org.apache.nifi.cdc.mysql.event.io

Class AbstractBinlogEventWriter<T extends BinlogEventInfo>

java.lang.Object

org.apache.nifi.cdc.event.io.AbstractEventWriter<T>

org.apache.nifi.cdc.mysql.event.io.AbstractBinlogEventWriter<T>

All Implemented Interfaces:

EventWriter<T>

Direct Known Subclasses:

AbstractBinlogTableEventWriter, BeginTransactionEventWriter, CommitTransactionEventWriter

public abstract class AbstractBinlogEventWriter<T extends BinlogEventInfo>
extends AbstractEventWriter<T>

An abstract base class for writing MYSQL binlog events into flow file(s), e.g.

Field Summary

Fields inherited from class org.apache.nifi.cdc.event.io.AbstractEventWriter

jsonGenerator

Fields inherited from interface org.apache.nifi.cdc.event.io.EventWriter

APPLICATION_JSON, CDC_EVENT_TYPE_ATTRIBUTE, SEQUENCE_ID_KEY

Constructor Summary

Constructors

Constructor and Description
AbstractBinlogEventWriter()

Method Summary

Modifier and Type	Method and Description
protected void	configureEventWriter(EventWriterConfiguration eventWriterConfiguration, ProcessSession session, EventInfo eventInfo)
void	finishAndTransferFlowFile(ProcessSession session, EventWriterConfiguration eventWriterConfiguration, String transitUri, long seqId, BinlogEventInfo eventInfo, Relationship relationship)
protected Map<String,String>	getCommonAttributes(long sequenceId, BinlogEventInfo eventInfo)
protected boolean	maxEventsPerFlowFile(EventWriterConfiguration eventWriterConfiguration)
private boolean	multipleEventsPerFlowFile(EventWriterConfiguration eventWriterConfiguration)
protected boolean	oneTransactionPerFlowFile(EventWriterConfiguration eventWriterConfiguration)
long	writeEvent(ProcessSession session, String transitUri, T eventInfo, long currentSequenceId, Relationship relationship, EventWriterConfiguration eventWriterConfiguration)
protected void	writeJson(T event)
private boolean	writtenMultipleEvents(EventWriterConfiguration eventWriterConfiguration)

Methods inherited from class org.apache.nifi.cdc.event.io.AbstractEventWriter

createJsonGenerator, endFile, endJson, startJson

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractBinlogEventWriter

public AbstractBinlogEventWriter()

Method Detail

writeJson

protected void writeJson(T event)
                  throws IOException

Throws:

IOException

getCommonAttributes

protected Map<String,String> getCommonAttributes(long sequenceId,
                                                 BinlogEventInfo eventInfo)

writeEvent

public long writeEvent(ProcessSession session,
                       String transitUri,
                       T eventInfo,
                       long currentSequenceId,
                       Relationship relationship,
                       EventWriterConfiguration eventWriterConfiguration)

finishAndTransferFlowFile

public void finishAndTransferFlowFile(ProcessSession session,
                                      EventWriterConfiguration eventWriterConfiguration,
                                      String transitUri,
                                      long seqId,
                                      BinlogEventInfo eventInfo,
                                      Relationship relationship)

configureEventWriter

protected void configureEventWriter(EventWriterConfiguration eventWriterConfiguration,
                                    ProcessSession session,
                                    EventInfo eventInfo)

multipleEventsPerFlowFile

private boolean multipleEventsPerFlowFile(EventWriterConfiguration eventWriterConfiguration)

writtenMultipleEvents

private boolean writtenMultipleEvents(EventWriterConfiguration eventWriterConfiguration)

maxEventsPerFlowFile

protected boolean maxEventsPerFlowFile(EventWriterConfiguration eventWriterConfiguration)

oneTransactionPerFlowFile

protected boolean oneTransactionPerFlowFile(EventWriterConfiguration eventWriterConfiguration)