Request (Brave 5.13.9 API)

java.lang.Object
- brave.Request

```
public abstract class Request
extends Object
```
Abstract request type used for parsing and sampling. When implemented, it will be the parameter of SamplerFunction or TraceContext.Extractor.
No extensions outside Brave
While this is an abstract type, it should not be subclassed outside the Brave repository. In other words, subtypes are sealed within this source tree.

Since:

5.9

See Also:

SamplerFunction, TraceContext.Extractor, TraceContext.Injector, Response

Constructor Summary

Constructors
Modifier Constructor Description

protected Request()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract Span.Kind`	`spanKind()`	The remote `Span.Kind` describing the direction and type of the request.
`String`	`toString()`
`abstract Object`	`unwrap()`	Returns the underlying request object or `null` if there is none.

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

- Constructor Detail
  - Request
```
protected Request()
```
- Method Detail
  - spanKind
```
public abstract Span.Kind spanKind()
```
    The remote Span.Kind describing the direction and type of the request.
  - unwrap
```
public abstract Object unwrap()
```
    Returns the underlying request object or null if there is none. Here are some request objects: org.apache.http.HttpRequest, org.apache.dubbo.rpc.Invocation, org.apache.kafka.clients.consumer.ConsumerRecord.
    Note: Some implementations are composed of multiple types, such as a request and a socket address of the client. Moreover, an implementation may change the type returned due to refactoring. Unless you control the implementation, cast carefully (ex using instanceof) instead of presuming a specific type will always be returned.
    
    Since:
    
    5.9
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object