Package io.debezium.transforms

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

java.lang.Object

io.debezium.transforms.HeaderToValue<R>

All Implemented Interfaces:

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

public class HeaderToValue<R extends org.apache.kafka.connect.connector.ConnectRecord<R>>
extends Object
implements org.apache.kafka.connect.transforms.Transformation<R>

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static enum	HeaderToValue.Operation

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	CACHE_SIZE
private static final String	COPY_OPERATION
private List<String>	fields
static final String	FIELDS_CONF
static final Field	FIELDS_FIELD
private List<String>	headers
static final String	HEADERS_CONF
static final Field	HEADERS_FIELD
private final BoundedConcurrentHashMap<org.apache.kafka.connect.header.Headers,org.apache.kafka.connect.header.Headers>	headersUpdateCache
private static final org.slf4j.Logger	LOGGER
private static final String	MOVE_OPERATION
static final String	NESTING_SEPARATOR
private HeaderToValue.Operation	operation
static final String	OPERATION_CONF
static final Field	OPERATION_FIELD
static final String	ROOT_FIELD_NAME
private final BoundedConcurrentHashMap<org.apache.kafka.connect.data.Schema,org.apache.kafka.connect.data.Schema>	schemaUpdateCache

Constructor Summary

Constructors

Constructor	Description
HeaderToValue()

Method Summary

Modifier and Type	Method	Description
R	apply(R record)
private org.apache.kafka.connect.data.Schema	buildNewSchema(String fieldName, org.apache.kafka.connect.data.Schema oldSchema, Map<String,org.apache.kafka.connect.header.Header> headerToProcess, List<String> nestedFields, int level)
private org.apache.kafka.connect.data.Struct	buildUpdatedValue(String fieldName, org.apache.kafka.connect.data.Struct originalValue, Map<String,org.apache.kafka.connect.header.Header> headerToProcess, org.apache.kafka.connect.data.Schema updatedSchema, List<String> nestedFields, int level)
void	close()
org.apache.kafka.common.config.ConfigDef	config()
void	configure(Map<String,?> props)
private Optional<String>	getFieldName(String destinationFieldName, String fieldName, int level)
private String	headersToString(Map<?,?> map)
private static boolean	isChildrenOf(String fieldName, int level, String[] nestedNames)
private boolean	isContainedIn(String fieldName, List<String> nestedFields)
private static boolean	isRootField(String fieldName, String[] nestedNames)
private org.apache.kafka.connect.data.Schema	makeNewSchema(org.apache.kafka.connect.data.Schema oldSchema, Map<String,org.apache.kafka.connect.header.Header> headerToProcess)
private org.apache.kafka.connect.data.Struct	makeUpdatedValue(org.apache.kafka.connect.data.Struct originalValue, Map<String,org.apache.kafka.connect.header.Header> headerToProcess, org.apache.kafka.connect.data.Schema updatedSchema)
private org.apache.kafka.connect.header.Headers	removeHeaders(org.apache.kafka.connect.header.Headers originalHeaders)
private void	validateConfiguration()

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_CONF

public static final String FIELDS_CONF

See Also:

• Constant Field Values

HEADERS_CONF

public static final String HEADERS_CONF

See Also:

• Constant Field Values

OPERATION_CONF

public static final String OPERATION_CONF

See Also:

• Constant Field Values

MOVE_OPERATION

private static final String MOVE_OPERATION

See Also:

• Constant Field Values

COPY_OPERATION

private static final String COPY_OPERATION

See Also:

• Constant Field Values

CACHE_SIZE

private static final int CACHE_SIZE

See Also:

• Constant Field Values

NESTING_SEPARATOR

public static final String NESTING_SEPARATOR

See Also:

• Constant Field Values

ROOT_FIELD_NAME

public static final String ROOT_FIELD_NAME

See Also:

• Constant Field Values

HEADERS_FIELD

public static final Field HEADERS_FIELD

FIELDS_FIELD

public static final Field FIELDS_FIELD

OPERATION_FIELD

public static final Field OPERATION_FIELD

fields

private List<String> fields

headers

private List<String> headers

operation

private HeaderToValue.Operation operation

schemaUpdateCache

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

headersUpdateCache

private final BoundedConcurrentHashMap<org.apache.kafka.connect.header.Headers,org.apache.kafka.connect.header.Headers> headersUpdateCache

Constructor Details

HeaderToValue

public HeaderToValue()

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,?> props)

Specified by:

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

validateConfiguration

private void validateConfiguration()

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>>

removeHeaders

private org.apache.kafka.connect.header.Headers removeHeaders(org.apache.kafka.connect.header.Headers originalHeaders)

makeUpdatedValue

private org.apache.kafka.connect.data.Struct makeUpdatedValue(org.apache.kafka.connect.data.Struct originalValue,
 Map<String,org.apache.kafka.connect.header.Header> headerToProcess,
 org.apache.kafka.connect.data.Schema updatedSchema)

buildUpdatedValue

private org.apache.kafka.connect.data.Struct buildUpdatedValue(String fieldName,
 org.apache.kafka.connect.data.Struct originalValue,
 Map<String,org.apache.kafka.connect.header.Header> headerToProcess,
 org.apache.kafka.connect.data.Schema updatedSchema,
 List<String> nestedFields,
 int level)

isContainedIn

private boolean isContainedIn(String fieldName,
 List<String> nestedFields)

makeNewSchema

private org.apache.kafka.connect.data.Schema makeNewSchema(org.apache.kafka.connect.data.Schema oldSchema,
 Map<String,org.apache.kafka.connect.header.Header> headerToProcess)

buildNewSchema

private org.apache.kafka.connect.data.Schema buildNewSchema(String fieldName,
 org.apache.kafka.connect.data.Schema oldSchema,
 Map<String,org.apache.kafka.connect.header.Header> headerToProcess,
 List<String> nestedFields,
 int level)

getFieldName

private Optional<String> getFieldName(String destinationFieldName,
 String fieldName,
 int level)

isChildrenOf

private static boolean isChildrenOf(String fieldName,
 int level,
 String[] nestedNames)

isRootField

private static boolean isRootField(String fieldName,
 String[] nestedNames)

headersToString

private String headersToString(Map<?,?> map)

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>>