From 2bb4aec2494ae1204c1b5ffad8d2e52103357988 Mon Sep 17 00:00:00 2001
From: Dragory <dragory.up@gmail.com>
Date: Sun, 18 Feb 2018 21:05:38 +0200
Subject: [PATCH] legacyMigrator: fix duplicate blocked users sometimes
 breaking migration (race condition)

---
 src/legacy/legacyMigrator.js | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/legacy/legacyMigrator.js b/src/legacy/legacyMigrator.js
index a81e9fc..249ffd9 100644
--- a/src/legacy/legacyMigrator.js
+++ b/src/legacy/legacyMigrator.js
@@ -144,22 +144,21 @@ async function migrateLogs() {
 async function migrateBlockedUsers() {
   const now = moment.utc().format('YYYY-MM-DD HH:mm:ss');
   const blockedUsers = await jsonDb.get('blocked', []);
-  const promises = blockedUsers.map(async userId => {
+
+  for (const userId of blockedUsers) {
     const existingBlockedUser = await knex('blocked_users')
       .where('user_id', userId)
       .first();
 
     if (existingBlockedUser) return;
 
-    return knex('blocked_users').insert({
+    await knex('blocked_users').insert({
       user_id: userId,
       user_name: '',
       blocked_by: 0,
       blocked_at: now
     });
-  });
-
-  return Promise.all(promises);
+  }
 }
 
 async function migrateSnippets() {