initial cacheserver

main.py

@@ -0,0 +1,32 @@
+from fastapi import FastAPI
+import requests
+from fastapi.responses import FileResponse
+import uvicorn
+import hashlib
+import pathlib
+import logging
+
+app = FastAPI()
+logger = logging.getLogger(__name__)
+
+cachepath = pathlib.Path('./cache')
+if not cachepath.is_dir():
+    cachepath.mkdir()
+
+def fetch_url(url):
+    urlhash = hashlib.sha1(url.encode('utf8')).hexdigest()
+    cachefile = (cachepath/urlhash)
+    if not cachefile.is_file():
+        logger.info(f"caching file {cachefile} for {url}")
+        r = requests.get(url, allow_redirects=True)
+        open(cachefile, 'wb').write(r.content)
+    return FileResponse(cachefile)
+
+@app.get("/{url:path}")
+async def root(url):
+    return fetch_url(url)
+
+
+
+if __name__ == "__main__":
+    uvicorn.run(app, host="0.0.0.0", port=8000)