Netflix/hal-9001
File Complexity*
The distribution of files by complexity: the sum of the McCabe indexes of their units.
File Complexity Overall
  • There are 53 files with units, with 13,632 lines of code.
    • 1 very complex files (McCabe index sum 251+; 1,432 lines of code)
    • 0 complex files (McCabe index sum 126-250; 0 lines of code)
    • 3 medium complex files (McCabe index sum 51-125; 1,263 lines of code)
    • 15 slightly complex files (McCabe index sum 26-50; 8,760 lines of code)
    • 34 simple files (McCabe index sum 1-25; 2,177 lines of code)
  • 2 main files have no units (e.g. languages without unit analysis, or files without functions) and are not classified.
system10% | 0% | 9% | 64% | 15%
Legend:
251+
126-250
51-125
26-50
1-25


explore: grouped by folders | grouped by complexity
File Complexity per Extension
251+
126-250
51-125
26-50
1-25
go10% | 0% | 9% | 64% | 15%
File Complexity per Logical Decomposition
primary
251+
126-250
51-125
26-50
1-25
hal14% | 0% | 4% | 74% | 6%
brokers0% | 0% | 60% | 39% | 0%
plugins0% | 0% | 10% | 42% | 47%
example0% | 0% | 0% | 0% | 100%
Most Complex Files (Top 50)

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# unitsMcCabe index
(sum)		per 100
lines		most complex
unit
cmd.go
in hal
 1432 163 373 26 53
broker.go
in brokers/slack
 551 24 91 17 25
prefs.go
in hal
 406 32 81 20 16
oncall_plugin.go
in plugins/pagerduty
 306 16 67 22 24
plugin.go
in plugins/pluginmgr
 294 13 50 17 17
255 16 49 19 9
plugin.go
in plugins/google_calendar
 264 13 46 17 17
plugin.go
in plugins/prefmgr
 201 10 44 22 9
broker.go
in brokers/console
 181 18 42 23 14
204 16 40 20 5
router.go
in hal
 147 10 38 26 20
broker.go
in brokers/hipchat
 179 17 36 20 9
190 15 36 19 8
plugin.go
in plugins/blabber
 196 9 35 18 8
poller.go
in plugins/pagerduty
 138 8 31 22 10
event.go
in hal
 165 15 30 18 7
page_plugin.go
in plugins/pagerduty
 129 6 28 22 11
6042 7 27 0 8
logger.go
in hal
 175 18 26 15 3
plugin.go
in plugins/archive
 174 7 24 14 8
pd_events_v1.go
in plugins/pagerduty
 133 10 22 17 7
134 12 20 15 5
google.go
in plugins/google_calendar
 111 4 19 17 16
plugin.go
in plugins/mark
 114 5 17 15 5
72 1 15 21 15
91 2 15 16 10
63 1 15 24 15
84 7 13 15 5
plugin.go
in plugins/roster
 106 5 13 12 4
kv.go
in hal
 74 5 12 16 3
helpers.go
in plugins/pagerduty
 60 4 12 20 7
http.go
in plugins/prefmgr
 36 5 11 31 5
main.go
in example/everything
 103 3 11 11 7
sqldb.go
in hal
 58 3 10 17 5
plugin.go
in plugins/docker
 52 4 10 19 5
pd_events_v2.go
in plugins/pagerduty
 97 3 10 10 8
pd_user.go
in plugins/pagerduty
 59 2 10 17 5
54 4 9 17 3
pd_service.go
in plugins/pagerduty
 50 2 8 16 5
pd_schedule.go
in plugins/pagerduty
 53 2 8 15 5
plugin.go
in plugins/inspect
 42 3 7 17 4
plugin.go
in plugins/seppuku
 39 3 6 15 4
pd_oncall.go
in plugins/pagerduty
 34 1 5 15 5
pd_policy.go
in plugins/pagerduty
 32 1 5 16 5
pd_team.go
in plugins/pagerduty
 32 1 5 16 5
plugin.go
in plugins/cross_the_streams
 42 2 5 12 4
plugin.go
in plugins/guys
 28 2 5 18 4
plugin.go
in plugins/pagerduty
 43 2 4 9 3
main.go
in example/docker-repl
 38 1 4 11 4
plugin.go
in plugins/spam
 20 2 3 15 2
About This Analysis
  • 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.
Learn more...