• There are 45 files with units, with 4,091 lines of code.
• 0 very complex files (McCabe index sum 251+; 0 lines of code)
• 0 complex files (McCabe index sum 126-250; 0 lines of code)
• 3 medium complex files (McCabe index sum 51-125; 933 lines of code)
• 4 slightly complex files (McCabe index sum 26-50; 720 lines of code)
• 38 simple files (McCabe index sum 1-25; 2,438 lines of code)
• 13 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
nc_dump_ebs.py in scripts/bastion_scripts/ebs	377	14	66	18	11
key_value_writer.cc in utils	335	12	65	19	14
dumper_config.cc in dumper	221	27	62	28	26
file_util.cc in utils	227	17	48	21	11
memcache_utils.h in utils	249	30	33	13	2
memcache_utils.cc in utils	147	19	31	21	5
status.h in utils	97	24	26	27	2
cleanup_task.cc in tasks	147	4	25	17	12
dumper.cc in dumper	210	7	25	12	14
socket.cc in utils	120	7	24	20	9
stopwatch.h in utils	133	14	23	17	6
dumper_config.h in dumper	123	22	22	18	1
metadump_task.cc in tasks	163	4	21	13	12
process_metabuf_task.cc in tasks	133	4	19	14	11
metrics.h in utils	60	18	18	30	1
slice.h in utils	57	7	12	21	5
resume_task.cc in tasks	56	4	11	20	5
aws_utils.cc in utils	85	9	11	13	2
task_scheduler.cc in tasks	105	6	10	10	3
status.cc in utils	71	1	10	14	10
s3_upload_task.cc in tasks	89	2	9	10	7
task_thread.h in tasks	46	9	9	20	1
key_filter.cc in utils	24	2	7	29	5
ketama_hash.h in utils	51	4	5	10	2
dumper-main.cc in root	47	3	5	11	2
task_thread.cc in tasks	41	2	4	10	3
task.cc in tasks	59	3	4	7	2
mem_mgr.cc in utils	35	2	4	11	3
aws_utils.h in utils	32	4	4	13	1
net_util.cc in utils	29	1	4	14	4
key_cleaner.cc in utils	18	2	4	22	2
socket_pool.cc in utils	42	2	3	7	2
key_value_writer.h in utils	50	3	3	6	1
rest_endpoint.cc in common	32	3	3	9	1
string_util.h in utils	17	1	2	12	2
file_util.h in utils	63	2	2	3	1
sockaddr.cc in utils	29	1	2	7	2
ketama_hash.cc in utils	44	1	2	5	2
metrics.cc in utils	56	2	2	4	1
task_scheduler.h in tasks	44	1	1	2	1
task.h in tasks	47	1	1	2	1
s3_upload_task.h in tasks	23	1	1	4	1
mem_mgr.h in utils	21	1	1	5	1
logger.cc in common	16	1	1	6	1
logger.h in common	20	1	1	5	1

• 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.