Class: Attr::Gather::Workflow::DotSerializer Private

Inherits:
Object
  • Object
show all
Defined in:
lib/attr/gather/workflow/dot_serializer.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Instance Method Summary collapse

Constructor Details

#initialize(task_graph) ⇒ DotSerializer

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of DotSerializer.



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# File 'lib/attr/gather/workflow/dot_serializer.rb', line 10

def initialize(task_graph)
  @task_graph = task_graph
end

Instance Method Details

#preview ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/attr/gather/workflow/dot_serializer.rb', line 25

def preview
  Tempfile.open(['task-graph-preview', '.svg']) do |tf|
    IO.popen("dot -Tsvg -o #{tf.path}", 'w') { |p| p.write(to_dot) }
    `xdg-open #{tf.path}`
  end
end

#to_dot ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/attr/gather/workflow/dot_serializer.rb', line 14

def to_dot
  lines = @task_graph.tsort.map { |t| serialize_row(t) }
  joined_lines = lines.flatten.map { |l| "  #{l}" }.join("\n").strip

  <<~DOT
    digraph TaskGraph {
      #{joined_lines}
    }
  DOT
end