alibaba / MongoShake - 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).

Learn more...

Conditional Complexity Overall

There are 639 units with 10,201 lines of code in units (79.8% of code).

1 very complex units (190 lines of code)
5 complex units (522 lines of code)
55 medium complex units (3,022 lines of code)
87 simple units (2,502 lines of code)
491 very simple units (3,965 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 checkDefaultValue() in cmd/collector/sanitize.go	190	87	0
func checkConflict() in cmd/collector/sanitize.go	115	47	0
func RunCommand() in executor/db_writer.go	128	36	4
func() in collector/coordinator/full.go	134	35	1
func ExactlyMatch() in executor/collision_matrix.go	56	30	2
func transformPartialLog() in executor/executor.go	89	26	3
def check() in scripts/comparison.py	58	25	2
def check() in scripts/comparison_3x.py	61	25	2
def check() in tools/mongodb-schema.py	45	23	2
func() in collector/syncer.go	96	22	1
func ConvertEvent2Oplog() in oplog/changestram_event.go	97	21	2
int main() in scripts/hypervisor.c	91	21	2
func() in collector/filter/oplog_filter.go	68	21	1
func() in collector/docsyncer/doc_executor.go	80	21	1
func() in executor/db_writer_single.go	84	21	1
func() in collector/batcher.go	81	20	1
func() in collector/coordinator/utils.go	75	20	1
func() in executor/db_writer_single.go	70	20	1
func GetChunkMapByUrl() in sharding/sharding_operation.go	84	19	1
func StartNamespaceSpecSyncForSharding() in collector/docsyncer/doc_syncer.go	95	19	3
func BuildUpdateDelteOplog() in oplog/oplog.go	61	18	2
func BecomeMaster() in quorum/quorum.go	66	18	2
func() in collector/coordinator/replication.go	61	18	1
func() in executor/db_writer_bulk.go	90	18	1
func fillupOperationValues() in executor/collision_matrix.go	56	18	1
func() in collector/persister.go	60	17	1
func calculateSignature() in executor/collision_matrix.go	46	17	1
func() in collector/batcher.go	63	16	1
func() in collector/checkpoint.go	51	16	1
func StartIndexSync() in collector/docsyncer/doc_syncer.go	73	16	4
func TxnOpTimeEquals() in oplog/txn_optime.go	15	15	2
func() in collector/filter/orphan_filter.go	50	15	1
func() in collector/checkpoint.go	34	15	1
func IgnoreError() in executor/db_writer.go	35	15	3
func GetMetricWithSize() in common/metric.go	37	14	1
func() in collector/reader/oplog_reader.go	51	14	1
func() in collector/coordinator/utils.go	37	14	1
func checkConnection() in cmd/collector/sanitize.go	44	14	0
func() in tunnel/kafka_writer.go	61	13	1
func() in tunnel/kafka_writer.go	44	13	1
func() in common/sentinel.go	46	13	1
func NewMongoCommunityConn() in common/community_client.go	61	13	6
func BlockMongoUrlPassword() in common/common.go	29	13	2
func() in common/metric.go	62	13	1
static int parseopt() in scripts/hypervisor.c	55	13	2
func() in collector/coordinator/replication.go	50	13	1
func() in executor/operation.go	67	13	1
func() in executor/operation.go	60	13	1
func bsonDocToOplog() in oplog/txn_buffer.go	38	12	1
func NewTxnMeta() in oplog/txn_meta.go	33	12	1