28 lines
642 B
JavaScript
28 lines
642 B
JavaScript
|
"use strict";
|
||
|
|
|
||
|
|
const sqlite3 = require('sqlite3');
|
||
|
|
|
||
|
|
class SqliteBackend {
|
||
|
|
constructor(config) {
|
||
|
|
this.config = config;
|
||
|
|
sqlite3.verbose();
|
||
|
|
this.db = new sqlite3.Database(this.config.db, sqlite3.OPEN_READONLY);
|
||
|
|
console.log(this.db);
|
||
|
|
}
|
||
|
|
|
||
|
|
find(tag, callback) {
|
||
|
|
this.db.get("SELECT uuid FROM tags WHERE tag = ? AND _ROWID_ >= (abs(random()) % (SELECT max(_ROWID_) FROM tags)) LIMIT 1", tag, (err, row) => {
|
||
|
|
if (typeof row === 'undefined') {
|
||
|
|
return callback();
|
||
|
|
}
|
||
|
|
callback(row['uuid']);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = function(config) {
|
||
|
|
return new SqliteBackend(config);
|
||
|
|
};
|
||
|
|
|
||
|
|
// vim:ts=2 sw=2 et:
|