org.apache.hadoop.security.alias

Class CredentialShell

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.security.alias.CredentialShell

All Implemented Interfaces:

Configurable, Tool

public class CredentialShell
extends Configured
implements Tool

This program is the CLI utility for the CredentialProvider facilities in Hadoop.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CredentialShell.PasswordReader

Field Summary

Fields

Modifier and Type	Field and Description
PrintStream	err allows stderr to be captured if necessary
PrintStream	out allows stdout to be captured if necessary

Constructor Summary

Constructors

Constructor and Description
CredentialShell()

Method Summary

Methods

Modifier and Type	Method and Description
CredentialShell.PasswordReader	getPasswordReader()
protected int	init(String[] args) Parse the command line arguments and initialize the data
static void	main(String[] args) Main program.
protected char[]	promptForCredential()
int	run(String[] args) Execute the command with the given arguments.
void	setPasswordReader(CredentialShell.PasswordReader reader)

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Field Detail

out

public PrintStream out

allows stdout to be captured if necessary

err

public PrintStream err

allows stderr to be captured if necessary

Constructor Detail

CredentialShell

public CredentialShell()

Method Detail

run

public int run(String[] args)
        throws Exception

Description copied from interface: Tool

Execute the command with the given arguments.

Specified by:

run in interface Tool

Parameters:

args - command specific arguments.

Returns:

exit code.

Throws:

Exception

init

protected int init(String[] args)
            throws IOException

Parse the command line arguments and initialize the data

 % hadoop credential create alias [-provider providerPath]
 % hadoop credential list [-provider providerPath]
 % hadoop credential delete alias [-provider providerPath] [-i]
 

Parameters:

args -

Returns:

0 if the argument(s) were recognized, 1 otherwise

Throws:

IOException

promptForCredential

protected char[] promptForCredential()
                              throws IOException

Throws:

IOException

getPasswordReader

public CredentialShell.PasswordReader getPasswordReader()

setPasswordReader

public void setPasswordReader(CredentialShell.PasswordReader reader)

main

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

Main program.

Parameters:

args - Command line arguments

Throws:

Exception