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Rainbond python cloud native development base library

Project description

Rainbond Python

基于 Rainbond 云原生平台和 Flask 框架的 Python 云原生开发基础库

使用说明

快速开始创建一个 Python 云原生组件:

rainbond -c demo-component

Parameter

处理请求与响应参数的通用类

from rainbond_python.parameter import Parameter

获取请求参数

通过 Parameter 类实例,可以获取以下信息:

  • parameter.method: 请求类型
  • parameter.headers: 请求头
  • parameter.param_url: URL中传递的参数
  • parameter.param_json: Json请求中的参数
  • parameter.param_form: 表单请求中的参数

所有信息均为字典类型,通过 json.dumps() 可以直接作为响应返回:

@app.route('/api/1.0/demo', methods=['GET', 'POST', 'PUT', 'DELETE'])
def api_demo():
    parameter = Parameter(request)
    if parameter.method == 'GET':
        return json.dumps(parameter.param_url, ensure_ascii=False), 200, []
    elif parameter.method == 'POST':
        return json.dumps(parameter.param_json, ensure_ascii=False), 200, []
    elif parameter.method == 'PUT':
        return json.dumps(parameter.param_json, ensure_ascii=False), 200, []
    elif parameter.method == 'DELETE':
        return json.dumps(parameter.param_json, ensure_ascii=False), 200, []

校验参数内容

通过 Parameter 类的 verification() 方法,可以判断参数字典是否符合要求:

    elif parameter.method == 'POST':
        if parameter.verification(checking=parameter.param_json, verify={'name': str, 'age': int}):
            return '请求参数正确', 200, []
        else:
            return '请求参数错误', 400, []

其中 checking 参数是需要校验的参数字典,通常传递 parameter.param_urlparameter.param_jsonparameter.param_form。第二个 verify 参数则是校验内容字典,需要指定 参数名参数类型 作为字典项。

DBConnect

处理 MongoDB 读写行为的通用类

from rainbond_python.db_connect import DBConnect
db = DBConnect(db='db_name', collection='collection_name')

写文档

insert_dict = {'name': 'Xiao Ming', 'age': 23}
if db.write_one_docu(docu=insert_dict):
    print('Insert success')
else:
    print('Insert failure')

文档是否存在

examine_dict = {'name': 'Xiao Ming'}
if db.does_it_exist(docu=examine_dict):
    print('Docu already exists')
else:
    print('Docu does not exist')

更新文档

更新单个匹配文档
find_dict = {'name': 'Xiao Ming'}
modify_dict = {'$set': {'name': 'Xiao Hong'}}
if db.update_docu(find_docu=find_dict, modify_docu=modify_dict):
    print('Update success')
else:
    print('Update failure')
更新全部匹配文档
find_dict = {'age': 23}
modify_dict = {'$set': {'name': '23 year old'}}
if db.update_docu(find_docu=find_dict, modify_docu=modify_dict, many=True):
    print('Update all success')
else:
    print('Update all failure')

通用方法

handle_date()

2020-10-1601481600 即日期格式或时间戳格式的字符串,处理成 Python 的 datetime.datetime 数据:

from rainbond_python.tools import handle_date
print(handle_date(date='2020-10-1'))
print(handle_date(date='2020-10-31', date_type='end'))

参考

  • Restful API : 具体的组件API开发标准
  • 12 Factor : 符合十二要素的才是云原生应用
  • RainBond : 一个开源的云原生平台

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