Package io.debezium.connector.oracle.logminer.processor.memory

Class MemoryLogMinerEventProcessor

java.lang.Object

io.debezium.connector.oracle.logminer.processor.AbstractLogMinerEventProcessor<MemoryTransaction>

io.debezium.connector.oracle.logminer.processor.memory.MemoryLogMinerEventProcessor

All Implemented Interfaces:

CacheProvider<MemoryTransaction>, LogMinerEventProcessor, AutoCloseable

public class MemoryLogMinerEventProcessor
extends AbstractLogMinerEventProcessor<MemoryTransaction>

A LogMinerEventProcessor that uses the JVM heap to store events as they're being processed and emitted from Oracle LogMiner.

Author:

Chris Cranford

Nested Class Summary

Nested classes/interfaces inherited from class io.debezium.connector.oracle.logminer.processor.AbstractLogMinerEventProcessor

AbstractLogMinerEventProcessor.Counters

Field Summary

Fields

Modifier and Type	Field	Description
private final LogMinerCache<String,LogMinerEvent>	eventCache
private final LogMinerCache<String,String>	processedTransactionsCache
private final LogMinerCache<String,String>	schemaCache
private final LogMinerCache<String,MemoryTransaction>	transactionCache

Fields inherited from class io.debezium.connector.oracle.logminer.processor.AbstractLogMinerEventProcessor

counters, sqlQuery

Fields inherited from interface io.debezium.connector.oracle.logminer.processor.CacheProvider

EVENTS_CACHE_NAME, PROCESSED_TRANSACTIONS_CACHE_NAME, SCHEMA_CHANGES_CACHE_NAME, TRANSACTIONS_CACHE_NAME

Constructor Summary

Constructors

Constructor	Description
MemoryLogMinerEventProcessor(ChangeEventSource.ChangeEventSourceContext context, OracleConnectorConfig connectorConfig, OracleConnection jdbcConnection, EventDispatcher<OraclePartition,TableId> dispatcher, OraclePartition partition, OracleOffsetContext offsetContext, OracleDatabaseSchema schema, LogMinerStreamingChangeEventSourceMetrics metrics)

Method Summary

Modifier and Type	Method	Description
void	close()
protected MemoryTransaction	createTransaction(LogMinerEventRow row)	Creates a new transaction based on the supplied START event.
LogMinerCache<String,LogMinerEvent>	getEventCache()	Get the LogMiner events cache Key - The event id, in the format of transactionId-eventSequence Value - The raw LogMinerEvent object instance
LogMinerCache<String,String>	getProcessedTransactionsCache()	Get the processed transactions cache Key - The unique transaction id Value - The transaction's commit or rollback system change number
LogMinerCache<String,String>	getSchemaChangesCache()	Get the Schema Changes cache Key - The system change number of the schema change Value - The table the schema change is related to
LogMinerCache<String,MemoryTransaction>	getTransactionCache()	Get the transaction cache Key - The unique transaction id Value - The transaction instance

Methods inherited from class io.debezium.connector.oracle.logminer.processor.AbstractLogMinerEventProcessor

abandonTransactionOverEventThreshold, abandonTransactions, addToTransaction, calculateNewStartScn, cleanupAfterTransactionRemovedFromCache, compareStartScn, createQueryStatement, dispatchSchemaChangeEventAndGetTableForNewCapturedTable, displayCacheStatistics, finalizeTransactionCommit, finalizeTransactionRollback, getAbandonedTransactionsCache, getAndRemoveTransactionFromCache, getConfig, getFirstActiveTransactionKey, getLastProcessedScn, getLastProcessedScnChangeTime, getLastScnToAbandon, getLoggedAbandonedTransactionTableNames, getOldestTransactionInCache, getQueryString, getSchema, getTableMetadataDdl, getTransactionCacheMinimumScn, getTransactionEventCount, getTransactionEventIterator, getTransactionIdPrefix, getTransactionKeysWithPrefix, handleCommit, handleCommitNotFoundInBuffer, handleDataEvent, handleLobWrite, handleMissingScn, handleRollback, handleRollbackNotFoundInBuffer, handleSchemaChange, handleSelectLobLocator, handleStart, handleUnsupportedEvent, hasSchemaChangeBeenSeen, isRecentlyProcessed, isTransactionIdWithNoSequence, isTransactionOverEventThreshold, isTransactionUserExcluded, isTrxIdRawValue, oldestTransactionComparison, process, processResults, processRow, purgeCache, reCreateInMemoryCache, removeEventWithRowId, resetTransactionToStart, warnPotentiallyStuckScn

Methods inherited from class java.lang.Object

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

Field Details

transactionCache

private final LogMinerCache<String,MemoryTransaction> transactionCache

eventCache

private final LogMinerCache<String,LogMinerEvent> eventCache

schemaCache

private final LogMinerCache<String,String> schemaCache

processedTransactionsCache

private final LogMinerCache<String,String> processedTransactionsCache

Constructor Details

MemoryLogMinerEventProcessor

public MemoryLogMinerEventProcessor(ChangeEventSource.ChangeEventSourceContext context,
 OracleConnectorConfig connectorConfig,
 OracleConnection jdbcConnection,
 EventDispatcher<OraclePartition,TableId> dispatcher,
 OraclePartition partition,
 OracleOffsetContext offsetContext,
 OracleDatabaseSchema schema,
 LogMinerStreamingChangeEventSourceMetrics metrics)

Method Details

createTransaction

protected MemoryTransaction createTransaction(LogMinerEventRow row)

Description copied from class: AbstractLogMinerEventProcessor

Creates a new transaction based on the supplied START event.

Specified by:

createTransaction in class AbstractLogMinerEventProcessor<MemoryTransaction>

Parameters:

row - the event row, must not be null

Returns:

the implementation-specific Transaction instance

getTransactionCache

public LogMinerCache<String,MemoryTransaction> getTransactionCache()

Description copied from interface: CacheProvider

Get the transaction cache

• Key - The unique transaction id
• Value - The transaction instance

Returns:

the transaction cache, never null

getEventCache

public LogMinerCache<String,LogMinerEvent> getEventCache()

Description copied from interface: CacheProvider

Get the LogMiner events cache

• Key - The event id, in the format of transactionId-eventSequence
• Value - The raw LogMinerEvent object instance

Returns:

the evnts cache, never null

getSchemaChangesCache

public LogMinerCache<String,String> getSchemaChangesCache()

Description copied from interface: CacheProvider

Get the Schema Changes cache

• Key - The system change number of the schema change
• Value - The table the schema change is related to

Returns:

the schema changes cache, never null

getProcessedTransactionsCache

public LogMinerCache<String,String> getProcessedTransactionsCache()

Description copied from interface: CacheProvider

Get the processed transactions cache

• Key - The unique transaction id
• Value - The transaction's commit or rollback system change number

Returns:

the processed transactions cache, never null

close

public void close()
           throws Exception

Throws:

Exception