HackMD/lib/workers/historyUpdater.js

66 lines
No EOL
1.8 KiB
JavaScript

// external modules
var async = require('async');
// core
var config = require("../config.js");
var logger = require("../logger.js");
var models = require("../models");
process.on('message', function (data) {
if (!data || !data.msg || data.msg !== 'update history' || !data.caches) return process.exit();
var caches = data.caches;
async.each(Object.keys(caches), function (key, callback) {
var cache = caches[key];
if (config.debug) logger.info("history updater found dirty history: " + key);
var history = parseHistoryToArray(cache);
finishUpdateHistory(key, history, function (err, count) {
if (err) return callback(err, null);
if (!count) return callback(null, null);
process.send({
msg: 'check',
userid: key
});
return callback(null, null);
});
}, function (err) {
if (err) logger.error('history updater error', err);
process.exit();
});
});
function finishUpdateHistory(userid, history, callback) {
models.User.update({
history: JSON.stringify(history)
}, {
where: {
id: userid
}
}).then(function (count) {
return callback(null, count);
}).catch(function (err) {
return callback(err, null);
});
}
function parseHistoryToArray(history) {
var _history = [];
Object.keys(history).forEach(function (key) {
var item = history[key];
_history.push(item);
});
return _history;
}
function parseHistoryToObject(history) {
var _history = {};
for (var i = 0, l = history.length; i < l; i++) {
var item = history[i];
_history[item.id] = item;
}
return _history;
}
module.exports = {
parseHistoryToArray: parseHistoryToArray,
parseHistoryToObject: parseHistoryToObject
};