module Innate::SingletonMethods

Contains all the module functions for Innate, we keep them in a module so Ramaze can simply use them as well.

script_name, path_info = env, env answer = app.call(env) env.merge!('SCRIPT_NAME' => script_name, 'PATH_INFO' => path_info) answer

Constants

PROXY_OPTIONS

Attributes

app[RW]

Returns an instance of `Rack::Builder` that can be used to start a Innate application.

@return [Rack::Builder]

Public Instance Methods

Rewrite(key, value = nil, &block) click to toggle source
# File lib/innate/route.rb, line 110
def Rewrite(key, value = nil, &block)
  Rewrite[key] = value || block
end
Route(key, value = nil, &block) click to toggle source
# File lib/innate/route.rb, line 106
def Route(key, value = nil, &block)
  Route[key] = value || block
end
at(location) click to toggle source

Answer with object at location.

@example

class Hello
  include Innate::Node
  map '/'
end

Innate.at('/') # => Hello
# File lib/innate/dynamap.rb, line 78
def at(location)
  DynaMap.at(location)
end
call(env) click to toggle source

Treat Innate like a rack application, pass the rack env and optionally the mode the application runs in.

@param [Hash] env rack env @param [Symbol] mode indicates the mode of the application @default mode options.mode @return [Array] with [body, header, status] @author manveru

# File lib/innate.rb, line 185
def call(env)
  Innate.app.call(env)
end
core() click to toggle source

Returns an instance of `Rack::Cascade` for running Innate applications. This method should be called using `Rack::Builder#run`:

Innate.middleware(:dev) do
  run Innate.core
end

@return [Rack::Cascade]

# File lib/innate.rb, line 212
def core
  roots, publics = options[:roots], options[:publics]

  joined  = roots.map { |root| publics.map { |p| File.join(root, p) } }
  joined  = joined.flatten.map { |p| Rack::File.new(p) }
  current = Current.new(Route.new(DynaMap), Rewrite.new(DynaMap))

  return Rack::Cascade.new(joined << current, [404, 405])
end
defer() { || ... } click to toggle source
# File lib/innate/state.rb, line 18
def defer
  outer = ::Thread.current
  ::Thread.new{
    inner = ::Thread.current
    outer.keys.each{|k| inner[k] = outer[k] }
    yield
  }
end
go_figure_root(backtrace, options) click to toggle source

@example Innate can be started by:

Innate.start :file => __FILE__
Innate.start :root => File.dirname(__FILE__)

Either setting will surpress the warning that might show up on startup and tells you it couldn't find an explicit root.

In case these options are not passed we will try to figure out a file named `start.rb` in the process' working directory and assume it's a valid point.

# File lib/innate.rb, line 254
def go_figure_root(backtrace, options)
  if root = options[:root]
    root
  elsif file = options[:file]
    File.dirname(file)
  elsif File.file?('start.rb')
    Dir.pwd
  else
    root = File.dirname(backtrace[0][/^(.*?):\d+/, 1])
    Log.warn "No explicit root folder found, assuming it is #{root}"
    root
  end
end
map(location, object = nil, &block) click to toggle source

Maps the given object or block to location, object must respond to call in order to be of any use.

@example with passed object

Innate.map('/', lambda{|env| [200, {}, "Hello, World"] })
Innate.at('/').call({}) # => [200, {}, "Hello, World"]

@example with passed block

Innate.map('/'){|env| [200, {}, ['Hello, World!']] }
Innate.at('/').call({})
# File lib/innate/dynamap.rb, line 64
def map(location, object = nil, &block)
  DynaMap.map(location, object || block)
end
middleware(mode, &block) click to toggle source

Sets the middleware for the given mode.

@example

Innate.middleware(:dev) do
  use Rack::Head
  use Rack::Reloader

  run Innate.core
end

@param [#to_sym] mode The mode that the middleware belong to. @param [Proc] block Block containing the middleware. This block will be

passed to an instance of `Rack::Builder` and can thus contain everything
this class allows you to use.
# File lib/innate.rb, line 238
def middleware(mode, &block)
  MIDDLEWARE[mode.to_sym] = block

  recompile_middleware(mode)
end
node(location, node = nil) click to toggle source

Convenience method to include the Node module into node and map to a location.

@param [#to_s] location where the node is mapped to @param [Node, nil] node the class that will be a node, will try to

look it up if not given

@return [Class, Module] the node argument or detected class will be

returned

@api external @see SingletonMethods::node_from_backtrace @author manveru

# File lib/innate/node.rb, line 1076
def node(location, node = nil)
  node ||= node_from_backtrace(caller)
  node.__send__(:include, Node)
  node.map(location)
  node
end
node_from_backtrace(backtrace) click to toggle source

Cheap hack that works reasonably well to avoid passing self all the time to Innate::node We simply search the file that Innate::node was called in for the first class definition above the line that Innate::node was called and look up the constant. If there are any problems with this (filenames containing ':' or metaprogramming) just pass the node parameter explicitly to Innate::node

@param [Array<String>, []] backtrace

@return [Class, Module]

@api internal @see SingletonMethods::node @author manveru

# File lib/innate/node.rb, line 1098
def node_from_backtrace(backtrace)
  filename, lineno = backtrace[0].split(':', 2)
  regexp = /^\s*class\s+(\S+)/
  File.readlines(filename)[0..lineno.to_i].reverse.find{|ln| ln =~ regexp }
  const_get($1)
end
recompile_middleware(mode = options[:mode]) click to toggle source

Updates `Innate.app` based on the current mode.

@param [#to_sym] mode The mode to use.

# File lib/innate.rb, line 194
def recompile_middleware(mode = options[:mode])
  mode = mode.to_sym

  if MIDDLEWARE[mode] and options[:mode] == mode
    Innate.app = Rack::Builder.new(&MIDDLEWARE[mode]).to_app
  end
end
setup() click to toggle source
# File lib/innate.rb, line 173
def setup
  options.mode ||= (ENV['RACK_ENV'] || :dev)
end
setup_dependencies() click to toggle source
# File lib/innate.rb, line 165
def setup_dependencies
  options[:setup].each{|obj| obj.setup if obj.respond_to?(:setup) }
end
start(options = {}) click to toggle source

The method that starts the whole business.

Call Innate.start after you defined your application.

Usually, this is a blocking call and will not return until the adapter has finished, which usually happens when you kill the application or hit ^C.

We do return if options.started is true, which indicates that all you wanted to do is setup the environment and update options.

@example usage

# passing options
Innate.start :adapter => :mongrel, :mode => :live

@return [nil] if options.started is true

@option param :host [String] ('0.0.0.0')

IP address or hostname that we respond to - 0.0.0.0 for all

@option param :port [Fixnum] (7000)

Port for the server

@option param :started [boolean] (false)

Indicate that calls Innate::start will be ignored

@option param :adapter [Symbol] (:webrick)

Web server to run on

@option param :setup [Array] ([Innate::Cache, Innate::Node])

Will send ::setup to each element during Innate::start

@option param :header [Hash] ({'Content-Type' => 'text/html'})

Headers that will be merged into the response before Node::call

@option param :trap [String] ('SIGINT')

Trap this signal to issue shutdown, nil/false to disable trap

@option param :mode [Symbol] (:dev)

Indicates which default middleware to use, (:dev|:live)
# File lib/innate.rb, line 113
def start(options = {})
  root, file = options.delete(:root), options.delete(:file)
  innate_options = Innate.options

  found_root = go_figure_root(caller, :root => root, :file => file)
  innate_options.roots = [*found_root] if found_root

  # Convert some top-level option keys to the internal ones that we use.
  PROXY_OPTIONS.each{|given, proxy| options[proxy] = options[given] }
  options.delete_if{|key, value| PROXY_OPTIONS[key] || value.nil? }

  # Merge the user's given options into our existing set, which contains defaults.
  innate_options.merge!(options)

  setup_dependencies

  return if innate_options.started

  innate_options.started = true

  signal = innate_options.trap

  trap(signal){ stop(10) } if signal

  mode = self.options[:mode].to_sym

  # While Rack itself will spit out errors for invalid instances of
  # Rack::Builder these errors are typically not very user friendly.
  if !Innate.app or !MIDDLEWARE[mode]
    raise(
      ArgumentError,
      "The mode \"#{mode}\" does not have a set of middleware defined. "              "You can define these middleware using "              "#{self}.middleware(:#{mode}) { ... }"
    )
  end

  start!
end
start!(mode = options[:mode]) click to toggle source
# File lib/innate.rb, line 153
def start!(mode = options[:mode])
  Adapter.start(Innate.app)
end
stop(wait = 3) click to toggle source
# File lib/innate.rb, line 157
def stop(wait = 3)
  Log.info("Shutdown within #{wait} seconds")
  Timeout.timeout(wait){ teardown_dependencies }
  Timeout.timeout(wait){ exit }
ensure
  exit!
end
sync(&block) click to toggle source

Use this method to achieve thread-safety for sensitive operations.

This should be of most use when manipulating files to prevent other threads from doing the same, no other code will be scheduled during execution of this method.

@param [Proc] block the things you want to execute

# File lib/innate/state.rb, line 14
def sync(&block)
  SEMAPHORE.synchronize(&block)
end
teardown_dependencies() click to toggle source
# File lib/innate.rb, line 169
def teardown_dependencies
  options[:setup].each{|obj| obj.teardown if obj.respond_to?(:teardown) }
end
to(object) click to toggle source

Returns one of the paths the given object is mapped to.

@example

class Hello
  include Innate::Node
  map '/'
end

Innate.to(Hello) # => '/'
# File lib/innate/dynamap.rb, line 92
def to(object)
  DynaMap.to(object)
end