Lifei Zhou
50 lines
1.1 KiB
Rust
50 lines
1.1 KiB
Rust
use crate::config::paths::Paths;
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use once_cell::sync::Lazy;
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use std::fs;
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use uuid::Uuid;
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static INSTANCE_ID: Lazy<String> = Lazy::new(load_or_create);
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fn file_path() -> std::path::PathBuf {
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Paths::state_dir().join("instance_id")
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}
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fn load_or_create() -> String {
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let path = file_path();
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if let Ok(id) = fs::read_to_string(&path) {
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let id = id.trim().to_string();
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if !id.is_empty() {
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return id;
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}
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}
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let id = Uuid::new_v4().to_string();
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if let Some(parent) = path.parent() {
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let _ = fs::create_dir_all(parent);
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}
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let _ = fs::write(&path, &id);
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id
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}
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/// Returns a stable, globally unique identifier for this Goose installation.
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/// The ID is generated once and persisted to disk, surviving restarts.
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pub fn get_instance_id() -> &'static str {
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&INSTANCE_ID
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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_instance_id_is_stable() {
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let id1 = get_instance_id();
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let id2 = get_instance_id();
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assert_eq!(id1, id2);
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assert!(!id1.is_empty());
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}
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}
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