Class: Ductwork::OptimisticLockingExecutionClaim

Inherits:
Object
  • Object
show all
Defined in:
lib/ductwork/optimistic_locking_execution_claim.rb

Instance Method Summary collapse

Constructor Details

#initialize(klass, owner_process_id) ⇒ OptimisticLockingExecutionClaim

Returns a new instance of OptimisticLockingExecutionClaim.



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# File 'lib/ductwork/optimistic_locking_execution_claim.rb', line 5

def initialize(klass, owner_process_id)
  @id = nil
  @execution = nil
  @klass = klass
  @process_id = owner_process_id
end

Instance Method Details

#latest ⇒ Object 



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# File 'lib/ductwork/optimistic_locking_execution_claim.rb', line 12

def latest
  Ductwork::Record.transaction do # rubocop:todo Metrics/BlockLength
    @id = latest_availability_id

    if id.present?
      rows_updated = claim_availability

      if rows_updated == 1
        Ductwork.logger.debug(
          msg: "Job claimed",
          role: :job_worker,
          process_id: process_id,
          availability_id: id
        )

        @execution = find_execution
        execution.update_columns(process_id:)

        update_state
      else
        Ductwork.logger.debug(
          msg: "Did not claim job, avoided race condition",
          role: :job_worker,
          process_id: process_id,
          availability_id: id
        )
      end
    else
      Ductwork.logger.debug(
        msg: "No available job to claim",
        role: :job_worker,
        process_id: process_id,
        pipeline: klass
      )
    end
  end

  execution
end