feat: Exporter Architecture & Common Library (Sprint 12)

[fregataa]

Overview

Design exporter architecture and create shared libraries for custom exporter development.

Goals

• Design consistent exporter patterns and best practices
• Create reusable common library (pkg/exporter)
• Provide deployment templates for various environments
• Document exporter development workflow

Tasks

1. Architecture Design

• Design exporter patterns and best practices
• Define exporter lifecycle management
• Document deployment strategies
• Create exporter template project

2. Common Library (pkg/exporter)

• Create pkg/exporter package
• Implement collector interface
• HTTP server setup utilities
• Configuration management
• Logging utilities
• Health check implementation
• Prometheus metric helpers

3. Testing Framework

• Create exporter test utilities
• Mock metric collection
• Integration test helpers

4. Deployment Templates

• Dockerfile template
• Kubernetes DaemonSet template
• Helm chart template
• Systemd service template

5. Documentation

• Exporter development guide
• API reference
• Deployment guide
• Troubleshooting guide

Deliverables

• pkg/exporter common library
• Exporter template project
• Testing framework
• Deployment templates
• Development documentation

Directory Structure

services/exporters/
├── pkg/
│   └── exporter/
│       ├── collector/     # Metric collector interface
│       ├── server/        # HTTP server setup
│       ├── config/        # Config management
│       └── health/        # Health check
├── cmd/
│   └── template/          # Template project
└── docs/
    └── development.md

Success Criteria

• Template project builds and runs
• Common library covers 80% of exporter needs
• Documentation is clear and complete
• Deployment templates work

Notes

• Follow Prometheus exporter best practices
• Keep library simple and focused
• Optimize for minimal dependencies