org.apache.hadoop.hdfs.web.oauth2

Class CredentialBasedAccessTokenProvider

java.lang.Object

org.apache.hadoop.hdfs.web.oauth2.AccessTokenProvider

org.apache.hadoop.hdfs.web.oauth2.CredentialBasedAccessTokenProvider

All Implemented Interfaces:

Configurable

Direct Known Subclasses:

ConfCredentialBasedAccessTokenProvider

@InterfaceAudience.Public
 @InterfaceStability.Evolving
public abstract class CredentialBasedAccessTokenProvider
extends AccessTokenProvider

Obtain an access token via the credential-based OAuth2 workflow. This abstract class requires only that implementations provide the credential, which the class then uses to obtain a refresh token.

Field Summary

Fields

Modifier and Type	Field and Description
static String	OAUTH_CREDENTIAL_KEY

Method Summary

Modifier and Type	Method and Description
String	getAccessToken() Obtain the access token that should be added to http connection's header.
abstract String	getCredential()
void	setConf(Configuration conf) Set the conf.

Methods inherited from class org.apache.hadoop.hdfs.web.oauth2.AccessTokenProvider

getConf

Methods inherited from class java.lang.Object

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

Field Detail

OAUTH_CREDENTIAL_KEY

public static final String OAUTH_CREDENTIAL_KEY

See Also:

Constant Field Values

Method Detail

getCredential

public abstract String getCredential()

setConf

public void setConf(Configuration conf)

Description copied from class: AccessTokenProvider

Set the conf.

Specified by:

setConf in interface Configurable

Overrides:

setConf in class AccessTokenProvider

Parameters:

conf - New configuration.

getAccessToken

public String getAccessToken()
                      throws IOException

Description copied from class: AccessTokenProvider

Obtain the access token that should be added to http connection's header. Will be called for each connection, so implementations should be performant. Implementations are responsible for any refreshing of the token.

Specified by:

getAccessToken in class AccessTokenProvider

Returns:

Access token to be added to connection header.

Throws:

IOException