EmptyPubSubMessageHeaders (venice API)

java.lang.Object
- com.linkedin.venice.pubsub.api.PubSubMessageHeaders
- - com.linkedin.venice.pubsub.api.EmptyPubSubMessageHeaders

All Implemented Interfaces:

Measurable, java.lang.Iterable<PubSubMessageHeader>
```
public class EmptyPubSubMessageHeaders
extends PubSubMessageHeaders
```

Field Summary

Fields
Modifier and Type Field Description

static PubSubMessageHeaders SINGLETON
- Fields inherited from class com.linkedin.venice.pubsub.api.PubSubMessageHeaders
  VENICE_LEADER_COMPLETION_STATE_HEADER, VENICE_TRANSPORT_PROTOCOL_HEADER

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`PubSubMessageHeaders`	`add(PubSubMessageHeader header)`
`PubSubMessageHeaders`	`add(java.lang.String key, byte[] value)`
`int`	`getHeapSize()`
`boolean`	`isEmpty()`
`PubSubMessageHeaders`	`remove(java.lang.String key)`
`java.util.List<PubSubMessageHeader>`	`toList()`

Methods inherited from class com.linkedin.venice.pubsub.api.PubSubMessageHeaders
iterator

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

Methods inherited from interface java.lang.Iterable
forEach, spliterator

- Field Detail
  - SINGLETON
```
public static final PubSubMessageHeaders SINGLETON
```
- Method Detail
  - add
```
public PubSubMessageHeaders add(PubSubMessageHeader header)
```
    Overrides:
    
    add in class PubSubMessageHeaders
  - add
```
public PubSubMessageHeaders add(java.lang.String key,
                                byte[] value)
```
    Overrides:
    
    add in class PubSubMessageHeaders
  - remove
```
public PubSubMessageHeaders remove(java.lang.String key)
```
    Overrides:
    
    remove in class PubSubMessageHeaders
  - toList
```
public java.util.List<PubSubMessageHeader> toList()
```
    Overrides:
    
    toList in class PubSubMessageHeaders
    
    Returns:
    
    the headers as a List. Mutating this list will not affect the PubSubMessageHeaders. If no headers are present an empty list is returned.
  - isEmpty
```
public boolean isEmpty()
```
    Overrides:
    
    isEmpty in class PubSubMessageHeaders
  - getHeapSize
```
public int getHeapSize()
```
    Specified by:
    
    getHeapSize in interface Measurable
    
    Overrides:
    
    getHeapSize in class PubSubMessageHeaders