Package software.amazon.awssdk.http.auth.aws.internal.signer

Class V4CanonicalRequest

java.lang.Object

software.amazon.awssdk.http.auth.aws.internal.signer.V4CanonicalRequest

@Immutable
public final class V4CanonicalRequest
extends Object

A class that represents a canonical request in AWS, as documented:

https://docs.aws.amazon.com/IAM/latest/UserGuide/create-signed-request.html#create-canonical-request

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	V4CanonicalRequest.Options	A class for representing options used when creating a V4CanonicalRequest

Constructor Summary

Constructors

Constructor	Description
V4CanonicalRequest(SdkHttpRequest request, String contentHash, V4CanonicalRequest.Options options)	Create a canonical request.

Method Summary

Modifier and Type	Method	Description
static List<Pair<String,List<String>>>	getCanonicalHeaders(Map<String,List<String>> headers)	Get the list of headers that are to be signed.
static List<Pair<String,List<String>>>	getCanonicalHeaders(SdkHttpRequest request)	Get the list of headers that are to be signed.
static String	getCanonicalHeadersString(List<Pair<String,List<String>>> canonicalHeaders)	Get the string representing the headers that will be signed and their values.
String	getCanonicalRequestString()	Get the canonical request string.
String	getSignedHeadersString()	Get the string representing which headers are part of the signing process.
static String	getSignedHeadersString(List<Pair<String,List<String>>> canonicalHeaders)	Get the string representing which headers are part of the signing process.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

V4CanonicalRequest

public V4CanonicalRequest(SdkHttpRequest request,
 String contentHash,
 V4CanonicalRequest.Options options)

Create a canonical request.

Each parameter of a canonical request is set upon creation of this object.

To get such a parameter (i.e. the canonical request string), simply call the getter for that parameter (i.e. getCanonicalRequestString())

Method Details

getSignedHeadersString

public String getSignedHeadersString()

Get the string representing which headers are part of the signing process. Header names are separated by a semicolon.

getCanonicalRequestString

public String getCanonicalRequestString()

Get the canonical request string.

getCanonicalHeaders

public static List<Pair<String,List<String>>> getCanonicalHeaders(SdkHttpRequest request)

Get the list of headers that are to be signed.

If calling from a site with the request object handy, this method should be used instead of passing the headers themselves, as doing so creates a redundant copy.

getCanonicalHeaders

public static List<Pair<String,List<String>>> getCanonicalHeaders(Map<String,List<String>> headers)

Get the list of headers that are to be signed. The supplied map of headers is expected to be sorted case-insensitively.

getCanonicalHeadersString

public static String getCanonicalHeadersString(List<Pair<String,List<String>>> canonicalHeaders)

Get the string representing the headers that will be signed and their values. The input list is expected to be sorted case-insensitively.

The output string will have header names as lower-case, sorted in alphabetical order, and followed by a colon.

Values are trimmed of any leading/trailing spaces, sequential spaces are converted to single space, and multiple values are comma separated.

Each header-value pair is separated by a newline.

getSignedHeadersString

public static String getSignedHeadersString(List<Pair<String,List<String>>> canonicalHeaders)

Get the string representing which headers are part of the signing process. Header names are separated by a semicolon.