Arvados » Arvados Workbench 2

In current Arvados API there is a generate_provenance method in container_request_container.rb. It ends with

@svg = ProvenanceHelper::create_provenance_graph(
      nodes, "provenance_svg",
      {
        :request => request,
        :direction => :top_down,
        :output_collections => output_cols,
        :input_collections => input_cols,
        :cr_children_of => {
          cr[:uuid] => child_crs.select{|child| child[:uuid]},
        },
      })

I would like the get the internal data generated by ProvenanceHelper::create_provenance_graph to be exposed as json object via /container_request/provenance/{uuid} endpoint for example. Currently that method produces svg string. But instead doing that its second version should build nodes and edges only as a raw data. That would allow to convert that data into any graph on the client side.