选项
        if self.args.list:
            self.inventory = self.example_inventory()
        elif self.args.host:
            self.inventory  = self.empty_inventory()
        else:
            self.inventory = self.empty_inventory()
        print json.dumps(self.inventroy);

    def eample_inventory(self):
        return {
            'group':{
                 'hosts':['0.0.0.0','1.1.0.1'],
                 'vars':{
                        'ansible_ssh_user':'test',
                        'ansible_ssh_private_key_file':'~/.test/insecure_private_key',
                        'example_varialbe':'value'
                }
             },
              '_meta':{
                   'hostvars':{
                        '0.0.0.10':{
                           'host_specific_var':'foo'
                        }  ,
                        '0.0.0.1': {
                            'host_specific_var' : 'bar'
                       }
                  }
               }
        }    

      def empty_inventory(self):
            return {'_meta':{'hostvars':{}}}  

      def read_cli_args(self):
              parser = argparse.ArgumentParser()
              parser.add_argument('--list',action = 'store_true')
              parser.add_argument('--host',action = 'store')
              self.args = parser.parser_args()

ExampleInventory()