Package io.debezium.connector.postgresql.transforms

Class DecodeLogicalDecodingMessageContent<R extends org.apache.kafka.connect.connector.ConnectRecord<R>>

java.lang.Object

io.debezium.connector.postgresql.transforms.DecodeLogicalDecodingMessageContent<R>

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.kafka.common.Configurable, org.apache.kafka.connect.components.Versioned, org.apache.kafka.connect.transforms.Transformation<R>

public class DecodeLogicalDecodingMessageContent<R extends org.apache.kafka.connect.connector.ConnectRecord<R>>
extends Object
implements org.apache.kafka.connect.transforms.Transformation<R>, org.apache.kafka.connect.components.Versioned

The transform converts binary content of a logical decoding message to a structured form. One of the possible usages is to apply the transform before EventRouter so that the transform will produce a record suitable for the Outbox SMT.

Author:

Roman Kudryashov

Field Summary

Fields

Modifier and Type	Field	Description
static final Field	FIELDS_NULL_INCLUDE
private JsonSchemaData	jsonSchemaData
private static final org.slf4j.Logger	LOGGER
private BoundedConcurrentHashMap<org.apache.kafka.connect.data.Schema,org.apache.kafka.connect.data.Schema>	logicalDecodingMessageContentSchemaCache
private com.fasterxml.jackson.databind.ObjectMapper	objectMapper

Constructor Summary

Constructors

Constructor	Description
DecodeLogicalDecodingMessageContent()

Method Summary

Modifier and Type	Method	Description
R	apply(R record)
void	close()
org.apache.kafka.common.config.ConfigDef	config()
void	configure(Map<String,?> configs)
private org.apache.kafka.connect.data.Struct	convertLogicalDecodingMessageContentBytesToStruct(byte[] logicalDecodingMessageContent)
private org.apache.kafka.connect.data.Struct	getLogicalDecodingMessageContent(org.apache.kafka.connect.data.Struct valueStruct)
private org.apache.kafka.connect.data.SchemaBuilder	getSchemaBuilder(org.apache.kafka.connect.data.Schema logicalDecodingMessageContentSchema, org.apache.kafka.connect.data.Schema debeziumEventSchema)
private org.apache.kafka.connect.data.Struct	getUpdatedValue(org.apache.kafka.connect.data.Schema updatedValueSchema, org.apache.kafka.connect.data.Struct originalValue, org.apache.kafka.connect.data.Struct logicalDecodingMessageContent)
private org.apache.kafka.connect.data.Schema	getUpdatedValueSchema(org.apache.kafka.connect.data.Schema logicalDecodingMessageContentSchema, org.apache.kafka.connect.data.Schema debeziumEventSchema)
private com.fasterxml.jackson.databind.JsonNode	parseLogicalDecodingMessageContentJsonString(String logicalDecodingMessageContentJsonString)
private R	removeLogicalDecodingMessageContentField(R record)
String	version()

Methods inherited from class java.lang.Object

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

Field Details

LOGGER

private static final org.slf4j.Logger LOGGER

FIELDS_NULL_INCLUDE

public static final Field FIELDS_NULL_INCLUDE

objectMapper

private com.fasterxml.jackson.databind.ObjectMapper objectMapper

jsonSchemaData

private JsonSchemaData jsonSchemaData

logicalDecodingMessageContentSchemaCache

private BoundedConcurrentHashMap<org.apache.kafka.connect.data.Schema,org.apache.kafka.connect.data.Schema> logicalDecodingMessageContentSchemaCache

Constructor Details

DecodeLogicalDecodingMessageContent

public DecodeLogicalDecodingMessageContent()

Method Details

config

public org.apache.kafka.common.config.ConfigDef config()

Specified by:

config in interface org.apache.kafka.connect.transforms.Transformation<R extends org.apache.kafka.connect.connector.ConnectRecord<R>>

configure

public void configure(Map<String,?> configs)

Specified by:

configure in interface org.apache.kafka.common.Configurable

apply

public R apply(R record)

Specified by:

apply in interface org.apache.kafka.connect.transforms.Transformation<R extends org.apache.kafka.connect.connector.ConnectRecord<R>>

getLogicalDecodingMessageContent

private org.apache.kafka.connect.data.Struct getLogicalDecodingMessageContent(org.apache.kafka.connect.data.Struct valueStruct)

convertLogicalDecodingMessageContentBytesToStruct

private org.apache.kafka.connect.data.Struct convertLogicalDecodingMessageContentBytesToStruct(byte[] logicalDecodingMessageContent)

parseLogicalDecodingMessageContentJsonString

private com.fasterxml.jackson.databind.JsonNode parseLogicalDecodingMessageContentJsonString(String logicalDecodingMessageContentJsonString)

removeLogicalDecodingMessageContentField

private R removeLogicalDecodingMessageContentField(R record)

getUpdatedValueSchema

private org.apache.kafka.connect.data.Schema getUpdatedValueSchema(org.apache.kafka.connect.data.Schema logicalDecodingMessageContentSchema,
 org.apache.kafka.connect.data.Schema debeziumEventSchema)

getSchemaBuilder

private org.apache.kafka.connect.data.SchemaBuilder getSchemaBuilder(org.apache.kafka.connect.data.Schema logicalDecodingMessageContentSchema,
 org.apache.kafka.connect.data.Schema debeziumEventSchema)

getUpdatedValue

private org.apache.kafka.connect.data.Struct getUpdatedValue(org.apache.kafka.connect.data.Schema updatedValueSchema,
 org.apache.kafka.connect.data.Struct originalValue,
 org.apache.kafka.connect.data.Struct logicalDecodingMessageContent)

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface org.apache.kafka.connect.transforms.Transformation<R extends org.apache.kafka.connect.connector.ConnectRecord<R>>

version

public String version()

Specified by:

version in interface org.apache.kafka.connect.components.Versioned