org.apache.nifi.atlas.provenance.lineage

Class SimpleFlowPathLineage

java.lang.Object

org.apache.nifi.atlas.provenance.lineage.AbstractLineageStrategy

org.apache.nifi.atlas.provenance.lineage.SimpleFlowPathLineage

All Implemented Interfaces:

LineageStrategy

public class SimpleFlowPathLineage
extends AbstractLineageStrategy

Field Summary

Fields inherited from class org.apache.nifi.atlas.provenance.lineage.AbstractLineageStrategy

logger

Constructor Summary

Constructors

Constructor and Description
SimpleFlowPathLineage()

Method Summary

Modifier and Type	Method and Description
private ProvenanceEventRecord	findPreviousProvenanceEvent(AnalysisContext context, ProvenanceEventRecord event)
void	processEvent(AnalysisContext analysisContext, NiFiFlow nifiFlow, ProvenanceEventRecord event)
private void	processRemotePortEvent(AnalysisContext analysisContext, NiFiFlow nifiFlow, ProvenanceEventRecord event, DataSetRefs analyzedRefs) Create a flow_path entity corresponding to the target RemoteGroupPort when a SEND/RECEIVE event are received.
private org.apache.nifi.provenance.lineage.LineageNode	traverseLineage(org.apache.nifi.provenance.lineage.ComputeLineageResult lineage, String eventId) Recursively traverse lineage graph until a preceding provenance event is found.

Methods inherited from class org.apache.nifi.atlas.provenance.lineage.AbstractLineageStrategy

addDataSetRefs, addDataSetRefs, addDataSetRefs, addDataSetRefs, createEntity, executeAnalyzer, setLineageContext, toReferenceable

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.nifi.atlas.provenance.lineage.LineageStrategy

getTargetEventTypes

Constructor Detail

SimpleFlowPathLineage

public SimpleFlowPathLineage()

Method Detail

processEvent

public void processEvent(AnalysisContext analysisContext,
                         NiFiFlow nifiFlow,
                         ProvenanceEventRecord event)

processRemotePortEvent

private void processRemotePortEvent(AnalysisContext analysisContext,
                                    NiFiFlow nifiFlow,
                                    ProvenanceEventRecord event,
                                    DataSetRefs analyzedRefs)

Create a flow_path entity corresponding to the target RemoteGroupPort when a SEND/RECEIVE event are received. Because such entity can not be created in advance while analyzing flow statically, as ReportingTask can not determine whether a component id is a RemoteGroupPort, since connectionStatus is the only available information in ReportingContext. ConnectionStatus only knows component id, component type is unknown. For example, there is no difference to tell if a connected component is a funnel or a RemoteGroupPort.

findPreviousProvenanceEvent

private ProvenanceEventRecord findPreviousProvenanceEvent(AnalysisContext context,
                                                          ProvenanceEventRecord event)

traverseLineage

private org.apache.nifi.provenance.lineage.LineageNode traverseLineage(org.apache.nifi.provenance.lineage.ComputeLineageResult lineage,
                                                                       String eventId)

Recursively traverse lineage graph until a preceding provenance event is found.