CartoDB-SQL-API/batch/leader/locker.js

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'use strict';
var _ = require('underscore');
var RedisPool = require('redis-mpool');
var RedisDistlockLocker = require('./provider/redis-distlock');
var debug = require('../util/debug')('leader-locker');
function Locker(locker) {
this.locker = locker;
}
module.exports = Locker;
Locker.prototype.lock = function(host, ttl, callback) {
debug('Locker.lock(%s, %d)', host, ttl);
this.locker.lock(host, ttl, callback);
};
Locker.prototype.unlock = function(host, callback) {
debug('Locker.unlock(%s)', host);
this.locker.unlock(host, callback);
};
module.exports.create = function createLocker(type, config) {
if (type !== 'redis-distlock') {
throw new Error('Invalid type Locker type. Valid types are: "redis-distlock"');
}
var redisPool = new RedisPool(_.extend({ name: 'batch-distlock' }, config.redisConfig));
var locker = new RedisDistlockLocker(redisPool);
return new Locker(locker);
};