From ea200a178e3b94299fe7990b7787e988b5678407 Mon Sep 17 00:00:00 2001
From: Takeshi Umeda <noel.yoshiba@gmail.com>
Date: Thu, 16 Apr 2020 15:03:24 +0900
Subject: [PATCH] Fix migration 20200407202420_migrate_unavailable_inboxes
 (#13481)

---
 db/migrate/20200407202420_migrate_unavailable_inboxes.rb | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/db/migrate/20200407202420_migrate_unavailable_inboxes.rb b/db/migrate/20200407202420_migrate_unavailable_inboxes.rb
index 0dce26c6f15..92a3acb5d18 100644
--- a/db/migrate/20200407202420_migrate_unavailable_inboxes.rb
+++ b/db/migrate/20200407202420_migrate_unavailable_inboxes.rb
@@ -4,8 +4,13 @@ class MigrateUnavailableInboxes < ActiveRecord::Migration[5.2]
   def up
     urls = Redis.current.smembers('unavailable_inboxes')
 
-    urls.each do |url|
-      host = Addressable::URI.parse(url).normalized_host
+    hosts = urls.map do |url|
+      Addressable::URI.parse(url).normalized_host
+    end.compact.uniq
+
+    UnavailableDomain.delete_all
+
+    hosts.each do |host|
       UnavailableDomain.create(domain: host)
     end