example_ctrl-c.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# File: example_ctrl-c.py
#
# Part of ‘UNICORN Binance WebSocket API’
# Project website: https://github.com/oliver-zehentleitner/unicorn-binance-websocket-api
# Documentation: https://oliver-zehentleitner.github.io/unicorn-binance-websocket-api
# PyPI: https://pypi.org/project/unicorn-binance-websocket-api/
#
# Author: Oliver Zehentleitner
#         https://about.me/oliver-zehentleitner
#
# Copyright (c) 2019-2020, Oliver Zehentleitner
# All rights reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish, dis-
# tribute, sublicense, and/or sell copies of the Software, and to permit
# persons to whom the Software is furnished to do so, subject to the fol-
# lowing conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.

# Thanks to mfiro https://github.com/mfiro for sharing this example!

from unicorn_binance_websocket_api.unicorn_binance_websocket_api_manager import BinanceWebSocketApiManager

import time
import threading


def print_stream_data_from_stream_buffer(binance_websocket_api_manager):
    while True:
        if binance_websocket_api_manager.is_manager_stopping():
            exit(0)
        oldest_stream_data_from_stream_buffer = binance_websocket_api_manager.pop_stream_data_from_stream_buffer()
        if oldest_stream_data_from_stream_buffer is False:
            time.sleep(0.01)
        else:
            try:
                print(oldest_stream_data_from_stream_buffer)
            except Exception:
                # not able to process the data? write it back to the stream_buffer
                binance_websocket_api_manager.add_to_stream_buffer(oldest_stream_data_from_stream_buffer)


if __name__ == '__main__':
    binance_websocket_api_manager = BinanceWebSocketApiManager(exchange="binance.com")
    worker_thread = threading.Thread(target=print_stream_data_from_stream_buffer, args=(binance_websocket_api_manager,))
    worker_thread.start()
    kline_stream_id = binance_websocket_api_manager.create_stream(['kline', 'kline_1m'], ['btcusdt'])
    try:
        while True:
            time.sleep(60)
    except KeyboardInterrupt:
        print("\nStopping ... just wait a few seconds!")
        binance_websocket_api_manager.stop_manager_with_all_streams()