module OneApm::Rack::MiddlewareTracing

Constants

OA_TXN_STARTED_KEY

Public Instance Methods

_oa_has_middleware_tracing() click to toggle source
# File lib/one_apm/rack/middleware_tracing.rb, line 28
def _oa_has_middleware_tracing
  true
end
build_transaction_options(env, first_middleware) click to toggle source
# File lib/one_apm/rack/middleware_tracing.rb, line 32
def build_transaction_options(env, first_middleware)
  opts = transaction_options
  opts = merge_first_middleware_options(opts, env) if first_middleware
  opts
end
call(env) click to toggle source
# File lib/one_apm/rack/middleware_tracing.rb, line 56
def call(env)
  first_middleware = note_transaction_started(env)

  state = OneApm::TransactionState.tl_get
  begin
    options = build_transaction_options(env, first_middleware)

    current_transaction = OneApm::Transaction.start(state, category, options)

    current_transaction.ignore_frames << options[:transaction_name] if respond_to?(:middleware_ignore?) && middleware_ignore?

    events.notify(:before_call, env) if first_middleware
    result = (target == self) ? traced_call(env) : target.call(env)

    capture_http_response_code(state, result)
    events.notify(:after_call, env, result) if first_middleware

    result
  rescue Exception => e
    OneApm::Manager.notice_error(e)
    raise e
  ensure
    OneApm::Transaction.stop(state)
  end
end
capture_http_response_code(state, result) click to toggle source
# File lib/one_apm/rack/middleware_tracing.rb, line 50
def capture_http_response_code(state, result)
  if result.is_a?(Array) && state.current_transaction
    state.current_transaction.http_response_code = result[0]
  end
end
events() click to toggle source
# File lib/one_apm/rack/middleware_tracing.rb, line 82
def events
  OneApm::Manager.agent.events
end
merge_first_middleware_options(opts, env) click to toggle source
# File lib/one_apm/rack/middleware_tracing.rb, line 38
def merge_first_middleware_options(opts, env)
  opts.merge(
    :request          => ::Rack::Request.new(env),
    :apdex_start_time => OneApm::Agent::Instrumentation::QueueTime.parse_frontend_timestamp(env)
  )
end
note_transaction_started(env) click to toggle source
# File lib/one_apm/rack/middleware_tracing.rb, line 45
def note_transaction_started(env)
  env[OA_TXN_STARTED_KEY] = true unless env[OA_TXN_STARTED_KEY]
end