Class: OpenapiFirst::Builder

Inherits:
Object
  • Object
show all
Defined in:
lib/openapi_first/builder.rb

Overview

Builds parts of a Definition This knows how to read a resolved OpenAPI document and build Request and Response objects.

Constant Summary collapse

REQUEST_METHODS =

rubocop:disable Metrics/ClassLength

%w[get head post put patch delete trace options].freeze
ParsedParameters = 
Data.define(:path, :query, :header, :cookie, :path_schema, :query_schema, :header_schema,
:cookie_schema)

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(contents, filepath:, config:) ⇒ Builder

Returns a new instance of Builder.



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# File 'lib/openapi_first/builder.rb', line 20

def initialize(contents, filepath:, config:)
  @schemer_configuration = JSONSchemer::Configuration.new(
    meta_schema: detect_meta_schema(contents, filepath),
    insert_property_defaults: true
  )
  @config = config
  @contents = RefResolver.for(contents, dir: filepath && File.dirname(filepath))
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/openapi_first/builder.rb', line 29

def config
  @config
end

Class Method Details

.build_router(contents, filepath:, config:) ⇒ Object

Builds a router from a resolved OpenAPI document.

Parameters:



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# File 'lib/openapi_first/builder.rb', line 16

def self.build_router(contents, filepath:, config:)
  new(contents, filepath:, config:).router
end

Instance Method Details

#build_headers_schema(headers_object) ⇒ Object 



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# File 'lib/openapi_first/builder.rb', line 164

def build_headers_schema(headers_object)
  return unless headers_object&.any?

  properties = {}
  required = []
  headers_object.each do |name, header|
    schema = header['schema']
    next if name.casecmp('content-type').zero?

    properties[name] = schema if schema
    required << name if header['required']
  end
  {
    'properties' => properties,
    'required' => required
  }
end

#build_parameter_schema(parameters) ⇒ Object 



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# File 'lib/openapi_first/builder.rb', line 101

def build_parameter_schema(parameters)
  schema = build_parameters_schema(parameters)

  JSONSchemer.schema(schema,
                     configuration: schemer_configuration,
                     after_property_validation: config.hooks[:after_request_parameter_property_validation])
end

#build_parameters_schema(parameters) ⇒ Object 



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# File 'lib/openapi_first/builder.rb', line 182

def build_parameters_schema(parameters)
  return unless parameters

  properties = {}
  required = []
  parameters.each do |parameter|
    schema = parameter['schema']
    name = parameter['name']
    properties[name] = schema if schema
    required << name if parameter['required']
  end

  {
    'properties' => properties,
    'required' => required
  }
end

#build_requests(path:, request_method:, operation_object:, parameters:) ⇒ Object 



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# File 'lib/openapi_first/builder.rb', line 109

def build_requests(path:, request_method:, operation_object:, parameters:)
  required_body = operation_object['requestBody']&.resolved&.fetch('required', false) == true
  result = operation_object.dig('requestBody', 'content')&.map do |content_type, content_object|
    content_schema = content_object['schema'].schema(
      configuration: schemer_configuration,
      after_property_validation: config.hooks[:after_request_body_property_validation]
    )
    Request.new(path:, request_method:,
                operation_object: operation_object.resolved,
                parameters:, content_type:,
                content_schema:,
                required_body:)
  end || []
  return result if required_body

  result << Request.new(
    path:, request_method:, operation_object: operation_object.resolved,
    parameters:, content_type: nil, content_schema: nil,
    required_body:
  )
end

#build_responses(responses:) ⇒ Object 



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# File 'lib/openapi_first/builder.rb', line 131

def build_responses(responses:)
  return [] unless responses

  responses.flat_map do |status, response_object|
    headers = response_object['headers']&.resolved
    headers_schema = JSONSchemer::Schema.new(
      build_headers_schema(headers),
      configuration: schemer_configuration
    )
    response_object['content']&.map do |content_type, content_object|
      content_schema = content_object['schema'].schema(configuration: schemer_configuration)
      Response.new(status:,
                   headers:,
                   headers_schema:,
                   content_type:,
                   content_schema:)
    end || Response.new(status:, headers:, headers_schema:, content_type: nil,
                        content_schema: nil)
  end
end

#detect_meta_schema(document, filepath) ⇒ Object 



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# File 'lib/openapi_first/builder.rb', line 32

def detect_meta_schema(document, filepath)
  # Copied from JSONSchemer 🙇🏻‍♂️
  version = document['openapi']
  case version
  when /\A3\.1\.\d+\z/
    @document_schema = JSONSchemer.openapi31_document
    document.fetch('jsonSchemaDialect') { JSONSchemer::OpenAPI31::BASE_URI.to_s }
  when /\A3\.0\.\d+\z/
    @document_schema = JSONSchemer.openapi30_document
    JSONSchemer::OpenAPI30::BASE_URI.to_s
  else
    raise Error, "Unsupported OpenAPI version #{version.inspect} #{filepath}"
  end
end

#group_parameters(parameter_definitions) ⇒ Object 



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# File 'lib/openapi_first/builder.rb', line 155

def group_parameters(parameter_definitions)
  result = {}
  parameter_definitions&.each do |parameter|
    (result[parameter['in'].to_sym] ||= []) << parameter
  end
  result[:header]&.reject! { IGNORED_HEADER_PARAMETERS.include?(_1['name']) }
  result
end

#parse_parameters(parameters) ⇒ Object 



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# File 'lib/openapi_first/builder.rb', line 79

def parse_parameters(parameters)
  grouped_parameters = group_parameters(parameters)
  ParsedParameters.new(
    query: grouped_parameters[:query],
    path: grouped_parameters[:path],
    cookie: grouped_parameters[:cookie],
    header: grouped_parameters[:header],
    query_schema: build_parameter_schema(grouped_parameters[:query]),
    path_schema: build_parameter_schema(grouped_parameters[:path]),
    cookie_schema: build_parameter_schema(grouped_parameters[:cookie]),
    header_schema: build_parameter_schema(grouped_parameters[:header])
  )
end

#resolve_parameters(parameters) ⇒ Object 



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# File 'lib/openapi_first/builder.rb', line 93

def resolve_parameters(parameters)
  parameters&.map do |parameter|
    result = parameter.resolved
    result['schema'] = parameter['schema'].resolved
    result
  end.to_a
end

#router ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/openapi_first/builder.rb', line 47

def router # rubocop:disable Metrics/MethodLength
  router = OpenapiFirst::Router.new
  @contents.fetch('paths').each do |path, path_item_object|
    path_parameters = resolve_parameters(path_item_object['parameters'])
    path_item_object.resolved.keys.intersection(REQUEST_METHODS).map do |request_method|
      operation_object = path_item_object[request_method]
      operation_parameters = resolve_parameters(operation_object['parameters'])
      parameters = parse_parameters(operation_parameters.chain(path_parameters))

      build_requests(path:, request_method:, operation_object:,
                     parameters:).each do |request|
        router.add_request(
          request,
          request_method:,
          path:,
          content_type: request.content_type
        )
      end
      build_responses(responses: operation_object['responses']).each do |response|
        router.add_response(
          response,
          request_method:,
          path:,
          status: response.status,
          response_content_type: response.content_type
        )
      end
    end
  end
  router
end