1 files changed, 32 insertions, 0 deletions
diff --git a/db/migrate/20200922052316_create_issue_email_participants.rb b/db/migrate/20200922052316_create_issue_email_participants.rb
new file mode 100644
index 00000000000..a8aeb9d9a5a
--- /dev/null
+++ b/db/migrate/20200922052316_create_issue_email_participants.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+class CreateIssueEmailParticipants < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    unless table_exists?(:issue_email_participants)
+      with_lock_retries do
+        create_table :issue_email_participants do |t|
+          t.references :issue, index: false, null: false, foreign_key: { on_delete: :cascade }
+          t.datetime_with_timezone :created_at, null: false
+          t.datetime_with_timezone :updated_at, null: false
+          t.text :email, null: false
+
+          t.index [:issue_id, :email], unique: true
+        end
+      end
+
+      add_text_limit(:issue_email_participants, :email, 255)
+    end
+  end
+
+  def down
+    with_lock_retries do
+      drop_table :issue_email_participants
+    end
+  end
+end