netflix / zuul - 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).

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Conditional Complexity Overall

There are 1,638 units with 12,714 lines of code in units (66.9% of code).

0 very complex units (0 lines of code)
0 complex units (0 lines of code)
21 medium complex units (1,093 lines of code)
56 simple units (1,630 lines of code)
1,561 very simple units (9,991 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
public void userEventTriggered() in zuul-core/src/main/java/com/netflix/zuul/netty/server/ssl/SslHandshakeInfoHandler.java	104	24	2
public void log() in zuul-core/src/main/java/com/netflix/netty/common/accesslog/AccessLogPublisher.java	61	21	9
public SocketAddress apply() in zuul-core/src/main/java/com/netflix/zuul/netty/server/SocketAddressProperty.java	45	20	1
public void filter() in zuul-core/src/main/java/com/netflix/zuul/netty/filter/ZuulFilterChainRunner.java	56	17	2
public void userEventTriggered() in zuul-core/src/main/java/com/netflix/zuul/netty/server/ClientRequestReceiver.java	56	17	2
protected final O filter() in zuul-core/src/main/java/com/netflix/zuul/netty/filter/BaseZuulFilterRunner.java	79	13	2
public void channelRead() in zuul-core/src/main/java/com/netflix/zuul/netty/server/http2/Http2ContentLengthEnforcingHandler.java	39	13	2
protected void channelRead0() in zuul-core/src/main/java/com/netflix/zuul/netty/server/push/PushMessageSender.java	65	13	2
public static void handleRejection() in zuul-core/src/main/java/com/netflix/netty/common/throttle/RejectionUtils.java	41	12	9
public static void compareContextState() in zuul-core/src/main/java/com/netflix/zuul/context/Debug.java	25	12	3
private void logPassport() in zuul-core/src/main/java/com/netflix/zuul/netty/insights/PassportLoggingHandler.java	60	12	1
public void channelRead() in zuul-core/src/main/java/com/netflix/zuul/netty/server/ClientResponseWriter.java	49	12	2
private void parseSrcAddr() in zuul-core/src/main/java/com/netflix/netty/common/proxyprotocol/HAProxyMessageChannelHandler.java	33	11	2
private void parseDstAddr() in zuul-core/src/main/java/com/netflix/netty/common/proxyprotocol/HAProxyMessageChannelHandler.java	36	11	2
public void userEventTriggered() in zuul-core/src/main/java/com/netflix/zuul/netty/server/OriginResponseReceiver.java	44	11	2
public void userEventTriggered() in zuul-core/src/main/java/com/netflix/zuul/netty/server/ClientResponseWriter.java	41	11	2
private void channelReadInternal() in zuul-core/src/main/java/com/netflix/zuul/netty/server/ClientRequestReceiver.java	74	11	2
private void processErrorFromOrigin() in zuul-core/src/main/java/com/netflix/zuul/filters/endpoint/ProxyEndpoint.java	56	11	2
public void setException() in zuul-core/src/main/java/com/netflix/zuul/niws/RequestAttempt.java	39	11	1
public void collectRouteStats() in zuul-core/src/main/java/com/netflix/zuul/stats/StatsManager.java	51	11	2
public HttpResponseMessage apply() in zuul-sample/src/main/java/com/netflix/zuul/sample/filters/outbound/ZuulResponseFilter.java	39	11	1
public ErrorType mapNettyToOutboundErrorType() in zuul-core/src/main/java/com/netflix/zuul/netty/NettyRequestAttemptFactory.java	28	10	1
public boolean shouldFilter() in zuul-core/src/main/java/com/netflix/zuul/filters/common/GZipResponseFilter.java	24	10	1
protected void handleOriginNonSuccessResponse() in zuul-core/src/main/java/com/netflix/zuul/filters/endpoint/ProxyEndpoint.java	68	9	2
private static HttpRequestMessage massageRequestURI() in zuul-core/src/main/java/com/netflix/zuul/filters/endpoint/ProxyEndpoint.java	43	9	1
public RequestAttempt() in zuul-core/src/main/java/com/netflix/zuul/niws/RequestAttempt.java	40	9	5
private void incrementStateCounter() in zuul-core/src/main/java/com/netflix/zuul/passport/CurrentPassport.java	31	9	1
public static HttpQueryParams parse() in zuul-core/src/main/java/com/netflix/zuul/message/http/HttpQueryParams.java	34	9	1
static final String hostKey() in zuul-core/src/main/java/com/netflix/zuul/stats/StatsManager.java	23	9	1
public void filter() in zuul-core/src/main/java/com/netflix/zuul/netty/filter/ZuulEndPointRunner.java	31	8	2
private HttpResponse buildHttpResponse() in zuul-core/src/main/java/com/netflix/zuul/netty/server/ClientResponseWriter.java	30	8	1
private HttpRequestMessage buildZuulHttpRequest() in zuul-core/src/main/java/com/netflix/zuul/netty/server/ClientRequestReceiver.java	62	8	2
private void fireWriteError() in zuul-core/src/main/java/com/netflix/zuul/netty/server/ClientRequestReceiver.java	18	8	3
private void initializeTransport() in zuul-core/src/main/java/com/netflix/zuul/netty/server/Server.java	50	8	0
public void finish() in zuul-core/src/main/java/com/netflix/zuul/filters/endpoint/ProxyEndpoint.java	23	8	1
public RequestAttempt() in zuul-core/src/main/java/com/netflix/zuul/niws/RequestAttempt.java	45	8	11
public static String jsonFromMap() in zuul-core/src/main/java/com/netflix/zuul/util/JsonUtility.java	30	8	1
private static Pair parseHostHeader() in zuul-core/src/main/java/com/netflix/zuul/message/http/HttpRequestMessageImpl.java	31	8	1
public void collectRequestStats() in zuul-core/src/main/java/com/netflix/zuul/stats/StatsManager.java	30	8	1
public final void channelRead() in zuul-sample/src/main/java/com/netflix/zuul/sample/push/SampleWebSocketPushClientProtocolHandler.java	24	8	2
public void write() in zuul-core/src/main/java/com/netflix/netty/common/HttpServerLifecycleChannelHandler.java	26	7	3
private void closeChannel() in zuul-core/src/main/java/com/netflix/netty/common/Http2ConnectionCloseHandler.java	27	7	2
protected List getTrustedX509Certificates() in zuul-core/src/main/java/com/netflix/zuul/netty/ssl/BaseSslContextFactory.java	32	7	0
protected void recordFilterCompletion() in zuul-core/src/main/java/com/netflix/zuul/netty/filter/BaseZuulFilterRunner.java	44	7	5
public void userEventTriggered() in zuul-core/src/main/java/com/netflix/zuul/netty/connectionpool/ConnectionPoolHandler.java	34	7	2
public boolean release() in zuul-core/src/main/java/com/netflix/zuul/netty/connectionpool/DefaultClientChannelManager.java	46	7	1
protected void channelReadInternal() in zuul-core/src/main/java/com/netflix/zuul/netty/server/OriginResponseReceiver.java	24	7	2
private void writeInternal() in zuul-core/src/main/java/com/netflix/zuul/netty/server/OriginResponseReceiver.java	40	7	3
public void userEventTriggered() in zuul-core/src/main/java/com/netflix/zuul/netty/server/http2/Http2OrHttpHandler.java	29	7	2
protected final void channelRead0() in zuul-core/src/main/java/com/netflix/zuul/netty/server/push/PushAuthHandler.java	27	7	2