org.cipango.server.dns

Class Rfc3263DnsResolver

java.lang.Object

org.eclipse.jetty.util.component.AbstractLifeCycle

org.eclipse.jetty.util.component.ContainerLifeCycle

org.cipango.server.dns.Rfc3263DnsResolver

All Implemented Interfaces:

DnsResolver, org.eclipse.jetty.util.component.Container, org.eclipse.jetty.util.component.Destroyable, org.eclipse.jetty.util.component.Dumpable, org.eclipse.jetty.util.component.LifeCycle

@ManagedObject(value="RFC 3263 DNS resolver")
public class Rfc3263DnsResolver
extends org.eclipse.jetty.util.component.ContainerLifeCycle
implements DnsResolver

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

org.eclipse.jetty.util.component.AbstractLifeCycle.AbstractLifeCycleListener

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.Container

org.eclipse.jetty.util.component.Container.InheritedListener, org.eclipse.jetty.util.component.Container.Listener

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.LifeCycle

org.eclipse.jetty.util.component.LifeCycle.Listener

Field Summary

Fields inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

FAILED, RUNNING, STARTED, STARTING, STOPPED, STOPPING

Constructor Summary

Constructors

Constructor and Description
Rfc3263DnsResolver()

Method Summary

Modifier and Type	Method and Description
protected void	doStart()
DnsService	getDnsService()
java.util.Set<java.lang.String>	getEnableNaptrTransports()
java.util.Collection<Transport>	getEnableTransports()
java.util.List<Hop>	getHops(Hop hop)
boolean	getUseNaptr()
protected void	removeDuplicate(java.util.List<Hop> hops) Remove duplicates hops having same host and same port whatever transport used.
void	setDnsService(DnsService dnsService)
void	setEnableTransports(java.util.Collection<Transport> transports)
void	setUseNaptr(boolean useNaptr) Relaxes RFC3263: When environment is known to do not have NAPTR records as optimization NAPTR lookup can be skipped.
protected java.util.List<Hop>	sortRecords(java.util.List<Hop> list) For priority/weight resolution we need to do more than just sorting SRVs by priority/weight.

Methods inherited from class org.eclipse.jetty.util.component.ContainerLifeCycle

addBean, addBean, addBean, addEventListener, contains, destroy, doStop, dump, dump, dump, dump, dump, dumpBeans, dumpObject, dumpStdErr, dumpThis, getBean, getBeans, getBeans, isManaged, manage, removeBean, removeBeans, removeEventListener, setBeans, setStopTimeout, start, stop, unmanage, updateBean, updateBeans

Methods inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

addLifeCycleListener, getState, getState, getStopTimeout, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeLifeCycleListener, start, stop

Methods inherited from class java.lang.Object

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

Constructor Detail

Rfc3263DnsResolver

public Rfc3263DnsResolver()

Method Detail

doStart

protected void doStart()
                throws java.lang.Exception

Overrides:

doStart in class org.eclipse.jetty.util.component.ContainerLifeCycle

Throws:

java.lang.Exception

getHops

public java.util.List<Hop> getHops(Hop hop)
                            throws java.net.UnknownHostException

Specified by:

getHops in interface DnsResolver

Throws:

java.net.UnknownHostException

removeDuplicate

protected void removeDuplicate(java.util.List<Hop> hops)

Remove duplicates hops having same host and same port whatever transport used. If duplicates if found, first found in list is keep. Order remains unchanged.

sortRecords

protected java.util.List<Hop> sortRecords(java.util.List<Hop> list)

For priority/weight resolution we need to do more than just sorting SRVs by priority/weight. Specifically: Among records with the same priority we need to randomly choose record according to weight. Note: method is protected, to make it possible to apply different sorting methods to SRV in subclasses (e.g. methods which account for deployment site network topology, for example favoring records pointing to "nearby" servers).

Parameters:

original -

Returns:

getEnableNaptrTransports

public java.util.Set<java.lang.String> getEnableNaptrTransports()

setEnableTransports

public void setEnableTransports(java.util.Collection<Transport> transports)

Specified by:

setEnableTransports in interface DnsResolver

getEnableTransports

@ManagedAttribute(value="Enabled transport",
                  readonly=true)
public java.util.Collection<Transport> getEnableTransports()

Specified by:

getEnableTransports in interface DnsResolver

getDnsService

@ManagedAttribute(value="DNS service")
public DnsService getDnsService()

setDnsService

public void setDnsService(DnsService dnsService)

getUseNaptr

@ManagedAttribute(value="Use NAPTR")
public boolean getUseNaptr()

setUseNaptr

public void setUseNaptr(boolean useNaptr)

Relaxes RFC3263: When environment is known to do not have NAPTR records as optimization NAPTR lookup can be skipped.

Parameters:

useNaptr -