org.apache.flink.runtime.security.token

接口 DelegationTokenProvider

所有已知实现类:

HadoopFSDelegationTokenProvider

@Experimental
public interface DelegationTokenProvider

Delegation token provider API. Instances of token providers are loaded by DelegationTokenManager through service loader.

方法概要

限定符和类型	方法和说明
boolean	delegationTokensRequired() Return whether delegation tokens are required for this service.
void	init(org.apache.flink.configuration.Configuration configuration) Called by DelegationTokenManager to initialize provider after construction.
Optional<Long>	obtainDelegationTokens(org.apache.hadoop.security.Credentials credentials) Obtain delegation tokens for this service.
String	serviceName() Name of the service to provide delegation tokens.

方法详细资料

serviceName

String serviceName()

Name of the service to provide delegation tokens. This name should be unique.

init

void init(org.apache.flink.configuration.Configuration configuration)
   throws Exception

Called by DelegationTokenManager to initialize provider after construction.

参数:

configuration - Configuration to initialize the provider.

抛出:

Exception

delegationTokensRequired

boolean delegationTokensRequired()
                          throws Exception

Return whether delegation tokens are required for this service.

返回:

true if delegation tokens are required.

抛出:

Exception

obtainDelegationTokens

Optional<Long> obtainDelegationTokens(org.apache.hadoop.security.Credentials credentials)
                               throws Exception

Obtain delegation tokens for this service.

参数:

credentials - Credentials to add tokens and security keys to.

返回:

If the returned tokens are renewable and can be renewed, return the time of the next renewal, otherwise `Optional.empty()` should be returned.

抛出:

Exception