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Ultra-performant Loki logger for Python applications (asyncio + aiohttp)

Project description

Loki Console Logger for Python 🚀

PyPI version Python versions License

A high-performance console logger for Python that automatically sends all print, logging, exceptions, and custom events to Grafana Loki — using fully asyncio + aiohttp.
Ideal for observability, real-time debugging, and log aggregation in microservices or modern async applications.


✨ Features

  • 🚀 Fully asynchronous (non-blocking) sending with aiohttp
  • 🧠 Dynamic and static labels per log stream
  • 🧹 Batching and auto-flush for high throughput
  • 💥 Captures all print() calls, logging messages and unhandled exceptions
  • 🔥 Lightweight, zero external dependencies (only aiohttp)
  • 🛡️ Robust error handling, resilient to network failures

📦 Installation

pip install loki-console-logger-python

🚀 Quickstart

from loki_console_logger_python import LokiLogger
from loki_console_logger_python.config import LokiLoggerOptions

options = LokiLoggerOptions(
    url="https://loki.elvenobservability.com/loki/api/v1/push",
    tenant_id="your-tenant-id",
    app_name="your-application",
    auth_token="your-optional-token",
    batch_size=10,             # Optional (default 10)
    flush_interval=2,          # Optional (default 2 seconds)
    labels={"env": "production"},
    dynamic_labels={"hostname": lambda: "server-001"},
)

logger = LokiLogger(options)

# Track custom events
logger.track_event("user_signup", {"user_id": 123})

# Capture print automatically
print("Hello from Python!")

# Capture uncaught exceptions automatically
raise Exception("Test error!")

⚙️ Configuration Options

Option Description Default
url URL to Loki HTTP Push API
tenant_id X-Scope-OrgID for multi-tenancy
app_name Application name label
auth_token Bearer token for authorization None
batch_size Max events before flushing 10
flush_interval Max time (seconds) before flushing 2
labels Fixed labels per stream {}
dynamic_labels Dynamic labels (functions) {}

🤝 Contributing

Contributions are welcome! Feel free to open issues, submit pull requests, or suggest new features.

Let's make observability in Python faster and better! 🚀

  1. Fork this repo
  2. Create a feature branch
  3. Submit a PR!

📄 License

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


Created with ❤️ by Leonardo Zwirtes

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