What is it?

A python jsend module with simplication and modification attached.

Note:

python version: >=3.5

(For python2.7 version, use jsend_version < 0.9, eg: https://github.com/darkdarkfruit/jsend/releases/tag/v_0.7.1)

JSEND MODIFIED DRAFT

## Original jsend link:
[https://labs.omniti.com/labs/jsend](https://labs.omniti.com/labs/jsend)


## What's modified:
### Fields:


|--------+--------+----------+----------+-------------------------------------------------------|
| Field  | type   | Required | Optional | Meaning                                               |
|--------+--------+----------+----------+-------------------------------------------------------|
| status | string | * (S/F)  |          | Is the response successful?                           |
| code   | any    |          | *        | CODE for application logic(Normally it is an integer) |
| data   | any    |          | *        | Data(payload) of the response                         |
| desc   | any    |          | *        | Description: normally it's a helping infomation       |
| meta   | any    |          | *        | eg: servers/ips chain in distributed env.             |
|        |        |          |          |                                                       |
|--------+--------+----------+----------+-------------------------------------------------------|

• Field:status is always in state: "S" or "F"(represents "Successful", "Failed"), no 3th state.

  • original states: ('success', 'fail', 'error') It's too much pain to distinguish fail or error, so 2 states("S", "F") are enough.

• (-) Removed original "message" field, as it is vague. (A whole message? A helping text?)

• (+) Add field:desc to describe this message. (The field is optional)

• (+) Add field:meta to add some meta infomation. (eg: network chain, node name, proxy info, ...)

Install:

pip install python-jsend or (pip3 install python-jsend) Or download the tarbal, decompress it, then run "python setup.py install"

Test:

  > pip3 install pytest
  > whereis pytest
  > pytest: /usr/local/bin/pytest
  > pytest --version
  > This is pytest version 3.3.2, imported from /usr/local/lib/python3.6/site-packages/pytest.py
  >
  > pytest jsend/

• Very simple: only need to use 1 class and 2 functions.
• 1 class: Message
• 2 functions: make_successful_message, make_failed_message

Usage: (sample)

Python 3.6.2 (default, Aug 10 2017, 10:07:10) 
Type 'copyright', 'credits' or 'license' for more information
IPython 6.1.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: import jsend
   ...: 

In [2]: jsend.__version__
   ...: 
Out[2]: '0.9'

In [3]: msg = jsend.make_successful_message(code=0, data={'payload' : 'yes'})
   ...: 

In [4]: msg
Out[4]: 
{'code': 0,
 'data': {'payload': 'yes'},
 'desc': None,
 'meta': None,
 'status': 'S'}

In [5]: msg.dumps()
Out[5]: '{"status": "S", "code": 0, "data": {"payload": "yes"}, "desc": null, "meta": null}'

In [6]: msg.dumps(skip_none=True)
Out[6]: '{"status": "S", "code": 0, "data": {"payload": "yes"}}'

In [7]: msg_failed = jsend.make_failed_message()
   ...: 

In [8]: msg_failed
Out[8]: {'code': None, 'data': None, 'desc': None, 'meta': None, 'status': 'F'}

In [9]: msg_failed.dumps()
Out[9]: '{"status": "F", "code": null, "data": null, "desc": null, "meta": null}'

In [10]: msg_failed.dumps(skip_none=True)
Out[10]: '{"status": "F"}'

In [11]: msg_loaded = jsend.Message.loads(msg.dumps())
    ...: 

In [12]: msg_loaded
Out[12]: 
{'code': 0,
 'data': {'payload': 'yes'},
 'desc': None,
 'meta': None,
 'status': 'S'}

In [13]: msg_loaded.data = 0

In [14]: msg_loaded = jsend.Message.loads(msg.dumps())
    ...: 

In [15]: msg_loaded
Out[15]: 
{'code': 0,
 'data': {'payload': 'yes'},
 'desc': None,
 'meta': None,
 'status': 'S'}

In [16]: msg_loaded.dumps()
Out[16]: '{"status": "S", "code": 0, "data": {"payload": "yes"}, "desc": null, "meta": null}'

In [17]: msg_loaded.dumps(skip_none=True)
Out[17]: '{"status": "S", "code": 0, "data": {"payload": "yes"}}'

In [18]: