feat: Enhance service manager with zinit socket discovery and systemd fallback
- Improve Linux support by automatically discovering zinit sockets using environment variables and common paths. - Add fallback to systemd if no zinit server is detected. - Enhance README with detailed instructions for zinit usage, including custom socket path configuration. - Add example demonstrating zinit socket discovery. - Add logging to show socket discovery process. - Add unit tests for service manager creation and socket discovery.
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@ -62,4 +62,5 @@ docusaurus.config.ts
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sidebars.ts
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tsconfig.json
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Cargo.toml.bak
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Cargo.toml.bak
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for_augment
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@ -1,13 +1,17 @@
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// Basic Service Manager Usage Example
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//
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// This example demonstrates the basic API of the service manager.
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// It works on both macOS (launchctl) and Linux (zinit).
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// It works on both macOS (launchctl) and Linux (zinit/systemd).
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//
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// Prerequisites:
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//
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// Linux: Make sure zinit is running:
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// Linux: The service manager will automatically discover running zinit servers
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// or fall back to systemd. To use zinit, start it with:
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// zinit -s /tmp/zinit.sock init
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//
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// You can also specify a custom socket path:
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// export ZINIT_SOCKET_PATH=/your/custom/path/zinit.sock
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//
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// macOS: No additional setup required (uses launchctl).
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//
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// Usage:
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@ -36,6 +36,7 @@ rhai = ["dep:rhai"]
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tokio-test = "0.4"
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rhai = { workspace = true }
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tempfile = { workspace = true }
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env_logger = "0.10"
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[[test]]
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name = "zinit_integration_tests"
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@ -159,15 +159,34 @@ herodo your_service_script.rhai
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## Prerequisites
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### Linux (zinit)
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### Linux (zinit/systemd)
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Make sure zinit is installed and running:
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The service manager automatically discovers running zinit servers and falls back to systemd if none are found.
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**For zinit (recommended):**
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```bash
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# Start zinit with default socket
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zinit -s /tmp/zinit.sock init
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# Or with a custom socket path
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zinit -s /var/run/zinit.sock init
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```
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**Socket Discovery:**
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The service manager will automatically find running zinit servers by checking:
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1. `ZINIT_SOCKET_PATH` environment variable (if set)
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2. Common socket locations: `/var/run/zinit.sock`, `/tmp/zinit.sock`, `/run/zinit.sock`, `./zinit.sock`
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**Custom socket path:**
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```bash
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# Set custom socket path
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export ZINIT_SOCKET_PATH=/your/custom/path/zinit.sock
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```
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**Systemd fallback:**
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If no zinit server is detected, the service manager automatically falls back to systemd.
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### macOS (launchctl)
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No additional setup required - uses the built-in launchctl system.
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@ -10,6 +10,9 @@ use std::thread;
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use std::time::Duration;
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fn main() {
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// Initialize logging to see socket discovery in action
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env_logger::init();
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let manager = match create_service_manager() {
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Ok(manager) => manager,
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Err(e) => {
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@ -4,6 +4,9 @@ use std::thread;
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use std::time::Duration;
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fn main() {
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// Initialize logging to see socket discovery in action
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env_logger::init();
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// 1. Create a service manager for the current platform
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let manager = match create_service_manager() {
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Ok(manager) => manager,
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47
service_manager/examples/socket_discovery_test.rs
Normal file
47
service_manager/examples/socket_discovery_test.rs
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@ -0,0 +1,47 @@
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//! Socket Discovery Test
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//!
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//! This example demonstrates the zinit socket discovery functionality.
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//! It shows how the service manager finds available zinit sockets.
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use sal_service_manager::create_service_manager;
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fn main() {
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// Initialize logging to see socket discovery in action
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env_logger::init();
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println!("=== Zinit Socket Discovery Test ===");
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println!("This test demonstrates how the service manager discovers zinit sockets.");
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println!();
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// Test environment variable
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if let Ok(socket_path) = std::env::var("ZINIT_SOCKET_PATH") {
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println!("🔍 ZINIT_SOCKET_PATH environment variable set to: {}", socket_path);
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} else {
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println!("🔍 ZINIT_SOCKET_PATH environment variable not set");
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}
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println!();
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println!("🚀 Creating service manager...");
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match create_service_manager() {
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Ok(_manager) => {
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println!("✅ Service manager created successfully!");
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#[cfg(target_os = "macos")]
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println!("📱 Platform: macOS - Using launchctl");
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#[cfg(target_os = "linux")]
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println!("🐧 Platform: Linux - Check logs above for socket discovery details");
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}
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Err(e) => {
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println!("❌ Failed to create service manager: {}", e);
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}
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}
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println!();
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println!("=== Test Complete ===");
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println!();
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println!("To test zinit socket discovery on Linux:");
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println!("1. Start zinit: zinit -s /tmp/zinit.sock init");
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println!("2. Run with logging: RUST_LOG=debug cargo run --example socket_discovery_test -p sal-service-manager");
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println!("3. Or set custom path: ZINIT_SOCKET_PATH=/custom/path.sock RUST_LOG=debug cargo run --example socket_discovery_test -p sal-service-manager");
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}
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@ -100,6 +100,89 @@ pub use zinit::ZinitServiceManager;
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#[cfg(feature = "rhai")]
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pub mod rhai;
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/// Discover available zinit socket paths
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///
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/// This function checks for zinit sockets in the following order:
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/// 1. Environment variable ZINIT_SOCKET_PATH (if set)
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/// 2. Common socket locations with connectivity testing
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///
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/// # Returns
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///
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/// Returns the first working socket path found, or None if no working zinit server is detected.
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#[cfg(target_os = "linux")]
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fn discover_zinit_socket() -> Option<String> {
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// First check environment variable
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if let Ok(env_socket_path) = std::env::var("ZINIT_SOCKET_PATH") {
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log::debug!("Checking ZINIT_SOCKET_PATH: {}", env_socket_path);
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if test_zinit_socket(&env_socket_path) {
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log::info!(
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"Using zinit socket from ZINIT_SOCKET_PATH: {}",
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env_socket_path
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);
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return Some(env_socket_path);
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} else {
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log::warn!(
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"ZINIT_SOCKET_PATH specified but socket is not accessible: {}",
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env_socket_path
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);
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}
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}
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// Try common socket locations
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let common_paths = [
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"/var/run/zinit.sock",
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"/tmp/zinit.sock",
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"/run/zinit.sock",
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"./zinit.sock",
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];
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log::debug!("Discovering zinit socket from common locations...");
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for path in &common_paths {
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log::debug!("Testing socket path: {}", path);
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if test_zinit_socket(path) {
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log::info!("Found working zinit socket at: {}", path);
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return Some(path.to_string());
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}
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}
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log::debug!("No working zinit socket found");
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None
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}
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/// Test if a zinit socket is accessible and responsive
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///
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/// This function attempts to create a ZinitServiceManager and perform a basic
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/// connectivity test by listing services.
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#[cfg(target_os = "linux")]
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fn test_zinit_socket(socket_path: &str) -> bool {
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// Check if socket file exists first
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if !std::path::Path::new(socket_path).exists() {
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log::debug!("Socket file does not exist: {}", socket_path);
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return false;
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}
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// Try to create a manager and test basic connectivity
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match ZinitServiceManager::new(socket_path) {
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Ok(manager) => {
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// Test basic connectivity by trying to list services
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match manager.list() {
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Ok(_) => {
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log::debug!("Socket {} is responsive", socket_path);
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true
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}
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Err(e) => {
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log::debug!("Socket {} exists but not responsive: {}", socket_path, e);
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false
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}
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}
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}
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Err(e) => {
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log::debug!("Failed to create manager for socket {}: {}", socket_path, e);
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false
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}
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}
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}
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/// Create a service manager appropriate for the current platform
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///
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/// - On macOS: Uses launchctl for service management
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@ -108,7 +191,12 @@ pub mod rhai;
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/// # Returns
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///
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/// Returns a Result containing the service manager or an error if initialization fails.
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/// On Linux, if zinit is not available, it will automatically fall back to systemd.
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/// On Linux, it first tries to discover a working zinit socket. If no zinit server is found,
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/// it will fall back to systemd.
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///
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/// # Environment Variables
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///
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/// - `ZINIT_SOCKET_PATH`: Specifies the zinit socket path (Linux only)
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///
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/// # Errors
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///
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@ -122,22 +210,28 @@ pub fn create_service_manager() -> Result<Box<dyn ServiceManager>, ServiceManage
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}
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#[cfg(target_os = "linux")]
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{
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// Try zinit first (preferred), fall back to systemd if it fails
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let socket_path = "/tmp/zinit.sock";
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match ZinitServiceManager::new(socket_path) {
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Ok(zinit_manager) => {
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log::debug!("Using zinit service manager");
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Ok(Box::new(zinit_manager))
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}
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Err(zinit_error) => {
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log::warn!(
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"Zinit service manager failed, falling back to systemd: {}",
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zinit_error
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);
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// Fallback to systemd
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Ok(Box::new(SystemdServiceManager::new()))
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// Try to discover a working zinit socket
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if let Some(socket_path) = discover_zinit_socket() {
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match ZinitServiceManager::new(&socket_path) {
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Ok(zinit_manager) => {
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log::info!("Using zinit service manager with socket: {}", socket_path);
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return Ok(Box::new(zinit_manager));
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}
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Err(zinit_error) => {
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log::warn!(
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"Failed to create zinit manager for discovered socket {}: {}",
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socket_path,
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zinit_error
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);
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}
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}
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} else {
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log::info!("No running zinit server detected. To use zinit, start it with: zinit -s /tmp/zinit.sock init");
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}
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// Fallback to systemd
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log::info!("Falling back to systemd service manager");
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Ok(Box::new(SystemdServiceManager::new()))
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}
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#[cfg(not(any(target_os = "macos", target_os = "linux")))]
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{
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@ -163,3 +257,45 @@ pub fn create_zinit_service_manager(
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pub fn create_systemd_service_manager() -> Box<dyn ServiceManager> {
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Box::new(SystemdServiceManager::new())
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_create_service_manager() {
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// This test ensures the service manager can be created without panicking
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let result = create_service_manager();
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assert!(result.is_ok(), "Service manager creation should succeed");
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}
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#[cfg(target_os = "linux")]
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#[test]
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fn test_socket_discovery_with_env_var() {
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// Test that environment variable is respected
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std::env::set_var("ZINIT_SOCKET_PATH", "/test/path.sock");
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// The discover function should check the env var first
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// Since the socket doesn't exist, it should return None, but we can't test
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// the actual discovery logic without a real socket
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std::env::remove_var("ZINIT_SOCKET_PATH");
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}
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#[cfg(target_os = "linux")]
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#[test]
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fn test_socket_discovery_without_env_var() {
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// Ensure env var is not set
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std::env::remove_var("ZINIT_SOCKET_PATH");
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// The discover function should try common paths
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// Since no zinit is running, it should return None
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let result = discover_zinit_socket();
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// This is expected to be None in test environment
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assert!(
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result.is_none(),
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"Should return None when no zinit server is running"
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);
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}
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}
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