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SessionStore: Promisify to the extent permitted by express-session

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This commit is contained in:
Richard Hansen 2021-09-16 23:01:10 -04:00
parent 694d3f630e
commit 4733c7d8d3
1 changed files with 24 additions and 22 deletions
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46
src/node/db/SessionStore.js
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@ -1,38 +1,40 @@
'use strict';
/*
* Stores session data in the database
* Source; https://github.com/edy-b/SciFlowWriter/blob/develop/available_plugins/ep_sciflowwriter/db/DirtyStore.js
* This is not used for authors that are created via the API at current
*
* RPB: this module was not migrated to Promises, because it is only used via
* express-session, which can't actually use promises anyway.
*/
const DB = require('./DB');
const Store = require('express-session').Store;
const log4js = require('log4js');
const util = require('util');
const logger = log4js.getLogger('SessionStore');
module.exports = class SessionStore extends Store {
get(sid, fn) {
class SessionStore extends Store {
async _get(sid) {
logger.debug(`GET ${sid}`);
DB.db.get(`sessionstorage:${sid}`, (err, s) => {
if (err != null) return fn(err);
if (!s) return fn(null);
if (typeof s.cookie.expires === 'string') s.cookie.expires = new Date(s.cookie.expires);
if (s.cookie.expires && new Date() >= s.cookie.expires) return this.destroy(sid, fn);
fn(null, s);
});
const s = await DB.get(`sessionstorage:${sid}`);
if (!s) return;
if (typeof s.cookie.expires === 'string') s.cookie.expires = new Date(s.cookie.expires);
if (s.cookie.expires && new Date() >= s.cookie.expires) {
await this._destroy(sid);
return;
}
return s;
}
set(sid, sess, fn) {
async _set(sid, sess) {
logger.debug(`SET ${sid}`);
DB.db.set(`sessionstorage:${sid}`, sess, fn);
await DB.set(`sessionstorage:${sid}`, sess);
}
destroy(sid, fn) {
async _destroy(sid) {
logger.debug(`DESTROY ${sid}`);
DB.db.remove(`sessionstorage:${sid}`, fn);
await DB.remove(`sessionstorage:${sid}`);
}
};
}
// express-session doesn't support Promise-based methods. This is where the callbackified versions
// used by express-session are defined.
for (const m of ['get', 'set', 'destroy']) {
SessionStore.prototype[m] = util.callbackify(SessionStore.prototype[`_${m}`]);
}
module.exports = SessionStore;