{"id":31703899,"url":"https://github.com/brian14708/duron","last_synced_at":"2026-05-14T20:07:13.185Z","repository":{"id":315903371,"uuid":"1061171843","full_name":"brian14708/duron","owner":"brian14708","description":"🌀 Durable async runtime for Python","archived":false,"fork":false,"pushed_at":"2026-05-06T04:30:56.000Z","size":1283,"stargazers_count":9,"open_issues_count":2,"forks_count":0,"subscribers_count":0,"default_branch":"main","last_synced_at":"2026-05-06T06:33:59.838Z","etag":null,"topics":["asyncio","durable-execution","python3"],"latest_commit_sha":null,"homepage":"https://brian14708.github.io/duron/","language":"Python","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/brian14708.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":null,"dco":null,"cla":null}},"created_at":"2025-09-21T11:46:06.000Z","updated_at":"2026-05-06T04:30:58.000Z","dependencies_parsed_at":"2025-09-21T15:12:12.887Z","dependency_job_id":"ca2fd701-257c-4dd2-8c68-c4243da5af54","html_url":"https://github.com/brian14708/duron","commit_stats":null,"previous_names":["brian14708/duron"],"tags_count":3,"template":false,"template_full_name":null,"purl":"pkg:github/brian14708/duron","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/brian14708%2Fduron","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/brian14708%2Fduron/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/brian14708%2Fduron/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/brian14708%2Fduron/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/brian14708","download_url":"https://codeload.github.com/brian14708/duron/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/brian14708%2Fduron/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":33041268,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-05-13T13:14:54.681Z","status":"online","status_checked_at":"2026-05-14T02:00:06.663Z","response_time":57,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["asyncio","durable-execution","python3"],"created_at":"2025-10-08T22:45:49.843Z","updated_at":"2026-05-14T20:07:13.177Z","avatar_url":"https://github.com/brian14708.png","language":"Python","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Duron\n\n[![CI](https://github.com/brian14708/duron/actions/workflows/ci.yaml/badge.svg)](https://github.com/brian14708/duron/actions/workflows/ci.yaml)\n[![PyPI - Version](https://img.shields.io/pypi/v/duron)](https://pypi.org/project/duron)\n[![Python Versions](https://img.shields.io/pypi/pyversions/duron)](https://pypi.org/project/duron)\n[![License](https://img.shields.io/github/license/brian14708/duron.svg)](https://github.com/brian14708/duron/blob/main/LICENSE)\n\n**Durable workflows for modern Python.** Build resilient async applications with native support for streaming and interruption.\n\n- 💬 **Interactive workflows** — AI agents, chatbots, and human-in-the-loop automation with bidirectional streaming\n- ⚡ **Crash recovery** — Deterministic replay from append-only logs means workflows survive restarts\n- 🎯 **Graceful interruption** — Cancel or redirect operations mid-execution with signals\n- 🔌 **Zero dependencies** — Pure Python built on asyncio, fully typed\n- 🧩 **Pluggable storage** — Bring your own database or filesystem backend\n\n## Install\n\nDuron requires **Python 3.10+**.\n\n```bash\nuv pip install duron\n```\n\n## Quickstart\n\n```python\n# /// script\n# dependencies = [\"duron\"]\n# ///\n\nimport asyncio\nfrom pathlib import Path\nfrom typing import Optional, TypedDict\nimport duron\nfrom duron.contrib.storage import FileLogStorage\n\n\nclass Event(TypedDict):\n    \"\"\"\n    Event type for communicating workflow progress and approvals.\n\n    Fields:\n        message: Log or status message for the user.\n        approval_id: Durable future ID to request approval (None for normal logs).\n    \"\"\"\n\n    message: str\n    approval_id: Optional[str]\n\n\n# -----------------------\n# Effect definitions\n# -----------------------\n\n\n@duron.effect\nasync def check_fraud(amount: float, recipient: str) -\u003e float:\n    \"\"\"Simulate a risk engine returning a fraud probability.\"\"\"\n    print(\"Executing risk check...\")\n    await asyncio.sleep(0.5)\n    return 0.85\n\n\n@duron.effect\nasync def execute_transfer(amount: float, recipient: str) -\u003e str:\n    \"\"\"Simulate a real transfer execution.\"\"\"\n    print(\"Executing transfer...\")\n    await asyncio.sleep(1)\n    return f\"Transferred ${amount} to {recipient}\"\n\n\n# -----------------------\n# Durable workflow\n# -----------------------\n\n\n@duron.durable\nasync def transfer_workflow(\n    ctx: duron.Context,\n    amount: float,\n    recipient: str,\n    events: duron.StreamWriter[Event] = duron.Provided,\n) -\u003e str:\n    \"\"\"\n    Durable workflow to execute a transfer with fraud detection\n    and optional manager approval.\n    \"\"\"\n    async with events:\n        # Log start of transfer\n        await events.send({\n            \"message\": f\"Checking transfer: ${amount} → {recipient}\",\n            \"approval_id\": None,\n        })\n\n        # Step 1: Fraud check\n        risk = await ctx.run(check_fraud, amount, recipient)\n\n        # Step 2: Approval required if high risk\n        if risk \u003e 0.8:\n            approval_id, approval = await ctx.create_future(bool)\n            await events.send({\n                \"message\": \"⚠️  High risk - approval required\",\n                \"approval_id\": approval_id,\n            })\n\n            if not await approval:\n                await events.send({\n                    \"message\": \"❌ Transfer rejected by manager\",\n                    \"approval_id\": None,\n                })\n                return \"Transfer rejected\"\n\n        # Step 3: Execute transfer\n        result = await ctx.run(execute_transfer, amount, recipient)\n        await events.send({\"message\": f\"✓ {result}\", \"approval_id\": None})\n        return result\n\n\n# -----------------------\n# Host process\n# -----------------------\n\n\nasync def main():\n    \"\"\"\n    Run the workflow locally with file-based state storage.\n    \"\"\"\n    async with duron.Session(FileLogStorage(Path(\"transfer.jsonl\"))) as session:\n        task = await session.start(transfer_workflow, 10000.0, \"suspicious-account\")\n        stream = await task.open_stream(\"events\", \"r\")\n\n        async def handle_events():\n            async for event in stream:\n                # Always print message\n                print(event[\"message\"])\n\n                # If approval_id is present, prompt for manager decision\n                # If the future is not pending, it means it was already resolved (e.g., workflow resumed)\n                if event[\"approval_id\"] and task.is_future_pending(\n                    event[\"approval_id\"]\n                ):\n                    decision = await asyncio.to_thread(input, \"Approve? (y/n): \")\n                    await task.complete_future(\n                        event[\"approval_id\"], result=(decision.lower() == \"y\")\n                    )\n\n        await asyncio.gather(task.result(), handle_events())\n\n\nif __name__ == \"__main__\":\n    asyncio.run(main())\n```\n\n## Next steps\n\n- Read the [getting started guide](https://brian14708.github.io/duron/getting-started/)\n- Explore a more advanced example with streams and signals: [examples/agent.py](https://github.com/brian14708/duron/blob/main/examples/agent.py)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fbrian14708%2Fduron","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fbrian14708%2Fduron","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fbrian14708%2Fduron/lists"}