apache / pekko-connectors - 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 1,919 units with 30,194 lines of code in units (60.7% of code).

1 very complex units (147 lines of code)
15 complex units (2,001 lines of code)
50 medium complex units (2,983 lines of code)
138 simple units (3,570 lines of code)
1,715 very simple units (21,493 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 def nioEventLoop() in unix-domain-socket/src/main/scala/org/apache/pekko/stream/connectors/unixdomainsocket/impl/UnixDomainSocketImpl.scala	147	57	2
private[this] def churn() in csv/src/main/scala/org/apache/pekko/stream/connectors/csv/impl/CsvParser.scala	175	48	0
def clientConnected() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/ServerState.scala	230	42	1
def serverConnected() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/ClientState.scala	175	42	2
def apply() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/ServerState.scala	198	37	7
override def write() in huawei-push-kit/src/main/scala/org/apache/pekko/stream/connectors/huawei/pushkit/impl/PushKitJsonSupport.scala	39	36	1
override def read() in huawei-push-kit/src/main/scala/org/apache/pekko/stream/connectors/huawei/pushkit/impl/PushKitJsonSupport.scala	60	36	1
def apply() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/ClientState.scala	213	31	5
def getMetadata: Optional[java.util.Map[String, String]] = metadata.map() in google-cloud-storage/src/main/scala/org/apache/pekko/stream/connectors/googlecloud/storage/StorageObject.scala	188	31	1
override def shape: FlowShape[WriteMessage, CommittableReadResult] = FlowShape.of() in amqp/src/main/scala/org/apache/pekko/stream/connectors/amqp/impl/AmqpRpcFlowStage.scala	168	31	2
def apply() in s3/src/main/scala/org/apache/pekko/stream/connectors/s3/settings.scala	121	31	1
private def producerLogic() in jms/src/main/scala/org/apache/pekko/stream/connectors/jms/impl/JmsProducerStage.scala	135	30	1
private def producerLogic() in jakartams/src/main/scala/org/apache/pekko/stream/connectors/jakartams/impl/JmsProducerStage.scala	135	30	1
private Socket _openFTPDataConnection_() in ftp/src/main/java/org/apache/commons/net/ftp/LegacyFtpsClient.java	81	28	2
override def write() in google-fcm/src/main/scala/org/apache/pekko/stream/connectors/google/firebase/fcm/v1/impl/FcmJsonSupport.scala	31	26	1
override def read() in google-fcm/src/main/scala/org/apache/pekko/stream/connectors/google/firebase/fcm/v1/impl/FcmJsonSupport.scala	52	26	1
private[streaming] override def commandFlow[A]() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/scaladsl/MqttSession.scala	104	25	1
def decodeControlPacket() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/model.scala	49	25	1
override def initialAttributes = name() in sqs/src/main/scala/org/apache/pekko/stream/connectors/sqs/impl/BalancingMapAsync.scala	65	25	1
override def commandFlow[A]() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/scaladsl/MqttSession.scala	116	24	1
def apply() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/RequestState.scala	75	22	6
def apply() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/RequestState.scala	61	22	6
override def createLogic() in file/src/main/scala/org/apache/pekko/stream/connectors/file/impl/archive/TarReaderStage.scala	198	22	1
override def initialAttributes: Attributes = name() in simple-codecs/src/main/scala/org/apache/pekko/stream/connectors/recordio/impl/RecordIOFramingStage.scala	63	21	1
override def createLogic() in kinesis/src/main/scala/org/apache/pekko/stream/connectors/kinesis/impl/KinesisSourceStage.scala	99	21	1
def listening() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/ServerState.scala	74	20	1
override protected def initialAttributes: Attributes = Attributes.name() in amqp/src/main/scala/org/apache/pekko/stream/connectors/amqp/impl/AmqpSourceStage.scala	117	20	1
def sendScrollScanRequest() in elasticsearch/src/main/scala/org/apache/pekko/stream/connectors/elasticsearch/impl/ElasticsearchSourceStage.scala	99	20	0
override def createLogic() in xml/src/main/scala/org/apache/pekko/stream/connectors/xml/impl/StreamingXmlParser.scala	72	20	1
def createLogicAndMaterializedValue() in ftp/src/main/scala/org/apache/pekko/stream/connectors/ftp/impl/FtpIOGraphStage.scala	91	19	1
def this() in xml/src/main/scala/org/apache/pekko/stream/connectors/xml/impl/StreamingXmlWriter.scala	72	19	1
def filter() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/RequestState.scala	30	18	2
def cachedHostConnectionPool[T: FromResponseUnmarshaller]() in google-common/src/main/scala/org/apache/pekko/stream/connectors/google/http/GoogleHttp.scala	57	18	5
override def createLogic() in xml/src/main/scala/org/apache/pekko/stream/connectors/xml/impl/Subtree.scala	81	18	1
public GraphStageLogic createLogic() in file/src/main/java/org/apache/pekko/stream/connectors/file/impl/DirectoryChangesSource.java	106	17	1
def withBufferType() in s3/src/main/scala/org/apache/pekko/stream/connectors/s3/settings.scala	68	16	1
def toCsv() in csv/src/main/scala/org/apache/pekko/stream/connectors/csv/impl/CsvFormatter.scala	62	15	1
def serverConnect() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/ClientState.scala	61	15	1
private def setField() in influxdb/src/main/scala/org/apache/pekko/stream/connectors/influxdb/impl/PekkoConnectorsResultMapperHelper.scala	33	15	4
override def createLogic() in xml/src/main/scala/org/apache/pekko/stream/connectors/xml/impl/Subslice.scala	63	15	1
private def chunkAndRequestWithContext[C]() in s3/src/main/scala/org/apache/pekko/stream/connectors/s3/impl/S3Stream.scala	97	15	6
def apply() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/ServerState.scala	63	14	6
def onFailure() in mqttv5/src/main/scala/org/apache/pekko/stream/connectors/mqttv5/impl/MqttFlowStage.scala	65	14	2
protected def decode() in csv/src/main/scala/org/apache/pekko/stream/connectors/csv/impl/CsvToMapJavaStage.scala	69	13	1
def main() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/RequestState.scala	53	13	2
def apply() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/ServerState.scala	52	13	6
def apply() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/ServerState.scala	52	13	6
def apply() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/ClientState.scala	42	13	4
def apply() in mqtt-streaming/src/main/scala/org/apache/pekko/stream/connectors/mqtt/streaming/impl/ClientState.scala	42	13	4
private[jms] def populateMessageProperties() in jms/src/main/scala/org/apache/pekko/stream/connectors/jms/impl/JmsMessageProducer.scala	17	13	2