otel_shutdown_test.rb

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'opentelemetry-exporter-otlp', :path => '../opentelemetry-ruby/exporter'
  gem 'opentelemetry-exporter-otlp-metrics', :path => '../opentelemetry-ruby/exporter'
  gem 'opentelemetry-metrics-sdk', :path => '../opentelemetry-ruby/'
  gem 'opentelemetry-sdk', :path => '../opentelemetry-ruby/'
end

require 'opentelemetry-sdk'
require 'opentelemetry-metrics-sdk'
require 'benchmark'

OpenTelemetry::SDK.configure

exporter = OpenTelemetry::SDK::Metrics::Export::ConsoleMetricPullExporter.new
metric_reader = OpenTelemetry::SDK::Metrics::Export::PeriodicMetricReader.new(
  export_interval_millis: 2000,
  exporter: exporter
)
OpenTelemetry.meter_provider.add_metric_reader(metric_reader)

meter = OpenTelemetry.meter_provider.meter('my_meter')
counter = meter.create_counter('my_counter')
counter.add(1)

puts "Shutting down..."
time_taken = Benchmark.realtime do
  metric_reader.shutdown
end

puts "Shutdown completed in #{time_taken.round(3)} seconds."