Module: Gitlab::OptimisticLocking
- Included in:
- Ci::BuildTraceChunk, Ci::CancelPipelineService, Ci::Pipeline, Ci::Ref, Ci::RetryPipelineService, Ci::Stage, Terraform::RemoteStateHandler
- Defined in:
- lib/gitlab/optimistic_locking.rb
Constant Summary collapse
- MAX_RETRIES =
100
Class Method Summary collapse
- .log_optimistic_lock_retries(name:, retry_attempts:, start_time:) ⇒ Object
- .retry_lock(subject, max_retries = MAX_RETRIES, name:, &block) ⇒ Object (also: retry_optimistic_lock)
- .retry_lock_histogram ⇒ Object
- .retry_lock_logger ⇒ Object
Class Method Details
.log_optimistic_lock_retries(name:, retry_attempts:, start_time:) ⇒ Object
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# File 'lib/gitlab/optimistic_locking.rb', line 39 def log_optimistic_lock_retries(name:, retry_attempts:, start_time:) return unless retry_attempts > 0 elapsed_time = ::Gitlab::Metrics::System.monotonic_time - start_time retry_lock_logger.info( message: "Optimistic Lock released with retries", name: name, retries: retry_attempts, time_s: elapsed_time) end |
.retry_lock(subject, max_retries = MAX_RETRIES, name:, &block) ⇒ Object Also known as: retry_optimistic_lock
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# File 'lib/gitlab/optimistic_locking.rb', line 9 def retry_lock(subject, max_retries = MAX_RETRIES, name:, &block) start_time = ::Gitlab::Metrics::System.monotonic_time retry_attempts = 0 # prevent scope override, see https://gitlab.com/gitlab-org/gitlab/-/issues/391186 klass = subject.is_a?(ActiveRecord::Relation) ? subject.klass : subject.class begin klass.transaction do yield(subject) end rescue ActiveRecord::StaleObjectError raise unless retry_attempts < max_retries subject.reset retry_attempts += 1 retry ensure retry_lock_histogram.observe({}, retry_attempts) log_optimistic_lock_retries( name: name, retry_attempts: retry_attempts, start_time: start_time) end end |
.retry_lock_histogram ⇒ Object
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# File 'lib/gitlab/optimistic_locking.rb', line 55 def retry_lock_histogram @retry_lock_histogram ||= Gitlab::Metrics.histogram( :gitlab_optimistic_locking_retries, 'Number of retry attempts to execute optimistic retry lock', {}, [0, 1, 2, 3, 5, 10, 50] ) end |