• There are 140 files with units, with 12,840 lines of code.
• 0 very complex files (McCabe index sum 251+; 0 lines of code)
• 2 complex files (McCabe index sum 126-250; 1,041 lines of code)
• 3 medium complex files (McCabe index sum 51-125; 1,056 lines of code)
• 18 slightly complex files (McCabe index sum 26-50; 3,563 lines of code)
• 117 simple files (McCabe index sum 1-25; 7,180 lines of code)
• 36 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.

The McCabe index of a file grows with its size: per 100 lines tells a large but plain file from a dense one, and most complex unit whether the complexity sits in one unit or is spread over many.

File	# lines	# units	McCabe index (sum)	per 100 lines	most complex unit
IConfiguration.java in priam/src/main/java/com/netflix/priam/config	455	144	144	32	1
PriamConfiguration.java in priam/src/main/java/com/netflix/priam/config	586	135	140	24	6
JMXNodeTool.java in priam/src/main/java/com/netflix/priam/connection	335	24	62	19	12
S3FileSystem.java in priam/src/main/java/com/netflix/priam/aws	413	14	55	13	12
AWSMembership.java in priam/src/main/java/com/netflix/priam/aws	308	14	54	18	13
SnapshotMetaTask.java in priam/src/main/java/com/netflix/priam/backupv2	331	21	50	15	8
TokenRetriever.java in priam/src/main/java/com/netflix/priam/identity/token	325	17	46	14	7
InstanceState.java in priam/src/main/java/com/netflix/priam/health	158	36	44	28	7
AbstractBackupPath.java in priam/src/main/java/com/netflix/priam/backup	230	34	44	19	5
CassandraAdmin.java in priam/src/main/java/com/netflix/priam/resources	298	19	43	14	5
DateUtil.java in priam/src/main/java/com/netflix/priam/utils	120	19	39	33	5
AWSInstanceInfo.java in priam/src/main/java/com/netflix/priam/identity/config	172	14	38	22	6
PgpCryptography.java in priam/src/main/java/com/netflix/priam/cryptography/pgp	264	15	35	13	8
MetaV2Proxy.java in priam/src/main/java/com/netflix/priam/backupv2	202	13	31	15	6
AbstractConfigSource.java in priam/src/main/java/com/netflix/priam/configSource	130	15	30	23	3
BackupTTLTask.java in priam/src/main/java/com/netflix/priam/backupv2	209	8	30	14	15
StandardTuner.java in priam/src/main/java/com/netflix/priam/tuner	199	10	29	15	6
JVMOptionsTuner.java in priam/src/main/java/com/netflix/priam/tuner	148	6	28	19	11
CassandraProcessManager.java in priam/src/main/java/com/netflix/priam/defaultimpl	168	7	28	17	12
TokenRetrieverUtils.java in priam/src/main/java/com/netflix/priam/identity/token	152	14	27	18	8
InstanceIdentity.java in priam/src/main/java/com/netflix/priam/identity	125	12	27	22	12
AbstractFileSystem.java in priam/src/main/java/com/netflix/priam/backup	237	14	27	11	8
JVMOption.java in priam/src/main/java/com/netflix/priam/tuner	95	14	26	27	7
BackupMetadata.java in priam/src/main/java/com/netflix/priam/backup	89	17	25	28	6
PriamInstance.java in priam/src/main/java/com/netflix/priam/identity	97	24	24	25	1
AbstractBackup.java in priam/src/main/java/com/netflix/priam/backup	93	6	24	26	10
GsonJsonSerializer.java in priam/src/main/java/com/netflix/priam/utils	118	12	22	19	3
BackupStatusMgr.java in priam/src/main/java/com/netflix/priam/backup	139	11	22	16	3
AbstractRestore.java in priam/src/main/java/com/netflix/priam/restore	214	8	21	10	9
BackupMetrics.java in priam/src/main/java/com/netflix/priam/merics	95	20	20	21	1
CassandraConfig.java in priam/src/main/java/com/netflix/priam/resources	132	8	19	14	3
S3FileSystemBase.java in priam/src/main/java/com/netflix/priam/aws	152	10	19	13	3
BackupRestoreUtil.java in priam/src/main/java/com/netflix/priam/backup	106	5	18	17	12
AuditLogTunerLog4J.java in priam/src/main/java/com/netflix/priam/tuner/dse	92	3	17	18	13
PriamScheduler.java in priam/src/main/java/com/netflix/priam/scheduler	107	8	17	16	3
RemoteBackupPath.java in priam/src/main/java/com/netflix/priam/aws	129	10	17	13	3
IncrementalBackup.java in priam/src/main/java/com/netflix/priam/backup	104	8	17	16	5
BackupVerification.java in priam/src/main/java/com/netflix/priam/backup	94	6	17	18	5
PostRestoreHook.java in priam/src/main/java/com/netflix/priam/restore	130	5	17	13	7
BackupNotificationMgr.java in priam/src/main/java/com/netflix/priam/notification	142	6	16	11	5
CassandraMonitor.java in priam/src/main/java/com/netflix/priam/health	119	4	16	13	13
SystemUtils.java in priam/src/main/java/com/netflix/priam/utils	92	6	16	17	4
PriamStartupAgent.java in priam-cass-extensions/src/main/java/com/netflix/priam/cassandra/extensions	81	3	16	20	8
CompositeConfigSource.java in priam/src/main/java/com/netflix/priam/configSource	65	10	14	22	3
StaticMembership.java in priam/src/main/java/com/netflix/priam/cli	68	9	14	21	5
Flush.java in priam/src/main/java/com/netflix/priam/cluster/management	67	4	13	19	7
BackupServletV2.java in priam/src/main/java/com/netflix/priam/resources	173	9	13	8	3
PropertiesConfigSource.java in priam/src/main/java/com/netflix/priam/configSource	75	8	13	17	4
CronTimer.java in priam/src/main/java/com/netflix/priam/scheduler	74	9	13	18	5
BoundedExponentialRetryCallable.java in priam/src/main/java/com/netflix/priam/utils	59	3	13	22	11

• File complexity is the sum of the McCabe indexes (conditional complexity) of the units (methods, functions...) in a file.
• Files are classified in five categories based on that sum: 1-25 (simple files), 26-50 (slightly complex files), 51-125 (medium complex files), 126-250 (complex files), 251+ (very complex files). The default bands are five times the unit complexity bands, as a file is a group of units.
• Only main code files with units are classified. Files without units (languages without unit analysis, or files without functions) have no complexity to measure and are left out rather than counted as simple.
• A very complex file holds many decisions, which often means it has too many responsibilities: a candidate to split, and a place where changes need more testing.