org.apache.hadoop.util

Class MachineList

java.lang.Object

org.apache.hadoop.util.MachineList

public class MachineList
extends Object

Container class which holds a list of ip/host addresses and answers membership queries. Accepts list of ip addresses, ip addreses in CIDR format and/or host addresses.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MachineList.InetAddressFactory InetAddressFactory is used to obtain InetAddress from host.

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.commons.logging.Log	LOG
static String	WILDCARD_VALUE

Constructor Summary

Constructors

Constructor and Description
MachineList(Collection<String> hostEntries)
MachineList(Collection<String> hostEntries, MachineList.InetAddressFactory addressFactory) Accepts a collection of ip/cidr/host addresses
MachineList(String hostEntries)

Method Summary

Methods

Modifier and Type	Method and Description
Collection<String>	getCollection() returns the contents of the MachineList as a Collection This can be used for testing
boolean	includes(String ipAddress) Accepts an ip address and return true if ipAddress is in the list

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.apache.commons.logging.Log LOG

WILDCARD_VALUE

public static final String WILDCARD_VALUE

See Also:

Constant Field Values

Constructor Detail

MachineList

public MachineList(String hostEntries)

Parameters:

hostEntries - comma separated ip/cidr/host addresses

MachineList

public MachineList(Collection<String> hostEntries)

Parameters:

hostEntries - collection of separated ip/cidr/host addresses

MachineList

public MachineList(Collection<String> hostEntries,
           MachineList.InetAddressFactory addressFactory)

Accepts a collection of ip/cidr/host addresses

Parameters:

hostEntries -

addressFactory - addressFactory to convert host to InetAddress

Method Detail

includes

public boolean includes(String ipAddress)

Accepts an ip address and return true if ipAddress is in the list

Parameters:

ipAddress -

Returns:

true if ipAddress is part of the list

getCollection

public Collection<String> getCollection()

returns the contents of the MachineList as a Collection This can be used for testing

Returns:

contents of the MachineList