init

.gitignore

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+__pycache__

Dockerfile

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+FROM python:latest
+
+WORKDIR /usr/src/app
+
+COPY requirements.txt ./
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+CMD [ "python", "./app.py" ]

app.py

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+import os
+from threading import Thread
+import json
+from rethinkdb import RethinkDB
+from pybit.unified_trading import WebSocket
+from time import sleep
+
+r = RethinkDB()
+
+# RethinkDB settings
+RDB_HOST = os.environ.get('RETHINKDB_URL')
+RDB_PORT = os.environ.get('RETHINKDB_PORT')
+DB_NAME = "finfree"
+TABLE_NAME = 'conditions'
+
+# Initialize RethinkDB connection
+rdb_conn = r.connect(host=RDB_HOST, port=RDB_PORT, db=DB_NAME)
+
+# WebSocket setup
+WS_URL = "wss://stream.bybit.com/v5/public/linear"
+ws = WebSocket(
+    testnet=True,
+    channel_type="linear",
+)
+
+subscribed = set()
+
+def fetch_symbols():
+    try:
+        symbols = r.table(TABLE_NAME).pluck('symbol').run(rdb_conn)
+        return list(set([symbol['symbol'] for symbol in symbols]))
+    except Exception as e:
+        print(f"Error fetching symbols: {e}")
+        return []
+
+def handle_message(message):
+    print(message)
+
+def watch_symbols_table():
+    feed = r.table(TABLE_NAME).changes().run(rdb_conn)
+    for change in feed:
+        print(f"Change detected: {change}")
+        if change['new_val'] and not change['old_val']:  # New symbol added
+            symbol = change['new_val']['symbol']
+            subscribe_to_symbol(symbol)
+
+def subscribe_to_symbol(symbol):
+    if symbol not in subscribed:
+        subscribed.add(symbol)
+        ws.ticker_stream(
+            symbol=symbol,
+            callback=handle_message
+        )
+
+if __name__ == "__main__":
+    for symbol in fetch_symbols():
+        subscribe_to_symbol(symbol)
+    
+    watch_symbols_table()
+
+    while True:
+        sleep(1)

requirements.txt

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+flask
+rethinkdb
+pybit