On Rails 5 (and Rails 3 and 4), add this to the top of config/application.rb:
require 'trashed/railtie'
And in the body of your app config:
module YourApp
class Application < Rails::Application
config.trashed.statsd = YourApp.statsd
On Rails 2, add the middleware to config/environment.rb:
Rails::Initializer.run do |config|
reporter = Trashed::Reporter.new
reporter.logger = Rails.logger
reporter.statsd = YourApp.statsd
config.middleware.use Trashed::Rack, reporter
end
You probably want stats per controller, action, right?
Set a #timing_dimensions lambda to return a list of dimensions to qualify per-request measurements like time elapsed, GC time, objects allocated, etc.
For example:
config.trashed.timing_dimensions = ->(env) do
# Rails 3, 4, and 5, set this. Other Rack endpoints won't have it.
if controller = env['action_controller.instance']
name = controller.controller_name
action = controller.action_name
format = controller.rendered_format || :none
variant = controller.request.variant || :none # Rails 4.1+ only!
[ :All,
:"Controllers.#{name}",
:"Actions.#{name}.#{action}.#{format}+#{variant}" ]
end
end
Results in metrics like:
YourNamespace.All.Time.wall
YourNamespace.Controllers.SessionsController.Time.wall
YourNamespace.Actions.SessionsController.index.json+phone.Time.wall
Similarly, set a #gauge_dimensions lambda to return a list of dimensions to qualify measurements which gauge current state, like heap slots used or total number of live String objects.
For example:
config.trashed.gauge_dimensions = ->(env) {
[ :All,
:"Stage.#{Rails.env}",
:"Hosts.#{`hostname -s`.chomp}" ]
}
Results in metrics like:
YourNamespace.All.Objects.T_STRING
YourNamespace.Stage.production.Objects.T_STRING
YourNamespace.Hosts.host-001.Objects.T_STRING
3.2.8 (January 31, 2022)
3.2.7 (November 8, 2017)
3.2.6 (June 21, 2017)
3.2.5 (Feb 26, 2015)
3.2.4 (July 25, 2014)
3.2.3 (June 23, 2014)
3.2.2 (March 31, 2014)
3.1.0 (March 30, 2014)
3.0.1 (March 30, 2014)
3.0.0 (March 29, 2014)
2.0.5 (December 15, 2012)
2.0.0 (December 1, 2011)
1.0.0 (August 24, 2009)
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