netflix / spectator - 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 1,984 units with 14,631 lines of code in units (56.3% of code).

0 very complex units (0 lines of code)
2 complex units (249 lines of code)
29 medium complex units (1,128 lines of code)
72 simple units (1,745 lines of code)
1,881 very simple units (11,509 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
private static Object parse() in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/impl/Parser.java	163	38	1
private static void rewriteNextLookahead() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/PatternUtils.java	86	27	2
private boolean remove() in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/impl/QueryIndex.java	60	21	3
public static String escape() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/PatternUtils.java	33	20	1
private AsciiSet charClass() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/Parser.java	81	20	0
static String expandEscapedChars() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/PatternUtils.java	60	19	1
private void forEachMatch() in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/impl/QueryIndex.java	57	16	3
public static IpcStatus forHttpStatusStandard() in spectator-ext-ipc/src/main/java/com/netflix/spectator/ipc/IpcStatus.java	29	16	1
public EvalPayload eval() in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/impl/Evaluator.java	56	15	2
public boolean couldMatch() in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/impl/QueryIndex.java	38	15	1
private static boolean containsLookahead() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/PatternUtils.java	35	15	1
private Matcher term() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/Parser.java	41	15	0
private void forEachMatchImpl() in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/impl/QueryIndex.java	48	14	2
static List expandOrClauses() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/PatternUtils.java	35	14	2
static List query() in spectator-ext-jvm/src/main/java/com/netflix/spectator/jvm/JmxData.java	48	14	2
private void add() in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/impl/QueryIndex.java	53	13	3
private static boolean toSqlPattern() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/PatternUtils.java	38	13	2
private AsciiSet namedCharClass() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/Parser.java	25	13	0
Node compress() in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/impl/PrefixTree.java	29	12	0
public IpcLogEntry addRequestHeader() in spectator-ext-ipc/src/main/java/com/netflix/spectator/ipc/IpcLogEntry.java	17	12	2
static Id addIfMissing() in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/AtlasMeter.java	22	11	3
static RollupPolicy fromRules() in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/Rollups.java	45	11	2
private void updateMetrics() in spectator-ext-gc/src/main/java/com/netflix/spectator/gc/GcLogger.java	36	11	2
static int merge() in spectator-api/src/main/java/com/netflix/spectator/api/ArrayTagSet.java	42	11	5
default void buildQueryString() in spectator-api/src/main/java/com/netflix/spectator/impl/PatternExpr.java	38	11	2
private Matcher meta() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/Parser.java	27	11	1
public int matches() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/ZeroOrMoreMatcher.java	36	11	3
private String shardN() in spectator-ext-ipc/src/main/java/com/netflix/spectator/ipc/ServerGroup.java	21	11	1
public IpcLogEntry addResponseHeader() in spectator-ext-ipc/src/main/java/com/netflix/spectator/ipc/IpcLogEntry.java	15	11	2
private static boolean shouldSuppressSegment() in spectator-ext-ipc/src/main/java/com/netflix/spectator/ipc/http/PathSanitizer.java	30	11	2
public HttpResponse send() in spectator-ext-ipc/src/main/java/com/netflix/spectator/ipc/http/HttpRequestBuilder.java	33	11	0
private Node putImpl() in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/impl/PrefixTree.java	33	10	4
private static List expandSeq() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/PatternUtils.java	33	10	2
private void finalizeFields() in spectator-ext-ipc/src/main/java/com/netflix/spectator/ipc/IpcLogEntry.java	17	10	0
private static boolean shouldSuppressSegment() in spectator-ext-ipc/src/main/java/com/netflix/spectator/ipc/http/HostSanitizer.java	30	10	2
static String substitute() in spectator-ext-jvm/src/main/java/com/netflix/spectator/jvm/MappingExpr.java	38	10	2
static Double eval() in spectator-ext-jvm/src/main/java/com/netflix/spectator/jvm/MappingExpr.java	23	10	2
private void buildString() in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/impl/QueryIndex.java	41	9	2
private void updateCutoff() in spectator-api/src/main/java/com/netflix/spectator/api/patterns/CardinalityLimiters.java	50	9	0
public static void percentiles() in spectator-api/src/main/java/com/netflix/spectator/api/histogram/PercentileBuckets.java	44	9	3
public Hash64 updateBytes() in spectator-api/src/main/java/com/netflix/spectator/impl/Hash64.java	29	9	3
public int matches() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/IndexOfMatcher.java	24	9	3
static LevelTag get() in spectator-ext-log4j1/src/main/java/com/netflix/spectator/log4j/LevelTag.java	15	9	1
public HttpResponse send() in spectator-ext-sandbox/src/main/java/com/netflix/spectator/sandbox/HttpRequestBuilder.java	32	9	0
public TagFilterPattern() in spectator-web-spring/src/main/java/com/netflix/spectator/controllers/filter/PrototypeMeasurementFilter.java	11	8	1
private static String toPattern() in spectator-api/src/main/java/com/netflix/spectator/impl/AsciiSet.java	22	8	1
private static PatternExpr expandLookahead() in spectator-api/src/main/java/com/netflix/spectator/impl/matcher/PatternUtils.java	20	8	1
void log() in spectator-ext-ipc/src/main/java/com/netflix/spectator/ipc/IpcLogger.java	42	8	1
private static String sanitizeSegments() in spectator-ext-ipc/src/main/java/com/netflix/spectator/ipc/http/PathSanitizer.java	25	8	2
private static String sanitizeSegments() in spectator-ext-ipc/src/main/java/com/netflix/spectator/ipc/http/HostSanitizer.java	25	8	2