Package io.debezium.schema

Class DefaultRegexTopicNamingStrategy

java.lang.Object

io.debezium.schema.AbstractTopicNamingStrategy<DataCollectionId>

io.debezium.schema.DefaultRegexTopicNamingStrategy

All Implemented Interfaces:

TopicNamingStrategy<DataCollectionId>

@Incubating
public class DefaultRegexTopicNamingStrategy
extends AbstractTopicNamingStrategy<DataCollectionId>

Implement a regex expression strategy to determine data event topic names using DataCollectionId.databaseParts().

Author:

Harvey Yue

Field Summary

Fields

Modifier and Type	Field	Description
private static final org.slf4j.Logger	LOGGER
static final Field	TOPIC_REGEX
static final Field	TOPIC_REPLACEMENT
private Pattern	topicRegex
private String	topicReplacement

Fields inherited from class io.debezium.schema.AbstractTopicNamingStrategy

DEFAULT_HEARTBEAT_TOPIC_PREFIX, DEFAULT_TRANSACTION_TOPIC, delimiter, heartbeatPrefix, LOGIC_NAME_PLACEHOLDER, logicalName, prefix, TOPIC_CACHE_SIZE, TOPIC_DELIMITER, TOPIC_HEARTBEAT_PREFIX, TOPIC_NAME_PATTERN, TOPIC_PREFIX, TOPIC_TRANSACTION, topicNames, transaction

Fields inherited from interface io.debezium.spi.topic.TopicNamingStrategy

REPLACEMENT_CHAR

Constructor Summary

Constructors

Constructor	Description
DefaultRegexTopicNamingStrategy(Properties props)

Method Summary

Modifier and Type	Method	Description
void	configure(Properties props)
String	dataChangeTopic(DataCollectionId id)
private String	determineNewTopic(DataCollectionId tableId, String oldTopic)	Determine the new topic name.
private static int	validateTopicReplacement(Configuration config, Field field, Field.ValidationOutput problems)	If TOPIC_REGEX has a value that is really a regex, then the TOPIC_REPLACEMENT must be a non-empty value.

Methods inherited from class io.debezium.schema.AbstractTopicNamingStrategy

heartbeatTopic, mkString, schemaChangeTopic, transactionTopic, validateTopicName

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.debezium.spi.topic.TopicNamingStrategy

sanitizedTopicName

Field Details

LOGGER

private static final org.slf4j.Logger LOGGER

TOPIC_REGEX

public static final Field TOPIC_REGEX

TOPIC_REPLACEMENT

public static final Field TOPIC_REPLACEMENT

topicRegex

private Pattern topicRegex

topicReplacement

private String topicReplacement

Constructor Details

DefaultRegexTopicNamingStrategy

public DefaultRegexTopicNamingStrategy(Properties props)

Method Details

validateTopicReplacement

private static int validateTopicReplacement(Configuration config,
 Field field,
 Field.ValidationOutput problems)

If TOPIC_REGEX has a value that is really a regex, then the TOPIC_REPLACEMENT must be a non-empty value.

configure

public void configure(Properties props)

Specified by:

configure in interface TopicNamingStrategy<DataCollectionId>

Overrides:

configure in class AbstractTopicNamingStrategy<DataCollectionId>

dataChangeTopic

public String dataChangeTopic(DataCollectionId id)

Specified by:

dataChangeTopic in interface TopicNamingStrategy<DataCollectionId>

Specified by:

dataChangeTopic in class AbstractTopicNamingStrategy<DataCollectionId>

determineNewTopic

private String determineNewTopic(DataCollectionId tableId,
 String oldTopic)

Determine the new topic name.

Parameters:

tableId - the table id

oldTopic - the name of the old topic

Returns:

return the new topic name, if the regex applies. Otherwise, return original topic.