Make LetsEncrypt order expiration shorter

app/services/pages_domains/create_acme_order_service.rb

@@ -3,6 +3,9 @@
 module PagesDomains
   class CreateAcmeOrderService
     attr_reader :pages_domain
+    # TODO: remove this hack after https://gitlab.com/gitlab-org/gitlab/issues/30146 is implemented
+    # This makes GitLab automatically retry the certificate obtaining process every 2 hours if process wasn't finished
+    SHORT_EXPIRATION_DELAY = 2.hours
 
     def initialize(pages_domain)
       @pages_domain = pages_domain
@@ -17,7 +20,7 @@ module PagesDomains
       private_key = OpenSSL::PKey::RSA.new(4096)
       saved_order = pages_domain.acme_orders.create!(
         url: order.url,
-        expires_at: order.expires,
+        expires_at: [order.expires, SHORT_EXPIRATION_DELAY.from_now].min,
         private_key: private_key.to_pem,
 
         challenge_token: challenge.token,

changelogs/unreleased/acme-order-short-expiration.yml

+---
+title: Retry obtaining Let's Encrypt certificates every 2 hours if it wasn't successful
+merge_request: 22336
+author:
+type: fixed

spec/services/pages_domains/create_acme_order_service_spec.rb

@@ -45,12 +45,34 @@ describe PagesDomains::CreateAcmeOrderService do
     expect { OpenSSL::PKey::RSA.new(saved_order.private_key) }.not_to raise_error
   end
 
-  it 'properly saves order attributes' do
+  it 'properly saves order url' do
     service.execute
 
     saved_order = PagesDomainAcmeOrder.last
     expect(saved_order.url).to eq(order_double.url)
-    expect(saved_order.expires_at).to be_like_time(order_double.expires)
+  end
+
+  context 'when order expires in 2 days' do
+    it 'sets expiration time in 2 hours' do
+      Timecop.freeze do
+        service.execute
+
+        saved_order = PagesDomainAcmeOrder.last
+        expect(saved_order.expires_at).to be_like_time(2.hours.from_now)
+      end
+    end
+  end
+
+  context 'when order expires in an hour' do
+    it 'sets expiration time accordingly to order' do
+      Timecop.freeze do
+        allow(order_double).to receive(:expires).and_return(1.hour.from_now)
+        service.execute
+
+        saved_order = PagesDomainAcmeOrder.last
+        expect(saved_order.expires_at).to be_like_time(1.hour.from_now)
+      end
+    end
   end
 
   it 'properly saves challenge attributes' do