gitlab-ce/lib/gitlab/optimistic_locking.rb

51 lines
1.2 KiB
Ruby

# frozen_string_literal: true
module Gitlab
module OptimisticLocking
MAX_RETRIES = 100
module_function
def retry_lock(subject, max_retries = MAX_RETRIES, name:, &block)
start_time = Gitlab::Metrics::System.monotonic_time
retry_attempts = 0
begin
ActiveRecord::Base.transaction do
yield(subject)
end
rescue ActiveRecord::StaleObjectError
raise unless retry_attempts < max_retries
subject.reset
retry_attempts += 1
retry
ensure
elapsed_time = Gitlab::Metrics::System.monotonic_time - start_time
log_optimistic_lock_retries(
name: name,
retry_attempts: retry_attempts,
elapsed_time: elapsed_time)
end
end
alias_method :retry_optimistic_lock, :retry_lock
def log_optimistic_lock_retries(name:, retry_attempts:, elapsed_time:)
return unless retry_attempts > 0
retry_lock_logger.info(
message: "Optimistic Lock released with retries",
name: name,
retries: retry_attempts,
time_s: elapsed_time)
end
def retry_lock_logger
@retry_lock_logger ||= Gitlab::Services::Logger.build
end
end
end