rack-instrumentation
Open Tracing instrumentation for rack. By default it starts a new span for every request and follows the open tracing tagging semantic conventions. This is inspired by the rack-tracer gem, and sections of the code here are taken from there.
Installation
Add this line to your application's Gemfile:
gem "rack-instrumentation"
And then execute:
$ bundle
Or install it yourself as:
$ gem install rack-instrumentation
Usage
Require the gem (Note: this won't automatically instrument rack)
require "rack/instrumentation"
If you have set up OpenTracing.global_tracer
you can turn on spans for all requests in your config.ru
thusly:
use Rack::OpenTracing::Tracer
Similarly, this works for rails applications:
Rails.application.configure do
config.middleware.use Rack::Instrumentation::Tracer
end
Development
After checking out the repo, run bin/setup
to install dependencies. Then, run rake spec
to run the tests. You can also run bin/console
for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install
. To release a new version, update the version number in version.rb
, and then run bundle exec rake release
, which will create a git tag for the version, push git commits and tags, and push the .gem
file to rubygems.org.
Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/rack-instrumentation-ruby.
License
The gem is available as open source under the terms of the MIT License.