elastic / apm-data - Conditional Complexity

Intro

Conditional complexity (also called cyclomatic complexity) is a term used to measure the complexity of software. The term refers to the number of possible paths through a program function. A higher value ofter means higher maintenance and testing costs (infosecinstitute.com).
Conditional complexity is calculated by counting all conditions in the program that can affect the execution path (e.g. if statement, loops, switches, and/or operators, try and catch blocks...).
Conditional complexity is measured at the unit level (methods, functions...).
Units are classified in four categories based on the measured McCabe index: 1-5 (simple units), 6-10 (medium complex units), 11-25 (complex units), 26+ (very complex units).

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Conditional Complexity Overall

There are 1,842 units with 41,104 lines of code in units (84.9% of code).

35 very complex units (11,470 lines of code)
58 complex units (7,803 lines of code)
86 medium complex units (5,499 lines of code)
138 simple units (4,486 lines of code)
1,525 very simple units (11,846 lines of code)

Legend:

51+

26-50

11-25

6-10

1-5

Alternative Visuals

3D view of all units

Conditional Complexity per Extension

51+

26-50

11-25

6-10

1-5

Conditional Complexity per Logical Component

primary logical decomposition

51+

26-50

11-25

6-10

1-5

Most Complex Units

Top 50 most complex units

Unit	# lines	McCabe index	# params
func() in model/modelpb/apmevent_vtproto.pb.go	1467	437	1
func() in model/modelpb/transaction_vtproto.pb.go	638	184	1
func() in model/modelpb/span_vtproto.pb.go	522	151	1
func() in model/modelpb/stacktrace_vtproto.pb.go	508	145	1
func translateResourceMetadata() in input/otlp/metadata.go	362	134	2
func() in model/modelpb/cloud_vtproto.pb.go	438	123	1
func TranslateSpan() in input/otlp/traces.go	404	118	3
func() in model/modeljson/internal/marshal_fastjson.go	250	111	1
func() in model/modelpb/service_vtproto.pb.go	362	106	1
func() in model/modelpb/event_vtproto.pb.go	367	105	1
func() in model/modelpb/error_vtproto.pb.go	348	99	1
func TranslateTransaction() in input/otlp/traces.go	299	96	4
func() in model/modelpb/error_vtproto.pb.go	301	85	1
func IsInternalMetricName() in model/modelprocessor/internal_metrics.go	171	84	1
func mapToMetadataModel() in input/elasticapm/internal/modeldecoder/v2/decoder.go	241	84	2
func() in model/modelpb/url_vtproto.pb.go	293	82	1
func() in model/modelpb/http_vtproto.pb.go	284	81	1
func mapToSpanModel() in input/elasticapm/internal/modeldecoder/v2/decoder.go	266	81	2
func() in model/modelpb/host_vtproto.pb.go	280	79	1
func() in model/modelpb/faas_vtproto.pb.go	263	73	1
func() in model/modelpb/process_vtproto.pb.go	252	72	1
func() in model/modelpb/apmevent_vtproto.pb.go	416	72	1
func() in model/modelpb/stacktrace_vtproto.pb.go	238	67	1
func() in model/modelpb/span_vtproto.pb.go	230	64	1
func mapToTransactionModel() in input/elasticapm/internal/modeldecoder/v2/decoder.go	218	63	2
func() in model/modelpb/metricset_vtproto.pb.go	216	62	1
func() in model/modelpb/transaction_vtproto.pb.go	214	60	1
func() in model/modelpb/error_vtproto.pb.go	212	59	1
func() in model/modelpb/http_vtproto.pb.go	205	59	1
func() in model/modelpb/os_vtproto.pb.go	210	58	1
func() in model/modelpb/container_vtproto.pb.go	210	58	1
func() in model/modelpb/message_vtproto.pb.go	200	56	1
func() in model/modeljson/internal/marshal_fastjson.go	223	55	1
func() in model/modelpb/span_vtproto.pb.go	182	51	1
func() in model/modelpb/metricset_vtproto.pb.go	180	51	1
func() in model/modelpb/source_vtproto.pb.go	173	50	1
func() in model/modelpb/agent_vtproto.pb.go	178	49	1
func() in model/modelpb/network_vtproto.pb.go	178	49	1
func() in model/modelpb/cloud_vtproto.pb.go	178	49	1
func() in model/modelpb/observer_vtproto.pb.go	178	49	1
func() in model/modelpb/kubernetes_vtproto.pb.go	178	49	1
func() in model/modelpb/user_vtproto.pb.go	178	49	1
func() in model/modeljson/internal/marshal_fastjson.go	185	49	1
func mapToSpanModel() in input/elasticapm/internal/modeldecoder/rumv3/decoder.go	157	49	2
func mapToTransactionModel() in input/elasticapm/internal/modeldecoder/rumv3/decoder.go	168	48	2
func() in model/modelpb/metricset_vtproto.pb.go	167	47	1
func() in model/modelpb/http_vtproto.pb.go	154	44	1
func mapToLogModel() in input/elasticapm/internal/modeldecoder/v2/decoder.go	132	43	2
func() in model/modelpb/system_vtproto.pb.go	150	42	1
func() in model/modelpb/log_vtproto.pb.go	150	42	1