ConoHaでサーバーを自動作成するPythonスクリプト

#!/bin/python

from requests.exceptions import *
import base64
import json
import requests
import sys

''' === Setting Parameters ============================= '''
APIUSER = '{APIユーザー名}'
APIPASS = '{APIパスワード}'
TENANT = '{テナントID}'
ROOTPASS = '{ROOTパスワード}'
SECGRP = '{セキュリティグループ}'
STAG = '{ネームタグ}'
IMAGENAME = '{VPSイメージ名}'
FLAVORNAME = "{VPSプラン名}"
SCRIPTPATH = '{スタートアップスクリプトのパス}'
''' ==================================================== '''


def get_conoha_token(tid, user, passwd):
    ''' Function of getting a text of conoha token'''
    _api = 'https://identity.tyo1.conoha.io/v2.0/tokens'
    _header = {'Accept': 'application/json'}
    _body = {
        "auth": {
            "passwordCredentials": {
                "username": user,
                "password": passwd
                },
            "tenantId": tid
        }}

    try:
        _res = requests.post(_api, data=json.dumps(_body), headers=_header)
        return (json.loads(_res.text))["access"]["token"]["id"]
    except (ValueError, NameError, ConnectionError, RequestException, HTTPError) as e:
        print('Error: Could not get ConoHa token text.', e)
        sys.exit()
        

def get_flavor_uuid(tid, token, flavorname):
    ''' Function of getting Conoha Server Plan ID from Server Plan Name '''
    _api = 'https://compute.tyo1.conoha.io/v2/' + tid + '/flavors/detail'
    _header = {'Accept': 'application/json', 'X-Auth-Token': token}
    try:
        _res = requests.get(_api, headers=_header)
        for server in json.loads(_res.content)['flavors']:
            if server['name'] == flavorname:
                return server['id']
    except (ValueError, NameError, ConnectionError, RequestException, HTTPError) as e:
        print('Error: Could not get ConoHa flavor uuid.', e)
        sys.exit()


def get_image_uuid(tid, token, imagename):
    ''' Function of getting Conoha Server Image ID from Server Image Name '''
    _api = 'https://compute.tyo1.conoha.io/v2/' + tid + '/images/detail'
    _header = {'Accept': 'application/json', 'X-Auth-Token': token}
    
    try:
        _res = requests.get(_api, headers=_header)
        for server in json.loads(_res.content)['images']:
            if server['name'] == imagename:
                return server['id']
    except (ValueError, NameError, ConnectionError, RequestException, HTTPError) as e:
        print('Error: Could not get ConoHa image uuid.¥n', e)
        sys.exit()


def get_startup_base64(src_path):
    ''' Function of transforming from shell script to base64 value '''
    with open(src_path, encoding='utf-8') as f:
        _script_text = f.read()

    try:
        return base64.b64encode(_script_text.encode('utf-8')).decode()
    except (ValueError, NameError, ConnectionError, RequestException, HTTPError) as e:
        print('Error: Could not get base64 value of startup script.¥n', e)
        sys.exit()
    

def create_server(tid, sgroup, stag, token, admin_pass, fid, iid, Sval):
    ''' Function of creatting New Server '''
    _api = 'https://compute.tyo1.conoha.io/v2/' + tid + '/servers'
    _header = {'Accept': 'application/json', 'X-Auth-Token': token}
    _body = {"server": {
                "security_groups": [{"name": sgroup}],
                "metadata": {"instance_name_tag": stag},
                "adminPass": admin_pass,
                "flavorRef": fid,
                "imageRef": iid,
                "user_data": Sval
        }}

    try:
        _res = requests.post(_api, data=json.dumps(_body), headers=_header)
        if json.loads(_res.text)['server']:
            print('Success: WordPress new server started!')
    except (ValueError, NameError, ConnectionError, RequestException, HTTPError) as e:
        print('Error: Could not create server.', e)
        sys.exit()
    except KeyError:
        print('Error Code   : {code}¥nError Message: {res}'.format(
                code=_res.text['badRequest']['message'],
                res=_res.text['badRequest']['code']))
        sys.exit()

def main():
    # Get API token
    Token = get_conoha_token(TENANT, APIUSER, APIPASS)

    # Get Flavor UUID
    Fuuid = get_flavor_uuid(TENANT, Token, FLAVORNAME)

    # Get Flavor UUID
    Iuuid = get_image_uuid(TENANT, Token, IMAGENAME)

    # Get Base64 value of Startup script
    Svalue = get_startup_base64(SCRIPTPATH)

    # Create New Server
    create_server(TENANT, SECGRP, STAG, Token, ROOTPASS, Fuuid, Iuuid, Svalue)
        
if __name__ == '__main__':
    main()