Uber / tchannel-javaConditional 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).

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Conditional Complexity Overall

There are 699 units with 4,865 lines of code in units (58.5% of code).

0 very complex units (0 lines of code)
0 complex units (0 lines of code)
5 medium complex units (214 lines of code)
17 simple units (503 lines of code)
677 very simple units (4,148 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
protected void channelRead0() in tchannel-core/src/main/java/com/uber/tchannel/handlers/RequestRouter.java	88	17	2
public static Frame create() in tchannel-core/src/main/java/com/uber/tchannel/frames/Frame.java	45	13	1
public static FrameType fromByte() in tchannel-core/src/main/java/com/uber/tchannel/frames/FrameType.java	28	12	1
protected boolean shouldRetryOnError() in tchannel-core/src/main/java/com/uber/tchannel/handlers/OutRequest.java	27	12	0
public static ErrorType fromByte() in tchannel-core/src/main/java/com/uber/tchannel/errors/ErrorType.java	26	11	1
public static void startOutboundSpan() in tchannel-core/src/main/java/com/uber/tchannel/tracing/Tracing.java	58	10	3
public void release() in tchannel-core/src/main/java/com/uber/tchannel/messages/Request.java	38	10	0
public void release() in tchannel-core/src/main/java/com/uber/tchannel/messages/Response.java	35	9	0
private boolean sendOutRequest() in tchannel-core/src/main/java/com/uber/tchannel/api/SubChannel.java	43	8	2
protected void sendRequest() in tchannel-core/src/main/java/com/uber/tchannel/handlers/ResponseRouter.java	25	8	0
private ListenableFuture sendRequestToAsyncHandler() in tchannel-core/src/main/java/com/uber/tchannel/handlers/RequestRouter.java	37	8	2
public static Response decodeCallResponse() in tchannel-core/src/main/java/com/uber/tchannel/codecs/MessageCodec.java	35	7	1
protected void decode() in tchannel-core/src/main/java/com/uber/tchannel/handlers/MessageDefragmenter.java	25	7	3
private TChannelMessage decodeCallFrame() in tchannel-core/src/main/java/com/uber/tchannel/handlers/MessageDefragmenter.java	39	7	2
protected void sendResponse() in tchannel-core/src/main/java/com/uber/tchannel/handlers/RequestRouter.java	25	7	1
public boolean satisfy() in tchannel-core/src/main/java/com/uber/tchannel/channels/Connection.java	16	7	1
public boolean updateScore() in tchannel-core/src/main/java/com/uber/tchannel/channels/SubPeer.java	24	7	1
private Response callDownstream() in tchannel-crossdock/src/main/java/com/uber/tchannel/crossdock/behavior/trace/TraceBehavior.java	27	6	1
public Builder validate() in tchannel-core/src/main/java/com/uber/tchannel/messages/Request.java	15	6	0
public static Request decodeCallRequest() in tchannel-core/src/main/java/com/uber/tchannel/codecs/MessageCodec.java	32	6	1
public static int scoreAddr() in tchannel-core/src/main/java/com/uber/tchannel/utils/TChannelUtilities.java	17	6	2
public static boolean validFlags() in tchannel-core/src/main/java/com/uber/tchannel/headers/RetryFlag.java	12	6	1
public void benchmark() in tchannel-benchmark/src/main/java/com/uber/tchannel/benchmarks/LargePayloadBenchmark.java	34	5	1
public void benchmark() in tchannel-benchmark/src/main/java/com/uber/tchannel/benchmarks/PingPongServerBenchmark.java	34	5	1
public static int decodeChecksum() in tchannel-core/src/main/java/com/uber/tchannel/codecs/CodecUtils.java	11	5	2
public static void encodeChecksum() in tchannel-core/src/main/java/com/uber/tchannel/codecs/CodecUtils.java	12	5	3
public static void readArgs() in tchannel-core/src/main/java/com/uber/tchannel/codecs/CodecUtils.java	18	5	2
public static InetAddress getCurrentIp() in tchannel-core/src/main/java/com/uber/tchannel/utils/TChannelUtilities.java	22	5	0
public static boolean isSupported() in tchannel-core/src/main/java/com/uber/tchannel/headers/ArgScheme.java	13	5	1
protected void initChannel() in tchannel-core/src/main/java/com/uber/tchannel/api/TChannel.java	23	5	1
public void addListener() in tchannel-core/src/main/java/com/uber/tchannel/api/TFuture.java	24	5	2
public static long calculateChecksum() in tchannel-core/src/main/java/com/uber/tchannel/checksum/Checksums.java	17	5	2
public static ChecksumType fromByte() in tchannel-core/src/main/java/com/uber/tchannel/checksum/ChecksumType.java	14	5	1
protected void handleResponse() in tchannel-core/src/main/java/com/uber/tchannel/handlers/ResponseRouter.java	15	5	1
protected void channelRead0() in tchannel-crossdock/src/main/java/com/uber/tchannel/crossdock/HTTPServer.java	30	4	2
public void run() in tchannel-example/src/main/java/com/uber/tchannel/ping/PingClient.java	36	4	0
public String toString() in tchannel-core/src/main/java/com/uber/tchannel/messages/Request.java	12	4	0
public void touch() in tchannel-core/src/main/java/com/uber/tchannel/messages/Request.java	11	4	1
public int argSize() in tchannel-core/src/main/java/com/uber/tchannel/messages/Request.java	13	4	0
public boolean sendOutRequest() in tchannel-core/src/main/java/com/uber/tchannel/api/SubChannel.java	14	4	1
protected TFuture sendRequest() in tchannel-core/src/main/java/com/uber/tchannel/api/SubChannel.java	20	4	3
public void shutdown() in tchannel-core/src/main/java/com/uber/tchannel/api/TChannel.java	17	4	1
private void popSpan() in tchannel-core/src/main/java/com/uber/tchannel/api/TFuture.java	15	4	2
protected void writeFrames() in tchannel-core/src/main/java/com/uber/tchannel/handlers/MessageFragmenter.java	25	4	3
public void channelRead() in tchannel-core/src/main/java/com/uber/tchannel/handlers/LoadControlHandler.java	9	4	2
public void write() in tchannel-core/src/main/java/com/uber/tchannel/handlers/LoadControlHandler.java	9	4	3
public Factory() in tchannel-core/src/main/java/com/uber/tchannel/handlers/LoadControlHandler.java	13	4	2
protected void setResponseFuture() in tchannel-core/src/main/java/com/uber/tchannel/handlers/OutRequest.java	17	4	2
private TChannelMessage decodeCallContinueFrame() in tchannel-core/src/main/java/com/uber/tchannel/handlers/MessageDefragmenter.java	25	4	1
public void setState() in tchannel-core/src/main/java/com/uber/tchannel/channels/Connection.java	8	4	1