Package org.ldaptive.dns

Class SRVDNSResolver

java.lang.Object

org.ldaptive.dns.AbstractDNSResolver<SRVRecord>

org.ldaptive.dns.SRVDNSResolver

All Implemented Interfaces:

DNSResolver<SRVRecord>

public class SRVDNSResolver
extends AbstractDNSResolver<SRVRecord>

Queries for DNS A records for a given host name.

Field Summary

Fields

Modifier and Type	Field	Description
private static final String[]	ATTRIBUTES	Attributes (DNS record types) to query for.
private static final String	DEFAULT_RECORD_NAME	Default DNS record name.
private final boolean	useSSL	Connect to LDAP using LDAPS.

Fields inherited from class org.ldaptive.dns.AbstractDNSResolver

logger

Constructor Summary

Constructors

Constructor	Description
SRVDNSResolver()	Default constructor.
SRVDNSResolver(DNSContextFactory factory)	Creates a new DNS address resolver.
SRVDNSResolver(DNSContextFactory factory, boolean ssl)	Creates a new DNS address resolver.

Method Summary

Modifier and Type	Method	Description
protected String[]	getAttributes()	Get the types of records to query for, e.g.
protected Set<SRVRecord>	processRecords(Set<String> records)	Process a set of DNS records.
Set<SRVRecord>	resolve(String name)	Resolve a set of DNS records of some type for the given name.
protected Set<SRVRecord>	sortSrvRecords(Set<SRVRecord> records)	Sorts the supplied SRV records according to RFC 2782.
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

ATTRIBUTES

private static final String[] ATTRIBUTES

Attributes (DNS record types) to query for.

DEFAULT_RECORD_NAME

private static final String DEFAULT_RECORD_NAME

Default DNS record name.

See Also:

• Constant Field Values

useSSL

private final boolean useSSL

Connect to LDAP using LDAPS.

Constructor Details

SRVDNSResolver

public SRVDNSResolver()

Default constructor.

SRVDNSResolver

public SRVDNSResolver(DNSContextFactory factory)

Creates a new DNS address resolver.

Parameters:

factory - JNDI dir context factory

SRVDNSResolver

public SRVDNSResolver(DNSContextFactory factory,
 boolean ssl)

Creates a new DNS address resolver.

Parameters:

factory - JNDI dir context factory

ssl - whether SRV records should produce LDAPS URLs

Method Details

resolve

public Set<SRVRecord> resolve(String name)

Description copied from interface: DNSResolver

Resolve a set of DNS records of some type for the given name.

Specified by:

resolve in interface DNSResolver<SRVRecord>

Overrides:

resolve in class AbstractDNSResolver<SRVRecord>

Parameters:

name - Name for which to resolve DNS records.

Returns:

Set of records of type T bound to the given name.

getAttributes

protected String[] getAttributes()

Description copied from class: AbstractDNSResolver

Get the types of records to query for, e.g. {"A", "AAAA"}.

Specified by:

getAttributes in class AbstractDNSResolver<SRVRecord>

Returns:

Array of JNDI attribute names.

processRecords

protected Set<SRVRecord> processRecords(Set<String> records)

Description copied from class: AbstractDNSResolver

Process a set of DNS records.

Specified by:

processRecords in class AbstractDNSResolver<SRVRecord>

Parameters:

records - Set of raw DNS records returned from a name query.

Returns:

Set of converted/processed records.

sortSrvRecords

protected Set<SRVRecord> sortSrvRecords(Set<SRVRecord> records)

Sorts the supplied SRV records according to RFC 2782. Records with the lowest priority are first. Records with the same priority are arranged by weight with higher weights having a greater chance to be ordered first.

Parameters:

records - to sort

Returns:

sorted records

toString

public String toString()

Overrides:

toString in class AbstractDNSResolver<SRVRecord>