Class: TouchWorker

Inherits:
ApplicationWorker show all
Defined in:
app/workers/touch_worker.rb

Overview

to refresh user record cache we use updated_at column as cache_key context: hungryhubgroup.slack.com/archives/C04BJKAJXS5/p1713243615214859

Constant Summary collapse

MAX_RETRY = 
30
MAX_RETRY_VALUE_FOR_RELOAD =

we use multiple DB, so we need to make sure the data is already synced

3
LOCK_TIMEOUT =

seconds

10

Instance Method Summary collapse

Methods inherited from ApplicationWorker

unlimited_retry

Instance Method Details

#perform(klass, resource_id, column = :updated_at, retry_times = 0) ⇒ Object

An exception will be raised if saving the data fails, triggering a retry there is unlimited retry to retry the job



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# File 'app/workers/touch_worker.rb', line 21

def perform(klass, resource_id, column = :updated_at, retry_times = 0)
  instance = klass.constantize.find_by(id: resource_id)
  if instance.nil? && retry_times < MAX_RETRY_VALUE_FOR_RELOAD
    # re run after x seconds, use exponential backoff
    # x = retry_times * 2
    retry_times = retry_times.to_i + 1
    ::TouchWorker.perform_at(perform_at_time(retry_times), klass, resource_id, column, retry_times)
    return
  end

  column = column.to_sym
  old_value = instance.send column

  # #touch method uses transaction
  instance.touch column.to_sym

  return if instance.send(column) != old_value # success

  retry_times = retry_times.to_i + 1
  raise "Failed to update #{column}" if retry_times > MAX_RETRY

  ::TouchWorker.perform_at(perform_at_time(retry_times), klass, resource_id, column, retry_times)
end