sentry-havy-serialize-reproduce

config.ru

# frozen_string_literal: true

begin
  require "bundler/inline"
rescue LoadError => e
  $stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
  raise e
end

gemfile(true) do
  source "https://rubygems.org"
  # Activate the gem you are reporting the issue against.
  gem 'rack', '1.6.13'
  gem 'sentry-raven', '3.0.0', require: 'sentry-raven-without-integrations'
  gem 'grape', '1.2.4'
end

require 'raven'
require 'raven/transports/dummy'

Raven.configure do |config|
  config.dsn = "dummy://12345:67890@sentry.localdomain/sentry/42"
end

class HavySerializeObject
  def to_s
    sleep 5
    "boom"
  end
end

class TestApp < Grape::API
  rescue_from :all do |e|
    env['somelarge.object'] = HavySerializeObject.new
    Raven::Rack.capture_exception(e, env)

    Rack::Response.new({ error: 'An error ocurred' }.to_json, 500, { "Content-type" => "application/json" })
  end

  get :hello do
    { hello: 'world' }
  end

  get :exception do
    raise "boom"
  end

  format :json
end

module RackApplication
  class << self
    def to_app
      @rack_application ||= build
    end

    private

    def build
      builder = Rack::Builder.new
      builder.use Raven::Rack
      builder.run TestApp.new
      builder
    end
  end
end

run RackApplication.to_app

Makefile

start:
	rackup config.ru -p 9292

test:
	time curl 'http://localhost:9292/exception'