1 files changed, 36 insertions, 0 deletions
diff --git a/lib/gitlab/query_limiting.rb b/lib/gitlab/query_limiting.rb
new file mode 100644
index 00000000000..9f69a9e4a39
--- /dev/null
+++ b/lib/gitlab/query_limiting.rb
@@ -0,0 +1,36 @@
+module Gitlab
+  module QueryLimiting
+    # Returns true if we should enable tracking of query counts.
+    #
+    # This is only enabled in production/staging if we're running on GitLab.com.
+    # This ensures we don't produce any errors that users can't do anything
+    # about themselves.
+    def self.enable?
+      Rails.env.development? || Rails.env.test?
+    end
+
+    # Allows the current request to execute any number of SQL queries.
+    #
+    # This method should _only_ be used when there's a corresponding issue to
+    # reduce the number of queries.
+    #
+    # The issue URL is only meant to push developers into creating an issue
+    # instead of blindly whitelisting offending blocks of code.
+    def self.whitelist(issue_url)
+      return unless enable_whitelist?
+
+      unless issue_url.start_with?('https://')
+        raise(
+          ArgumentError,
+          'You must provide a valid issue URL in order to whitelist a block of code'
+        )
+      end
+
+      Transaction&.current&.whitelisted = true
+    end
+
+    def self.enable_whitelist?
+      Rails.env.development? || Rails.env.test?
+    end
+  end
+end