137 lines
3.9 KiB
Python
137 lines
3.9 KiB
Python
"""
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FastAPI application demonstrating SqrtSpace SpaceTime integration
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"""
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from fastapi import FastAPI, Request
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from fastapi.middleware.cors import CORSMiddleware
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from contextlib import asynccontextmanager
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import logging
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from sqrtspace_spacetime import SpaceTimeConfig
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from sqrtspace_spacetime.memory import MemoryPressureMonitor
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from .config import settings
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from .routers import products, analytics, ml, reports
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from .services.cache_service import SpaceTimeCache
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from .utils.memory import memory_monitor_middleware
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# Configure logging
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logging.basicConfig(level=logging.INFO)
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logger = logging.getLogger(__name__)
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# Global instances
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cache = SpaceTimeCache()
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memory_monitor = MemoryPressureMonitor(settings.SPACETIME_MEMORY_LIMIT)
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@asynccontextmanager
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async def lifespan(app: FastAPI):
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"""Application lifespan manager"""
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# Startup
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logger.info("Starting FastAPI with SqrtSpace SpaceTime")
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# Configure SpaceTime
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SpaceTimeConfig.set_defaults(
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memory_limit=settings.SPACETIME_MEMORY_LIMIT,
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external_storage=settings.SPACETIME_EXTERNAL_STORAGE,
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chunk_strategy=settings.SPACETIME_CHUNK_STRATEGY,
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compression=settings.SPACETIME_COMPRESSION
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)
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# Initialize services
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app.state.cache = cache
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app.state.memory_monitor = memory_monitor
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yield
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# Shutdown
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logger.info("Shutting down...")
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cache.cleanup()
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# Create FastAPI app
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app = FastAPI(
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title="SqrtSpace SpaceTime FastAPI Demo",
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description="Memory-efficient API with √n space-time tradeoffs",
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version="1.0.0",
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lifespan=lifespan
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)
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# Add CORS middleware
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app.add_middleware(
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CORSMiddleware,
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allow_origins=["*"],
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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)
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# Add custom middleware
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app.middleware("http")(memory_monitor_middleware)
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# Include routers
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app.include_router(products.router, prefix="/products", tags=["products"])
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app.include_router(analytics.router, prefix="/analytics", tags=["analytics"])
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app.include_router(ml.router, prefix="/ml", tags=["machine-learning"])
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app.include_router(reports.router, prefix="/reports", tags=["reports"])
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@app.get("/")
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async def root():
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"""Root endpoint"""
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return {
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"message": "SqrtSpace SpaceTime FastAPI Demo",
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"docs": "/docs",
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"memory_usage": memory_monitor.get_memory_info()
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}
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@app.get("/health")
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async def health_check():
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"""Health check endpoint"""
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memory_info = memory_monitor.get_memory_info()
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return {
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"status": "healthy",
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"memory": {
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"usage_mb": memory_info["used_mb"],
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"available_mb": memory_info["available_mb"],
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"percentage": memory_info["percentage"],
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"pressure": memory_monitor.check().value
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},
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"cache": cache.get_stats()
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}
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@app.get("/system/memory")
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async def system_memory():
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"""Detailed memory statistics"""
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import psutil
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import os
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process = psutil.Process(os.getpid())
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return {
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"process": {
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"rss_mb": process.memory_info().rss / 1024 / 1024,
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"vms_mb": process.memory_info().vms / 1024 / 1024,
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"cpu_percent": process.cpu_percent(interval=0.1),
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"num_threads": process.num_threads()
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},
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"spacetime": {
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"memory_limit": settings.SPACETIME_MEMORY_LIMIT,
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"external_storage": settings.SPACETIME_EXTERNAL_STORAGE,
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"pressure_level": memory_monitor.check().value,
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"cache_stats": cache.get_stats()
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},
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"system": {
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"total_memory_mb": psutil.virtual_memory().total / 1024 / 1024,
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"available_memory_mb": psutil.virtual_memory().available / 1024 / 1024,
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"memory_percent": psutil.virtual_memory().percent,
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"swap_percent": psutil.swap_memory().percent
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}
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}
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if __name__ == "__main__":
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import uvicorn
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uvicorn.run(app, host="0.0.0.0", port=8000) |