Class: Etna::Clients::Magma::WalkModelTreeWorkflow

Inherits:
Struct
  • Object
show all
Defined in:
lib/etna/clients/magma/workflows/walk_model_tree_workflow.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(**args) ⇒ WalkModelTreeWorkflow

Returns a new instance of WalkModelTreeWorkflow.



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# File 'lib/etna/clients/magma/workflows/walk_model_tree_workflow.rb', line 10

def initialize(**args)
  super(**({}.update(args)))
  @template_for = {}
end

Instance Attribute Details

#logger ⇒ Object

Returns the value of attribute logger

Returns:

  • (Object) —

    the current value of logger



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# File 'lib/etna/clients/magma/workflows/walk_model_tree_workflow.rb', line 9

def logger
  @logger
end

#magma_crud ⇒ Object

Returns the value of attribute magma_crud

Returns:

  • (Object) —

    the current value of magma_crud



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# File 'lib/etna/clients/magma/workflows/walk_model_tree_workflow.rb', line 9

def magma_crud
  @magma_crud
end

Instance Method Details

#all_attributes(template:) ⇒ Object 



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# File 'lib/etna/clients/magma/workflows/walk_model_tree_workflow.rb', line 15

def all_attributes(template:)
  template.attributes.attribute_keys
end

#attribute_included?(mask, attribute_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/etna/clients/magma/workflows/walk_model_tree_workflow.rb', line 44

def attribute_included?(mask, attribute_name)
  return true if mask.nil?
  mask.include?(attribute_name)
end

#masked_attributes(template:, model_attributes_mask:, model_name:) ⇒ Object 



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# File 'lib/etna/clients/magma/workflows/walk_model_tree_workflow.rb', line 30

def masked_attributes(template:, model_attributes_mask:, model_name:)
  attributes_mask = model_attributes_mask[model_name]

  if attributes_mask.nil?
    return [
      safe_group_attributes(template: template, attributes_mask: attributes_mask),
      all_attributes(template: template)
    ]
  end

  [(safe_group_attributes(template: template, attributes_mask: attributes_mask) + [template.identifier, 'parent']).uniq,
    attributes_mask]
end

#safe_group_attributes(template:, attributes_mask:) ⇒ Object 



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# File 'lib/etna/clients/magma/workflows/walk_model_tree_workflow.rb', line 19

def safe_group_attributes(template:, attributes_mask:)
  result = []

  template.attributes.attribute_keys.each do |attribute_name|
    next if template.attributes.attribute(attribute_name).attribute_type == Etna::Clients::Magma::AttributeType::TABLE
    result << attribute_name if attribute_included?(attributes_mask, attribute_name)
  end

  result
end

#template_for(model_name) ⇒ Object 



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# File 'lib/etna/clients/magma/workflows/walk_model_tree_workflow.rb', line 49

def template_for(model_name)
  @template_for[model_name] ||= magma_crud.magma_client.retrieve(RetrievalRequest.new(
      project_name: magma_crud.project_name,
      model_name: model_name,
      record_names: [],
      attribute_names: [],
  )).models.model(model_name).template
end

#walk_from(model_name, record_names = 'all', model_attributes_mask: {}, model_filters: {}, page_size: 100, &block) ⇒ Object 



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# File 'lib/etna/clients/magma/workflows/walk_model_tree_workflow.rb', line 58

def walk_from(
    model_name,
    record_names = 'all',
    model_attributes_mask: {},
    model_filters: {},
    page_size: 100,
    &block)
  q = [ { model_name: model_name, from: nil, record_names: record_names } ]
  seen = {}

  while (path = q.pop)
    model_name = path[:model_name]
    seen[model_name] ||= Set.new

    new_record_names = path[:record_names]

    if new_record_names.is_a?(Array)
      new_record_names -= seen[model_name].to_a

      next if new_record_names.empty?

      seen[model_name].merge(new_record_names)
    end

    template = template_for(model_name)
    query_attributes, walk_attributes = masked_attributes(
      template: template,
      model_attributes_mask: model_attributes_mask,
      model_name: model_name
    )

    request = RetrievalRequest.new(
        project_name: magma_crud.project_name,
        model_name: model_name,
        record_names: new_record_names,
        filter: model_filters[model_name],
        attribute_names: query_attributes,
        page_size: page_size, page: 1
    )

    related_models = {}

    magma_crud.page_records(model_name, request) do |response|
      logger&.info("Fetched page of #{model_name}")
      tables = []
      collections = []
      links = []
      attributes = []
      model = response.models.model(model_name)

      seen[model_name].merge( model.documents.document_keys )

      template.attributes.attribute_keys.each do |attr_name|
        attr = template.attributes.attribute(attr_name)
        if attr.attribute_type == AttributeType::TABLE && attribute_included?(walk_attributes, attr_name)
          tables << attr_name
        end

        next unless attribute_included?(query_attributes, attr_name)
        attributes << attr_name

        if attr.attribute_type == AttributeType::COLLECTION
          related_models[attr.link_model_name] ||= Set.new
          collections << attr_name
        elsif attr.attribute_type == AttributeType::LINK
          related_models[attr.link_model_name] ||= Set.new
          links << attr_name
        elsif attr.attribute_type == AttributeType::CHILD
          related_models[attr.link_model_name] ||= Set.new
          links << attr_name
        elsif attr.attribute_type == AttributeType::PARENT && attribute_included?(walk_attributes, attr_name)
          related_models[attr.link_model_name] ||= Set.new
          links << attr_name
        end
      end

      table_data = {}
      # Request tables in an inner chunk.
      tables.each do |table_attr|
        request = RetrievalRequest.new(
          project_name: magma_crud.project_name,
          model_name: model_name,
          record_names: model.documents.document_keys,
          attribute_names: [table_attr],
        )

        logger&.info("Fetching inner table #{table_attr}...")

        table_response = magma_crud.magma_client.retrieve(request)
        d = table_response.models.model(model_name).documents
        table_d = table_response.models.model(table_attr).documents
        table_data[table_attr] = d.document_keys.map do |id|
          [id, d.document(id)[table_attr].map { |tid| table_d.document(tid) }]
        end.to_h
      end

      model.documents.document_keys.each do |key|
        record = model.documents.document(key).slice(*attributes)

        # Inline tables inside the record
        tables.each do |table_attr|
          record[table_attr] = table_data[table_attr][key] unless table_data[table_attr].nil?
        end

        collections.each do |collection_attr|
          record[collection_attr].each do |collected_id|
            related_models[template.attributes.attribute(collection_attr).link_model_name].add(collected_id)
          end unless record[collection_attr].nil?
        end

        links.each do |link_attr|
          related_models[template.attributes.attribute(link_attr).link_model_name].add(record[link_attr]) unless record[link_attr].nil?
        end

        yield template, record
      end
    end

    related_models.each do |link_model_name, id_set|
      next if id_set.empty?
      q.push({ model_name: link_model_name, from: model_name, record_names: id_set.to_a })
    end
  end
end