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Restclient::Instrumentation

This gem provides instrumentation for RestClient requests.

Supported versions:

  • MRI 2.0 and newer
  • rest-client 2.0.0 and newer

Installation

Add this line to your application's Gemfile:

gem 'restclient-instrumentation'

And then execute:

$ bundle

Or install it yourself as:

$ gem install restclient-instrumentation

Usage

To enable the instrumentation and patch RestClient:

require 'restclient/instrumentation'

RestClient::Instrumentation.instrument

instrument takes two parameters:

  • propagate: Enable propagating span contexts through request headers. A value must be provided for this keyword argument
  • tracer: (Optional) Set an OpenTracing tracer to use. Defaults to OpenTracing.global_tracer.

In the case of an error, the span will be finished and tagged with the error code and message. However, the exception will still be passed up to the caller, and the caller must handle it or at least wait as long as the exporter's flush interval to ensure that the span gets exported.

Development

After checking out the repo, run bin/setup to install dependencies. 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/signalfx/ruby-restclient-instrumentation.

License

The gem is available as open source under the terms of the Apache 2.0 License.

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