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rails--rails/railties/lib/rails/application/bootstrap.rb
wycats 9cfeefb637 Reorganized initializers a bit to enable better hooks for common cases without the need for Railtie. Specifically, the following hooks were added:
* before_configuration: this hook is run immediately after the Application class 
  comes into existence, but before the user has added any configuration. This is
  the appropriate place to set configuration for your plugin
* before_initialize: This is run after all of the user's configuration has completed,
  but before any initializers have begun (in other words, it runs right after
  config/environments/{development,production,test}.rb)
* after_initialize: This is run after all of the initializers have run. It is an
  appropriate place for forking in a preforking setup

Each of these hooks may be used via ActiveSupport.on_load(name) { }. In all these cases, the context inside the block will be the Application object. This means that for simple cases, you can use these hooks without needing to create a Railtie.
2010-05-15 06:09:07 -07:00

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require "active_support/notifications"
module Rails
class Application
module Bootstrap
include Initializable
initializer :load_environment_config do
environment = config.paths.config.environments.to_a.first
require environment if environment
end
initializer :load_active_support do
require 'active_support/dependencies'
require "active_support/all" unless config.active_support.bare
end
# Preload all frameworks specified by the Configuration#frameworks.
# Used by Passenger to ensure everything's loaded before forking and
# to avoid autoload race conditions in JRuby.
initializer :preload_frameworks do
ActiveSupport::Autoload.eager_autoload! if config.preload_frameworks
end
# Initialize the logger early in the stack in case we need to log some deprecation.
initializer :initialize_logger do
Rails.logger ||= config.logger || begin
path = config.paths.log.to_a.first
logger = ActiveSupport::BufferedLogger.new(path)
logger.level = ActiveSupport::BufferedLogger.const_get(config.log_level.to_s.upcase)
logger.auto_flushing = false if Rails.env.production?
logger
rescue StandardError => e
logger = ActiveSupport::BufferedLogger.new(STDERR)
logger.level = ActiveSupport::BufferedLogger::WARN
logger.warn(
"Rails Error: Unable to access log file. Please ensure that #{path} exists and is chmod 0666. " +
"The log level has been raised to WARN and the output directed to STDERR until the problem is fixed."
)
logger
end
end
# Initialize cache early in the stack so railties can make use of it.
initializer :initialize_cache do
unless defined?(RAILS_CACHE)
silence_warnings { Object.const_set "RAILS_CACHE", ActiveSupport::Cache.lookup_store(config.cache_store) }
if RAILS_CACHE.respond_to?(:middleware)
config.middleware.insert_after(:"Rack::Lock", RAILS_CACHE.middleware)
end
end
end
initializer :set_clear_dependencies_hook do
unless config.cache_classes
ActionDispatch::Callbacks.after do
ActiveSupport::Dependencies.clear
end
end
end
# Sets the dependency loading mechanism.
# TODO: Remove files from the $" and always use require.
initializer :initialize_dependency_mechanism do
ActiveSupport::Dependencies.mechanism = config.cache_classes ? :require : :load
end
initializer :bootstrap_hook do |app|
ActiveSupport.run_load_hooks(:before_initialize, app)
end
end
end
end