Package io.debezium.pipeline.signal.channels

Class FileSignalChannel

java.lang.Object

io.debezium.pipeline.signal.channels.FileSignalChannel

All Implemented Interfaces:

SignalChannelReader

public class FileSignalChannel
extends Object
implements SignalChannelReader

The class responsible for processing of signals delivered to Debezium via a file. The signal message must have the following structure, formatted as json line:

• 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:

Ismail Simsek

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CHANNEL_NAME
static final String	CONFIGURATION_FIELD_PREFIX_STRING
private static final org.slf4j.Logger	LOGGER
(package private) com.fasterxml.jackson.databind.ObjectMapper	mapper
static final Field	SIGNAL_FILE
private File	signalFile

Constructor Summary

Constructors

Constructor	Description
FileSignalChannel()

Method Summary

Modifier and Type	Method	Description
void	close()
void	init(CommonConnectorConfig connectorConfig)
String	name()
List<SignalRecord>	read()
private SignalRecord	readSignalString(String signalLine)
void	reset(Object reference)

Methods inherited from class java.lang.Object

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

Field Details

CONFIGURATION_FIELD_PREFIX_STRING

public static final String CONFIGURATION_FIELD_PREFIX_STRING

See Also:

• Constant Field Values

SIGNAL_FILE

public static final Field SIGNAL_FILE

CHANNEL_NAME

public static final String CHANNEL_NAME

See Also:

• Constant Field Values

LOGGER

private static final org.slf4j.Logger LOGGER

mapper

com.fasterxml.jackson.databind.ObjectMapper mapper

signalFile

private File signalFile

Constructor Details

FileSignalChannel

public FileSignalChannel()

Method Details

name

public String name()

Specified by:

name in interface SignalChannelReader

init

public void init(CommonConnectorConfig connectorConfig)

Specified by:

init in interface SignalChannelReader

reset

public void reset(Object reference)

Specified by:

reset in interface SignalChannelReader

read

public List<SignalRecord> read()

Specified by:

read in interface SignalChannelReader

readSignalString

private SignalRecord readSignalString(String signalLine)
                               throws com.fasterxml.jackson.core.JsonProcessingException

Throws:

com.fasterxml.jackson.core.JsonProcessingException

close

public void close()

Specified by:

close in interface SignalChannelReader