Class: Puma::DSL

Inherits:
Object
  • Object
show all
Includes:
ConfigDefault
Defined in:
lib/puma/dsl.rb

Overview

The methods that are available for use inside the config file.

Constant Summary

Constants included from ConfigDefault

ConfigDefault::DefaultRackup, ConfigDefault::DefaultTCPHost, ConfigDefault::DefaultTCPPort, ConfigDefault::DefaultWorkerShutdownTimeout, ConfigDefault::DefaultWorkerTimeout

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options, config) ⇒ DSL

Returns a new instance of DSL.



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# File 'lib/puma/dsl.rb', line 16

def initialize(options, config)
  @config = config
  @options = options

  @plugins = []
end

Class Method Details

.load(options, cfg, path) ⇒ Object 



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# File 'lib/puma/dsl.rb', line 7

def self.load(options, cfg, path)
  d = new(options, cfg)
  d._load_from(path)

  options
ensure
  d._offer_plugins
end

Instance Method Details

#_load_from(path) ⇒ Object 



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# File 'lib/puma/dsl.rb', line 23

def _load_from(path)
  if path
    @path = path
    instance_eval(File.read(path), path, 1)
  end
ensure
  _offer_plugins
end

#_offer_plugins ⇒ Object 



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# File 'lib/puma/dsl.rb', line 32

def _offer_plugins
  @plugins.each do |o|
    if o.respond_to? :config
      @options.shift
      o.config self
    end
  end

  @plugins.clear
end

#_run(&blk) ⇒ Object 



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# File 'lib/puma/dsl.rb', line 43

def _run(&blk)
  blk.call self
ensure
  _offer_plugins
end

#activate_control_app(url = "auto", opts = {}) ⇒ Object

Start the Puma control rack app on url. This app can be communicated with to control the main server.



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# File 'lib/puma/dsl.rb', line 97

def activate_control_app(url="auto", opts={})
  if url == "auto"
    path = Configuration.temp_path
    @options[:control_url] = "unix://#{path}"
    @options[:control_url_temp] = path
  else
    @options[:control_url] = url
  end

  if opts[:no_token]
    auth_token = :none
  else
    auth_token = opts[:auth_token]
    auth_token ||= Configuration.random_token
  end

  @options[:control_auth_token] = auth_token
  @options[:control_url_umask] = opts[:umask] if opts[:umask]
end

#after_worker_boot(&block) ⇒ Object

*Cluster mode only* Code to run when a worker boots to setup the process after booting the app.

This can be called multiple times to add hooks.



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# File 'lib/puma/dsl.rb', line 308

def after_worker_boot(&block)
  _ary(:after_worker_fork) << block
end

#app(obj = nil, &block) ⇒ Object

Use obj or block as the Rack app. This allows a config file to be the app itself.



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# File 'lib/puma/dsl.rb', line 86

def app(obj=nil, &block)
  obj ||= block

  raise "Provide either a #call'able or a block" unless obj

  @options[:app] = obj
end

#before_fork(&block) ⇒ Object

*Cluster mode only* Code to run immediately before master process forks workers (once on boot). These hooks can block if necessary to wait for background operations unknown to puma to finish before the process terminates. This can be used to close any connections to remote servers (database, redis, …) that were opened when preloading the code

This can be called multiple times to add hooks.



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# File 'lib/puma/dsl.rb', line 270

def before_fork(&block)
  _ary(:before_fork) << block
end

#bind(url) ⇒ Object

Bind the server to url. tcp:// and unix:// are the only accepted protocols.



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# File 'lib/puma/dsl.rb', line 125

def bind(url)
  _ary(:binds) << url
end

#clean_thread_locals(which = true) ⇒ Object

Work around leaky apps that leave garbage in Thread locals across requests



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# File 'lib/puma/dsl.rb', line 139

def clean_thread_locals(which=true)
  @options[:clean_thread_locals] = which
end

#daemonize(which = true) ⇒ Object

Daemonize the server into the background. Highly suggest that this be combined with pidfile and stdout_redirect.



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# File 'lib/puma/dsl.rb', line 145

def daemonize(which=true)
  @options[:daemon] = which
end

#debug ⇒ Object

Show debugging info



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# File 'lib/puma/dsl.rb', line 198

def debug
  @options[:debug] = true
end

#directory(dir) ⇒ Object

The directory to operate out of.



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# File 'lib/puma/dsl.rb', line 313

def directory(dir)
  @options[:directory] = dir.to_s
end

#drain_on_shutdown(which = true) ⇒ Object

When shutting down, drain the accept socket of pending connections and proces them. This loops over the accept socket until there are no more read events and then stops looking and waits for the requests to finish.



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# File 'lib/puma/dsl.rb', line 153

def drain_on_shutdown(which=true)
  @options[:drain_on_shutdown] = which
end

#environment(environment) ⇒ Object

Set the environment in which the Rack’s app will run.



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# File 'lib/puma/dsl.rb', line 158

def environment(environment)
  @options[:environment] = environment
end

#get(key, default = nil) ⇒ Object 



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# File 'lib/puma/dsl.rb', line 73

def get(key,default=nil)
  @options[key.to_sym] || default
end

#import(file) ⇒ Object

Load configuration from another named file. If the file name is absolute, load the file as an absolute path. Otherwise load it relative to the current config file.



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# File 'lib/puma/dsl.rb', line 57

def import(file)
  if File.extname(file) == ""
    file += ".rb"
  end

  if file[0,1] == "/"
    path = file
  elsif @path
    path = File.join File.dirname(@path), file
  else
    raise "No original configuration path to import relative to"
  end

  DSL.new(@options, @config)._load_from(path)
end

#inject(&blk) ⇒ Object 



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# File 'lib/puma/dsl.rb', line 49

def inject(&blk)
  instance_eval(&blk)
end

#load(file) ⇒ Object

Load additional configuration from a file



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# File 'lib/puma/dsl.rb', line 118

def load(file)
  _ary(:config_files) << file
end

#log_requests(which = true) ⇒ Object

Enable request logging



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# File 'lib/puma/dsl.rb', line 192

def log_requests(which=true)
  @options[:log_requests] = which
end

#lowlevel_error_handler(obj = nil, &block) ⇒ Object

Use obj or block as the low level error handler. This allows a config file to change the default error on the server.



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# File 'lib/puma/dsl.rb', line 339

def lowlevel_error_handler(obj=nil, &block)
  obj ||= block
  raise "Provide either a #call'able or a block" unless obj
  @options[:lowlevel_error_handler] = obj
end

#on_restart(&block) ⇒ Object

Code to run before doing a restart. This code should close logfiles, database connections, etc.

This can be called multiple times to add code each time.



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# File 'lib/puma/dsl.rb', line 167

def on_restart(&block)
  _ary(:on_restart) << block
end

#on_worker_boot(&block) ⇒ Object

*Cluster mode only* Code to run when a worker boots to setup the process before booting the app.

This can be called multiple times to add hooks.



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# File 'lib/puma/dsl.rb', line 290

def on_worker_boot(&block)
  _ary(:before_worker_boot) << block
end

#on_worker_fork(&block) ⇒ Object

*Cluster mode only* Code to run when a master process is about to create the worker by forking itself.

This can be called multiple times to add hooks.



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# File 'lib/puma/dsl.rb', line 299

def on_worker_fork(&block)
  _ary(:before_worker_fork) << block
end

#on_worker_shutdown(&block) ⇒ Object

*Cluster mode only* Code to run immediately before a worker shuts down (after it has finished processing HTTP requests). These hooks can block if necessary to wait for background operations unknown to puma to finish before the process terminates.

This can be called multiple times to add hooks.



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# File 'lib/puma/dsl.rb', line 281

def on_worker_shutdown(&block)
  _ary(:before_worker_shutdown) << block
end

#pidfile(path) ⇒ Object

Store the pid of the server in the file at path.



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# File 'lib/puma/dsl.rb', line 180

def pidfile(path)
  @options[:pidfile] = path.to_s
end

#plugin(name) ⇒ Object

Load the named plugin for use by this configuration



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# File 'lib/puma/dsl.rb', line 79

def plugin(name)
  @plugins << @config.load_plugin(name)
end

#port(port, host = nil) ⇒ Object

Define the TCP port to bind to. Use bind for more advanced options.



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# File 'lib/puma/dsl.rb', line 131

def port(port, host=nil)
  host ||= Configuration::DefaultTCPHost
  bind "tcp://#{host}:#{port}"
end

#preload_app!(answer = true) ⇒ Object

*Cluster mode only* Preload the application before starting the workers and setting up the listen ports. This conflicts with using the phased restart feature, you can’t use both.



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# File 'lib/puma/dsl.rb', line 332

def preload_app!(answer=true)
  @options[:preload_app] = answer
end

#prune_bundler(answer = true) ⇒ Object

This option is used to allow your app and its gems to be properly reloaded when not using preload.

When set, if puma detects that it’s been invoked in the context of Bundler, it will cleanup the environment and re-run itself outside the Bundler environment, but directly using the files that Bundler has setup.

This means that puma is now decoupled from your Bundler context and when each worker loads, it will be loading a new Bundler context and thus can float around as the release dictates.



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# File 'lib/puma/dsl.rb', line 357

def prune_bundler(answer=true)
  @options[:prune_bundler] = answer
end

#queue_requests(answer = true) ⇒ Object

When set to true (the default), workers accept all requests and queue them before passing them to the handlers. When set to false, each worker process accepts exactly as many requests as it is configured to simultaneously handle.

Queueing requests generally improves performance. In some cases, such as a single threaded application, it may be better to ensure requests get balanced across workers.

Note that setting this to false disables HTTP keepalive and slow clients will occupy a handler thread while the request is being sent. A reverse proxy, such as nginx, can handle slow clients and queue requests before they reach puma.



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# File 'lib/puma/dsl.rb', line 397

def queue_requests(answer=true)
  @options[:queue_requests] = answer
end

#quiet(which = true) ⇒ Object

Disable request logging.



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# File 'lib/puma/dsl.rb', line 186

def quiet(which=true)
  @options[:log_requests] = !which
end

#rackup(path) ⇒ Object

Load path as a rackup file.



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# File 'lib/puma/dsl.rb', line 204

def rackup(path)
  @options[:rackup] = path.to_s
end

#restart_command(cmd) ⇒ Object

Command to use to restart puma. This should be just how to load puma itself (ie. ‘ruby -Ilib bin/puma’), not the arguments to puma, as those are the same as the original process.



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# File 'lib/puma/dsl.rb', line 175

def restart_command(cmd)
  @options[:restart_cmd] = cmd.to_s
end

#set_remote_address(val = :socket) ⇒ Object

Control how the remote address of the connection is set. This is configurable because to calculate the true socket peer address a kernel syscall is required which for very fast rack handlers slows down the handling significantly.

There are 4 possible values:

  • :socket (the default) - read the peername from the socket using the

    syscall. This is the normal behavior.

  • :localhost - set the remote address to “127.0.0.1”

  • header: http_header - set the remote address to the value of the

    provided http header. For instance:
`set_remote_address header: "X-Real-IP"`.
Only the first word (as separated by spaces or comma)
is used, allowing headers such as X-Forwarded-For
to be used as well.

  • Any string - this allows you to hardcode remote address to any value

    you wish. Because puma never uses this field anyway, it's
format is entirely in your hands.



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# File 'lib/puma/dsl.rb', line 427

def set_remote_address(val=:socket)
  case val
  when :socket
    @options[:remote_address] = val
  when :localhost
    @options[:remote_address] = :value
    @options[:remote_address_value] = "127.0.0.1".freeze
  when String
    @options[:remote_address] = :value
    @options[:remote_address_value] = val
  when Hash
    if hdr = val[:header]
      @options[:remote_address] = :header
      @options[:remote_address_header] = "HTTP_" + hdr.upcase.gsub("-", "_")
    else
      raise "Invalid value for set_remote_address - #{val.inspect}"
    end
  else
    raise "Invalid value for set_remote_address - #{val}"
  end
end

#shutdown_debug(val = true) ⇒ Object

When a shutdown is requested, the backtraces of all the threads will be written to $stdout. This can help figure out why shutdown is hanging.



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# File 'lib/puma/dsl.rb', line 404

def shutdown_debug(val=true)
  @options[:shutdown_debug] = val
end

#ssl_bind(host, port, opts) ⇒ Object 



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# File 'lib/puma/dsl.rb', line 239

def ssl_bind(host, port, opts)
  if defined?(JRUBY_VERSION)
    keystore_additions = "keystore=#{opts[:keystore]}&keystore-pass=#{opts[:keystore_pass]}"
    bind "ssl://#{host}:#{port}?cert=#{opts[:cert]}&key=#{opts[:key]}&#{keystore_additions}"
  else
    bind "ssl://#{host}:#{port}?cert=#{opts[:cert]}&key=#{opts[:key]}"
  end
end

#state_path(path) ⇒ Object

Use path as the file to store the server info state. This is used by pumactl to query and control the server.



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# File 'lib/puma/dsl.rb', line 251

def state_path(path)
  @options[:state] = path.to_s
end

#stdout_redirect(stdout = nil, stderr = nil, append = false) ⇒ Object

Redirect STDOUT and STDERR to files specified.



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# File 'lib/puma/dsl.rb', line 215

def stdout_redirect(stdout=nil, stderr=nil, append=false)
  @options[:redirect_stdout] = stdout
  @options[:redirect_stderr] = stderr
  @options[:redirect_append] = append
end

#tag(string) ⇒ Object

Additional text to display in process listing



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# File 'lib/puma/dsl.rb', line 362

def tag(string)
  @options[:tag] = string.to_s
end

#tcp_mode ⇒ Object

Run the app as a raw TCP app instead of an HTTP rack app



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# File 'lib/puma/dsl.rb', line 324

def tcp_mode
  @options[:mode] = :tcp
end

#tcp_mode! ⇒ Object

Run Puma in TCP mode



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# File 'lib/puma/dsl.rb', line 210

def tcp_mode!
  @options[:mode] = :tcp
end

#threads(min, max) ⇒ Object

Configure min to be the minimum number of threads to use to answer requests and max the maximum.



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# File 'lib/puma/dsl.rb', line 224

def threads(min, max)
  min = Integer(min)
  max = Integer(max)
  if min > max
    raise "The minimum (#{min}) number of threads must be less than or equal to the max (#{max})"
  end

  if max < 1
    raise "The maximum number of threads (#{max}) must be greater than 0"
  end

  @options[:min_threads] = min
  @options[:max_threads] = max
end

#worker_boot_timeout(timeout) ⇒ Object

*Cluster mode only* Set the timeout for workers to boot



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# File 'lib/puma/dsl.rb', line 375

def worker_boot_timeout(timeout)
  @options[:worker_boot_timeout] = timeout
end

#worker_directory(dir) ⇒ Object

DEPRECATED: The directory to operate out of.



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# File 'lib/puma/dsl.rb', line 318

def worker_directory(dir)
  $stderr.puts "worker_directory is deprecated. Please use `directory`"
  directory dir
end

#worker_shutdown_timeout(timeout) ⇒ Object

*Cluster mode only* Set the timeout for worker shutdown



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# File 'lib/puma/dsl.rb', line 380

def worker_shutdown_timeout(timeout)
  @options[:worker_shutdown_timeout] = timeout
end

#worker_timeout(timeout) ⇒ Object

*Cluster mode only* Set the timeout for workers in seconds When set the master process will terminate any workers that have not checked in within the given timeout. This mitigates hung processes. Default value is 60 seconds.



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# File 'lib/puma/dsl.rb', line 370

def worker_timeout(timeout)
  @options[:worker_timeout] = timeout
end

#workers(count) ⇒ Object

*Cluster mode only* How many worker processes to run.



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# File 'lib/puma/dsl.rb', line 257

def workers(count)
  @options[:workers] = count.to_i
end