Contents

# frozen_string_literal: true

module ElasticAPM
  # @api private
  class Middleware
    def initialize(app)
      @app = app
    end

    # rubocop:disable Metrics/MethodLength
    def call(env)
      begin
        transaction = ElasticAPM.transaction 'Rack', type_for(env),
          context: ElasticAPM.build_context(env)

        resp = @app.call env

        transaction.submit(resp[0], headers: resp[1]) if transaction
      rescue InternalError
        raise # Don't report ElasticAPM errors
      rescue ::Exception => e
        ElasticAPM.report(e, handled: false)
        transaction.submit(500) if transaction
        raise
      ensure
        transaction.release if transaction
      end

      resp
    end
    # rubocop:enable Metrics/MethodLength

    private

    def type_for(env)
      format(
        'request.%s'.freeze,
        env.fetch('REQUEST_METHOD'.freeze, 'unknown'.freeze)
      )
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
elastic-apm-0.2.0	lib/elastic_apm/middleware.rb