mirror of https://github.com/rails/rails
Merge pull request #6348 from LTe/no_global_depreactations
Allow ActiveSupport::Deprecation features to be used by rails applications and library authors
This commit is contained in:
Carlos Antonio da Silva
commit
01ef633f75
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@ -1,5 +1,37 @@
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## Rails 4.0.0 (unreleased) ##
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* ActiveSupport::Deprecation is now a class. It is possible to create an instance
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of deprecator. Backwards compatibility has been preserved.
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You can choose which instance of the deprecator will be used.
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deprecate :method_name, :deprecator => deprecator_instance
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You can use ActiveSupport::Deprecation in your gem.
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require 'active_support/deprecation'
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require 'active_support/core_ext/module/deprecation'
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class MyGem
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def old_method
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end
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deprecate :old_method => :new_method, :deprecator => deprecator
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def new_method
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end
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def self.deprecator
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ActiveSupport::Deprecation.new('2.0', 'MyGem')
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end
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end
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MyGem.new.old_method
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DEPRECATION WARNING: old_method is deprecated and will be removed from MyGem 2.0
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(use new_method instead). (called from <main> at file.rb:18)
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*Piotr Niełacny & Robert Pankowecki*
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* `ERB::Util.html_escape` encodes single quote as `#39`. Decimal form has better support in old browsers. *Kalys Osmonov*
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* `ActiveSupport::Callbacks`: deprecate monkey patch of object callbacks.
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@ -1,10 +1,42 @@
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require 'active_support/deprecation/method_wrappers'
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class Module
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# Declare that a method has been deprecated.
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# deprecate :foo
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# deprecate :bar => 'message'
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# deprecate :foo, :bar, :baz => 'warning!', :qux => 'gone!'
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#
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# You can use custom deprecator instance
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# deprecate :foo, :deprecator => MyLib::Deprecator.new
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# deprecate :foo, :bar => "warning!", :deprecator => MyLib::Deprecator.new
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#
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# \Custom deprecators must respond to one method
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# [deprecation_warning(deprecated_method_name, message, caller_backtrace)] will be called with the deprecated
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# method name, the message it was declared
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# with and caller_backtrace. Implement
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# whatever warning behavior you like here.
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#
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# Example
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# class MyLib::Deprecator
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#
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# def deprecation_warning(deprecated_method_name, message, caller_backtrace)
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# message = "#{method_name} is deprecated and will be removed from MyLibrary | #{message}"
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# Kernel.warn message
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# end
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#
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# end
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#
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# module MyLib
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# mattr_accessor :deprecator
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# self.deprecator = Deprecator.new
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# end
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#
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# When we deprecate method
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# class MyLib::Bar
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# deprecate :foo => "this is very old method", :deprecator => MyLib.deprecator
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# end
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#
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# It will build deprecation message and invoke deprecator warning by calling
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# MyLib.deprecator.deprecation_warning(:foo, "this is a very old method", caller)
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def deprecate(*method_names)
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ActiveSupport::Deprecation.deprecate_methods(self, *method_names)
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end
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@ -1,19 +1,40 @@
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require 'active_support/core_ext/module/deprecation'
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require 'active_support/deprecation/instance_delegator'
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require 'active_support/deprecation/behaviors'
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require 'active_support/deprecation/reporting'
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require 'active_support/deprecation/method_wrappers'
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require 'active_support/deprecation/proxy_wrappers'
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require 'singleton'
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module ActiveSupport
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module Deprecation
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class << self
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# The version the deprecated behavior will be removed, by default.
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attr_accessor :deprecation_horizon
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end
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self.deprecation_horizon = '4.1'
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# \Deprecation specifies the API used by Rails to deprecate
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# methods, instance variables, objects and constants.
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# The API depends on four methods:
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#
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# * +initialize+ which expects two parameters
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# described below;
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class Deprecation
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include Singleton
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include InstanceDelegator
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include Behavior
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include Reporting
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include MethodWrapper
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# By default, warnings are not silenced and debugging is off.
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self.silenced = false
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self.debug = false
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# The version the deprecated behavior will be removed, by default.
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attr_accessor :deprecation_horizon
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# It accepts two parameters on initialization. The first is an version of library
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# and the second is an library name
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#
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# == Example
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#
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# ActiveSupport::Deprecation.new('2.0', 'MyLibrary')
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def initialize(deprecation_horizon = '4.1', gem_name = 'Rails')
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self.gem_name = gem_name
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self.deprecation_horizon = deprecation_horizon
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# By default, warnings are not silenced and debugging is off.
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self.silenced = false
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self.debug = false
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end
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end
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end
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end
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@ -1,8 +1,32 @@
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require "active_support/notifications"
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module ActiveSupport
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module Deprecation
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class << self
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class Deprecation
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# Default warning behaviors per Rails.env.
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DEFAULT_BEHAVIORS = {
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:stderr => Proc.new { |message, callstack|
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$stderr.puts(message)
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$stderr.puts callstack.join("\n ") if debug
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},
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:log => Proc.new { |message, callstack|
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logger =
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if defined?(Rails) && Rails.logger
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Rails.logger
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else
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require 'active_support/logger'
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ActiveSupport::Logger.new($stderr)
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end
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logger.warn message
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logger.debug callstack.join("\n ") if debug
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},
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:notify => Proc.new { |message, callstack|
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ActiveSupport::Notifications.instrument("deprecation.rails",
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:message => message, :callstack => callstack)
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},
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:silence => Proc.new { |message, callstack| }
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}
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module Behavior
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# Whether to print a backtrace along with the warning.
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attr_accessor :debug
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@ -16,9 +40,9 @@ module ActiveSupport
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#
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# Available behaviors:
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#
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# [+stderr+] Log all deprecation warnings to <tt>$stderr</tt>.
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# [+stderr+] Log all deprecation warnings to +$stderr+.
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# [+log+] Log all deprecation warnings to +Rails.logger+.
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# [+notify+] Use <tt>ActiveSupport::Notifications</tt> to notify +deprecation.rails+.
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# [+notify+] Use +ActiveSupport::Notifications+ to notify +deprecation.rails+.
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# [+silence+] Do nothing.
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#
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# Setting behaviors only affects deprecations that happen after boot time.
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@ -28,36 +52,12 @@ module ActiveSupport
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# ActiveSupport::Deprecation.behavior = :stderr
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# ActiveSupport::Deprecation.behavior = [:stderr, :log]
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# ActiveSupport::Deprecation.behavior = MyCustomHandler
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# ActiveSupport::Deprecation.behavior = proc { |message, callstack|
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# ActiveSupport::Deprecation.behavior = proc { |message, callstack|
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# # custom stuff
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# }
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def behavior=(behavior)
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@behavior = Array(behavior).map { |b| DEFAULT_BEHAVIORS[b] || b }
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end
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end
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# Default warning behaviors per Rails.env.
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DEFAULT_BEHAVIORS = {
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:stderr => Proc.new { |message, callstack|
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$stderr.puts(message)
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$stderr.puts callstack.join("\n ") if debug
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},
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:log => Proc.new { |message, callstack|
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logger =
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if defined?(Rails) && Rails.logger
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Rails.logger
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else
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require 'active_support/logger'
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ActiveSupport::Logger.new($stderr)
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end
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logger.warn message
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logger.debug callstack.join("\n ") if debug
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},
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:notify => Proc.new { |message, callstack|
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ActiveSupport::Notifications.instrument("deprecation.rails",
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:message => message, :callstack => callstack)
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},
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:silence => Proc.new { |message, callstack| }
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}
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end
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end
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@ -0,0 +1,24 @@
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require 'active_support/core_ext/kernel/singleton_class'
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require 'active_support/core_ext/module/delegation'
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module ActiveSupport
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class Deprecation
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module InstanceDelegator
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def self.included(base)
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base.extend(ClassMethods)
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base.public_class_method :new
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end
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module ClassMethods
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def include(included_module)
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included_module.instance_methods.each { |m| method_added(m) }
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super
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end
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def method_added(method_name)
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singleton_class.delegate(method_name, to: :instance)
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end
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end
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end
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end
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end
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@ -2,45 +2,41 @@ require 'active_support/core_ext/module/aliasing'
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require 'active_support/core_ext/array/extract_options'
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module ActiveSupport
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module Deprecation
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# Declare that a method has been deprecated.
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#
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# module Fred
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# extend self
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#
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# def foo; end
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# def bar; end
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# def baz; end
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# end
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#
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# ActiveSupport::Deprecation.deprecate_methods(Fred, :foo, bar: :qux, baz: 'use Bar#baz instead')
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# # => [:foo, :bar, :baz]
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#
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# Fred.foo
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# # => "DEPRECATION WARNING: foo is deprecated and will be removed from Rails 4.1."
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#
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# Fred.bar
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# # => "DEPRECATION WARNING: bar is deprecated and will be removed from Rails 4.1 (use qux instead)."
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#
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# Fred.baz
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# # => "DEPRECATION WARNING: baz is deprecated and will be removed from Rails 4.1 (use Bar#baz instead)."
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def self.deprecate_methods(target_module, *method_names)
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options = method_names.extract_options!
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method_names += options.keys
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class Deprecation
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module MethodWrapper
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# Declare that a method has been deprecated.
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#
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# module Fred
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# extend self
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#
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# def foo; end
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# def bar; end
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# def baz; end
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# end
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#
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# ActiveSupport::Deprecation.deprecate_methods(Fred, :foo, bar: :qux, baz: 'use Bar#baz instead')
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# # => [:foo, :bar, :baz]
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#
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# Fred.foo
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# # => "DEPRECATION WARNING: foo is deprecated and will be removed from Rails 4.1."
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#
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# Fred.bar
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# # => "DEPRECATION WARNING: bar is deprecated and will be removed from Rails 4.1 (use qux instead)."
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#
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# Fred.baz
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# # => "DEPRECATION WARNING: baz is deprecated and will be removed from Rails 4.1 (use Bar#baz instead)."
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def deprecate_methods(target_module, *method_names)
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options = method_names.extract_options!
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deprecator = options.delete(:deprecator) || ActiveSupport::Deprecation.instance
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method_names += options.keys
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method_names.each do |method_name|
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target_module.alias_method_chain(method_name, :deprecation) do |target, punctuation|
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target_module.module_eval(<<-end_eval, __FILE__, __LINE__ + 1)
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def #{target}_with_deprecation#{punctuation}(*args, &block)
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::ActiveSupport::Deprecation.warn(
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::ActiveSupport::Deprecation.deprecated_method_warning(
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:#{method_name},
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#{options[method_name].inspect}),
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caller
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)
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send(:#{target}_without_deprecation#{punctuation}, *args, &block)
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method_names.each do |method_name|
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target_module.alias_method_chain(method_name, :deprecation) do |target, punctuation|
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target_module.send(:define_method, "#{target}_with_deprecation#{punctuation}") do |*args, &block|
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deprecator.deprecation_warning(method_name, options[method_name], caller)
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send(:"#{target}_without_deprecation#{punctuation}", *args, &block)
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end
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end_eval
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end
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end
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end
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end
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@ -1,7 +1,7 @@
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require 'active_support/inflector/methods'
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module ActiveSupport
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module Deprecation
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class Deprecation
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class DeprecationProxy #:nodoc:
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def self.new(*args, &block)
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object = args.first
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@ -25,10 +25,21 @@ module ActiveSupport
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end
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end
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class DeprecatedObjectProxy < DeprecationProxy #:nodoc:
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def initialize(object, message)
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# This DeprecatedObjectProxy transforms object to depracated object.
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#
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# Example
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# @old_object = DeprecatedObjectProxy.new(Object.new, "Don't use this object anymore!")
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# Example with custom deprecator
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# @old_object = DeprecatedObjectProxy.new(Object.new, "Don't use this object anymore!", deprecator_instance)
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#
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# When someone execute any method expect +inspect+ on proxy object this will trigger +warn+ method on +deprecator_instance+
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#
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# Default deprecator is ActiveSupport::Deprecation
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class DeprecatedObjectProxy < DeprecationProxy
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def initialize(object, message, deprecator = ActiveSupport::Deprecation.instance)
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@object = object
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@message = message
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@deprecator = deprecator
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end
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private
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@ -37,15 +48,38 @@ module ActiveSupport
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end
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def warn(callstack, called, args)
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ActiveSupport::Deprecation.warn(@message, callstack)
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@deprecator.warn(@message, callstack)
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end
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end
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# Stand-in for <tt>@request</tt>, <tt>@attributes</tt>, <tt>@params</tt>, etc.
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# which emits deprecation warnings on any method call (except +inspect+).
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class DeprecatedInstanceVariableProxy < DeprecationProxy #:nodoc:
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def initialize(instance, method, var = "@#{method}")
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@instance, @method, @var = instance, method, var
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# This DeprecatedInstanceVariableProxy transforms instance variable to depracated instance variable.
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#
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# Example
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# class Example
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# def initialize(deprecator)
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# @request = ActiveSupport::Deprecation::DeprecatedInstanceVariableProxy.new(self, :request, :@request, deprecator)
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# @_request = :a_request
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# end
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#
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# def request
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# @_request
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# end
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#
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# def old_request
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# @request
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# end
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# end
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#
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# When someone execute any method on @request variable this will trigger +warn+ method on +deprecator_instance+
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# and will fetch @_request variable via +request+ method and execute the same method on non-proxy instance variable.
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#
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# Default deprecator is ActiveSupport::Deprecation
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class DeprecatedInstanceVariableProxy < DeprecationProxy
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def initialize(instance, method, var = "@#{method}", deprecator = ActiveSupport::Deprecation.instance)
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@instance = instance
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||||
@method = method
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||||
@var = var
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@deprecator = deprecator
|
||||
end
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||||
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||||
private
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@ -54,14 +88,24 @@ module ActiveSupport
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|||
end
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||||
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||||
def warn(callstack, called, args)
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ActiveSupport::Deprecation.warn("#{@var} is deprecated! Call #{@method}.#{called} instead of #{@var}.#{called}. Args: #{args.inspect}", callstack)
|
||||
@deprecator.warn("#{@var} is deprecated! Call #{@method}.#{called} instead of #{@var}.#{called}. Args: #{args.inspect}", callstack)
|
||||
end
|
||||
end
|
||||
|
||||
class DeprecatedConstantProxy < DeprecationProxy #:nodoc:all
|
||||
def initialize(old_const, new_const)
|
||||
# This DeprecatedConstantProxy transforms constant to depracated constant.
|
||||
#
|
||||
# Example
|
||||
# OLD_CONST = ActiveSupport::Deprecation::DeprecatedConstantProxy.new('OLD_CONST', 'NEW_CONST')
|
||||
# Example with custom deprecator
|
||||
# OLD_CONST = ActiveSupport::Deprecation::DeprecatedConstantProxy.new('OLD_CONST', 'NEW_CONST', deprecator_instance)
|
||||
# When someone use old constant this will trigger +warn+ method on +deprecator_instance+
|
||||
#
|
||||
# Default deprecator is ActiveSupport::Deprecation
|
||||
class DeprecatedConstantProxy < DeprecationProxy
|
||||
def initialize(old_const, new_const, deprecator = ActiveSupport::Deprecation.instance)
|
||||
@old_const = old_const
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||||
@new_const = new_const
|
||||
@deprecator = deprecator
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||||
end
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||||
|
||||
def class
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|
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@ -74,7 +118,7 @@ module ActiveSupport
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|||
end
|
||||
|
||||
def warn(callstack, called, args)
|
||||
ActiveSupport::Deprecation.warn("#{@old_const} is deprecated! Use #{@new_const} instead.", callstack)
|
||||
@deprecator.warn("#{@old_const} is deprecated! Use #{@new_const} instead.", callstack)
|
||||
end
|
||||
end
|
||||
end
|
||||
|
|
|
|||
|
|
@ -1,7 +1,10 @@
|
|||
module ActiveSupport
|
||||
module Deprecation
|
||||
class << self
|
||||
class Deprecation
|
||||
module Reporting
|
||||
# Whether to print a message (silent mode)
|
||||
attr_accessor :silenced
|
||||
# Name of gem where method is deprecated
|
||||
attr_accessor :gem_name
|
||||
|
||||
# Outputs a deprecation warning to the output configured by
|
||||
# <tt>ActiveSupport::Deprecation.behavior</tt>.
|
||||
|
|
@ -31,16 +34,29 @@ module ActiveSupport
|
|||
@silenced = old_silenced
|
||||
end
|
||||
|
||||
def deprecated_method_warning(method_name, message = nil)
|
||||
warning = "#{method_name} is deprecated and will be removed from Rails #{deprecation_horizon}"
|
||||
case message
|
||||
when Symbol then "#{warning} (use #{message} instead)"
|
||||
when String then "#{warning} (#{message})"
|
||||
else warning
|
||||
def deprecation_warning(deprecated_method_name, message = nil, caller_backtrace = caller)
|
||||
deprecated_method_warning(deprecated_method_name, message).tap do |message|
|
||||
warn(message, caller_backtrace)
|
||||
end
|
||||
end
|
||||
|
||||
private
|
||||
# Outputs a deprecation warning message
|
||||
# ActiveSupport::Deprecation.deprecated_method_warning(:method_name)
|
||||
# # => "method_name is deprecated and will be removed from Rails #{deprecation_horizon}"
|
||||
# ActiveSupport::Deprecation.deprecated_method_warning(:method_name, :another_method)
|
||||
# # => "method_name is deprecated and will be removed from Rails #{deprecation_horizon} (use another_method instead)"
|
||||
# ActiveSupport::Deprecation.deprecated_method_warning(:method_name, "Optional message")
|
||||
# # => "method_name is deprecated and will be removed from Rails #{deprecation_horizon} (Optional message)"
|
||||
def deprecated_method_warning(method_name, message = nil)
|
||||
warning = "#{method_name} is deprecated and will be removed from #{gem_name} #{deprecation_horizon}"
|
||||
case message
|
||||
when Symbol then "#{warning} (use #{message} instead)"
|
||||
when String then "#{warning} (#{message})"
|
||||
else warning
|
||||
end
|
||||
end
|
||||
|
||||
def deprecation_message(callstack, message = nil)
|
||||
message ||= "You are using deprecated behavior which will be removed from the next major or minor release."
|
||||
message += '.' unless message =~ /\.$/
|
||||
|
|
|
|||
|
|
@ -104,6 +104,17 @@ class DeprecationTest < ActiveSupport::TestCase
|
|||
assert_match(/call stack!/, content)
|
||||
end
|
||||
|
||||
def test_default_stderr_behavior_with_warn_method
|
||||
ActiveSupport::Deprecation.behavior = :stderr
|
||||
|
||||
content = capture(:stderr) {
|
||||
ActiveSupport::Deprecation.warn('Instance error!', ['instance call stack!'])
|
||||
}
|
||||
|
||||
assert_match(/Instance error!/, content)
|
||||
assert_match(/instance call stack!/, content)
|
||||
end
|
||||
|
||||
def test_default_silence_behavior
|
||||
ActiveSupport::Deprecation.behavior = :silence
|
||||
behavior = ActiveSupport::Deprecation.behavior.first
|
||||
|
|
@ -186,4 +197,142 @@ class DeprecationTest < ActiveSupport::TestCase
|
|||
def test_deprecation_with_explicit_message
|
||||
assert_deprecated(/you now need to do something extra for this one/) { @dtc.d }
|
||||
end
|
||||
|
||||
def test_deprecation_in_other_object
|
||||
messages = []
|
||||
|
||||
klass = Class.new do
|
||||
delegate :warn, :behavior=, to: ActiveSupport::Deprecation
|
||||
end
|
||||
|
||||
o = klass.new
|
||||
o.behavior = Proc.new { |message, callstack| messages << message }
|
||||
assert_difference("messages.size") do
|
||||
o.warn("warning")
|
||||
end
|
||||
end
|
||||
|
||||
def test_deprecated_method_with_custom_method_warning
|
||||
deprecator = deprecator_with_messages
|
||||
|
||||
class << deprecator
|
||||
private
|
||||
def deprecated_method_warning(method, message)
|
||||
"deprecator.deprecated_method_warning.#{method}"
|
||||
end
|
||||
end
|
||||
|
||||
deprecatee = Class.new do
|
||||
def method
|
||||
end
|
||||
deprecate :method, deprecator: deprecator
|
||||
end
|
||||
|
||||
deprecatee.new.method
|
||||
assert deprecator.messages.first.match("DEPRECATION WARNING: deprecator.deprecated_method_warning.method")
|
||||
end
|
||||
|
||||
def test_deprecate_with_custom_deprecator
|
||||
custom_deprecator = mock('Deprecator') do
|
||||
expects(:deprecation_warning)
|
||||
end
|
||||
|
||||
klass = Class.new do
|
||||
def method
|
||||
end
|
||||
deprecate :method, deprecator: custom_deprecator
|
||||
end
|
||||
|
||||
klass.new.method
|
||||
end
|
||||
|
||||
def test_deprecated_constant_with_deprecator_given
|
||||
deprecator = deprecator_with_messages
|
||||
klass = Class.new
|
||||
klass.const_set(:OLD, ActiveSupport::Deprecation::DeprecatedConstantProxy.new('klass::OLD', 'Object', deprecator) )
|
||||
assert_difference("deprecator.messages.size") do
|
||||
klass::OLD.to_s
|
||||
end
|
||||
end
|
||||
|
||||
def test_deprecated_instance_variable_with_instance_deprecator
|
||||
deprecator = deprecator_with_messages
|
||||
|
||||
klass = Class.new() do
|
||||
def initialize(deprecator)
|
||||
@request = ActiveSupport::Deprecation::DeprecatedInstanceVariableProxy.new(self, :request, :@request, deprecator)
|
||||
@_request = :a_request
|
||||
end
|
||||
def request; @_request end
|
||||
def old_request; @request end
|
||||
end
|
||||
|
||||
assert_difference("deprecator.messages.size") { klass.new(deprecator).old_request.to_s }
|
||||
end
|
||||
|
||||
def test_deprecated_instance_variable_with_given_deprecator
|
||||
deprecator = deprecator_with_messages
|
||||
|
||||
klass = Class.new do
|
||||
define_method(:initialize) do
|
||||
@request = ActiveSupport::Deprecation::DeprecatedInstanceVariableProxy.new(self, :request, :@request, deprecator)
|
||||
@_request = :a_request
|
||||
end
|
||||
def request; @_request end
|
||||
def old_request; @request end
|
||||
end
|
||||
|
||||
assert_difference("deprecator.messages.size") { klass.new.old_request.to_s }
|
||||
end
|
||||
|
||||
def test_delegate_deprecator_instance
|
||||
klass = Class.new do
|
||||
attr_reader :last_message
|
||||
delegate :warn, :behavior=, to: ActiveSupport::Deprecation
|
||||
|
||||
def initialize
|
||||
self.behavior = [Proc.new { |message| @last_message = message }]
|
||||
end
|
||||
|
||||
def deprecated_method
|
||||
warn(deprecated_method_warning(:deprecated_method, "You are calling deprecated method"))
|
||||
end
|
||||
|
||||
private
|
||||
def deprecated_method_warning(method_name, message = nil)
|
||||
message || "#{method_name} is deprecated and will be removed from This Library"
|
||||
end
|
||||
end
|
||||
|
||||
object = klass.new
|
||||
object.deprecated_method
|
||||
assert_match(/You are calling deprecated method/, object.last_message)
|
||||
end
|
||||
|
||||
def test_default_gem_name
|
||||
deprecator = ActiveSupport::Deprecation.new
|
||||
|
||||
deprecator.send(:deprecated_method_warning, :deprecated_method, "You are calling deprecated method").tap do |message|
|
||||
assert_match(/is deprecated and will be removed from Rails/, message)
|
||||
end
|
||||
end
|
||||
|
||||
def test_custom_gem_name
|
||||
deprecator = ActiveSupport::Deprecation.new('2.0', 'Custom')
|
||||
|
||||
deprecator.send(:deprecated_method_warning, :deprecated_method, "You are calling deprecated method").tap do |message|
|
||||
assert_match(/is deprecated and will be removed from Custom/, message)
|
||||
end
|
||||
end
|
||||
|
||||
private
|
||||
def deprecator_with_messages
|
||||
klass = Class.new(ActiveSupport::Deprecation)
|
||||
deprecator = klass.new
|
||||
deprecator.behavior = Proc.new{|message, callstack| deprecator.messages << message}
|
||||
def deprecator.messages
|
||||
@messages ||= []
|
||||
end
|
||||
deprecator
|
||||
end
|
||||
end
|
||||
|
|
|
|||
Loading…
Reference in New Issue