83 lines
2.5 KiB
Python
83 lines
2.5 KiB
Python
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#!/usr/bin/env python3
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"""
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Example: External Factors Service using ServiceBase
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"""
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import asyncio
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from service_base import ServiceBase, get_logger, run_scheduled
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class ExFService(ServiceBase):
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"""
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External Factors Service - 0.5s aggressive oversampling
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"""
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def __init__(self):
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super().__init__(
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name='exf',
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check_interval=30,
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max_retries=3,
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notify_systemd=True
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)
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self.indicators = {}
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self.cycle_count = 0
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async def run_cycle(self):
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"""Main cycle - runs every 0.5s"""
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self.cycle_count += 1
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# Fetch indicators with retry
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await self._fetch_with_retry('basis')
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await self._fetch_with_retry('spread')
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await self._fetch_with_retry('imbal_btc')
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await self._fetch_with_retry('imbal_eth')
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# Push to Hazelcast
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await self._push_to_hz()
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# Log every 100 cycles
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if self.cycle_count % 100 == 0:
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self.logger.info(f"Cycle {self.cycle_count}: indicators updated")
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# Sleep for 0.5s (non-blocking)
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await asyncio.sleep(0.5)
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@ServiceBase.retry_with_backoff
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async def _fetch_with_retry(self, indicator: str):
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"""Fetch single indicator with automatic retry"""
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# Your fetch logic here
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self.indicators[indicator] = {'value': 0.0, 'timestamp': time.time()}
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async def _push_to_hz(self):
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"""Push to Hazelcast with retry"""
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try:
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# Your HZ push logic here
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pass
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except Exception as e:
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self.logger.error(f"HZ push failed: {e}")
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raise
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async def health_check(self) -> bool:
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"""Custom health check"""
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# Check if indicators are fresh
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now = time.time()
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for name, data in self.indicators.items():
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if now - data.get('timestamp', 0) > 2.0:
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self.logger.warning(f"Stale indicator: {name}")
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return False
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return True
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# Alternative: Simple scheduled function
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def simple_exf_task():
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"""Simple version without full service overhead"""
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logger = get_logger('dolphin.exf.simple')
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logger.info("Running ExF fetch")
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# Your logic here
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if __name__ == '__main__':
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import time
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# Option 1: Full service with all features
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service = ExFService()
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service.run()
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# Option 2: Simple scheduled task
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# run_scheduled(simple_exf_task, interval_seconds=0.5, name='exf')
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