Implement Non-Functional Requirements: Logging, Configuration Parsing, and Argument Handling etc

[lukehinds]

Requirements:

1. Logging

• Requirements:
  • Levels: Implement log levels (e.g., DEBUG, INFO, WARNING, ERROR, CRITICAL) to allow for appropriate detail based on the environment.
  • Structured Logging: Use a structured logging format (e.g., JSON or key-value pairs) to simplify parsing and searching logs.
  • Output: Logs should be configurable to write to console, files, or external monitoring services using json (e.g., CloudWatch, ELK Stack).
  • Error Tracking: Ensure errors and exceptions are logged with stack traces for debugging purposes.
  • Log Rotation: Set up log rotation policies to prevent excessive disk usage.

2. Configuration Parser

• Purpose: To manage environment-specific configurations, supporting flexibility and separation of concerns.
• Requirements:
  • File Types: Support configuration files in formats like JSON, YAML, or INI for flexibility.
  • Environment Variables: Allow configurations to be overridden with environment variables to support containerization or CI/CD pipelines.
  • Default Values: Provide sensible default values to allow the app to run with minimal configuration.
  • Validation: Implement validation for required configurations and alert if critical configs are missing.
  • Configuration Reload: Consider a mechanism to reload configuration without downtime, if applicable.

3. Argument Handling

• Purpose: To support command-line flexibility for users, enabling quick adjustments and script integration.
• Requirements:
  • Parser: Use a standard argument parser (e.g., argparse for Python) to handle command-line arguments cleanly.
  • Help and Documentation: Ensure arguments are documented with clear help messages to guide users.
  • Required and Optional Arguments: Distinguish between required and optional arguments for command-line usage.
  • Argument Validation: Implement validation checks for argument values to prevent incorrect usage.
  • Subcommands: If the app has multiple functionalities, support subcommands to organize commands logically.

Acceptance Criteria:

• Logging is implemented with configurable levels and structured output.
• Configuration can be read from files and overridden with environment variables, with validation checks in place.
• Command-line argument handling is clear, with necessary validation and user help documentation.