nacosx 0.1.dev2

A decorator-based Python library for automatic Nacos service registration

NacosX

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NacosX is a decorator-based Python library designed to make service registration and discovery with Nacos effortless.
It automates the entire lifecycle — registration, heartbeat maintenance, re-registration on failure, and graceful shutdown — with just one decorator.

Built on top of nacos-sdk-python, NacosX provides a higher-level, decorator-based abstraction for seamless integration.

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🌟 Key Features

• 🚀 One-line decorator to register your gRPC or HTTP service with Nacos
• 💓 Automatic heartbeat with failure detection and self-healing
• 🔄 Retry mechanism for registration and reconnection
• 🧘 Graceful shutdown with SIGINT / SIGTERM handling
• 🧩 Thread-safe and async-compatible, supporting both sync and async functions
• 🔧 Custom metadata and namespace support
• 📦 Designed for Kubernetes/CCE environments where stability and self-healing matter

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📦 Installation

pip install nacosx

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🔧 Quick Start

Basic Example

import time
from nacosx import nacos_registry

@nacos_registry(
    nacos_addr="127.0.0.1:8848",
    namespace="dev",
    service_name="example-service",
    service_addr="192.168.0.101:50051",
)
def main():
    print("Service running...")
    while True:
        time.sleep(1)

if __name__ == "__main__":
    main()

✅ What Happens Automatically:

• ✓ Registers example-service to Nacos
• ✓ Sends periodic heartbeats
• ✓ Re-registers if heartbeats fail multiple times
• ✓ Deregisters gracefully on Ctrl+C or container termination

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🎯 Advanced Usage

Custom Metadata

@nacos_registry(
    nacos_addr="127.0.0.1:8848",
    service_name="my-service",
    service_addr="192.168.1.10:8080",
    metadata={"version": "1.0.0", "env": "production"},
)
def run_service():
    # Your service logic
    pass

Async Function Support

import asyncio
from nacosx import nacos_registry

@nacos_registry(
    nacos_addr="127.0.0.1:8848",
    service_name="async-service",
    service_addr="0.0.0.0:8080",
)
async def async_main():
    print("Async service running...")
    while True:
        await asyncio.sleep(1)

if __name__ == "__main__":
    asyncio.run(async_main())

Context Manager (Manual Control)

For manual lifecycle control, use NacosService as a context manager:

from nacosx import NacosService
import time

def run_my_service():
    print("Service is running...")
    time.sleep(10)

with NacosService(
    nacos_addr="127.0.0.1:8848",
    namespace="dev",
    service_name="my-service",
    service_ip="192.168.1.10",
    service_port=8080,
    metadata={"version": "1.0.0"},
) as svc:
    run_my_service()
    # Then register to Nacos when service is ready
    svc.start()
    # Service will be automatically deregistered when exiting the context

Or without context manager:

from nacosx import NacosService

svc = NacosService(
    nacos_addr="127.0.0.1:8848",
    service_name="my-service",
    service_ip="192.168.1.10",
    service_port=8080,
)

try:
    svc.start()  # Register and start heartbeat
    # Your service logic here
    while True:
        time.sleep(1)
finally:
    svc.stop()  # Deregister and stop heartbeat

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🛠️ Configuration Options

Parameter	Type	Required	Default	Description
nacos_addr	str	✅	-	Nacos server address (e.g., 127.0.0.1:8848)
service_name	str	✅	-	Service name to register
service_addr	str	✅	-	Service address (IP:PORT)
namespace	str	❌	public	Nacos namespace
group_name	str	❌	DEFAULT_GROUP	Service group name
cluster_name	str	❌	DEFAULT	Cluster name
metadata	dict	❌	{}	Custom metadata
heartbeat_interval	int	❌	5	Heartbeat interval in seconds
max_retry	int	❌	3	Max retry attempts for registration

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🔄 How It Works

1. Registration: When your decorated function starts, NacosX registers the service with Nacos
2. Heartbeat: A background thread sends periodic heartbeats to keep the service alive
3. Self-Healing: If heartbeats fail consecutively, NacosX attempts re-registration
4. Graceful Shutdown: On SIGINT/SIGTERM, the service is deregistered before exit

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📝 Requirements

• Python >= 3.7
• nacos-sdk-python >= 2.0.0, < 3.0.0

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📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

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🙏 Acknowledgments

• Inspired by the need for simpler Nacos integration in Python microservices
• Built with ❤️ for the Python community

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📮 Contact

If you have any questions or suggestions, please open an issue on GitHub.

GitHub: https://github.com/ProgrammerPlus1998/NacosX