Class: Periodically::Job

Inherits:
Object
  • Object
show all
Defined in:
lib/periodically/job.rb

Instance Method Summary collapse

Constructor Details

#initialize(klass, method, opts) ⇒ Job

Returns a new instance of Job.



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# File 'lib/periodically/job.rb', line 7

def initialize(klass, method, opts)
  @klass = klass
  @method = method
  @class_key = klass.name
  @job_key = "#{@class_key}/#{method.to_s}"
  @opts = opts
end

Instance Method Details

#execute_instance(instance) ⇒ Object 



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# File 'lib/periodically/job.rb', line 24

def execute_instance(instance)
  return_value =
    begin
      instance.send(@method)
    rescue => e
      stored_error = "#{e.message}\n#{e.backtrace.join("\n")}"
      Periodically.logger.error("Job instance[#{instance}] execution raised an exception\n#{stored_error}")
      new_error_count = increase_instance_error_count(instance)
      lock_instance(instance, DEFAULT_ERROR_DELAY.call(new_error_count))
      store_instance_error(instance, stored_error)
      return
    end

  if return_value.is_a?(Periodically::Defer::DeferInstance)
    lock_instance(instance, return_value.duration)
  elsif return_value.is_a?(Periodically::Defer::DeferJob)
    Job.lock_key("locks:#{@job_key}", return_value.duration)
  elsif return_value.is_a?(Periodically::Defer::DeferClass)
    Job.lock_key("locks:#{@class_key}", return_value.duration)
  end

  clear_instance_error_count(instance)
end

#poll_next_instance ⇒ Object 



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# File 'lib/periodically/job.rb', line 15

def poll_next_instance
  return if job_or_class_locked?

  where = @opts[:on].call()
  where.to_a.find do |obj|
    !instance_locked?(obj)
  end
end