52 lines
1.3 KiB
JavaScript
52 lines
1.3 KiB
JavaScript
'use strict';
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var QUEUE = require('../job_queue').QUEUE;
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function QueueSeeker(pool) {
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this.pool = pool;
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}
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module.exports = QueueSeeker;
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QueueSeeker.prototype.seek = function (callback) {
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var initialCursor = ['0'];
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var users = {};
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var self = this;
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this.pool.acquire(QUEUE.DB, function(err, client) {
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if (err) {
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return callback(err);
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}
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self._seek(client, initialCursor, users, function(err, users) {
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self.pool.release(QUEUE.DB, client);
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return callback(err, users);
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});
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});
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};
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QueueSeeker.prototype._seek = function (client, cursor, users, callback) {
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var self = this;
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var redisParams = [cursor[0], 'MATCH', QUEUE.PREFIX + '*'];
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client.scan(redisParams, function(err, currentCursor) {
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// checks if iteration has ended
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if (currentCursor[0] === '0') {
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self.pool.release(QUEUE.DB, client);
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return callback(null, Object.keys(users));
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}
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var queues = currentCursor[1];
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if (!queues) {
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return callback(null);
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}
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queues.forEach(function (queue) {
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var user = queue.substr(QUEUE.PREFIX.length);
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users[user] = true;
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});
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self._seek(client, currentCursor, users, callback);
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});
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};
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