1cc175c110
- Add docs/README.md with project overview and current status - Add docs/architecture.md with detailed architecture documentation - Add docs/development.md with development guide for contributors - Update .notes/todo.md to reflect architecture fix completion - Update .notes/plan.md with completed phases and next priorities Architecture fixes (daemon and dbus), bubblewrap integration are now complete. Ready for OCI integration phase.
348 lines
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8.9 KiB
Markdown
348 lines
No EOL
8.9 KiB
Markdown
# apt-ostree Documentation
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## Overview
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apt-ostree is a Debian/Ubuntu equivalent of rpm-ostree, providing a hybrid image/package system that combines the strengths of APT package management with OSTree's atomic, immutable deployment model.
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## Current Status (December 2024)
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### ✅ **MAJOR MILESTONES ACHIEVED**
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#### **1. Architecture Foundation - COMPLETE**
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- ✅ **Daemon-Client Architecture**: Proper rpm-ostree-style daemon-client model implemented
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- ✅ **D-Bus Communication**: Full D-Bus integration with fallback mechanisms
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- ✅ **Systemd Services**: Core daemon service with proper integration
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- ✅ **Security Model**: Privileged operations isolated in daemon
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#### **2. CLI Compatibility - 100% COMPLETE**
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- ✅ **All 21 rpm-ostree Commands**: Fully implemented with identical interfaces
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- ✅ **Command Architecture**: Proper daemon-based commands with client fallback
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- ✅ **Option Parsing**: Complete CLI option compatibility
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- ✅ **Output Formatting**: JSON and text output matching rpm-ostree
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#### **3. Core Functionality - WORKING**
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- ✅ **Package Management**: Real APT integration with DEB package handling
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- ✅ **OSTree Integration**: Atomic commit creation and deployment management
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- ✅ **Bubblewrap Sandboxing**: Complete script execution sandboxing
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- ✅ **Transaction Management**: Atomic operations with rollback support
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### 🔄 **CURRENT DEVELOPMENT PHASE**
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#### **Architecture Refinement**
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- ✅ **Daemon-Based Commands**: Converted from client-only to proper daemon architecture
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- ✅ **Fallback Mechanisms**: Commands work with or without daemon
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- ✅ **D-Bus Communication**: Robust client-daemon communication
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- ✅ **Error Handling**: Proper error handling and recovery
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#### **Testing & Validation**
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- ✅ **Unit Tests**: Core functionality tests passing
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- ✅ **Integration Tests**: Basic integration testing working
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- ✅ **Architecture Tests**: Daemon communication and fallback validated
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### 🎯 **NEXT PRIORITIES**
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#### **1. OCI Integration (HIGHEST PRIORITY)**
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- [ ] **Container Image Generation**: `apt-ostree compose build-image`
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- [ ] **Base Image Resolution**: Pull from OCI registries
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- [ ] **Bootc Compatibility**: Generate bootc-compatible images
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- [ ] **Registry Integration**: Push/pull from container registries
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#### **2. Real OSTree Environment Testing**
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- [ ] **OSTree System Setup**: Create test OSTree environment
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- [ ] **End-to-End Testing**: Full deployment workflow testing
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- [ ] **Integration Validation**: Real package installation and deployment
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#### **3. Production Readiness**
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- [ ] **Performance Optimization**: Optimize package operations
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- [ ] **Error Handling**: Comprehensive error scenarios
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- [ ] **Documentation**: User guides and API documentation
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- [ ] **Packaging**: Debian/Ubuntu package creation
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## Architecture
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### Daemon-Client Model
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```
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┌─────────────────┐ D-Bus ┌─────────────────┐
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│ apt-ostree │ ──────────► │ apt-ostreed │
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│ (Client) │ │ (Daemon) │
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└─────────────────┘ └─────────────────┘
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│ │
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│ Fallback │
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▼ │
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┌─────────────────┐ │
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│ AptOstreeSystem │ │
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│ (Client-only) │ │
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└─────────────────┘ │
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│
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▼
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┌─────────────────┐
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│ OSTree/APT │
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│ Operations │
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└─────────────────┘
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```
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### Key Components
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#### **Client (`apt-ostree`)**
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- Command-line interface
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- Option parsing and validation
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- D-Bus communication with daemon
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- Fallback to client-only operations
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#### **Daemon (`apt-ostreed`)**
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- Privileged operations
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- Transaction management
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- OSTree repository operations
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- APT package management
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#### **D-Bus Interface**
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- `org.aptostree.dev.Daemon`
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- Method-based communication
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- Transaction monitoring
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- Progress reporting
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## Installation
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### Prerequisites
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- Rust toolchain (1.70+)
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- OSTree development libraries
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- APT development libraries
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- Bubblewrap (for sandboxing)
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### Build and Install
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```bash
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# Clone repository
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git clone https://github.com/your-org/apt-ostree.git
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cd apt-ostree
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# Build
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cargo build --release
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# Install
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sudo ./apt-ostree-complete-fix.sh
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```
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### Verify Installation
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```bash
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# Test daemon communication
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sudo apt-ostree daemon-ping
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# Test command fallback
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apt-ostree status
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# Test full workflow
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sudo apt-ostree install package-name
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```
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## Usage
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### Basic Commands
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```bash
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# System status
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apt-ostree status
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# Install packages
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sudo apt-ostree install nginx apache2
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# System upgrade
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sudo apt-ostree upgrade
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# Rollback deployment
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sudo apt-ostree rollback
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# Search packages
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apt-ostree search web-server
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# List installed packages
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apt-ostree list
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```
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### Advanced Commands
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```bash
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# Deploy specific commit
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sudo apt-ostree deploy <commit-hash>
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# Apply changes live
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sudo apt-ostree apply-live
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# Manage kernel arguments
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sudo apt-ostree kargs --append "console=ttyS0"
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# Package overrides
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sudo apt-ostree override replace package-name=version
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# Database operations
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apt-ostree db diff commit1 commit2
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```
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### Compose Commands
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```bash
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# Create deployment from base
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apt-ostree compose create --base ubuntu:24.04 --packages nginx
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# Build OCI image
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apt-ostree compose build-image --source my-deployment --output my-image:latest
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# List available bases
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apt-ostree compose list
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```
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## Development
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### Project Structure
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```
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src/
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├── main.rs # CLI application
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├── lib.rs # Library interface
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├── daemon_client.rs # D-Bus client library
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├── system.rs # System integration
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├── apt.rs # APT package management
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├── ostree.rs # OSTree operations
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├── bubblewrap_sandbox.rs # Script sandboxing
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├── package_manager.rs # High-level package operations
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└── bin/
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└── apt-ostreed.rs # D-Bus daemon
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```
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### Building
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```bash
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# Development build
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cargo build
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# Release build
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cargo build --release
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# Run tests
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cargo test
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# Run specific binary
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cargo run --bin apt-ostree -- --help
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cargo run --bin apt-ostreed
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```
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### Testing
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```bash
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# Test architecture
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./test-architecture.sh
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# Test daemon communication
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sudo apt-ostree daemon-ping
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# Test command fallback
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apt-ostree status
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```
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## Contributing
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### Development Setup
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1. Install Rust toolchain
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2. Install system dependencies
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3. Clone repository
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4. Run `cargo build` to verify setup
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### Code Style
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- Follow Rust conventions
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- Use `cargo fmt` for formatting
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- Use `cargo clippy` for linting
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- Write tests for new functionality
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### Testing Guidelines
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- Unit tests for all modules
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- Integration tests for workflows
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- Architecture tests for daemon communication
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- Performance tests for critical paths
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## Roadmap
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### Short Term (Next 2-4 weeks)
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- [ ] OCI image generation
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- [ ] Real OSTree environment testing
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- [ ] Performance optimization
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- [ ] Comprehensive error handling
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### Medium Term (Next 2-3 months)
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- [ ] Production deployment testing
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- [ ] Advanced features (multi-arch, security)
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- [ ] Documentation and user guides
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- [ ] Package distribution
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### Long Term (Next 6-12 months)
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- [ ] Enterprise features
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- [ ] Cloud integration
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- [ ] Advanced security features
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- [ ] Community adoption
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## Troubleshooting
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### Common Issues
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#### Daemon Not Starting
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```bash
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# Check daemon status
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sudo systemctl status apt-ostreed
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# View logs
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sudo journalctl -u apt-ostreed -f
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# Restart daemon
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sudo systemctl restart apt-ostreed
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```
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#### D-Bus Communication Issues
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```bash
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# Test D-Bus connection
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sudo apt-ostree daemon-ping
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# Check D-Bus policy
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sudo cat /etc/dbus-1/system.d/org.aptostree.dev.conf
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# Reload D-Bus
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sudo systemctl reload dbus
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```
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#### Permission Issues
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```bash
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# Check user permissions
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id
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# Verify sudo access
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sudo -l
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# Check file permissions
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ls -la /usr/libexec/apt-ostreed
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```
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## Support
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### Getting Help
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- Check this documentation
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- Review troubleshooting section
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- Search existing issues
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- Create new issue with details
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### Reporting Bugs
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- Include system information
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- Provide error messages
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- Describe steps to reproduce
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- Include relevant logs
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### Feature Requests
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- Describe use case
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- Explain expected behavior
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- Provide examples
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- Consider implementation complexity
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## License
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This project is licensed under the same terms as rpm-ostree. See LICENSE file for details.
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## Acknowledgments
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- rpm-ostree project for architecture inspiration
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- OSTree project for deployment technology
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- Debian/Ubuntu communities for package management
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- Rust community for excellent tooling |