Move EmailOnPush logic to async worker

app/models/project_services/emails_on_push_service.rb

@@ -33,24 +33,7 @@ class EmailsOnPushService < Service
   end
 
   def execute(push_data)
-    before_sha = push_data[:before]
-    after_sha = push_data[:after]
-    branch = push_data[:ref]
-    author_id = push_data[:user_id]
-
-    if before_sha =~ /^000000/ || after_sha =~ /^000000/
-      # skip if new branch was pushed or branch was removed
-      return true
-    end
-
-    compare = Gitlab::Git::Compare.new(project.repository.raw_repository, before_sha, after_sha)
-
-    # Do not send emails if git compare failed
-    return false unless compare && compare.commits.present?
-
-    recipients.split(" ").each do |recipient|
-      Notify.delay.repository_push_email(project_id, recipient, author_id, branch, compare)
-    end
+    EmailsOnPushWorker.perform_async(project_id, recipients, push_data)
   end
 
   def fields
@@ -59,4 +42,3 @@ class EmailsOnPushService < Service
     ]
   end
 end
-

app/workers/emails_on_push_worker.rb

+class EmailsOnPushWorker
+  include Sidekiq::Worker
+
+  def perform(project_id, recipients, push_data)
+    project = Project.find(project_id)
+    before_sha = push_data["before"]
+    after_sha = push_data["after"]
+    branch = push_data["ref"]
+    author_id = push_data["user_id"]
+
+    if before_sha =~ /^000000/ || after_sha =~ /^000000/
+      # skip if new branch was pushed or branch was removed
+      return true
+    end
+
+    compare = Gitlab::Git::Compare.new(project.repository.raw_repository, before_sha, after_sha)
+
+    # Do not send emails if git compare failed
+    return false unless compare && compare.commits.present?
+
+    recipients.split(" ").each do |recipient|
+      Notify.delay.repository_push_email(project_id, recipient, author_id, branch, compare)
+    end
+  end
+end