module Mmtrix::Agent::Instrumentation::MiddlewareTracing

Constants

TXN_STARTED_KEY

Public Instance Methods

_nr_has_middleware_tracing() click to toggle source
# File lib/mmtrix/agent/instrumentation/middleware_tracing.rb, line 31
def _nr_has_middleware_tracing
  true
end
build_transaction_options(env, first_middleware) click to toggle source
# File lib/mmtrix/agent/instrumentation/middleware_tracing.rb, line 35
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/mmtrix/agent/instrumentation/middleware_tracing.rb, line 58
def call(env)
  first_middleware = note_transaction_started(env)

  state = Mmtrix::Agent::TransactionState.tl_get

  begin
    Transaction.start(state, category, build_transaction_options(env, first_middleware))
    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
    Mmtrix::Agent.notice_error(e)
    raise e
  ensure
    Transaction.stop(state)
  end
end
capture_http_response_code(state, result) click to toggle source
# File lib/mmtrix/agent/instrumentation/middleware_tracing.rb, line 52
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/mmtrix/agent/instrumentation/middleware_tracing.rb, line 81
def events
  Mmtrix::Agent.instance.events
end
merge_first_middleware_options(opts, env) click to toggle source
# File lib/mmtrix/agent/instrumentation/middleware_tracing.rb, line 41
def merge_first_middleware_options(opts, env)
  opts.merge(
    :request          => ::Rack::Request.new(env),
    :apdex_start_time => QueueTime.parse_frontend_timestamp(env)
  )
end
note_transaction_started(env) click to toggle source
# File lib/mmtrix/agent/instrumentation/middleware_tracing.rb, line 48
def note_transaction_started(env)
  env[TXN_STARTED_KEY] = true unless env[TXN_STARTED_KEY]
end