Slack Logger Module

This module provides a logging solution that integrates with Winston for local logging and Slack for real-time alerts. It is designed to facilitate easy monitoring and alerting for Node.js applications.

Features

• Local Logging: Logs info, error, and combined logs to local files.
• Slack Alerts: Sends log messages to a configured Slack channel for real-time alerting.
• Flexible Configuration: Uses environment variables for easy configuration without modifying code.

Prerequisites

To use this module, you need:

• Node.js installed on your system.
• A Slack workspace and the ability to create Incoming Webhooks.

Installation

1. Clone the repository or copy the provided code into a new file in your project.
2. Install dependencies by running npm install winston @slack/webhook dotenv.

Configuration

1. Set up an Incoming Webhook in Slack:
   • Go to your Slack App settings.
   • Navigate to "Incoming Webhooks", and create a new webhook. Copy the webhook URL.
2. Configure environment variables:
   • Create a .env file in the root of your project.
   • Add SLACK_WEBHOOK_URL=your_webhook_url_here with the URL you obtained from Slack.

Usage

1. Import the logger into your Node.js application:

const logger = require('./path_to_logger');

2. Log messages using the following methods:

logger.info('Informational message');
logger.error('Error message');

• Info level messages will be logged to both the console and the logs/combined.log file.
• Error level messages will be logged to the console, logs/error.log, and logs/combined.log file.
• If the Slack webhook URL is configured, info and error level messages will also be sent to the Slack channel.

Logging Levels

This module uses Winston's default logging levels:

• error: 0
• warn: 1
• info: 2
• http: 3
• verbose: 4
• debug: 5
• silly: 6

File Structure

• logs/: Directory for log files.
  • error.log: Logs all error level messages.
  • combined.log: Logs all messages.

Contributing

Contributions are welcome! Please feel free to submit a pull request or create an issue for any bugs or feature requests.

License

MIT License - see the LICENSE file for details.