apache / logging-log4net - 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 756 units with 11,382 lines of code in units (65.6% of code).

1 very complex units (656 lines of code)
2 complex units (552 lines of code)
12 medium complex units (876 lines of code)
57 simple units (2,057 lines of code)
684 very simple units (7,241 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 class XmlHierarchyConfigurator() in src/log4net/Repository/Hierarchy/XmlHierarchyConfigurator.cs	656	106	1
public abstract class Logger() in src/log4net/Repository/Hierarchy/Logger.cs	266	32	1
public class Hierarchy() in src/log4net/Repository/Hierarchy/Hierarchy.cs	286	29	2
private void ParseInternal() in src/log4net/Util/PatternParser.cs	91	21	2
protected override void FormatXml() in src/log4net/Layout/XmlLayoutSchemaLog4j.cs	85	19	2
protected override void Append() in src/log4net/Appender/BufferingAppenderSkeleton.cs	51	18	1
protected override void FormatXml() in src/log4net/Layout/XmlLayout.cs	84	17	2
private static void ConfigureRepository() in src/log4net/Core/DefaultRepositorySelector.cs	91	16	2
private void InitializeFromOneFile() in src/log4net/Appender/RollingFileAppender.cs	63	15	2
public LocationInfo() in src/log4net/Core/LocationInfo.cs	66	15	1
private void ConfigureFromUri() in src/log4net/Config/XmlConfiguratorAttribute.cs	87	14	1
protected override void Append() in src/log4net/Appender/EventLogAppender.cs	72	13	1
protected virtual void RollOverRenameFiles() in src/log4net/Appender/RollingFileAppender.cs	61	13	1
public override FilterDecision Decide() in src/log4net/Filter/PropertyFilter.cs	31	11	1
public sealed class SystemStringFormat() in src/log4net/Util/SystemStringFormat.cs	94	11	3
public override FilterDecision Decide() in src/log4net/Filter/StringMatchFilter.cs	33	10	1
protected virtual void FixVolatileData() in src/log4net/Core/LoggingEvent.cs	49	10	1
public bool Flush() in src/log4net/Repository/LoggerRepositorySkeleton.cs	41	10	1
private void ConfigureFromFile() in src/log4net/Config/XmlConfiguratorAttribute.cs	62	10	2
public static string AssemblyFileName() in src/log4net/Util/SystemInfo.cs	53	10	1
protected override void Append() in src/log4net/Appender/AnsiColorTerminalAppender.cs	42	9	1
public override void ActivateOptions() in src/log4net/Appender/AnsiColorTerminalAppender.cs	40	9	0
protected virtual SyslogSeverity GetSeverity() in src/log4net/Appender/RemoteSyslogAppender.cs	36	9	1
public override void ActivateOptions() in src/log4net/Appender/EventLogAppender.cs	51	9	0
protected virtual SyslogSeverity GetSeverity() in src/log4net/Appender/LocalSyslogAppender.cs	36	9	1
public virtual void Flush() in src/log4net/Appender/BufferingAppenderSkeleton.cs	39	9	1
protected override void SendBuffer() in src/log4net/Appender/AdoNetAppender.cs	35	9	1
protected virtual void SendBuffer() in src/log4net/Appender/AdoNetAppender.cs	48	9	2
protected override void Convert() in src/log4net/Layout/Pattern/ExceptionPatternConverter.cs	37	9	2
public void RenderObject() in src/log4net/ObjectRenderer/DefaultRenderer.cs	41	9	3
protected override void Append() in src/log4net/Appender/ColoredConsoleAppender.cs	30	8	1
public void DoAppend() in src/log4net/Appender/AppenderSkeleton.cs	40	8	1
public override void ActivateOptions() in src/log4net/Appender/RollingFileAppender.cs	37	8	0
protected static DateTime NextCheckDate() in src/log4net/Appender/RollingFileAppender.cs	55	8	2
public override FilterDecision Decide() in src/log4net/Filter/LevelRangeFilter.cs	13	8	1
private void CreateCompositeProperties() in src/log4net/Core/LoggingEvent.cs	34	8	0
public ILoggerRepository CreateRepository() in src/log4net/Core/DefaultRepositorySelector.cs	55	8	2
protected virtual void OnLoggerRepositoryCreatedEvent() in src/log4net/Core/DefaultRepositorySelector.cs	48	8	1
protected sealed override void Convert() in src/log4net/Layout/Pattern/NamedPatternConverter.cs	33	8	2
private static void InternalConfigure() in src/log4net/Config/XmlConfigurator.cs	50	8	2
public static string AssemblyLocationInfo() in src/log4net/Util/SystemInfo.cs	35	8	1
protected virtual void SendEmail() in src/log4net/Appender/SmtpAppender.cs	42	7	1
protected virtual void AppendMessage() in src/log4net/Appender/RemoteSyslogAppender.cs	22	7	3
protected override void OpenFile() in src/log4net/Appender/RollingFileAppender.cs	34	7	2
private void RollOverIfDateBoundaryCrossing() in src/log4net/Appender/RollingFileAppender.cs	25	7	0
protected void RollOverTime() in src/log4net/Appender/RollingFileAppender.cs	34	7	1
private string? TryGetCurrentUserName() in src/log4net/Core/LoggingEvent.cs	38	7	0
private void CacheProperties() in src/log4net/Core/LoggingEvent.cs	25	7	0
public bool IsTriggeringEvent() in src/log4net/Core/ExceptionEvaluator.cs	14	7	1
static LoggerManager() in src/log4net/Core/LoggerManager.cs	49	7	0