rb simple example

gistfile1.txt

# bundle install
# LS_ACCESS_TOKEN=<token> bundle exec ruby main.rb
main.rb
---
Bundler.require
OpenTelemetry::SDK.configure do |c|
  c.service_name = 'ruby-test'
  c.add_span_processor(
    OpenTelemetry::SDK::Trace::Export::BatchSpanProcessor.new(
      exporter: OpenTelemetry::Exporter::OTLP::Exporter.new(
        # for devmode, change endpoint to 'localhost:8360/api/v2/otel/trace' and set insecure to true
        endpoint: 'ingest.lightstep.com:443/api/v2/otel/trace',
        insecure: false,
        headers: { 'lightstep-access-token' => ENV['LS_ACCESS_TOKEN'] }
      )
    )
  )
end
tracer = OpenTelemetry.tracer_provider.tracer('default')
loop do
  tracer.in_span('foo') do |span|
    # set an attribute
    span.set_attribute('platform', 'osx')
    # add an event
    span.add_event('event in bar')
    # create bar as child of foo
    tracer.in_span('bar') do |child_span|
      # inspect the span
      pp child_span
    end
  end
  sleep 5
end

gemfile
---
source 'https://rubygems.org'
gem 'opentelemetry-api', '0.12.1'
gem 'opentelemetry-sdk', '0.12.1'
gem 'opentelemetry-exporter-otlp', '0.12.1'