FIX: race condition in generateAddress (closes #93)

2020-08-03 13:00:29 +01:00 · 2020-08-03 13:00:29 +01:00 · a079399759
commit a079399759
parent 00f7923568
1 changed files with 6 additions and 0 deletions
--- a/class/User.js
+++ b/class/User.js
@ -107,6 +107,12 @@ export class User {
   * @returns {Promise<any>}
   */
  async generateAddress() {
+    let lock = new Lock(this._redis, 'generating_address_' + this._userid);
+    if (!(await lock.obtainLock())) {
+      // someone's already generating address
+      return;
+    }
+
    let self = this;
    return new Promise(function(resolve, reject) {
      self._lightning.newAddress({ type: 0 }, async function(err, response) {