Better RSS Feed Notifier

The Better RSS Feed Notifier is a high-performance Node.js application that monitors RSS feeds, sends notifications to Discord, and commits updates to a GitHub repository. It leverages asynchronous programming, optimized libraries, and follows best practices to deliver efficient and reliable performance.

Features

• Monitors multiple RSS feeds for new updates
• Sends real-time notifications to Discord using webhooks
• Commits updates to a GitHub repository as a CSV file
• Handles rate limiting and error retries for seamless operation
• Supports graceful shutdown and process signal handling
• Adheres to SOLID principles for clean and maintainable code
• Retrieves feed URLs from a GitHub repository for easy configuration management
• Handles connection resets, network failures, and feed parsing errors with retries
• Converts dates to Manila time zone for consistent formatting
• Sorts and deduplicates records before committing to GitHub
• Utilizes a logger for comprehensive logging and error tracking
• Sends error notifications to a separate Discord webhook for better error monitoring
• Validates configuration file properties to ensure proper setup
• Modular design with separate classes for Discord notifications, GitHub integration, and feed parsing

Performance

The Better RSS Feed Notifier is designed with performance and efficiency in mind. It utilizes the following techniques and libraries to achieve optimal performance:

• Asynchronous programming with async/await for non-blocking I/O operations
• axios library for fast and efficient HTTP requests
• htmlparser2 library for quick parsing of RSS feeds
• @octokit/rest for seamless integration with the GitHub API
• csv-parse and csv-stringify for efficient CSV parsing and generation
• luxon for accurate date and time manipulation

With its optimized code and carefully selected dependencies, the RSS Feed Notifier can handle a large number of RSS feeds and deliver notifications in real-time, ensuring that you stay up-to-date with the latest updates.

Installation

1. Clone the repository:

   git clone https://github.com/llegomark/rss-feed-notifier
   

2. Install the dependencies:

   cd rss-feed-notifier
   npm install
   

3. Create a config.json file in the project root with the following structure:

   {
     "discordWebhookUrl": "YOUR_DISCORD_WEBHOOK_URL",
     "discordErrorWebhookUrl": "YOUR_DISCORD_ERROR_WEBHOOK_URL",
     "checkInterval": 300000,
     "githubToken": "YOUR_GITHUB_ACCESS_TOKEN",
     "githubRepo": "YOUR_GITHUB_REPOSITORY",
     "githubOwner": "YOUR_GITHUB_USERNAME",
     "feedUrlsPath": "feed_urls.json",
     "sendDiscordNotifications": false,
     "maxRetries": 3,
     "retryDelay": 5000,
     "processedStateFile": "processed_state.json",
     "dataFile": "data.csv",
     "maxItemsPerFeed": 100
   }

4. Create a feed_urls.json file in the project root with the following structure:

   [
     "https://example.com/feed/",
     "https://www.example.com/feed/",
     "http://example.com/feed/"
   ]

Running on Amazon AWS with PM2

This application is designed to run on Amazon AWS using PM2 for process management. Follow these steps to set up and run the application:

1. Install PM2 globally on your AWS instance:

   sudo npm install -g pm2
   

2. Navigate to the project directory:

   cd /path/to/rss-feed-notifier
   

3. Start the application with PM2:

   pm2 start app.mjs --name "better-rss-feed-notifier"
   

4. Set up PM2 to start on system boot:

   pm2 startup systemd
   

   Follow the instructions provided by the command to complete the setup.

5. Save the current PM2 process list:

   pm2 save
   

6. To view the application logs:

   pm2 logs better-rss-feed-notifier
   

7. To restart the application:

   pm2 restart better-rss-feed-notifier
   

8. To stop the application:

   pm2 stop better-rss-feed-notifier
   

Changelog

The following changes have been made to the app.mjs source code:

• Implemented concurrent feed parsing with p-limit to improve performance
• Added more robust error handling and logging
• Improved the feed parsing process to handle various edge cases
• Enhanced the GitHub integration to handle larger datasets more efficiently
• Implemented a more comprehensive configuration validation system
• Added support for a separate Discord webhook for error notifications
• Improved the processed state management to be more resilient

Configuration

The Better RSS Feed Notifier can be configured using the config.json file. Here's a description of each configuration option:

• discordWebhookUrl: The URL of the Discord webhook where notifications will be sent.
• discordErrorWebhookUrl: The URL of the Discord webhook where error notifications will be sent.
• checkInterval: The interval at which the RSS feeds should be checked, specified in milliseconds.
• githubToken: Your GitHub access token for committing updates to the repository.
• githubRepo: The name of the GitHub repository where updates will be committed.
• githubOwner: Your GitHub username or the owner of the repository.
• feedUrlsPath: The path to the JSON file containing the RSS feed URLs to monitor.
• sendDiscordNotifications: A boolean indicating whether to send Discord notifications or not.
• maxRetries: The maximum number of retries for failed feed requests.
• retryDelay: The delay in milliseconds between each retry attempt.
• processedStateFile: The path to the JSON file storing the processed state of the feeds.
• dataFile: The path to the CSV file where the feed data will be stored.
• maxItemsPerFeed: The maximum number of items to process per feed.

Make sure to replace the placeholders with your actual values.

Contributing

Contributions are welcome! If you find any issues or have suggestions for improvements, please open an issue or submit a pull request.

License

This project is licensed under the MIT License.