GoogleCloudPlatform / prometheus-engine

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 653 units with 10,322 lines of code in units (42.7% of code).

0 very complex units (0 lines of code)
2 complex units (480 lines of code)
31 medium complex units (2,152 lines of code)
59 simple units (1,947 lines of code)
561 very simple units (5,743 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 main() in cmd/rule-evaluator/main.go	334	42	0
func() in pkg/operator/operator_config.go	146	26	1
func() in pkg/operator/rules.go	119	24	1
func() in pkg/operator/collection.go	127	18	1
func() in pkg/export/series_cache.go	108	18	1
func main() in cmd/config-reloader/main.go	143	18	0
func main() in cmd/frontend/main.go	124	18	0
func() in pkg/export/transform.go	85	17	1
func main() in cmd/datasource-syncer/main.go	83	17	0
func() in pkg/export/gcm/promtest/local_export.go	70	16	1
func() in pkg/operator/operator.go	53	15	1
func defaultNewMetricClient() in pkg/export/export.go	47	15	2
func getTLSClient() in cmd/datasource-syncer/main.go	32	14	4
func relabelingsForSelector() in pkg/operator/apis/monitoring/v1/common_types.go	67	13	2
func() in pkg/operator/rules.go	56	13	1
func ensureCerts() in pkg/operator/webhook.go	38	13	5
func fetchTargets() in pkg/operator/target_status.go	62	13	6
func() in pkg/operator/collection.go	52	13	1
func buildExemplarAttachments() in pkg/export/transform.go	48	13	1
func() in pkg/export/gcm/promtest/promtest.go	57	13	1
func buildUpdateDataSourceRequest() in cmd/datasource-syncer/main.go	59	13	2
func convertRelabelingRule() in pkg/operator/apis/monitoring/v1/pod_config.go	41	12	1
func() in pkg/secrets/manager.go	60	12	1
func() in pkg/export/transform.go	63	12	1
*func fanoutForward[T promapiv1.Alert \| promapiv1.RuleGroup]()* in cmd/frontend/internal/rule/proxy.go	59	12	7
func New() in pkg/operator/operator.go	135	11	3
func fromAPIRules() in pkg/operator/apis/monitoring/v1/rules_config.go	45	11	1
func() in pkg/operator/apis/monitoring/v1/http_types.go	43	11	1
func buildPrometheusScrapeConfig() in pkg/operator/apis/monitoring/v1/common_types.go	55	11	6
func() in pkg/operator/operator_config.go	51	11	1
func Version() in pkg/export/export.go	38	11	0
func() in pkg/export/export.go	54	11	1
func() in pkg/export/transform.go	78	11	1
func scope() in pkg/operator/apis/monitoring/v1/rules_config.go	32	10	2
func parseScrapePool() in pkg/operator/endpoint_status_builder.go	30	10	1
func New() in pkg/lease/lease.go	61	10	4
func() in pkg/export/export.go	31	10	1
func tryPopulateUnspecifiedFromMetadata() in pkg/export/setup/setup.go	45	10	3
func main() in cmd/operator/main.go	116	10	0
func() in pkg/operator/operator.go	28	9	1
func updateTargetStatus() in pkg/operator/target_status.go	34	9	5
func newWatcher() in pkg/secrets/watch.go	34	9	4
func() in pkg/operator/apis/monitoring/v1/monitoring_types.go	33	8	1
func() in pkg/export/export.go	23	8	1
func() in pkg/export/export.go	42	8	1
func() in cmd/rule-evaluator/main.go	47	8	1
func() in cmd/rule-evaluator/internal/rules.go	33	8	1
func() in pkg/operator/operator.go	23	7	1
func validateAlertManagerEndpoint() in pkg/operator/apis/monitoring/v1/operator_types.go	19	7	1
func() in pkg/operator/apis/monitoring/v1/zz_generated.deepcopy.go	31	7	1