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

Class DNSAddressRR

  • public final class DNSAddressRR
extends java.lang.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​(java.lang.String name, int type, int clas, long ttl, DNSInputStream dnsIn)
      Constructs an new DNS Address Resource Record with the specified information.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      byte[] getAddress()
      Returns the address from the address record as a byte array.
      java.net.InetAddress getInetAddress()
      the InetAddress of the address contained for the record.
      int getRRClass()
      Returns the class of this RR.
      java.lang.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.
      java.lang.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​(java.lang.String name,
                    int type,
                    int clas,
                    long ttl,
                    DNSInputStream dnsIn)
             throws java.io.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:
        java.io.IOException - Thrown if an error occurs decoding data from the passed DNSInputStream.
        java.io.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 java.net.InetAddress getInetAddress()
                                    throws java.net.UnknownHostException

        the InetAddress of the address contained for the record.

        Returns:
        The InetAddress of the address
        Throws:
        java.net.UnknownHostException - Thrown if the InetAddress object cannot be constructed.
        java.net.UnknownHostException - if any.

      • toString

        public java.lang.String toString()

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

        Overrides:
        toString in class java.lang.Object
        Returns:
        The string describing the object.

      • getRRName

        public java.lang.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.