elastic / apm-aggregation - 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 481 units with 9,739 lines of code in units (89.2% of code).

7 very complex units (2,285 lines of code)
11 complex units (1,523 lines of code)
14 medium complex units (1,193 lines of code)
36 simple units (1,304 lines of code)
413 very simple units (3,434 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 aggregationpb/aggregation_vtproto.pb.go	953	268	1
func() in aggregationpb/aggregation_vtproto.pb.go	259	77	1
func() in aggregationpb/aggregation_vtproto.pb.go	260	76	1
func() in aggregationpb/aggregation_vtproto.pb.go	231	65	1
func() in aggregationpb/aggregation_vtproto.pb.go	210	58	1
func() in aggregationpb/aggregation_vtproto.pb.go	188	54	1
func() in aggregationpb/aggregation_vtproto.pb.go	184	53	1
func txnMetricsToAPMEvent() in aggregators/converter.go	147	46	4
func() in aggregationpb/labels_vtproto.pb.go	146	40	1
func() in aggregationpb/labels_vtproto.pb.go	147	40	1
func() in aggregationpb/aggregation_vtproto.pb.go	122	35	1
func() in aggregationpb/aggregation_vtproto.pb.go	122	35	1
func() in aggregationpb/aggregation_vtproto.pb.go	122	35	1
func() in aggregationpb/aggregation_vtproto.pb.go	122	35	1
func() in aggregationpb/aggregation_vtproto.pb.go	246	33	1
func() in aggregationpb/labels_vtproto.pb.go	118	33	1
func() in aggregationpb/aggregation_vtproto.pb.go	123	31	1
func() in aggregationpb/aggregation_vtproto.pb.go	108	30	1
func CombinedMetricsToBatch() in aggregators/converter.go	166	25	3
func() in aggregationpb/aggregation_vtproto.pb.go	86	24	1
func() in aggregationpb/aggregation_vtproto.pb.go	82	22	1
func NewMetrics() in aggregators/internal/telemetry/metrics.go	164	21	2
func main() in aggregators/internal/protohash/generate/main.go	92	19	0
func() in aggregationpb/aggregation_vtproto.pb.go	72	19	1
func mergeHistogram() in aggregators/merger.go	60	16	2
func() in aggregators/aggregator.go	56	14	1
func() in aggregationpb/aggregation_vtproto.pb.go	60	14	1
func() in aggregationpb/aggregation_vtproto.pb.go	71	14	1
func marshalEventGlobalLabels() in aggregators/converter.go	56	13	1
func() in aggregators/aggregator.go	109	12	1
func() in aggregationpb/aggregation_vtproto.pb.go	65	12	1
func() in aggregationpb/aggregation_vtproto.pb.go	54	11	1
func() in aggregators/aggregator.go	72	10	1
func spanMetricsToAPMEvent() in aggregators/converter.go	45	10	4
func validateCfg() in aggregators/config.go	34	10	1
func() in aggregationpb/aggregation_vtproto.pb.go	33	9	1
func() in aggregationpb/aggregation_vtproto.pb.go	54	9	1
func() in aggregationpb/aggregation_vtproto.pb.go	31	9	1
func() in aggregationpb/aggregation_vtproto.pb.go	32	9	1
func() in aggregationpb/labels_vtproto.pb.go	38	9	1
func() in aggregators/aggregator.go	30	8	1
func() in aggregators/converter.go	27	8	1
func() in aggregators/merger.go	69	8	1
func() in aggregationpb/aggregation_vtproto.pb.go	49	8	1
func() in aggregationpb/aggregation_vtproto.pb.go	29	8	1
func() in aggregationpb/aggregation_vtproto.pb.go	32	8	1
func() in aggregationpb/aggregation_vtproto.pb.go	33	8	1
func() in aggregators/aggregator.go	46	7	1
func() in aggregators/aggregator.go	33	7	1
func svcTxnMetricsToAPMEvent() in aggregators/converter.go	41	7	4