Class: Itsi::Server::Config::DSL

Inherits:
Object
  • Object
show all
Defined in:
lib/itsi/server/config/dsl.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent = nil, routes: [], methods: [], protocols: [], hosts: [], ports: [], extensions: [], content_types: [], accepts: [], controller: self, &block) ⇒ DSL

rubocop:disable Metrics/AbcSize,Metrics/MethodLength,Metrics/PerceivedComplexity,Metrics/CyclomaticComplexity



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# File 'lib/itsi/server/config/dsl.rb', line 27

def initialize( # rubocop:disable Metrics/AbcSize,Metrics/MethodLength,Metrics/PerceivedComplexity,Metrics/CyclomaticComplexity
  parent = nil,
  routes: [],
  methods: [],
  protocols: [],
  hosts: [],
  ports: [],
  extensions: [],
  content_types: [],
  accepts: [],
  controller: self,
  &block
)
  @parent           = parent
  @children         = []
  @middleware       = {}

  @controller = controller
  @routes = Array(routes).flatten
  @http_methods = methods.map { |s| s.is_a?(Regexp) ? s : s.to_s }
  @protocols = protocols.map { |s| s.is_a?(Regexp) ? s : s.to_s }
  @hosts = hosts.map { |s| s.is_a?(Regexp) ? s : s.to_s }
  @ports = ports.map { |s| s.is_a?(Regexp) ? s : s.to_s }
  @extensions = extensions.map { |s| s.is_a?(Regexp) ? s : s.to_s }
  @content_types = content_types.map { |s| s.is_a?(Regexp) ? s : s.to_s }
  @accepts = accepts.map { |s| s.is_a?(Regexp) ? s : s.to_s }

  @options = {
    nested_locations: [],
    middleware_loader: lambda do
      @options[:nested_locations].each(&:call)
      @middleware[:app] ||= {}
      @middleware[:app][:app_proc] = @middleware[:app]&.[](:preloader)&.call || DEFAULT_APP[]
      [flatten_routes, Config.errors_to_error_lines(errors)]
    end
  }

  @errors = []
  instance_exec(&block)
end

Instance Attribute Details

#accepts ⇒ Object (readonly)

Returns the value of attribute accepts.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def accepts
  @accepts
end

#children ⇒ Object (readonly)

Returns the value of attribute children.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def children
  @children
end

#content_types ⇒ Object (readonly)

Returns the value of attribute content_types.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def content_types
  @content_types
end

#controller ⇒ Object (readonly)

Returns the value of attribute controller.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def controller
  @controller
end

#extensions ⇒ Object (readonly)

Returns the value of attribute extensions.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def extensions
  @extensions
end

#hosts ⇒ Object (readonly)

Returns the value of attribute hosts.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def hosts
  @hosts
end

#http_methods ⇒ Object (readonly)

Returns the value of attribute http_methods.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def http_methods
  @http_methods
end

#middleware ⇒ Object (readonly)

Returns the value of attribute middleware.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def middleware
  @middleware
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def options
  @options
end

#parent ⇒ Object (readonly)

Returns the value of attribute parent.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def parent
  @parent
end

#ports ⇒ Object (readonly)

Returns the value of attribute ports.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def ports
  @ports
end

#protocols ⇒ Object (readonly)

Returns the value of attribute protocols.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def protocols
  @protocols
end

#routes ⇒ Object (readonly)

Returns the value of attribute routes.



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# File 'lib/itsi/server/config/dsl.rb', line 9

def routes
  @routes
end

Class Method Details

.evaluate(config = Itsi::Server::Config.config_file_path, &blk) ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/itsi/server/config/dsl.rb', line 12

def self.evaluate(config = Itsi::Server::Config.config_file_path, &blk) # rubocop:disable Metrics/MethodLength
  config = new(routes: ["/"]) do
    if blk
      instance_exec(&blk)
    else
      code = IO.read(config)
      instance_eval(code, config.to_s, 1)
    end
    location("*") {}
  end
  [config.options, config.errors]
rescue Exception => e # rubocop:disable Lint/RescueException
  [{}, [[e, e.backtrace[0]]]]
end

Instance Method Details

#deep_stringify_keys(obj) ⇒ Object 



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# File 'lib/itsi/server/config/dsl.rb', line 192

def deep_stringify_keys(obj)
  case obj
  when Hash
    obj.transform_keys!(&:to_s)
    obj.transform_values! { |v| deep_stringify_keys(v) }
  when Array
    obj.map { |v| deep_stringify_keys(v) }
  else
    obj
  end
end

#effective_middleware ⇒ Object 



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# File 'lib/itsi/server/config/dsl.rb', line 166

def effective_middleware
  chain = []
  node = self
  while node
    if node.middleware[:app]&.[](:preloader)
      node.middleware[:app][:app_proc] = node.middleware[:app].delete(:preloader).call
    end
    chain << node
    node = node.parent
  end
  chain.reverse!

  merged = {}

  chain.each do |n|
    n.middleware.each do |k, v|
      merged[k] = if v[:combine]
                    ([merged[k] || []] + [v]).flatten
                  else
                    v
                  end
    end
  end
  deep_stringify_keys(merged)
end

#errors ⇒ Object 



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# File 'lib/itsi/server/config/dsl.rb', line 68

def errors
  @children.map(&:errors).flatten(1) + @errors
end

#file_server(**args) ⇒ Object 



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# File 'lib/itsi/server/config/dsl.rb', line 104

def file_server(**args)
  Itsi.log_info "Note: file_server is an alias for static_assets"
  static_assets(**args)
end

#flatten_routes ⇒ Object 



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# File 'lib/itsi/server/config/dsl.rb', line 109

def flatten_routes
  result = []
  result.concat(@children.flat_map(&:flatten_routes))
  route_options = paths_from_parent
  if route_options
    result << deep_stringify_keys(
      {
        route: Regexp.new("^#{route_options}/?$"),
        methods: @http_methods.any? ? @http_methods : nil,
        protocols: @protocols.any? ? @protocols : nil,
        hosts: @hosts.any? ? @hosts : nil,
        ports: @ports.any? ? @ports : nil,
        extensions: @extensions.any? ? @extensions : nil,
        content_types: @content_types.any? ? @content_types : nil,
        accepts: @accepts.any? ? @accepts : nil,
        middleware: effective_middleware
      }
    )
  end
  result
end

#grpc_reflection(handlers) ⇒ Object 



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# File 'lib/itsi/server/config/dsl.rb', line 92

def grpc_reflection(handlers)
  @grpc_reflected_services ||= []
  @grpc_reflected_services.concat(handlers)

  location("grpc.reflection.v1alpha.ServerReflection/ServerReflectionInfo",
           "grpc.reflection.v1.ServerReflection/ServerReflectionInfo") do
    @middleware[:app] = { preloader: lambda {
      Itsi::Server::GrpcInterface.reflection_for(handlers)
    }, request_type: "grpc" }
  end
end

#paths_from_parent ⇒ Object 



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# File 'lib/itsi/server/config/dsl.rb', line 131

def paths_from_parent
  return nil unless @routes.any?

  route_or_str = @routes.map do |seg|
    case seg
    when Regexp
      seg.source
    else
      parts = seg.split("/")
      parts.map do |part|
        case part
        when /^:([A-Za-z_]\w*)(?:\(([^)]*)\))?$/
          param_name = Regexp.last_match(1)
          custom     = Regexp.last_match(2)
          if custom && !custom.empty?
            "(?<#{param_name}>#{custom})"
          else
            "(?<#{param_name}>[^/]+)"
          end
        when /\*/
          part.gsub(/\*/, ".*")
        else
          Regexp.escape(part)
        end
      end.join("/")
    end
  end.join("|")
  if parent && parent.paths_from_parent && parent.paths_from_parent != "(?:/)"
    "#{parent.paths_from_parent}#{route_or_str != "" ? "(?:#{route_or_str})" : ""}"
  else
    route_or_str = "/#{route_or_str}" unless route_or_str.start_with?("/")
    "(?:#{route_or_str})"
  end
end