HeaderEnricher (Spring Kafka 2.6.0 API)

java.lang.Object
- org.springframework.kafka.streams.HeaderEnricher<K,V>

Type Parameters:

K - the key type.

V - the value type.

All Implemented Interfaces:

org.apache.kafka.streams.kstream.Transformer<K,V,org.apache.kafka.streams.KeyValue<K,V>>
```
public class HeaderEnricher<K,V>
extends java.lang.Object
implements org.apache.kafka.streams.kstream.Transformer<K,V,org.apache.kafka.streams.KeyValue<K,V>>
```
Manipulate the headers.

Since:

2.3

Author:

Gary Russell

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class HeaderEnricher.Container<K,V>
Container object for SpEL evaluation.

Constructor Summary

Constructors
Constructor Description

HeaderEnricher(java.util.Map<java.lang.String,org.springframework.expression.Expression> headerExpressions)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`
`void`	`init(org.apache.kafka.streams.processor.ProcessorContext context)`
`org.apache.kafka.streams.KeyValue<K,V>`	`transform(K key, V value)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - HeaderEnricher
```
public HeaderEnricher(java.util.Map<java.lang.String,org.springframework.expression.Expression> headerExpressions)
```
- Method Detail
  - init
```
public void init(org.apache.kafka.streams.processor.ProcessorContext context)
```
    Specified by:
    
    init in interface org.apache.kafka.streams.kstream.Transformer<K,V,org.apache.kafka.streams.KeyValue<K,V>>
  - transform
```
public org.apache.kafka.streams.KeyValue<K,V> transform(K key,
                                                              V value)
```
    Specified by:
    
    transform in interface org.apache.kafka.streams.kstream.Transformer<K,V,org.apache.kafka.streams.KeyValue<K,V>>
  - close
```
public void close()
```
    Specified by:
    
    close in interface org.apache.kafka.streams.kstream.Transformer<K,V,org.apache.kafka.streams.KeyValue<K,V>>