Module: GraphQL::Stitching

Defined in:
lib/graphql/stitching.rb,
lib/graphql/stitching/util.rb,
lib/graphql/stitching/shaper.rb,
lib/graphql/stitching/gateway.rb,
lib/graphql/stitching/planner.rb,
lib/graphql/stitching/request.rb,
lib/graphql/stitching/version.rb,
lib/graphql/stitching/composer.rb,
lib/graphql/stitching/executor.rb,
lib/graphql/stitching/supergraph.rb,
lib/graphql/stitching/remote_client.rb,
lib/graphql/stitching/planner_operation.rb,
lib/graphql/stitching/composer/base_validator.rb,
lib/graphql/stitching/composer/validate_boundaries.rb,
lib/graphql/stitching/composer/validate_interfaces.rb

Defined Under Namespace

Classes: Composer, Executor, Gateway, Planner, PlannerOperation, RemoteClient, Request, Shaper, StitchingError, Supergraph, Util

Constant Summary collapse

EMPTY_OBJECT = 
{}.freeze
VERSION = 
"0.2.3"

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.stitch_directive ⇒ Object 



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# File 'lib/graphql/stitching.rb', line 13

def stitch_directive
  @stitch_directive ||= "stitch"
end

Class Method Details

.schema_from_definition(sdl, stitch_directives:) ⇒ Object 



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# File 'lib/graphql/stitching.rb', line 23

def schema_from_definition(sdl, stitch_directives:)
  ast = GraphQL.parse(sdl)

  if stitch_directives&.any?
    directive_definition = ast.definitions.find do |d|
      d.is_a?(GraphQL::Language::Nodes::DirectiveDefinition) && d.name == stitch_directive
    end

    if !directive_definition
      directive_sdl = "directive @#{stitch_directive}(key: String!) repeatable on FIELD_DEFINITION"
      directive_definition = GraphQL.parse(directive_sdl).definitions.first
      ast.send(:merge!, { definitions: [directive_definition, *ast.definitions] })
    end
  end

  stitch_directives.each do |config|
    config[:type_name] ||= "Query"

    type_node = ast.definitions.find do |d|
      d.is_a?(GraphQL::Language::Nodes::ObjectTypeDefinition) && d.name == config[:type_name]
    end

    raise StitchingError, "invalid type name `#{config[:type_name]}`." unless type_node

    field_node = type_node.fields.find do |f|
      f.name == config[:field_name]
    end

    raise StitchingError, "invalid field name `#{config[:field_name]}`." unless field_node

    field_node.send(:merge!, {
      directives: [
        *field_node.directives,
        GraphQL::Language::Nodes::Directive.new(
          arguments: [GraphQL::Language::Nodes::Argument.new(name: "key", value: config[:key])],
          name: stitch_directive,
        )
      ]
    })
  end

  if GraphQL::Schema::BuildFromDefinition.method(:from_document).parameters.first.last == :document
    # GraphQL v1.13.x
    GraphQL::Schema::BuildFromDefinition.from_document(ast, default_resolve: nil)
  else
    # GraphQL v2
    GraphQL::Schema::BuildFromDefinition.from_document(GraphQL::Schema, ast, default_resolve: nil)
  end
end

.stitching_directive_names ⇒ Object 



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# File 'lib/graphql/stitching.rb', line 19

def stitching_directive_names
  [stitch_directive]
end