The Spring Boot CLI that Spring forgot to build

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Haft - Interactive CLI for Spring Boot

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Table of Contents

1. The Problem
2. The Solution
3. Installation
4. Quick Start
5. Features

The Problem

You start a Spring Boot project with Spring Initializr. Great. Now what?

Every new feature means the same tedious ritual:

• Create UserEntity.java
• Create UserRepository.java
• Create UserService.java
• Create UserServiceImpl.java
• Create UserController.java
• Create UserRequest.java
• Create UserResponse.java
• Create UserMapper.java

8 files. Every. Single. Time.

Copy-paste from existing code. Fix the class names. Fix the imports. Miss something. Debug. Repeat.

The Solution

haft generate resource User

Done. All 8 files. Properly structured. Matching your project's existing patterns.

Intelligent Code Generation

Haft doesn't just generate boilerplate — it learns from your codebase and generates code that matches your existing conventions.

What Haft Detects Automatically

Detection	What It Does
Architecture Pattern	Layered, Feature/Package-by-Feature, Hexagonal, Clean, Modular
Feature Style	Flat (user/UserController.java) vs Nested (user/controller/UserController.java)
DTO Naming	UserRequest/UserResponse vs UserDTO
ID Type	Long vs UUID with correct annotations
Lombok Usage	@Data, @Builder, @NoArgsConstructor, @AllArgsConstructor
Mapper Type	MapStruct, ModelMapper, or manual mapping
Base Entity	Extends your BaseEntity if detected
Validation Style	Jakarta (jakarta.validation) vs Javax (javax.validation)
Swagger/OpenAPI	Adds @Operation, @Tag annotations if detected
Database Type	JPA, MongoDB, Cassandra, R2DBC

Profile Caching

First run scans your project and caches the profile to .haft/profile.json. Subsequent runs are instant.

# First run (~200ms) - scans and caches
haft generate resource User

# Second run (~10ms) - uses cache
haft generate resource Product

# Force re-scan if needed
haft generate resource Order --refresh

Why Haft?

	Spring Initializr	Haft
Project Bootstrap	✅	✅
Works Offline	❌	✅
Resource Generation	❌	✅
Intelligent Detection	❌	✅
Architecture Aware	❌	✅
Test Generation	❌	✅
Dependency Management	❌	✅
Interactive TUI	❌	✅
Lifecycle Companion	❌	✅

Haft works completely offline. No web browser. No internet dependency. Just you and your terminal.

Install

curl -fsSL https://raw.githubusercontent.com/KashifKhn/haft/main/install.sh | bash

Note: You can inspect the install.sh script before running it. We prioritize security and transparency.

Linux

# AMD64
curl -L https://github.com/KashifKhn/haft/releases/latest/download/haft-linux-amd64.tar.gz | tar xz
sudo mv haft-linux-amd64 /usr/local/bin/haft

# ARM64
curl -L https://github.com/KashifKhn/haft/releases/latest/download/haft-linux-arm64.tar.gz | tar xz
sudo mv haft-linux-arm64 /usr/local/bin/haft

macOS

# Intel
curl -L https://github.com/KashifKhn/haft/releases/latest/download/haft-darwin-amd64.tar.gz | tar xz
sudo mv haft-darwin-amd64 /usr/local/bin/haft

# Apple Silicon
curl -L https://github.com/KashifKhn/haft/releases/latest/download/haft-darwin-arm64.tar.gz | tar xz
sudo mv haft-darwin-arm64 /usr/local/bin/haft

Windows

Invoke-WebRequest -Uri "https://github.com/KashifKhn/haft/releases/latest/download/haft-windows-amd64.zip" -OutFile "haft.zip"
Expand-Archive -Path "haft.zip" -DestinationPath "."
Move-Item "haft-windows-amd64.exe" "$env:LOCALAPPDATA\Microsoft\WindowsApps\haft.exe"

Or download manually from Releases.

Go

go install github.com/KashifKhn/haft/cmd/haft@latest

From Source

git clone https://github.com/KashifKhn/haft.git
cd haft
make build
sudo mv bin/haft /usr/local/bin/

Shell Completions

Enable tab completions for your shell:

# Bash
haft completion bash > /etc/bash_completion.d/haft

# Zsh
haft completion zsh > "${fpath[1]}/_haft"

# Fish
haft completion fish > ~/.config/fish/completions/haft.fish

# PowerShell
haft completion powershell > haft.ps1

Quick Start

Create a New Project

haft init

An interactive wizard guides you through project setup:

? Project name: my-api
? Group ID: com.example  
? Java version: 21
? Spring Boot: 3.4.1
? Dependencies: web, data-jpa, lombok, validation

Generate Resources (Smart Mode)

cd my-app

# Generate a complete CRUD resource
# Haft automatically detects your architecture and conventions
haft generate resource User

Generated files match your project structure:

# If your project uses Feature/Package-by-Feature (flat style):
user/
├── UserController.java
├── UserService.java
├── UserServiceImpl.java
├── UserRepository.java
├── User.java
├── UserMapper.java
└── dto/
    ├── UserRequest.java
    └── UserResponse.java

# If your project uses Layered architecture:
controller/UserController.java
service/UserService.java
service/impl/UserServiceImpl.java
repository/UserRepository.java
entity/User.java
dto/UserRequest.java
dto/UserResponse.java
mapper/UserMapper.java

Generate with Tests

# Generate resource + unit/integration tests
haft generate resource Product

# Skip test generation
haft generate resource Payment --skip-tests

Generated test files:

# ServiceTest - Unit tests with Mockito
# ControllerTest - Integration tests with MockMvc
# RepositoryTest - Integration tests with @DataJpaTest
# EntityTest - Unit tests for entity

Individual Generators

haft generate controller Product   # haft g co Product
haft generate service Order        # haft g s Order
haft generate repository Payment   # haft g repo Payment
haft generate entity Customer      # haft g e Customer
haft generate dto Invoice          # Request + Response DTOs

Generate Security Configuration

# Interactive selection of security types
haft generate security

# Generate JWT authentication
haft generate security --jwt

# Generate session-based authentication
haft generate security --session

# Generate OAuth2 authentication (Google, GitHub, Facebook)
haft generate security --oauth2

# Generate all security types
haft generate security --all

Generated files for JWT:

security/
├── SecurityConfig.java
├── JwtUtil.java
├── JwtAuthenticationFilter.java
├── AuthenticationController.java
├── CustomUserDetailsService.java
└── dto/
    ├── AuthRequest.java
    ├── AuthResponse.java
    ├── RegisterRequest.java
    └── RefreshTokenRequest.java

Manage Dependencies

# Interactive search picker
haft add

# Browse by category
haft add --browse

# Add using shortcuts (330+ available)
haft add lombok validation jwt

# Add using Maven coordinates (auto-verified)
haft add org.mapstruct:mapstruct

# Remove dependencies
haft remove lombok
haft remove   # Interactive picker

Development Workflow

haft dev serve   # Start with hot-reload
haft dev build   # Build project
haft dev test    # Run tests
haft dev clean   # Clean artifacts

Project Analysis

haft info              # Project information
haft info --loc        # With lines of code
haft routes            # List REST endpoints
haft routes --files    # With file locations
haft stats             # Code statistics
haft stats --cocomo    # COCOMO cost estimates

Features

• Intelligent Detection — Learns from your codebase patterns
• Architecture Aware — Supports Layered, Feature, Hexagonal, Clean, Modular
• Test Generation — Unit and integration tests with Mockito, MockMvc
• Profile Caching — Instant subsequent runs with .haft/profile.json
• Interactive TUI — Beautiful terminal interface with keyboard navigation
• Offline First — No internet required, all metadata bundled
• Smart Defaults — Sensible defaults that match industry standards
• Back Navigation — Made a mistake? Press Esc to go back
• Dependency Search — Find any dependency with /
• Maven Central Verification — Auto-verify and fetch latest versions

Keyboard Shortcuts

Key	Action
↑ ↓	Navigate
Enter	Select
Esc	Go back
Space	Toggle
/	Search
Tab	Next category
0-9	Jump to category

Supported Architectures

Haft automatically detects and generates code for:

Architecture	Description
Layered	Traditional controller/, service/, repository/, entity/
Feature	Package-by-feature with nested or flat structure
Hexagonal	Ports & Adapters with adapter/, application/, domain/
Clean	Clean Architecture with usecase/, gateway/, infrastructure/
Modular	Modular monolith with api/, internal/

Roadmap

• Project initialization wizard
• All Spring Initializr dependencies
• Maven & Gradle support
• Intelligent architecture detection
• Test generation
• Profile caching
• haft generate resource — Full CRUD generation
• haft add / haft remove — Dependency management
• haft dev — Development commands
• haft info / haft routes / haft stats — Project analysis
• Shell completions (bash, zsh, fish, powershell)
• Security configuration (JWT, Session, OAuth2)
• Custom templates
• Neovim integration
• VS Code extension
• IntelliJ plugin

Built With

• Go - High-performance compiled binary.
• Bubble Tea - The TUI framework.
• Cobra - CLI command structure.

Contributing

Contributions are welcome. See CONTRIBUTING.md for guidelines.

License

MIT License. See LICENSE for details.

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_{Built for developers who value their time}