Class: Transacted::Transaction

Inherits:
Object
  • Object
show all
Defined in:
lib/transacted/transaction.rb

Instance Method Summary collapse

Constructor Details

#initialize(actions) ⇒ Transaction

Returns a new instance of Transaction.



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# File 'lib/transacted/transaction.rb', line 3

def initialize actions
  raise "Actions must be of type Transacted::Action" if not are_actions? actions
  @actions = actions
end

Instance Method Details

#are_actions?(action_or_actions) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/transacted/transaction.rb', line 8

def are_actions? action_or_actions
  [*action_or_actions].all? {|action| action.is_a? Transacted::Action }
end

#execute ⇒ Object 



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# File 'lib/transacted/transaction.rb', line 16

def execute
  @executed_actions = []
  @actions_left = @actions.clone
  direction = :up
  status = nil
  while direction != nil do
    if direction == :up

      if @actions_left.count == 0
        direction == nil
        return :execution_success
      end

      action = @actions_left.shift

      begin
        action_value = action.up
        @executed_actions.push action
        direction = :down if action_value == false
      rescue Exception => e
        direction = :down
      end
      
    elsif direction == :down 

      if @executed_actions.count == 0
        direction == nil
        return :rollback_success
      end

      action = @executed_actions.pop

      begin
        action_value = action.down
        return :rollback_failure if action_value == false
      rescue
        return :rollback_failure
      end
    end
  end
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/transacted/transaction.rb', line 12

def valid?
  are_actions? @actions
end