$ show jthomperoo/custom-pod-autoscaler
Custom Pod Autoscaler is a Kubernetes operator that provides custom autoscaling functionality. It runs as a pod in a Kubernetes cluster, periodically gathering metrics (via custom scripts or Kubernetes metrics server), evaluating those metrics to determine desired replica count, and scaling target resources accordingly. The application features a REST API for manual interaction, supports hooks for custom logic at various points in the process, and is designed to work with any language or framework through shell commands or HTTP requests. The architecture follows clean separation of concerns with distinct packages for configuration loading, execution abstraction, metric gathering, evaluation, and scaling logic.
The LLM identified 3 files worth highlighting for reuse:
Handles loading configuration from YAML/JSON files and environment variables with proper type conversion and precedence rules. Uses reflection to map fields by JSON tags, supports nested structs, and provides clear error handling. This configuration loader could be extracted and used in any Go application needing flexible configuration from multiple sources.
Abstracts external command execution (shell and HTTP) through a unified interface. Handles timeouts, error handling, output capture, and provides a clean delegation mechanism via CombinedExecute. This execution abstraction could be reused in any Go application that needs to execute external commands with proper isolation and error handling.
Provides a clean abstraction over Kubernetes dynamic client for retrieving arbitrary resources as unstructured objects. Eliminates boilerplate code for working with the dynamic client and offers a simple interface for getting resources by API version, kind, name, and namespace. This resource client abstraction could be extracted and used in any Kubernetes operator or controller.