org.apache.hadoop.yarn.security
Class AMRMTokenIdentifier

java.lang.Object
  org.apache.hadoop.security.token.TokenIdentifier
      org.apache.hadoop.yarn.security.AMRMTokenIdentifier

All Implemented Interfaces:

Writable

@InterfaceAudience.Public
@InterfaceStability.Evolving
public class AMRMTokenIdentifier
extends org.apache.hadoop.security.token.TokenIdentifier

AMRMTokenIdentifier is the TokenIdentifier to be used by ApplicationMasters to authenticate to the ResourceManager.

Field Summary

static Text

KIND_NAME

Constructor Summary

AMRMTokenIdentifier()

AMRMTokenIdentifier(ApplicationAttemptId appAttemptId)

Method Summary

Text	getKind() Get the token kind
org.apache.hadoop.security.UserGroupInformation	getUser() Get the Ugi with the username encoded in the token identifier
void	readFields(DataInput in) Deserialize the fields of this object from in.
void	write(DataOutput out) Serialize the fields of this object to out.

Methods inherited from class org.apache.hadoop.security.token.TokenIdentifier

getBytes, getTrackingId

Methods inherited from class java.lang.Object

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

Field Detail

KIND_NAME

public static final Text KIND_NAME

Constructor Detail

AMRMTokenIdentifier

public AMRMTokenIdentifier()

AMRMTokenIdentifier

public AMRMTokenIdentifier(ApplicationAttemptId appAttemptId)

Method Detail

write

public void write(DataOutput out)
           throws IOException

Description copied from interface: Writable

Serialize the fields of this object to out.

Parameters:

out - DataOuput to serialize this object into.

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Description copied from interface: Writable

Deserialize the fields of this object from in.

For efficiency, implementations should attempt to re-use storage in the existing object where possible.

Parameters:

in - DataInput to deseriablize this object from.

Throws:

IOException

getKind

public Text getKind()

Description copied from class: org.apache.hadoop.security.token.TokenIdentifier

Get the token kind

Specified by:

getKind in class org.apache.hadoop.security.token.TokenIdentifier

Returns:

the kind of the token

getUser

public org.apache.hadoop.security.UserGroupInformation getUser()

Description copied from class: org.apache.hadoop.security.token.TokenIdentifier

Get the Ugi with the username encoded in the token identifier

Specified by:

getUser in class org.apache.hadoop.security.token.TokenIdentifier

Returns:

the username. null is returned if username in the identifier is empty or null.