module NewRelic::Agent::Instrumentation::MiddlewareTracing
Constants
- CONTENT_LENGTH
- CONTENT_TYPE
- TXN_STARTED_KEY
Public Instance Methods
_nr_has_middleware_tracing()
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# File lib/new_relic/agent/instrumentation/middleware_tracing.rb, line 33 def _nr_has_middleware_tracing true end
build_transaction_options(env, first_middleware)
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# File lib/new_relic/agent/instrumentation/middleware_tracing.rb, line 37 def build_transaction_options(env, first_middleware) opts = transaction_options opts = merge_first_middleware_options(opts, env) if first_middleware opts end
call(env)
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# File lib/new_relic/agent/instrumentation/middleware_tracing.rb, line 83 def call(env) first_middleware = note_transaction_started(env) state = NewRelic::Agent::Tracer.state begin options = build_transaction_options(env, first_middleware) finishable = Tracer.start_transaction_or_segment( name: options[:transaction_name], category: category, options: options ) events.notify(:before_call, env) if first_middleware result = target == self ? traced_call(env) : target.call(env) if first_middleware capture_response_attributes(state, result) events.notify(:after_call, env, result) end result rescue Exception => e NewRelic::Agent.notice_error(e) raise e ensure finishable&.finish end end
capture_http_response_code(state, result)
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# File lib/new_relic/agent/instrumentation/middleware_tracing.rb, line 55 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
capture_response_attributes(state, result)
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# File lib/new_relic/agent/instrumentation/middleware_tracing.rb, line 77 def capture_response_attributes(state, result) capture_http_response_code(state, result) capture_response_content_type(state, result) capture_response_content_length(state, result) end
capture_response_content_length(state, result)
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# File lib/new_relic/agent/instrumentation/middleware_tracing.rb, line 68 def capture_response_content_length(state, result) if result.is_a?(Array) && state.current_transaction _, headers, _ = result length = headers[CONTENT_LENGTH] length = length.reduce(0) { |sum, h| sum + h.to_i } if length.is_a?(Array) state.current_transaction.response_content_length = length end end
capture_response_content_type(state, result)
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# File lib/new_relic/agent/instrumentation/middleware_tracing.rb, line 61 def capture_response_content_type(state, result) if result.is_a?(Array) && state.current_transaction _, headers, _ = result state.current_transaction.response_content_type = headers[CONTENT_TYPE] end end
events()
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# File lib/new_relic/agent/instrumentation/middleware_tracing.rb, line 115 def events NewRelic::Agent.instance.events end
merge_first_middleware_options(opts, env)
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# File lib/new_relic/agent/instrumentation/middleware_tracing.rb, line 43 def merge_first_middleware_options(opts, env) opts[:apdex_start_time] = QueueTime.parse_frontend_timestamp(env) # this case is for the rare occasion that an app is using Puma::Rack # without having ::Rack as a dependency opts[:request] = ::Rack::Request.new(env.dup) if defined? ::Rack opts end
note_transaction_started(env)
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# File lib/new_relic/agent/instrumentation/middleware_tracing.rb, line 51 def note_transaction_started(env) env[TXN_STARTED_KEY] = true unless env[TXN_STARTED_KEY] end