loopback-datasource-juggler/lib/kvao/ttl.js

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'use strict';
var assert = require('assert');
var utils = require('../utils');
/**
* Get remaining expiration (TTL) for a given key.
*
* @param {String} key
* @param {Object} options
* @callback cb
* @param {Error} error
* @param {Number} ttl The remaining TTL for the given key. `undefined` if TTL
* was not initially set.
*
* @header KVAO.ttl(key, cb)
*/
module.exports = function keyValueTtl(key, options, callback) {
if (callback == undefined && typeof options === 'function') {
callback = options;
options = {};
} else if (!options) {
options = {};
}
assert(typeof key === 'string' && key, 'key must be a non-empty string');
assert(typeof options === 'object', 'options must be an object');
callback = callback || utils.createPromiseCallback();
this.getConnector().ttl(this.modelName, key, options, callback);
return callback.promise;
};