Class: Strum::Pipe

Inherits:
Object
  • Object
show all
Includes:
Service
Defined in:
lib/strum/pipe.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Service

#errors, #failure, #hook, included, #initialize, #method_missing, #on, #respond_to_missing?, #success, #valid?

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Strum::Service

Class Method Details

.call(*units, args: {}, input: {}, unit_input: {}, &block) ⇒ Object 



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# File 'lib/strum/pipe.rb', line 7

def self.call(*units, args: {}, input: {}, unit_input: {}, &block)
  pipe_payload = if input.is_a?(Hash) && unit_input.is_a?(Hash)
                   unit_input.merge(input)
                 else
                   input
                end
  new(pipe_payload, args).execute(*units, input, unit_input, &block)
end

Instance Method Details

#execute(*units, pipe_inputs, pipe_unit_inputs) {|_self| ... } ⇒ Object

Yields:

  • (_self)

Yield Parameters:

  • _self (Strum::Pipe) —

    the object that the method was called on



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# File 'lib/strum/pipe.rb', line 16

def execute(*units, pipe_inputs, pipe_unit_inputs, &block)
  audit
  yield(self) if valid? && block_given?
  output(pipe_inputs)
  continue = true
  while (unit = units.shift) && valid? && continue
    service, service_params = unit
    service_params ||= {}
    raise Strum::Error, "Unit options must be a Hash" unless service_params.is_a?(Hash)

    service_options = service_params[:input] || {}
    result_place = service_params[:to]
    unit_args = case service_params[:args]
                when Hash
                  service_params[:args]
                when Symbol, String
                  { service_params[:args] => service_params[:args] }
                else
                  {}
                end
    clean_output = service_params[:clean_output] || false
    unit_payload = if !clean_output && service_options.is_a?(Hash) && pipe_unit_inputs.is_a?(Hash) && output_value.is_a?(Hash)
                     pipe_unit_inputs.merge(service_options).merge(output_value)
                   else
                     output_value
                   end

    service.public_send(:call, unit_payload, args.merge(unit_args)) do |m|
      service_handlers[:on].each do |key, _handler|
        m.on(key) { |r| hook(k, r) }
      end

      service_handlers[:success].each do |key, _handler|
        if key
          m.success(key) do |result|
            output(key, result)
            continue = false
          end
        else
          m.success do |result|
            if result_place
              inputs[result_place] = result
            elsif !clean_output && result.is_a?(Hash) && output_value.is_a?(Hash)
              output(output_value.merge(result))
            elsif result
              output(result)
            end
          end
        end
      end

      m.failure { |errors| add_errors(errors) }
    end
  end
  valid? ? valid_result(&block) : invalid_result(&block)
end