Class: Rack::Server

Inherits:
Object show all
Defined in:
lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rack-2.2.5/lib/rack/server.rb

Defined Under Namespace

Classes: Options

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = nil) ⇒ Server

Options may include:

  • :app

    a rack application to run (overrides :config and :builder)
    
  • :builder

    a string to evaluate a Rack::Builder from
    
  • :config

    a rackup configuration file path to load (.ru)
    
  • :environment

    this selects the middleware that will be wrapped around
    your application. Default options available are:
      - development: CommonLogger, ShowExceptions, and Lint
      - deployment: CommonLogger
      - none: no extra middleware
    note: when the server is a cgi server, CommonLogger is not included.
    
  • :server

    choose a specific Rack::Handler, e.g. cgi, fcgi, webrick
    
  • :daemonize

    if true, the server will daemonize itself (fork, detach, etc)
    
  • :pid

    path to write a pid file after daemonize
    
  • :Host

    the host address to bind to (used by supporting Rack::Handler)
    
  • :Port

    the port to bind to (used by supporting Rack::Handler)
    
  • :AccessLog

    webrick access log options (or supporting Rack::Handler)
    
  • :debug

    turn on debug output ($DEBUG = true)
    
  • :warn

    turn on warnings ($-w = true)
    
  • :include

    add given paths to $LOAD_PATH
    
  • :require

    require the given libraries
    

Additional options for profiling app initialization include:

  • :heapfile

    location for ObjectSpace.dump_all to write the output to
    
  • :profile_file

    location for CPU/Memory (StackProf) profile output (defaults to a tempfile)
    
  • :profile_mode

    StackProf profile mode (cpu|wall|object)
    


215
216
217
218
219
220
221
222
223
224
225
226
227
# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rack-2.2.5/lib/rack/server.rb', line 215

def initialize(options = nil)
  @ignore_options = []

  if options
    @use_default_options = false
    @options = options
    @app = options[:app] if options[:app]
  else
    argv = defined?(SPEC_ARGV) ? SPEC_ARGV : ARGV
    @use_default_options = true
    @options = parse_options(argv)
  end
end

Instance Attribute Details

#optionsObject



229
230
231
232
# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rack-2.2.5/lib/rack/server.rb', line 229

def options
  merged_options = @use_default_options ? default_options.merge(@options) : @options
  merged_options.reject { |k, v| @ignore_options.include?(k) }
end

Class Method Details

.default_middleware_by_environmentObject



259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rack-2.2.5/lib/rack/server.rb', line 259

def default_middleware_by_environment
  m = Hash.new {|h, k| h[k] = []}
  m["deployment"] = [
    [Rack::ContentLength],
    logging_middleware,
    [Rack::TempfileReaper]
  ]
  m["development"] = [
    [Rack::ContentLength],
    logging_middleware,
    [Rack::ShowExceptions],
    [Rack::Lint],
    [Rack::TempfileReaper]
  ]

  m
end

.logging_middlewareObject



253
254
255
256
257
# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rack-2.2.5/lib/rack/server.rb', line 253

def logging_middleware
  lambda { |server|
    /CGI/.match?(server.server.name) || server.options[:quiet] ? nil : [Rack::CommonLogger, $stderr]
  }
end

.middlewareObject



277
278
279
# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rack-2.2.5/lib/rack/server.rb', line 277

def middleware
  default_middleware_by_environment
end

.start(options = nil) ⇒ Object

Start a new rack server (like running rackup). This will parse ARGV and provide standard ARGV rackup options, defaulting to load ‘config.ru’.

Providing an options hash will prevent ARGV parsing and will not include any default options.

This method can be used to very easily launch a CGI application, for example:

Rack::Server.start(
  :app => lambda do |e|
    [200, {'Content-Type' => 'text/html'}, ['hello world']]
  end,
  :server => 'cgi'
)

Further options available here are documented on Rack::Server#initialize



167
168
169
# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rack-2.2.5/lib/rack/server.rb', line 167

def self.start(options = nil)
  new(options).start
end

Instance Method Details

#appObject



248
249
250
# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rack-2.2.5/lib/rack/server.rb', line 248

def app
  @app ||= options[:builder] ? build_app_from_string : build_app_and_options_from_config
end

#default_optionsObject



234
235
236
237
238
239
240
241
242
243
244
245
246
# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rack-2.2.5/lib/rack/server.rb', line 234

def default_options
  environment  = ENV['RACK_ENV'] || 'development'
  default_host = environment == 'development' ? 'localhost' : '0.0.0.0'

  {
    environment: environment,
    pid: nil,
    Port: 9292,
    Host: default_host,
    AccessLog: [],
    config: "config.ru"
  }
end

#middlewareObject



282
283
284
# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rack-2.2.5/lib/rack/server.rb', line 282

def middleware
  self.class.middleware
end

#serverObject



330
331
332
333
334
335
336
337
338
339
340
341
# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rack-2.2.5/lib/rack/server.rb', line 330

def server
  @_server ||= Rack::Handler.get(options[:server])

  unless @_server
    @_server = Rack::Handler.default

    # We already speak FastCGI
    @ignore_options = [:File, :Port] if @_server.to_s == 'Rack::Handler::FastCGI'
  end

  @_server
end

#start(&block) ⇒ Object



286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rack-2.2.5/lib/rack/server.rb', line 286

def start(&block)
  if options[:warn]
    $-w = true
  end

  if includes = options[:include]
    $LOAD_PATH.unshift(*includes)
  end

  Array(options[:require]).each do |library|
    require library
  end

  if options[:debug]
    $DEBUG = true
    require 'pp'
    p options[:server]
    pp wrapped_app
    pp app
  end

  check_pid! if options[:pid]

  # Touch the wrapped app, so that the config.ru is loaded before
  # daemonization (i.e. before chdir, etc).
  handle_profiling(options[:heapfile], options[:profile_mode], options[:profile_file]) do
    wrapped_app
  end

  daemonize_app if options[:daemonize]

  write_pid if options[:pid]

  trap(:INT) do
    if server.respond_to?(:shutdown)
      server.shutdown
    else
      exit
    end
  end

  server.run(wrapped_app, **options, &block)
end