Package javax.jmdns.impl.tasks.state

Class DNSStateTask

java.lang.Object

java.util.TimerTask

javax.jmdns.impl.tasks.DNSTask

javax.jmdns.impl.tasks.state.DNSStateTask

All Implemented Interfaces:

java.lang.Runnable

Direct Known Subclasses:

Announcer, Canceler, Prober, Renewer

public abstract class DNSStateTask
extends DNSTask

This is the root class for all state tasks. These tasks work with objects that implements the DNSStatefulObject interface and therefore participate in the state machine.

Field Summary

Fields

Modifier and Type	Field	Description
private static int	_defaultTTL
private DNSState	_taskState	The state of the task.
private int	_ttl	By setting a 0 ttl we effectively expire the record.
(package private) static org.slf4j.Logger	logger

Constructor Summary

Constructors

Constructor	Description
DNSStateTask(JmDNSImpl jmDNSImpl, int ttl)

Method Summary

Modifier and Type	Method	Description
protected void	advanceObjectsState(java.util.List<DNSStatefulObject> list)
protected abstract void	advanceTask()
protected void	associate(DNSState state)	Associate the DNS host and the service infos with this task if not already associated and in the same state.
protected abstract DNSOutgoing	buildOutgoingForDNS(DNSOutgoing out)
protected abstract DNSOutgoing	buildOutgoingForInfo(ServiceInfoImpl info, DNSOutgoing out)
protected abstract boolean	checkRunCondition()
protected abstract DNSOutgoing	createOugoing()
static int	defaultTTL()
abstract java.lang.String	getTaskDescription()
protected DNSState	getTaskState()
int	getTTL()
protected abstract void	recoverTask(java.lang.Throwable e)
protected void	removeAssociation()	Remove the DNS host and service info association with this task.
void	run()
static void	setDefaultTTL(int value)	For testing only do not use in production.
protected void	setTaskState(DNSState taskState)

Methods inherited from class javax.jmdns.impl.tasks.DNSTask

addAdditionalAnswer, addAnswer, addAnswer, addAuthoritativeAnswer, addQuestion, getDns, getName, start, toString

Methods inherited from class java.util.TimerTask

cancel, scheduledExecutionTime

Methods inherited from class java.lang.Object

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

Field Detail

logger

static org.slf4j.Logger logger

_ttl

private final int _ttl

By setting a 0 ttl we effectively expire the record.

_defaultTTL

private static int _defaultTTL

_taskState

private DNSState _taskState

The state of the task.

Constructor Detail

DNSStateTask

public DNSStateTask(JmDNSImpl jmDNSImpl,
                    int ttl)

Parameters:

jmDNSImpl -

ttl -

Method Detail

getTaskDescription

public abstract java.lang.String getTaskDescription()

defaultTTL

public static int defaultTTL()

setDefaultTTL

public static void setDefaultTTL(int value)

For testing only do not use in production.

Parameters:

value -

getTTL

public int getTTL()

Returns:

the ttl

associate

protected void associate(DNSState state)

Associate the DNS host and the service infos with this task if not already associated and in the same state.

Parameters:

state - target state

removeAssociation

protected void removeAssociation()

Remove the DNS host and service info association with this task.

run

public void run()

Specified by:

run in interface java.lang.Runnable

Specified by:

run in class java.util.TimerTask

checkRunCondition

protected abstract boolean checkRunCondition()

buildOutgoingForDNS

protected abstract DNSOutgoing buildOutgoingForDNS(DNSOutgoing out)
                                            throws java.io.IOException

Throws:

java.io.IOException

buildOutgoingForInfo

protected abstract DNSOutgoing buildOutgoingForInfo(ServiceInfoImpl info,
                                                    DNSOutgoing out)
                                             throws java.io.IOException

Throws:

java.io.IOException

createOugoing

protected abstract DNSOutgoing createOugoing()

advanceObjectsState

protected void advanceObjectsState(java.util.List<DNSStatefulObject> list)

recoverTask

protected abstract void recoverTask(java.lang.Throwable e)

advanceTask

protected abstract void advanceTask()

getTaskState

protected DNSState getTaskState()

Returns:

the taskState

setTaskState

protected void setTaskState(DNSState taskState)

Parameters:

taskState - the taskState to set