thrift-converter 0.0.1

Thrift converting tools: json2thrift, thrift2json

thrift_converter

A python implemented tool for converting between json and thrift.

Install

pip install thrift-converter

Why build this tool:

1. Class in thrift gen-py use thrift_spec() to deserialize, but the Enum object is simply treated as I32, while in json, it's stored as string of name.
2. set is not json serializable in standard json, we can treat {'a', 'b', ..} as {None: ['a', 'b', ...]} for distinction.

How to:

1. Parsing thrift ast by ptsd
2. Deserializing thrift object by walking through ast recursively.

Todo:

• learn ply from ptsd

Others

• introspection-of-thrift-enums-in-python discussed end with waiting for thrift upgrade(support for python enums)
• thrift_json_decoder in twitter.common can't handle with Enum
• thrift_json_convertor based on thriftpy too heavy

Usage

example: demo

import json
from thrift_converter import JsonThriftConverter, ThriftJsonConverter

thrift_file = 'demo.thrift'
object_name = 'Group'

json2thrift = JsonThriftConverter(thrift_file).convert
thrift2json = ThriftJsonConverter(thrift_file).convert

obj = gen_fake_obj()
# Group(id=-1, worker_map={999: Worker(id=999, tasks=[Task(id=727, status=0, action=888, valid=True, msgs={'msg'})])})

js = thrift2json(obj, object_name)
js_str = json.dumps(js)
# {"id": -1, "worker_map": {"999": {"id": 999, "tasks": [{"id": 727, "status": 0, "action": "UP", "valid": true, "msgs": {"null": ["msg"]}}]}}}

obj = json2thrift(json.loads(js_str), object_name)
# Group(id=-1, worker_map={999: Worker(id=999, tasks=[Task(id=727, status=0, action=888, valid=True, msgs={'msg'})])})