Package io.debezium.connector.cassandra

Class SchemaHolder

java.lang.Object

io.debezium.connector.cassandra.SchemaHolder

public class SchemaHolder
extends Object

Listening to schema changes in Cassandra DB and caches the key and value schema for all CDC-enabled tables. This cache gets updated whenever there's a schema change in Cassandra DB

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) class	SchemaHolder.CassandraSchemaChangeListener

Field Summary

Fields

Modifier and Type	Field	Description
private CassandraClient	cassandraClient
private String	kafkaTopicPrefix
private static org.slf4j.Logger	LOGGER
private com.datastax.driver.core.SchemaChangeListener	schemaChangeListener
private io.debezium.connector.SourceInfoStructMaker<SourceInfo>	sourceInfoStructMaker
private ConcurrentMap<KeyspaceTable,KeyValueSchema>	tableToKVSchemaMap

Constructor Summary

Constructors

Constructor	Description
SchemaHolder(CassandraClient cassandraClient, String kafkaTopicPrefix, io.debezium.connector.SourceInfoStructMaker<SourceInfo> sourceInfoStructMaker)

Method Summary

Modifier and Type	Method	Description
private void	addOrUpdateTableSchema(KeyspaceTable kst, KeyValueSchema kvs)
void	close()
Set<com.datastax.driver.core.TableMetadata>	getCdcEnabledTableMetadataSet()
KeyValueSchema	getKeyValueSchema(KeyspaceTable kst)
private void	initialize()
private void	removeTableSchema(KeyspaceTable kst)

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

private static final org.slf4j.Logger LOGGER

tableToKVSchemaMap

private final ConcurrentMap<KeyspaceTable,KeyValueSchema> tableToKVSchemaMap

kafkaTopicPrefix

private final String kafkaTopicPrefix

sourceInfoStructMaker

private final io.debezium.connector.SourceInfoStructMaker<SourceInfo> sourceInfoStructMaker

cassandraClient

private final CassandraClient cassandraClient

schemaChangeListener

private final com.datastax.driver.core.SchemaChangeListener schemaChangeListener

Constructor Detail

SchemaHolder

public SchemaHolder(CassandraClient cassandraClient,
                    String kafkaTopicPrefix,
                    io.debezium.connector.SourceInfoStructMaker<SourceInfo> sourceInfoStructMaker)

Method Detail

initialize

private void initialize()

close

public void close()

getKeyValueSchema

public KeyValueSchema getKeyValueSchema(KeyspaceTable kst)

getCdcEnabledTableMetadataSet

public Set<com.datastax.driver.core.TableMetadata> getCdcEnabledTableMetadataSet()

removeTableSchema

private void removeTableSchema(KeyspaceTable kst)

addOrUpdateTableSchema

private void addOrUpdateTableSchema(KeyspaceTable kst,
                                    KeyValueSchema kvs)