apt-ostree/docs/.old/development-workflow.md

Development Workflow Documentation

Overview

This document describes the development workflow for apt-ostree, including setup, testing, debugging, and contribution guidelines. It provides developers with a comprehensive guide to working with the codebase.

Table of Contents

1. Development Environment Setup
2. Development Workflow
3. Testing Procedures
4. Debugging Techniques
5. Code Quality and Standards
6. Contribution Guidelines
7. Release Process

Development Environment Setup

Prerequisites

• Rust toolchain: Rust 1.75+ with Cargo
• System dependencies: See installation guide
• Development tools: Git, make, pkg-config
• Documentation tools: rustdoc, cargo-doc

Initial Setup

# Clone repository
git clone https://github.com/robojerk/apt-ostree.git
cd apt-ostree

# Install Rust toolchain
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
source ~/.cargo/env

# Install system dependencies
sudo apt-get install build-essential pkg-config \
    libostree-dev libapt-pkg-dev libpolkit-gobject-1-dev \
    libdbus-1-dev libsystemd-dev

# Install development tools
cargo install cargo-outdated cargo-audit cargo-tarpaulin

Environment Configuration

# Set development environment variables
export APT_OSTREE_DEV_MODE=1
export APT_OSTREE_LOG_LEVEL=debug
export RUST_LOG=debug

# Add to ~/.bashrc or ~/.zshrc
echo 'export APT_OSTREE_DEV_MODE=1' >> ~/.bashrc
echo 'export APT_OSTREE_LOG_LEVEL=debug' >> ~/.bashrc
echo 'export RUST_LOG=debug' >> ~/.bashrc

IDE Configuration

VS Code

// .vscode/settings.json
{
    "rust-analyzer.checkOnSave.command": "clippy",
    "rust-analyzer.cargo.features": ["development"],
    "rust-analyzer.procMacro.enable": true,
    "rust-analyzer.cargo.buildScripts.enable": true
}

IntelliJ IDEA / CLion

• Install Rust plugin
• Configure Rust toolchain
• Enable Cargo features: development,dev-full

Development Workflow

Daily Development Cycle

# 1. Start development session
git pull origin main
cargo check --features development

# 2. Make changes and test
cargo build --features development
cargo test --features development

# 3. Commit changes
git add .
git commit -m "feat(commands): add new feature X"

# 4. Push changes
git push origin feature-branch

Feature Development Workflow

# 1. Create feature branch
git checkout -b feature/new-feature

# 2. Implement feature
# ... make changes ...

# 3. Add tests
# ... add test cases ...

# 4. Update documentation
# ... update docs ...

# 5. Test thoroughly
cargo test --features development
cargo clippy --features development

# 6. Create pull request
git push origin feature/new-feature
# Create PR on GitHub

Bug Fix Workflow

# 1. Create bug fix branch
git checkout -b fix/bug-description

# 2. Reproduce bug
# ... reproduce issue ...

# 3. Fix bug
# ... implement fix ...

# 4. Add regression test
# ... add test case ...

# 5. Test fix
cargo test --features development

# 6. Create pull request
git push origin fix/bug-description

Testing Procedures

Unit Testing

# Run all unit tests
cargo test

# Run specific test module
cargo test commands::package

# Run tests with output
cargo test -- --nocapture

# Run tests with specific feature
cargo test --features development

# Run tests in parallel
cargo test -- --test-threads 4

Integration Testing

# Run integration tests
cargo test --test integration_tests

# Run specific integration test
cargo test --test integration_tests test_package_installation

# Run integration tests with verbose output
cargo test --test integration_tests -- --nocapture

Development Commands Testing

# Test development commands
cargo run --features development -- testutils --help
cargo run --features development -- shlib-backend --help
cargo run --features development -- internals --help

# Test specific development command
cargo run --features development -- testutils moo
cargo run --features development -- shlib-backend get-basearch
cargo run --features development -- internals diagnostics

Performance Testing

# Install performance testing tools
cargo install cargo-bench

# Run benchmarks
cargo bench

# Profile performance
cargo install flamegraph
cargo flamegraph --bin apt-ostree -- internals diagnostics

# Memory profiling
cargo install cargo-valgrind
cargo valgrind test

Security Testing

# Run security audit
cargo audit

# Check for known vulnerabilities
cargo audit --deny warnings

# Dependency vulnerability scan
cargo install cargo-audit
cargo audit

Debugging Techniques

Logging and Tracing

use tracing::{info, warn, error, debug, trace};

// Set log level
std::env::set_var("RUST_LOG", "debug");

// Use in code
debug!("Debug information: {:?}", data);
info!("Information message: {}", message);
warn!("Warning message: {}", warning);
error!("Error message: {}", error);
trace!("Trace information: {:?}", trace_data);

Interactive Debugging

# Run with debugger
rust-gdb --args target/debug/apt-ostree internals diagnostics

# Use println! for quick debugging
cargo run --features development -- internals diagnostics

# Enable backtrace
export RUST_BACKTRACE=1
cargo run --features development -- internals diagnostics

Development Commands for Debugging

# Run system diagnostics
sudo apt-ostree internals diagnostics --verbose

# Validate system state
sudo apt-ostree internals validate-state --strict-mode

# Dump debug information
sudo apt-ostree internals debug-dump --output /tmp/debug.json

# Test basic functionality
sudo apt-ostree testutils moo

# Execute debug script
sudo apt-ostree testutils script-shell /tmp/debug.sh --verbose

Profiling and Analysis

# CPU profiling
cargo install cargo-flamegraph
cargo flamegraph --bin apt-ostree -- internals diagnostics

# Memory profiling
cargo install cargo-valgrind
cargo valgrind test

# Code coverage
cargo install cargo-tarpaulin
cargo tarpaulin --out Html --output-dir coverage

Code Quality and Standards

Code Style

• Rust conventions: Follow Rust style guide and idioms
• Formatting: Use cargo fmt for consistent formatting
• Documentation: Document all public APIs with doc comments
• Error handling: Use proper error types and Result handling

Linting and Analysis

# Run Clippy
cargo clippy --features development

# Run with specific rules
cargo clippy --features development -- -D warnings

# Allow specific warnings
cargo clippy --features development -- -D warnings -A clippy::too_many_arguments

# Check formatting
cargo fmt -- --check

# Format code
cargo fmt

Documentation Standards

/// Brief description of the function
///
/// Detailed description with examples and usage notes.
/// 
/// # Arguments
/// * `param1` - Description of first parameter
/// * `param2` - Description of second parameter
///
/// # Returns
/// Result containing success value or error
///
/// # Examples
/// ```
/// use apt_ostree::lib::example::Example;
/// 
/// let result = Example::new().do_something();
/// assert!(result.is_ok());
/// ```
///
/// # Errors
/// Returns error if operation fails
pub fn example_function(param1: String, param2: u32) -> Result<(), Error> {
    // Implementation
}

Testing Standards

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_function_name() {
        // Arrange
        let input = "test";
        
        // Act
        let result = function(input);
        
        // Assert
        assert!(result.is_ok());
        assert_eq!(result.unwrap(), "expected");
    }

    #[test]
    #[should_panic(expected = "error message")]
    fn test_function_panics() {
        function("invalid");
    }

    #[test]
    fn test_function_with_result() -> Result<(), Box<dyn std::error::Error>> {
        let result = function("test")?;
        assert_eq!(result, "expected");
        Ok(())
    }
}

Contribution Guidelines

Pull Request Process

1. Fork repository: Create your own fork
2. Create feature branch: git checkout -b feature/new-feature
3. Implement changes: Follow coding guidelines
4. Add tests: Include unit and integration tests
5. Update documentation: Update relevant documentation
6. Submit PR: Create pull request with clear description

Commit Guidelines

type(scope): description

[optional body]

[optional footer]

Types: feat, fix, docs, style, refactor, test, chore Scope: cli, daemon, lib, commands, etc.

Examples:

feat(commands): add new package management command

fix(daemon): resolve memory leak in transaction handling

docs(user-guide): update installation instructions

test(integration): add end-to-end package installation test

Review Process

• Code review: All changes require review
• Testing: Ensure all tests pass
• Documentation: Verify documentation is updated
• Integration: Test integration with existing features

Issue Reporting

When reporting issues, include:

• Environment: OS, version, dependencies
• Steps to reproduce: Clear reproduction steps
• Expected behavior: What should happen
• Actual behavior: What actually happens
• Logs: Relevant error logs and output

Release Process

Pre-Release Checklist

# 1. Update version numbers
# Update Cargo.toml, debian/changelog, etc.

# 2. Run full test suite
cargo test --features development
cargo test --test integration_tests

# 3. Run code quality checks
cargo clippy --features development -- -D warnings
cargo fmt -- --check
cargo audit

# 4. Build all targets
cargo build --release --features development
cargo build --release --features dev-full

# 5. Test development commands
cargo run --features development -- testutils --help
cargo run --features development -- shlib-backend --help
cargo run --features development -- internals --help

# 6. Build documentation
cargo doc --features development --no-deps

# 7. Build Debian package
./build-debian-trixie.sh

Release Steps

# 1. Create release branch
git checkout -b release/v0.2.0

# 2. Update version numbers
# ... update version files ...

# 3. Run final tests
cargo test --features development
cargo test --test integration_tests

# 4. Commit version changes
git add .
git commit -m "chore(release): bump version to 0.2.0"

# 5. Tag release
git tag -a v0.2.0 -m "Release version 0.2.0"

# 6. Push release
git push origin release/v0.2.0
git push origin v0.2.0

# 7. Create GitHub release
# ... create release on GitHub ...

# 8. Merge to main
git checkout main
git merge release/v0.2.0
git push origin main

Post-Release Tasks

# 1. Update documentation
# ... update version references ...

# 2. Announce release
# ... announce on mailing lists, forums, etc. ...

# 3. Monitor for issues
# ... watch for bug reports and issues ...

# 4. Plan next release
# ... plan features for next version ...

Development Best Practices

Code Organization

• Modular design: Keep modules focused and cohesive
• Separation of concerns: Separate logic from presentation
• Dependency management: Minimize dependencies and avoid circular references
• Error handling: Use consistent error types and handling patterns

Performance Considerations

• Efficient algorithms: Use appropriate algorithms and data structures
• Memory management: Avoid unnecessary allocations and memory leaks
• Async operations: Use async/await for I/O operations
• Caching: Implement caching for expensive operations

Security Considerations

• Input validation: Validate all user inputs
• Authentication: Implement proper authentication and authorization
• Resource limits: Set appropriate limits for operations
• Audit logging: Log security-relevant events

Testing Strategy

• Unit tests: Test individual functions and methods
• Integration tests: Test component interactions
• End-to-end tests: Test complete workflows
• Performance tests: Test performance characteristics
• Security tests: Test security aspects

Documentation Strategy

• API documentation: Document all public APIs
• User guides: Provide comprehensive user documentation
• Developer guides: Document development processes
• Examples: Provide working examples for common use cases

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This guide covers the development workflow for apt-ostree. For user documentation, refer to the User Guide.