# BetAgr-common - base async api-clients for betagr-project wrote with aiohttp
A set of tools, utilities and base async api-classes for maintaining the infrastructure of betagr-project services.
### Requirements
* python>=3.6
* aiohttp>=3.6
### Usage
```
pip install betagr-common
# or only for user
python -m pip install --user betagr-common
# or for pipenv
pipenv install betagr-common
```
BetAgr-common ships with two base api-classes: BaseClient and BaseClientSSO.
##### BaseClient
It is a base class provides a basic REST API methods which are simple wrapper over a aiohttp.request.
Сlass also implements basic logging of client requests and handling cookies within one client, since the connection session exists only during one request.
Api-clients of each services should be inherited from the BaseClient.
```python
from common.rest_client.base_client import BaseClient
class BakeryClient(BaseClient):
_host = 'www.some-bakery.com'
_port = 8000
def __init__(self, headers):
super().__init__(headers=headers)
async def bake_bread(self, bread_flour='first-grade'):
body = {'flour': bread_flour}
api_uri = 'api/bake-bread'
return await self.post(api_uri, body=body)
```
```python
import asyncio
import BakeryClient
db_orders = {'John Doe': {'flour': 'first-grade'},
'Anderson': {'flour': 'second-grade'}}
async def main():
async for client in db_orders:
custom_headers = {'Content-Type': 'application/json'}
bakery_client = BakeryClient(custom_headers)
bread_flour_type = db_orders[client].get('flour')
response = await bakery_client.bake_bread(bread_flour_type)
assert response.status == 200 # bread was bake!
loop = asyncio.get_event_loop()
loop.run_until_complete(main())
```
##### BaseClientSSO
Api abstraction for sso-client with the release of basic methods:
* sign_up
* sign_in
* sign_out
* reset_password
```python
import os
import asyncio
from common.rest_client.base_client_sso import BaseClientSSO
async def main():
# env should contains 'SSO_API_HOST' and 'SSO_API_PORT' variables
headers = {'Content-Type': 'application/x-www-form-urlencoded'}
sso_client = BaseClientSSO(headers)
body = {'username': 'john doe',
'password': 'qwerty'}
response = await sso_client.sign_up(body)
print(response) # ClientResponse -> defaults
# {'json': {},
# 'status': 200,
# 'headers': {'Content-Type: "application/json"},
# 'raw_content': b''}
body = {'username': 'john doe',
'password': 'qwerty'}
response = await sso_client.sign_in(body)
print(response)
body = {'username': 'john doe',
'old_password': 'qwerty',
'new_password': 'qwerty'}
response = await sso_client.reset_password(body)
print(response)
response = await sso_client.sign_out()
print(response)
loop = asyncio.get_event_loop()
loop.run_until_complete(main())
```
Environment variables are used to determine url/connection parameters in base classes:
| env variable | value |
| --- | --- |
| SSO_API_HOST | localhost, www.example.com |
| SSO_API_PORT | 8080 |
| PARSER_API_HOST | localhost, www.example.com |
| PARSER_API_PORT | 8080 |
| AGGREGATOR_API_HOST | localhost, www.example.com |
| AGGREGATOR_API_PORT | 8080 |
| COMMON_API_CLIENT_LOGGING_LEVEL | 40 |
see numeric represents logging level here: https://docs.python.org/3/library/logging.html#logging-levels
