Package org.bluezoo.gumdrop.mqtt.broker

Class WillManager

java.lang.Object

org.bluezoo.gumdrop.mqtt.broker.WillManager

public class WillManager
extends Object

Manages MQTT Last Will and Testament messages.

When a client connects with a will message, it is stored here. On unclean disconnect, the will message is published through the broker. On clean disconnect (DISCONNECT packet received), the will is cleared.

Author:

Chris Burdess

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	WillManager.WillMessage	A stored will message.

Constructor Summary

Constructors

Constructor	Description
WillManager()

Method Summary

Modifier and Type	Method	Description
void	clear(String clientId)	Clears the will for a client (called on clean disconnect).
boolean	has(String clientId)	Returns whether a will is set for the given client.
WillManager.WillMessage	remove(String clientId)	Removes and returns the will message for the given client.
void	set(String clientId, String topic, MQTTMessageContent content, QoS qos, boolean retain)	Stores a will message for the given client.

Methods inherited from class java.lang.Object

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

Constructor Details

WillManager

public WillManager()

Method Details

set

public void set(String clientId,
 String topic,
 MQTTMessageContent content,
 QoS qos,
 boolean retain)

Stores a will message for the given client.

remove

public WillManager.WillMessage remove(String clientId)

Removes and returns the will message for the given client.

Returns:

the will message, or null if none was set

clear

public void clear(String clientId)

Clears the will for a client (called on clean disconnect).

has

public boolean has(String clientId)

Returns whether a will is set for the given client.