org.apache.storm.hdfs.common.security

Class AutoHDFS

java.lang.Object

org.apache.storm.hdfs.common.security.AutoHDFS

All Implemented Interfaces:

Shutdownable, IAutoCredentials, ICredentialsRenewer, INimbusCredentialPlugin

public class AutoHDFS
extends Object
implements IAutoCredentials, ICredentialsRenewer, INimbusCredentialPlugin

Automatically get HDFS delegation tokens and push it to user’s topology. The class assumes that HDFS configuration files are in your class path.

Field Summary

Fields

Modifier and Type	Field and Description
static String	HDFS_CREDENTIALS
static String	TOPOLOGY_HDFS_URI

Constructor Summary

Constructors

Constructor and Description
AutoHDFS()

Method Summary

Modifier and Type	Method and Description
void	addTokensToUGI(Subject subject)
protected String	getCredentialKey()
protected org.apache.hadoop.security.Credentials	getCredentials(Map<String,String> credentials)
protected byte[]	getHadoopCredentials(Map conf, String topologyOwnerPrincipal)
static void	main(String[] args)
void	populateCredentials(Map<String,String> credentials)
void	populateCredentials(Map<String,String> credentials, Map topoConf)
void	populateCredentials(Map<String,String> credentials, Map<String,Object> topoConf, String topologyOwnerPrincipal)
void	populateSubject(Subject subject, Map<String,String> credentials)
void	prepare(Map conf)
void	renew(Map<String,String> credentials, Map topologyConf)
void	renew(Map<String,String> credentials, Map<String,Object> topologyConf, String topologyOwnerPrincipal)
void	shutdown()
void	updateSubject(Subject subject, Map<String,String> credentials)

Methods inherited from class java.lang.Object

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

Field Detail

HDFS_CREDENTIALS

public static final String HDFS_CREDENTIALS

See Also:

Constant Field Values

TOPOLOGY_HDFS_URI

public static final String TOPOLOGY_HDFS_URI

See Also:

Constant Field Values

Constructor Detail

AutoHDFS

public AutoHDFS()

Method Detail

prepare

public void prepare(Map conf)

Specified by:

prepare in interface IAutoCredentials

Specified by:

prepare in interface ICredentialsRenewer

Specified by:

prepare in interface INimbusCredentialPlugin

shutdown

public void shutdown()

Specified by:

shutdown in interface Shutdownable

populateCredentials

public void populateCredentials(Map<String,String> credentials,
                                Map<String,Object> topoConf,
                                String topologyOwnerPrincipal)

Specified by:

populateCredentials in interface INimbusCredentialPlugin

populateCredentials

public void populateCredentials(Map<String,String> credentials)

Specified by:

populateCredentials in interface IAutoCredentials

getCredentials

protected org.apache.hadoop.security.Credentials getCredentials(Map<String,String> credentials)

Parameters:

credentials - map with creds.

Returns:

instance of org.apache.hadoop.security.Credentials. this class’s populateCredentials must have been called before.

updateSubject

public void updateSubject(Subject subject,
                          Map<String,String> credentials)

Specified by:

updateSubject in interface IAutoCredentials

populateSubject

public void populateSubject(Subject subject,
                            Map<String,String> credentials)

Specified by:

populateSubject in interface IAutoCredentials

addTokensToUGI

public void addTokensToUGI(Subject subject)

renew

public void renew(Map<String,String> credentials,
                  Map<String,Object> topologyConf,
                  String topologyOwnerPrincipal)

Specified by:

renew in interface ICredentialsRenewer

getHadoopCredentials

protected byte[] getHadoopCredentials(Map conf,
                                      String topologyOwnerPrincipal)

getCredentialKey

protected String getCredentialKey()

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception

populateCredentials

public void populateCredentials(Map<String,String> credentials,
                                Map topoConf)

Specified by:

populateCredentials in interface INimbusCredentialPlugin

renew

public void renew(Map<String,String> credentials,
                  Map topologyConf)

Specified by:

renew in interface ICredentialsRenewer