V4RequestSigner (AWS Java SDK :: HTTP Auth AWS 2.34.5 API)

All Known Implementing Classes:

DefaultV4RequestSigner
```
public interface V4RequestSigner
```
An interface which declares an algorithm that takes a request and a content-hash and signs the request according to the SigV4 process.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static V4RequestSigner`	`anonymous(V4Properties properties)`	Retrieve an implementation of a V4RequestSigner to handle the anonymous credentials case, where the request is not sigend at all.
`static V4RequestSigner`	`create(V4Properties properties, String contentHash)`	Retrieve an implementation of a V4RequestSigner, which signs the request, but does not add authentication to the request.
`static V4RequestSigner`	`header(V4Properties properties)`	Retrieve an implementation of a V4RequestSigner, which signs the request and adds authentication through headers.
`static V4RequestSigner`	`presigned(V4Properties properties, Duration expirationDuration)`	Retrieve an implementation of a V4RequestSigner, which signs the request and adds authentication through query parameters, which includes an expiration param, signalling how long a request signature is valid.
`static V4RequestSigner`	`query(V4Properties properties)`	Retrieve an implementation of a V4RequestSigner, which signs the request and adds authentication through query parameters.
`V4RequestSigningResult`	`sign(SdkHttpRequest.Builder requestBuilder)`	Given a request builder, sign the request and return a result containing the signed request and its properties.

- Method Detail
  - create
```
static V4RequestSigner create(V4Properties properties,
                              String contentHash)
```
    Retrieve an implementation of a V4RequestSigner, which signs the request, but does not add authentication to the request.
  - header
```
static V4RequestSigner header(V4Properties properties)
```
    Retrieve an implementation of a V4RequestSigner, which signs the request and adds authentication through headers.
  - query
```
static V4RequestSigner query(V4Properties properties)
```
    Retrieve an implementation of a V4RequestSigner, which signs the request and adds authentication through query parameters.
  - presigned
```
static V4RequestSigner presigned(V4Properties properties,
                                 Duration expirationDuration)
```
    Retrieve an implementation of a V4RequestSigner, which signs the request and adds authentication through query parameters, which includes an expiration param, signalling how long a request signature is valid.
  - anonymous
```
static V4RequestSigner anonymous(V4Properties properties)
```
    Retrieve an implementation of a V4RequestSigner to handle the anonymous credentials case, where the request is not sigend at all.
  - sign
```
V4RequestSigningResult sign(SdkHttpRequest.Builder requestBuilder)
```
    Given a request builder, sign the request and return a result containing the signed request and its properties.