Package io.debezium.pipeline.signal.channels

Class SourceSignalChannel

java.lang.Object

io.debezium.pipeline.signal.channels.SourceSignalChannel

All Implemented Interfaces:

SignalChannelReader

@NotThreadSafe
public class SourceSignalChannel
extends Object
implements SignalChannelReader

The class responsible for processing of signals delivered to Debezium via a dedicated signaling table. The processor supports a common set of signals that it can process and every connector can register its own additional signals. The signalling table must conform to the structure

• id STRING - the unique identifier of the signal sent, usually UUID, can be used for deduplication
• type STRING - the unique logical name of the code executing the signal
• data STRING - the data in JSON format that are passed to the signal code

Author:

Jiri Pechanec

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CHANNEL_NAME
CommonConnectorConfig	connectorConfig
private static final org.slf4j.Logger	LOGGER
static final Queue<SignalRecord>	SIGNALS

Constructor Summary

Constructors

Constructor	Description
SourceSignalChannel()

Method Summary

Modifier and Type	Method	Description
void	close()
void	init(CommonConnectorConfig connectorConfig)
String	name()
boolean	process(org.apache.kafka.connect.data.Struct value)	Used in streaming flow to add signals from signaling table
List<SignalRecord>	read()

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.debezium.pipeline.signal.channels.SignalChannelReader

reset

Field Details

LOGGER

private static final org.slf4j.Logger LOGGER

CHANNEL_NAME

public static final String CHANNEL_NAME

See Also:

• Constant Field Values

SIGNALS

public static final Queue<SignalRecord> SIGNALS

connectorConfig

public CommonConnectorConfig connectorConfig

Constructor Details

SourceSignalChannel

public SourceSignalChannel()

Method Details

name

public String name()

Specified by:

name in interface SignalChannelReader

init

public void init(CommonConnectorConfig connectorConfig)

Specified by:

init in interface SignalChannelReader

read

public List<SignalRecord> read()

Specified by:

read in interface SignalChannelReader

close

public void close()

Specified by:

close in interface SignalChannelReader

process

public boolean process(org.apache.kafka.connect.data.Struct value)
                throws InterruptedException

Used in streaming flow to add signals from signaling table

Parameters:

value - Envelope with change from signaling table

Returns:

true if the signal was processed

Throws:

InterruptedException