OpenTracingTestTracer

OpenTracing compatible in-memory Tracer implementation. It exposes information about the recorded spans which are useful for testing.

Installation

Add this line to your application's Gemfile:

gem 'signalfx_test_tracer'

Usage

require 'signalfx_test_tracer'
OpenTracing.global_tracer = OpenTracingTestTracer.build

OpenTracing.start_active_span('span name') do
  # do something

  OpenTracing.start_active_span('inner span name') do
    # do something else
  end
end

See opentracing-ruby for more examples.

In addition to OpenTracing compatible methods this tracer provides following methods:

OpenTracingTestTracer

1. #spans returns all spans, including those in progress.

OpenTracingTestTracer::Span

1. finished? informs whether the span is finished.
2. start_time returns when the span was started.
3. end_time returns when the span was finished, or nil if still in progress.
4. tags returns the span tags.
5. logs returns the span logs.

OpenTracingTestTracer::SpanContext

1. trace_id returns the trace ID.
2. span_id returns the current span ID.
3. parent_id returns the parent span ID.

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/salemove/test-ruby-opentracing

Credits

This gem is heavily inspired by @iaintshine test-tracer.

signalfx_test_tracer is maintained and funded by SaleMove, Inc.