Class: Strum::Pipe

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

Overview

Strum Pipe

Defined Under Namespace

Classes: Error

Constant Summary collapse

VERSION = 
"0.0.4"

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

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



12
13
14
15
16
17
18
19
 
# File 'lib/strum/pipe.rb', line 12

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

rubocop: disable Metrics/PerceivedComplexity, Metrics/MethodLength, Metrics/CyclomaticComplexity, Metrics/AbcSize, Style/CommentedKeyword

Yields:

  • (_self)

Yield Parameters:

  • _self (Strum::Pipe) —

    the object that the method was called on



21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
 
# File 'lib/strum/pipe.rb', line 21

def execute(*units, pipe_inputs, pipe_unit_inputs, &block) # rubocop: disable Metrics/PerceivedComplexity, Metrics/MethodLength, Metrics/CyclomaticComplexity, Metrics/AbcSize,  Style/CommentedKeyword
  audit
  yield(self) if valid? && block_given?
  output(pipe_inputs)
  continue = true
  pipe_context = self
  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_input = service_params[:input] || {}
    result_arg_key = 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_input.is_a?(Hash) &&
                      pipe_unit_inputs.is_a?(Hash) &&
                      output_value.is_a?(Hash)
                     pipe_unit_inputs.merge(service_input).merge(output_value)
                   else
                     output_value
                   end

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

      pipe_context.service_handlers[:success].each do |key, _handler|
        next unless key

        m.success(key) do |result|
          output(key, result)
          continue = false
        end
      end

      m.success do |result|
        if result_arg_key
          pipe_context.inputs[result_arg_key] = result
        elsif !clean_output && result.is_a?(Hash) && output_value.is_a?(Hash)
          pipe_context.output(pipe_context.output_value.merge(result))
        elsif result
          pipe_context.output(result)
        end
      end

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