Class: Igniter::Extensions::Contracts::Provenance::Builder

Inherits:
Object
  • Object
show all
Defined in:
lib/igniter/extensions/contracts/provenance/builder.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(result) ⇒ Builder

Returns a new instance of Builder.



12
13
14
15
16
17
18
 
# File 'lib/igniter/extensions/contracts/provenance/builder.rb', line 12

def initialize(result)
  @result = result
  @compiled_graph = result.compiled_graph
  @operations = @compiled_graph.operations.reject(&:output?).each_with_object({}) do |operation, memo|
    memo[operation.name] = operation
  end
end

Class Method Details

.build(output_name, result) ⇒ Object 



8
9
10
 
# File 'lib/igniter/extensions/contracts/provenance/builder.rb', line 8

def self.build(output_name, result)
  new(result).build(output_name)
end

Instance Method Details

#build(output_name) ⇒ Object

Raises:

  • (Igniter::Contracts::Error) 


20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
 
# File 'lib/igniter/extensions/contracts/provenance/builder.rb', line 20

def build(output_name)
  output_name = output_name.to_sym

  raise Igniter::Contracts::Error, "execution result does not carry a compiled graph" unless @compiled_graph

  unless output_names.include?(output_name)
    raise Igniter::Contracts::Error,
          "no output named '#{output_name}' in compiled graph"
  end

  source_operation = @operations.fetch(output_name) do
    raise Igniter::Contracts::Error,
          "source node '#{output_name}' for output '#{output_name}' not found in compiled graph"
  end

  Lineage.new(build_trace(source_operation, {}))
end