Package org.opennms.netmgt.poller.monitors.support

Class DNSAddressRR

java.lang.Object

org.opennms.netmgt.poller.monitors.support.DNSAddressRR

public final class DNSAddressRR
extends Object

Holds a DNS resource record which is a DNS response that gives the IP address of a particular hostname. A resource record typically has:

	Element	Description
Name	Domain name that the resource record describes.
Type	Type of RR.
Class	RR Class.
TTL	Time-To-Live for the RR.
RDLEN	Length of the following data.
Data	Actual data of this RR.

Author:

Sowmya , OpenNMS

Constructor Summary

Constructors

Constructor	Description
DNSAddressRR(String name, int type, int clas, long ttl, DNSInputStream dnsIn)	Constructs an new DNS Address Resource Record with the specified information.

Method Summary

Modifier and Type	Method	Description
byte[]	getAddress()	Returns the address from the address record as a byte array.
InetAddress	getInetAddress()	the InetAddress of the address contained for the record.
int	getRRClass()	Returns the class of this RR.
String	getRRName()	Returns the name of this RR.
long	getRRTTL()	Returns the TTL of this RR.
int	getRRType()	Returns the type of this RR.
boolean	isValid()	Returns true if still valid i.e.
String	toString()	Converts the object to a textual string that describes the resource record.

Methods inherited from class java.lang.Object

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

Constructor Detail

DNSAddressRR

public DNSAddressRR(String name,
                    int type,
                    int clas,
                    long ttl,
                    DNSInputStream dnsIn)
             throws IOException

Constructs an new DNS Address Resource Record with the specified information.

Parameters:

name - name of the RR

type - type of the RR

clas - class of the RR

ttl - time for which this RR is valid

dnsIn - inputstream for this RR

Throws:

IOException - Thrown if an error occurs decoding data from the passed DNSInputStream.

IOException - if any.

Method Detail

getAddress

public byte[] getAddress()

Returns the address from the address record as a byte array.

Returns:

The address as a byte array.

getInetAddress

public InetAddress getInetAddress()
                           throws UnknownHostException

the InetAddress of the address contained for the record.

Returns:

The InetAddress of the address

Throws:

UnknownHostException - Thrown if the InetAddress object cannot be constructed.

UnknownHostException - if any.

toString

public String toString()

Converts the object to a textual string that describes the resource record.

Overrides:

toString in class Object

Returns:

The string describing the object.

getRRName

public String getRRName()

Returns the name of this RR.

Returns:

The name of this RR.

getRRType

public int getRRType()

Returns the type of this RR.

Returns:

The type of this RR.

getRRClass

public int getRRClass()

Returns the class of this RR.

Returns:

The class of this RR.

getRRTTL

public long getRRTTL()

Returns the TTL of this RR.

Returns:

the TTL of this RR

isValid

public boolean isValid()

Returns true if still valid i.e. TTL has not expired.

Returns:

True if valid, false if not.