A toy server written in Sanic to mimic an online currency exchange, with a REST and websocket API.
Project description
coinblockpro
A toy server written in Sanic to mimic an online currency exchange, with REST and websocket APIs.
Installation
coinblockpro
is available on the Python Package Index (PyPI).
pip install coinblockpro
Run
The bash script run_cbp_server
is placed in the user's bin when the
package is installed. Running:
./run_cbp_server
will produce output like the following:
[2020-10-05 19:19:37 +0100] [34227] [INFO] Creating ticker db at /tmp/tickers.db.
[2020-10-05 19:19:37 +0100] [34227] [INFO] Created db.
[2020-10-05 19:19:37 +0100] [34227] [INFO] Running websocket server.
[2020-10-05 19:19:37 +0100] [34227] [INFO] Goin' Fast @ http://0.0.0.0:8001
[2020-10-05 19:19:37 +0100] [34227] [INFO] Starting modulation coroutine.
[2020-10-05 19:19:37 +0100] [34227] [INFO] Starting worker [34227]
[2020-10-05 19:19:38 +0100] [34228] [INFO] Running REST server.
[2020-10-05 19:19:38 +0100] [34228] [INFO] Goin' Fast @ http://0.0.0.0:8000
[2020-10-05 19:19:38 +0100] [34228] [INFO] Starting worker [34228]
[2020-10-05 19:19:43 +0100] [34227] [INFO] update to market btc_ltc: 3350.505 -> 3292.16
[2020-10-05 19:19:49 +0100] [34227] [INFO] update to market ltc_dot: 2752.763 -> 2708.661
Connecting to the server
The server runs on the localhost.
The REST API is available on port 8000, while the websocket API is available on port 8001.
REST endpoints:
/full_ticker
- no parameters, returns a json response of the form:
{ 'result':
{'btc_eur': 2134.12, 'btc_usd': 2245.76} ... }
}
/single_ticker
- single parameter "market", must be given. Returns a
json response of the form:
{ 'result':
{'btc_eur': 2134.12}
}
The list of available markets can be found at:
import coinblockpro
coinblockpro.markets
Some example requests are given below:
import requests
r1 = requests.get('http://0.0.0.0:8000/full_ticker')
r2 = requests.get('http://0.0.0.0:8000/singler_ticker', params={'market': 'btc_eur'})
Websocket API
The websocket API runs on the localhost, on port 8001, and gives
real-time information on markets as they change at the /ticker_feed
endpoint.
An example configuration using the websockets
library is given below.
import websockets
import asyncio
import websockets
async def subscribe():
async with websockets.connect('ws://0.0.0.0:8001/ticker_feed') as ws:
while True:
resp = await ws.recv()
print(resp)
if __name__ == '__main__':
asyncio.run(subscribe())
Example client
UNDER CONSTRUCTION
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