Pretty tornado wrapper for making lightweight REST API services
Project description
CleanAPI
Pretty tornado wrapper for making lightweight REST API services
Installation:
pip install cleanapi
Example:
Project folders structure:
.
├── handlers
│ └── simple_handler.py
├── log
├── ssl
│ ├── ca.csr
│ └── ca.key
├── static_html
│ └── index.html
└── server_example.py
server_example.py
from cleanapi import server
if __name__ == '__main__':
# uses http protocol
server.start('http', 8080, '/', './handlers', './static_html')
# # uses https protocol
# server.start('https', 8443, '/', './handlers', './static_html',
# path_to_ssl='./ssl', ssl_certfile_name='ca.csr', ssl_keyfile_name='ca.key')
simple_handler.py
from cleanapi.server import BaseHandler
url_tail = '/example.json'
# noinspection PyAbstractClass
class Handler(BaseHandler):
"""
Test API request handler
"""
async def get(self):
self.set_status(200)
self.write({'status': 'working'})
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Cleanapy demo</title>
<link rel="icon" href="/favicon.ico" type="image/x-icon" />
</head>
<body>
<h1>Cleanapy demo page</h1>
<p>Everything OK</p>
</body>
</html>
You also may put 'favicon.ico' file to the 'static_html' folder, but it is not necessary.
Then you can test server responses on http://localhost:8080 and http://localhost:8080/example.json
See log/cleanapi.log for information about externel access to the server
Example with PydanticHandler:
pydantic_handler.py
from cleanapi.server import PydanticHandler
from pydantic import BaseModel, validator, NonNegativeInt
from typing import Optional, List
url_tail = '/pydantic.json'
class PydanticRequest(BaseModel):
"""
Pydantic dataclass for request
"""
foo: NonNegativeInt
bar: NonNegativeInt
@validator('foo', 'bar')
def _validate_foo_bar(cls, val: str):
if val == 666:
raise ValueError(f'Values of foo and bar should not be equal to 666')
return val
class PydanticResponse(BaseModel):
"""
Pydantic dataclass for response
"""
summ: Optional[NonNegativeInt]
errors: Optional[List[dict]]
# noinspection PyAbstractClass
class Handler(PydanticHandler):
"""
Example of using PydanticHandler
"""
request_dataclass = PydanticRequest
result_dataclass = PydanticResponse
# noinspection PyUnusedLocal
def process(self, request: request_dataclass) -> result_dataclass:
"""
What the handler should do
:param request: incoming request
:type request: request_dataclass
:return: processing result
:type: result_data class
"""
result = PydanticResponse(summ=request.foo + request.bar, errors=[])
if result.summ > 1000:
raise ValueError('The sum of foo and bar is more than 1000')
return result
def if_exception(self, errors: list) -> None:
"""
What to do if an exception was thrown
:param errors: list of errors
:type errors: list
"""
self.set_status(400)
self.write({'errors': errors})
return
You can not test it with a browser because of POST method using. You have to use a program like Postman or some custom util like my pynger.py
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