1 files changed, 49 insertions, 0 deletions
diff --git a/config/initializers/forbid_sidekiq_in_transactions.rb b/config/initializers/forbid_sidekiq_in_transactions.rb
new file mode 100644
index 00000000000..a78711fe599
--- /dev/null
+++ b/config/initializers/forbid_sidekiq_in_transactions.rb
@@ -0,0 +1,49 @@
+module Sidekiq
+  module Worker
+    mattr_accessor :skip_transaction_check
+    self.skip_transaction_check = false
+
+    def self.skipping_transaction_check(&block)
+      skip_transaction_check = self.skip_transaction_check
+      self.skip_transaction_check = true
+      yield
+    ensure
+      self.skip_transaction_check = skip_transaction_check
+    end
+
+    module ClassMethods
+      module NoSchedulingFromTransactions
+        NESTING = ::Rails.env.test? ? 1 : 0
+
+        %i(perform_async perform_at perform_in).each do |name|
+          define_method(name) do |*args|
+            return super(*args) if Sidekiq::Worker.skip_transaction_check
+            return super(*args) unless ActiveRecord::Base.connection.open_transactions > NESTING
+
+            raise <<-MSG.strip_heredoc
+              `#{self}.#{name}` cannot be called inside a transaction as this can lead to
+              race conditions when the worker runs before the transaction is committed and
+              tries to access a model that has not been saved yet.
+
+              Use an `after_commit` hook, or include `AfterCommitQueue` and use a `run_after_commit` block instead.
+            MSG
+          end
+        end
+      end
+
+      prepend NoSchedulingFromTransactions
+    end
+  end
+end
+
+module ActiveRecord
+  class Base
+    module SkipTransactionCheckAfterCommit
+      def committed!(*)
+        Sidekiq::Worker.skipping_transaction_check { super }
+      end
+    end
+
+    prepend SkipTransactionCheckAfterCommit
+  end
+end