Girish Ramakrishnan
34 lines
819 B
JavaScript
34 lines
819 B
JavaScript
/* jslint node:true */
|
|
|
|
'use strict';
|
|
|
|
exports = module.exports = {
|
|
get,
|
|
set,
|
|
_clear: clear
|
|
};
|
|
|
|
const assert = require('assert'),
|
|
database = require('./database.js');
|
|
|
|
const BLOBS_FIELDS = [ 'id', 'value' ].join(',');
|
|
|
|
async function get(id) {
|
|
assert.strictEqual(typeof id, 'string');
|
|
|
|
const result = await database.query(`SELECT ${BLOBS_FIELDS} FROM blobs WHERE id = ?`, [ id ]);
|
|
if (result.length === 0) return null;
|
|
return result[0].value;
|
|
}
|
|
|
|
async function set(id, value) {
|
|
assert.strictEqual(typeof id, 'string');
|
|
assert(value === null || Buffer.isBuffer(value));
|
|
|
|
await database.query('INSERT INTO blobs (id, value) VALUES (?, ?) ON DUPLICATE KEY UPDATE value=VALUES(value)', [ id, value ]);
|
|
}
|
|
|
|
async function clear() {
|
|
await database.query('DELETE FROM blobs');
|
|
}
|