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-rw-r--r--activesupport/lib/active_support/notifications.rb2
-rw-r--r--activesupport/lib/active_support/notifications/instrumenter.rb10
-rw-r--r--activesupport/test/notifications_test.rb12
3 files changed, 21 insertions, 3 deletions
diff --git a/activesupport/lib/active_support/notifications.rb b/activesupport/lib/active_support/notifications.rb
index 3e96decb8c..a1383bb478 100644
--- a/activesupport/lib/active_support/notifications.rb
+++ b/activesupport/lib/active_support/notifications.rb
@@ -45,7 +45,7 @@ module ActiveSupport
class << self
attr_writer :notifier
delegate :publish, :subscribe, :to => :notifier
- delegate :instrument, :to => :instrumenter
+ delegate :instrument, :instrument!, :to => :instrumenter
def notifier
@notifier ||= Notifier.new
diff --git a/activesupport/lib/active_support/notifications/instrumenter.rb b/activesupport/lib/active_support/notifications/instrumenter.rb
index af35eb92cb..85c5199946 100644
--- a/activesupport/lib/active_support/notifications/instrumenter.rb
+++ b/activesupport/lib/active_support/notifications/instrumenter.rb
@@ -11,13 +11,21 @@ module ActiveSupport
@notifier = notifier
end
- def instrument(name, payload={})
+ # Instrument the given block by measuring the time taken to execute it
+ # and publish it.
+ def instrument(name, payload={}, add_result=false)
time = Time.now
result = yield if block_given?
+ payload.merge!(:result => result) if add_result
@notifier.publish(name, time, Time.now, @id, payload)
result
end
+ # The same as instrument, but adds the result as payload.
+ def instrument!(name, payload={}, &block)
+ instrument(name, payload, true, &block)
+ end
+
private
def unique_id
SecureRandom.hex(10)
diff --git a/activesupport/test/notifications_test.rb b/activesupport/test/notifications_test.rb
index 226e12ff75..3690d723fa 100644
--- a/activesupport/test/notifications_test.rb
+++ b/activesupport/test/notifications_test.rb
@@ -83,10 +83,20 @@ module Notifications
end
class InstrumentationTest < TestCase
- delegate :instrument, :to => ActiveSupport::Notifications
+ delegate :instrument, :instrument!, :to => ActiveSupport::Notifications
def test_instrument_returns_block_result
assert_equal 2, instrument(:awesome) { 1 + 1 }
+ drain
+ end
+
+ def test_instrument_with_band_adds_result_to_payload
+ assert_equal 2, instrument!(:awesome) { 1 + 1 }
+ drain
+
+ assert_equal 1, @events.size
+ assert_equal :awesome, @events.first.name
+ assert_equal Hash[:result => 2], @events.first.payload
end
def test_instrumenter_exposes_its_id