mastodon/app/helpers/database_helper.rb

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# frozen_string_literal: true
module DatabaseHelper
def replica_enabled?
ENV['REPLICA_DB_NAME'] || ENV.fetch('REPLICA_DATABASE_URL', nil)
end
module_function :replica_enabled?
def with_read_replica(&block)
if replica_enabled?
ApplicationRecord.connected_to(role: :reading, prevent_writes: true, &block)
else
yield
end
end
def with_primary(&block)
if replica_enabled?
ApplicationRecord.connected_to(role: :writing, &block)
else
yield
end
end
end