Class JwtCredentials (1.28.0) 

public class JwtCredentials extends Credentials implements JwtProvider

Credentials class for calling Google APIs using a JWT with custom claims.

Uses a JSON Web Token (JWT) directly in the request metadata to provide authorization.


 JwtClaims claims = JwtClaims.newBuilder()
     .setAudience("https://example.com/some-audience")
     .setIssuer("some-issuer@example.com")
     .setSubject("some-subject@example.com")
     .build();
 Credentials = JwtCredentials.newBuilder()
     .setPrivateKey(privateKey)
     .setPrivateKeyId("private-key-id")
     .setJwtClaims(claims)
     .build();

Inheritance

Object > Credentials > JwtCredentials

Implements

JwtProvider

Static Methods

newBuilder()

public static JwtCredentials.Builder newBuilder()
Returns
Type Description
JwtCredentials.Builder

Methods

equals(Object obj)

public boolean equals(Object obj)
Parameter
Name Description
obj Object
Returns
Type Description
boolean
Overrides

getAuthenticationType()

public String getAuthenticationType()

A constant string name describing the authentication technology.

E.g. “OAuth2”, “SSL”. For use by the transport layer to determine whether it supports the type of authentication in the case where Credentials#hasRequestMetadataOnly is false. Also serves as a debugging helper.

Returns
Type Description
String
Overrides

getRequestMetadata(URI uri)

public Map<String,List<String>> getRequestMetadata(URI uri)

Get the current request metadata in a blocking manner, refreshing tokens if required.

This should be called by the transport layer on each request, and the data should be populated in headers or other context. The operation can block and fail to complete and may do things such as refreshing access tokens.

The convention for handling binary data is for the key in the returned map to end with "-bin" and for the corresponding values to be base64 encoded.

Parameter
Name Description
uri URI
Returns
Type Description
Map<String,List<String>>
Overrides
Exceptions
Type Description
IOException

hasRequestMetadata()

public boolean hasRequestMetadata()

Whether the credentials have metadata entries that should be added to each request.

This should be called by the transport layer to see if Credentials#getRequestMetadata should be used for each request.

Returns
Type Description
boolean
Overrides

hasRequestMetadataOnly()

public boolean hasRequestMetadataOnly()

Indicates whether or not the Auth mechanism works purely by including request metadata.

This is meant for the transport layer. If this is true a transport does not need to take actions other than including the request metadata. If this is false, a transport must specifically know about the authentication technology to support it, and should fail to accept the credentials otherwise.

Returns
Type Description
boolean
Overrides

hashCode()

public int hashCode()
Returns
Type Description
int
Overrides

jwtWithClaims(JwtClaims newClaims)

public JwtCredentials jwtWithClaims(JwtClaims newClaims)

Returns a copy of these credentials with modified claims.

Parameter
Name Description
newClaims JwtClaims

new claims. Any unspecified claim fields default to the the current values.
Returns
Type Description
JwtCredentials

new credentials

refresh()

public void refresh()

Refresh the token by discarding the cached token and metadata and rebuilding a new one.

Overrides
Exceptions
Type Description
IOException