alluxio.cli.fs.command

Class DuCommand

java.lang.Object

alluxio.cli.fs.command.AbstractFileSystemCommand

alluxio.cli.fs.command.DuCommand

All Implemented Interfaces:

Command

@ThreadSafe
public final class DuCommand
extends AbstractFileSystemCommand

Displays the size of a file or a directory specified by argv.

Field Summary

Fields inherited from class alluxio.cli.fs.command.AbstractFileSystemCommand

mFileSystem

Constructor Summary

Constructors

Constructor and Description
DuCommand(FileSystem fs)

Method Summary

Modifier and Type	Method and Description
String	getCommandName() Gets the command name as input from the shell.
String	getDescription()
String	getUsage()
int	run(org.apache.commons.cli.CommandLine cl) Runs the command.
protected void	runPlainPath(AlluxioURI path, org.apache.commons.cli.CommandLine cl) Run the command for a particular URI that does not contain wildcard in its path.
void	validateArgs(org.apache.commons.cli.CommandLine cl) Checks if the arguments are valid or throw InvalidArgumentException.

Methods inherited from class alluxio.cli.fs.command.AbstractFileSystemCommand

runWildCardCmd

Methods inherited from class java.lang.Object

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

Methods inherited from interface alluxio.cli.Command

getOptions, parseAndValidateArgs

Constructor Detail

DuCommand

public DuCommand(FileSystem fs)

Parameters:

fs - the filesystem of Alluxio

Method Detail

getCommandName

public String getCommandName()

Description copied from interface: Command

Gets the command name as input from the shell.

Returns:

the command name

runPlainPath

protected void runPlainPath(AlluxioURI path,
                            org.apache.commons.cli.CommandLine cl)
                     throws AlluxioException,
                            IOException

Description copied from class: AbstractFileSystemCommand

Run the command for a particular URI that does not contain wildcard in its path.

Overrides:

runPlainPath in class AbstractFileSystemCommand

Parameters:

path - an AlluxioURI that does not contain wildcard

cl - object containing the original commandLine

Throws:

AlluxioException

IOException

getUsage

public String getUsage()

Returns:

the usage information of the command

getDescription

public String getDescription()

Returns:

the description information of the command

validateArgs

public void validateArgs(org.apache.commons.cli.CommandLine cl)
                  throws InvalidArgumentException

Description copied from interface: Command

Checks if the arguments are valid or throw InvalidArgumentException.

Parameters:

cl - the parsed command line for the arguments

Throws:

InvalidArgumentException - when arguments are not valid

run

public int run(org.apache.commons.cli.CommandLine cl)
        throws AlluxioException,
               IOException

Description copied from interface: Command

Runs the command.

Parameters:

cl - the parsed command line for the arguments

Returns:

the result of running the command

Throws:

AlluxioException

IOException