loccon
Version:
A simple local context storage and management tool with CLI and web interfaces. Store, search, and organize code snippets, notes, and development contexts with sharded JSON storage.
113 lines • 4.07 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.FileLock = void 0;
const path = __importStar(require("path"));
const fs = __importStar(require("fs-extra"));
class FileLock {
constructor(storagePath, lockTimeout = 5000) {
this.acquired = false;
this.lockPath = path.join(storagePath, '.lock');
this.lockTimeout = lockTimeout;
}
async acquire() {
const startTime = Date.now();
while (Date.now() - startTime < this.lockTimeout) {
try {
// Try to create lock file exclusively
await fs.writeFile(this.lockPath, process.pid.toString(), { flag: 'wx' });
this.acquired = true;
return;
}
catch (error) {
// Lock file exists, check if process is still running
if (await this.isStale()) {
await this.forceRelease();
continue;
}
// Wait a bit before retrying
await new Promise(resolve => setTimeout(resolve, 100));
}
}
throw new Error(`Failed to acquire lock within ${this.lockTimeout}ms`);
}
async release() {
if (this.acquired) {
try {
await fs.unlink(this.lockPath);
this.acquired = false;
}
catch (error) {
// Lock file might have been cleaned up already
}
}
}
async isStale() {
try {
const lockContent = await fs.readFile(this.lockPath, 'utf8');
const lockPid = parseInt(lockContent.trim());
// Check if the process is still running
try {
process.kill(lockPid, 0); // Signal 0 doesn't kill, just checks existence
return false; // Process is still running
}
catch (error) {
return true; // Process doesn't exist, lock is stale
}
}
catch (error) {
return true; // Can't read lock file, consider it stale
}
}
async forceRelease() {
try {
await fs.unlink(this.lockPath);
}
catch (error) {
// Ignore errors when force releasing
}
}
static async cleanupStaleLocks(storagePath) {
const lockPath = path.join(storagePath, '.lock');
if (await fs.pathExists(lockPath)) {
const lock = new FileLock(storagePath);
if (await lock.isStale()) {
await lock.forceRelease();
}
}
}
}
exports.FileLock = FileLock;
//# sourceMappingURL=filelock.js.map