Class: Simple::Httpd::Rack::DynamicMount

Inherits:
Object
  • Object
show all
Defined in:
lib/simple/httpd/rack/dynamic_mount.rb

Overview

The Simple::Httpd::Mountpoint.build returns a Rack compatible app, which serves HTTP requests according to a set of dynamic ruby scripts and some existing static files.

Constant Summary collapse

H = 
::Simple::Httpd::Helpers
Rack = 
::Simple::Httpd::Rack

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mount_point, path) ⇒ DynamicMount

Returns a new instance of DynamicMount.



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# File 'lib/simple/httpd/rack/dynamic_mount.rb', line 21

def initialize(mount_point, path)
  @mount_point = mount_point
  @path = path

  # determine source_paths and controller_paths
  source_paths = Dir.glob("#{path}/**/*.rb")
  helper_paths, @controller_paths = source_paths.partition { |str| /_helpers\.rb$/ =~ str }

  # build root_controller
  @root_controller = build_root_controller(helper_paths)
end

Instance Attribute Details

#mount_point ⇒ Object (readonly)

Returns the value of attribute mount_point.



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# File 'lib/simple/httpd/rack/dynamic_mount.rb', line 19

def mount_point
  @mount_point
end

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/simple/httpd/rack/dynamic_mount.rb', line 18

def path
  @path
end

Class Method Details

.build(mount_point, path) ⇒ Object 



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# File 'lib/simple/httpd/rack/dynamic_mount.rb', line 10

def self.build(mount_point, path)
  expect! path => String

  url_map = new(mount_point, path).build_url_map

  ::Rack::URLMap.new(url_map)
end

Instance Method Details

#build_root_controller(helper_paths) ⇒ Object

wraps all helpers into a Simple::Httpd::BaseController subclass



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# File 'lib/simple/httpd/rack/dynamic_mount.rb', line 53

def build_root_controller(helper_paths)
  klass = H.subclass ::Simple::Httpd::BaseController,
                     description: "root controller at #{path} w/#{helper_paths.count} helpers"

  H.instance_eval_paths klass, *helper_paths.sort
  klass
end

#build_url_map ⇒ Object

rubocop:disable Metrics/AbcSize



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# File 'lib/simple/httpd/rack/dynamic_mount.rb', line 34

def build_url_map
  @controller_paths.sort.each_with_object({}) do |absolute_path, url_map|
    relative_path = absolute_path[(path.length)..-1]

    relative_mount_point = relative_path == "/root.rb" ? "/" : relative_path.gsub(/\.rb$/, "")
    controller_class = load_controller absolute_path

    ::Simple::Httpd.logger.info do
      absolute_mount_point = File.join(mount_point, relative_mount_point)
      routes_count = controller_class.routes.reject { |verb, _| verb == "HEAD" }.values.sum(&:count)

      "#{absolute_mount_point}: mounting #{routes_count} route(s) from #{H.shorten_path absolute_path}"
    end

    url_map.update relative_mount_point => controller_class
  end
end

#load_controller(path) ⇒ Object

wraps the source file in path into a root_controller



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# File 'lib/simple/httpd/rack/dynamic_mount.rb', line 62

def load_controller(path)
  klass = H.subclass @root_controller, description: "controller at #{path}"
  H.instance_eval_paths klass, path
end