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* Shared-root layout + per-vault registry + cross-process lock.
* One lilbee binary, one HF cache, many vault data-dirs, one active vault at a time.
*/
import { node } from "./node";
import { getDefaultLilbeeDataRoot } from "./session-token";
import { DEFAULT_SHARED_CONFIG, SHARED_PATH, type SharedConfig, type VaultRegistryEntry } from "./types";
const VAULT_ID_BYTES = 6;
const FALLBACK_SHARED_ROOT = "/tmp/lilbee";
export function resolveSharedRoot(setting: string): string {
if (setting && setting.length > 0) return setting;
return getDefaultLilbeeDataRoot() ?? FALLBACK_SHARED_ROOT;
}
export function computeVaultId(vaultPath: string): string {
const canonical = node.resolve(vaultPath);
return node
.createHash("sha256")
.update(canonical)
.digest("hex")
.slice(0, VAULT_ID_BYTES * 2);
}
export function sharedBinDir(sharedRoot: string): string {
return node.join(sharedRoot, SHARED_PATH.BIN);
}
export function sharedModelsDir(sharedRoot: string): string {
return node.join(sharedRoot, SHARED_PATH.MODELS);
}
export function vaultsRootDir(sharedRoot: string): string {
return node.join(sharedRoot, SHARED_PATH.VAULTS);
}
export function defaultDataDirFor(sharedRoot: string, vaultId: string): string {
return node.join(vaultsRootDir(sharedRoot), vaultId);
}
function configPath(sharedRoot: string): string {
return node.join(sharedRoot, SHARED_PATH.CONFIG);
}
function registryPath(sharedRoot: string): string {
return node.join(sharedRoot, SHARED_PATH.REGISTRY);
}
function ensureDir(path: string): void {
if (!node.existsSync(path)) node.mkdirSync(path, { recursive: true });
}
function writeJsonAtomic(path: string, value: unknown): void {
ensureDir(node.dirname(path));
const tmp = `${path}.tmp`;
node.writeFileSync(tmp, JSON.stringify(value, null, 2));
node.renameSync(tmp, path);
}
function readJson<T>(path: string): T | null {
if (!node.existsSync(path)) return null;
try {
return JSON.parse(node.readFileSync(path, "utf-8")) as T;
} catch {
return null;
}
}
/**
* Manages `<shared-root>/{config.json, registry.json}`. Which server owns the
* shared root is the server's own business: it holds an OS scope lock and
* names itself in a sidecar (see server-manager's readScopeOwner).
* All file I/O is synchronous because the call sites are plugin lifecycle
* events that already block on disk.
*/
export class VaultRegistry {
constructor(public readonly sharedRoot: string) {}
loadConfig(): SharedConfig {
const parsed = readJson<Partial<SharedConfig>>(configPath(this.sharedRoot));
return { ...DEFAULT_SHARED_CONFIG, ...(parsed ?? {}) };
}
saveConfig(config: SharedConfig): void {
writeJsonAtomic(configPath(this.sharedRoot), config);
}
list(): VaultRegistryEntry[] {
return readJson<VaultRegistryEntry[]>(registryPath(this.sharedRoot)) ?? [];
}
get(id: string): VaultRegistryEntry | null {
return this.list().find((e) => e.id === id) ?? null;
}
upsert(entry: VaultRegistryEntry): void {
const entries = this.list().filter((e) => e.id !== entry.id);
entries.push(entry);
writeJsonAtomic(registryPath(this.sharedRoot), entries);
}
/** Return the registered data-dir or the default location for this id. */
resolveDataDir(id: string): string {
return this.get(id)?.dataDir ?? defaultDataDirFor(this.sharedRoot, id);
}
}
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