io.debezium.connector.sqlserver

Class SqlServerStreamingChangeEventSource

java.lang.Object

io.debezium.connector.sqlserver.SqlServerStreamingChangeEventSource

All Implemented Interfaces:

ChangeEventSource, StreamingChangeEventSource

public class SqlServerStreamingChangeEventSource
extends Object
implements StreamingChangeEventSource

A StreamingChangeEventSource based on SQL Server change data capture functionality. A main polls database DDL change and change data tables and turns them into change events.

Author:

Jiri Pechanec

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	SqlServerStreamingChangeEventSource.ChangeTablePointer The logical representation of a position for the change in the transaction log.

Nested classes/interfaces inherited from interface io.debezium.pipeline.source.spi.ChangeEventSource

ChangeEventSource.ChangeEventSourceContext

Field Summary

Fields

Modifier and Type	Field and Description
private Clock	clock
private static int	COL_COMMIT_LSN
private static int	COL_DATA
private static int	COL_OPERATION
private static int	COL_ROW_LSN
private SqlServerConnection	connection
private SqlServerConnectorConfig	connectorConfig
private EventDispatcher<TableId>	dispatcher
private ErrorHandler	errorHandler
private static org.slf4j.Logger	LOGGER
private static Pattern	MISSING_CDC_FUNCTION_CHANGES_ERROR
private SqlServerOffsetContext	offsetContext
private Duration	pollInterval
private SqlServerDatabaseSchema	schema

Constructor Summary

Constructors

Constructor and Description
SqlServerStreamingChangeEventSource(SqlServerConnectorConfig connectorConfig, SqlServerOffsetContext offsetContext, SqlServerConnection connection, EventDispatcher<TableId> dispatcher, ErrorHandler errorHandler, Clock clock, SqlServerDatabaseSchema schema)

Method Summary

Modifier and Type	Method and Description
void	commitOffset(Map<String,?> offset)
void	execute(ChangeEventSource.ChangeEventSourceContext context)
private ChangeTable[]	getCdcTablesToQuery()
private void	migrateTable(Queue<ChangeTable> schemaChangeCheckpoints)
private ChangeTable[]	processErrorFromChangeTableQuery(SQLException exception, ChangeTable[] currentChangeTables)

Methods inherited from class java.lang.Object

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

Field Detail

COL_COMMIT_LSN

private static final int COL_COMMIT_LSN

See Also:

Constant Field Values

COL_ROW_LSN

private static final int COL_ROW_LSN

See Also:

Constant Field Values

COL_OPERATION

private static final int COL_OPERATION

See Also:

Constant Field Values

COL_DATA

private static final int COL_DATA

See Also:

Constant Field Values

MISSING_CDC_FUNCTION_CHANGES_ERROR

private static final Pattern MISSING_CDC_FUNCTION_CHANGES_ERROR

LOGGER

private static final org.slf4j.Logger LOGGER

connection

private final SqlServerConnection connection

dispatcher

private final EventDispatcher<TableId> dispatcher

errorHandler

private final ErrorHandler errorHandler

clock

private final Clock clock

schema

private final SqlServerDatabaseSchema schema

offsetContext

private final SqlServerOffsetContext offsetContext

pollInterval

private final Duration pollInterval

connectorConfig

private final SqlServerConnectorConfig connectorConfig

Constructor Detail

SqlServerStreamingChangeEventSource

public SqlServerStreamingChangeEventSource(SqlServerConnectorConfig connectorConfig,
                                           SqlServerOffsetContext offsetContext,
                                           SqlServerConnection connection,
                                           EventDispatcher<TableId> dispatcher,
                                           ErrorHandler errorHandler,
                                           Clock clock,
                                           SqlServerDatabaseSchema schema)

Method Detail

execute

public void execute(ChangeEventSource.ChangeEventSourceContext context)
             throws InterruptedException

Specified by:

execute in interface StreamingChangeEventSource

Throws:

InterruptedException

migrateTable

private void migrateTable(Queue<ChangeTable> schemaChangeCheckpoints)
                   throws InterruptedException,
                          SQLException

Throws:

InterruptedException

SQLException

processErrorFromChangeTableQuery

private ChangeTable[] processErrorFromChangeTableQuery(SQLException exception,
                                                       ChangeTable[] currentChangeTables)
                                                throws Exception

Throws:

Exception

getCdcTablesToQuery

private ChangeTable[] getCdcTablesToQuery()
                                   throws SQLException,
                                          InterruptedException

Throws:

SQLException

InterruptedException

commitOffset

public void commitOffset(Map<String,?> offset)

Specified by:

commitOffset in interface StreamingChangeEventSource