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{
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
"import threading\n",
"import queue\n",
"import secrets\n",
"import concurrent.futures\n",
"from typing import Callable, Any, Dict"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {},
"outputs": [],
"source": [
"class BackgroundTaskService:\n",
" def __init__(self, max_tasks: int):\n",
" self.max_tasks = max_tasks\n",
" self.task_queue = queue.Queue()\n",
" self.results = {}\n",
" self.executor = concurrent.futures.ThreadPoolExecutor(max_workers=max_tasks)\n",
" self.lock = threading.Lock() # To handle concurrent access to results dictionary\n",
" threading.Thread(target=self._worker, daemon=True).start()\n",
" self.registry={}\n",
" def register(self,func):\n",
" self.registry[func.__name__]=func\n",
" def _worker(self):\n",
" while True:\n",
" task_id, func, args = self.task_queue.get()\n",
" result = self.executor.submit(func, *args).result()\n",
" with self.lock:\n",
" self.results[task_id] = result\n",
"\n",
" def launch_task(self, func_name, *args) -> Any:\n",
" func=self.registry[func_name]\n",
" if self.task_queue.qsize() >= self.max_tasks:\n",
" return \"Queue Full\"\n",
" task_id = secrets.token_hex(16)\n",
" self.task_queue.put((task_id, func, args))\n",
" with self.lock:\n",
" self.results[task_id] = \"In Progress\"\n",
" return task_id\n",
"\n",
" def get_result(self, task_id) -> Any:\n",
" with self.lock:\n",
" return self.results.get(task_id, \"No such task\")"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "py310all",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
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"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
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