goplt/docs/content/stories/epic0/SUMMARY.md

Epic 0: Implementation Summary

Overview

Epic 0 establishes the foundation of the Go Platform project with core infrastructure components that enable all future development. This epic includes project initialization, configuration management, structured logging, CI/CD pipeline, and dependency injection setup.

Completed Stories

✅ 0.1 Project Initialization

• Go module initialized with proper module path
• Complete directory structure following Clean Architecture
• .gitignore configured for Go projects
• Comprehensive README with project overview

✅ 0.2 Configuration Management System

• ConfigProvider interface in pkg/config/
• Viper-based implementation in internal/config/
• YAML configuration files in config/ directory
• Environment variable support with automatic mapping
• Type-safe configuration access methods

✅ 0.3 Structured Logging System

• Logger interface in pkg/logger/
• Zap-based implementation in internal/logger/
• JSON and console output formats
• Configurable log levels
• Request ID and context-aware logging support

✅ 0.4 CI/CD Pipeline

• GitHub Actions workflow for automated testing and linting
• Comprehensive Makefile with common development tasks
• Automated build and test execution

✅ 0.5 Dependency Injection and Bootstrap

• DI container using Uber FX in internal/di/
• Provider functions for core services
• Application entry point in cmd/platform/main.go
• Lifecycle management with graceful shutdown

Verification Instructions

Prerequisites

• Go 1.24 or later installed
• Make installed (optional, for using Makefile commands)

1. Verify Project Structure

# Check Go module
go mod verify

# Check directory structure
ls -la
# Should see: cmd/, internal/, pkg/, config/, docs/, etc.

2. Verify Configuration System

# Build the application
go build ./cmd/platform

# Check if config files exist
ls -la config/
# Should see: default.yaml, development.yaml, production.yaml

# Test config loading (will fail without database, but config should load)
# This will be tested in Epic 1 when database is available

3. Verify Logging System

# Run tests for logging
go test ./internal/logger/...

# Expected output: Tests should pass

4. Verify CI/CD Pipeline

# Run linting (if golangci-lint is installed)
make lint

# Run tests
make test

# Build the application
make build
# Binary should be created in bin/platform

# Run all checks
make check

5. Verify Dependency Injection

# Build the application
go build ./cmd/platform

# Check if DI container compiles
go build ./internal/di/...

# Run the application (will fail without database in Epic 1)
# go run ./cmd/platform/main.go

6. Verify Application Bootstrap

# Build the application
make build

# Check if binary exists
ls -la bin/platform

# The application should be ready to run (database connection will be tested in Epic 1)

Testing Configuration

The configuration system can be tested by:

1. Modifying config files: Edit config/default.yaml and verify changes are loaded
2. Environment variables: Set ENVIRONMENT=production and verify production config is loaded
3. Type safety: Configuration access methods (GetString, GetInt, etc.) provide compile-time safety

Testing Logging

The logging system can be tested by:

1. Unit tests: Run go test ./internal/logger/...
2. Integration: Logging will be tested in Epic 1 when HTTP server is available
3. Format switching: Change logging.format in config to switch between JSON and console output

Common Issues and Solutions

Issue: go mod verify fails

Solution: Run go mod tidy to update dependencies

Issue: Build fails

Solution: Ensure Go 1.24+ is installed and all dependencies are downloaded (go mod download)

Issue: Config not loading

Solution: Ensure config/default.yaml exists and is in the correct location relative to the binary

Next Steps

After verifying Epic 0, proceed to Epic 1 to set up the database and HTTP server, which will enable full end-to-end testing of the configuration and logging systems.