Function Redlock

redlock.js:119–139

(clients, options)

// `options` object. Properties of the Redlock object should NOT be changed after it is first
// used, as doing so could have unintended consequences for live locks.
function Redlock(clients, options) {
	// set default options
	options = options || {};
	this.driftFactor  = typeof options.driftFactor  === 'number' ? options.driftFactor : defaults.driftFactor;
	this.retryCount   = typeof options.retryCount   === 'number' ? options.retryCount  : defaults.retryCount;
	this.retryDelay   = typeof options.retryDelay   === 'number' ? options.retryDelay  : defaults.retryDelay;
	this.retryJitter  = typeof options.retryJitter  === 'number' ? options.retryJitter : defaults.retryJitter;
	this.lockScript   = typeof options.lockScript   === 'function' ? options.lockScript(lockScript) : lockScript;
	this.unlockScript = typeof options.unlockScript === 'function' ? options.unlockScript(unlockScript) : unlockScript;
	this.extendScript = typeof options.extendScript === 'function' ? options.extendScript(extendScript) : extendScript;
	// set the redis servers from additional arguments
	this.servers = clients;
	if(this.servers.length === 0)
		throw new Error('Redlock must be instantiated with at least one redis server.');

	this.scripts = {
		lockScript: { value: this.lockScript, hash: this._hashScript(this.lockScript) },
		unlockScript: { value: this.unlockScript, hash: this._hashScript(this.unlockScript) },
		extendScript: { value: this.extendScript, hash: this._hashScript(this.extendScript) },
	};
}

// Inherit all the EventEmitter methods, like `on`, and `off`
util.inherits(Redlock, EventEmitter);