org.wso2.carbon.andes.event.core.internal.subscription.registry

Class RegistrySubscriptionManager

java.lang.Object

org.wso2.carbon.andes.event.core.internal.subscription.registry.RegistrySubscriptionManager

All Implemented Interfaces:

SubscriptionManager

public class RegistrySubscriptionManager
extends Object
implements SubscriptionManager

Subscription manager implementation using registry.

This subscription manager stores the subscriptions in the registry patch calculated as given subscriptionStoragePath(read from the configuration file) + "/" + topicName + "/system.subscriptions/" + subscriptionID

In-order to get the subscriptions quickly it also stores the subscription details in a resource called topicIndex.

Topic index resource contains subscriptionID , topicName.

When getting the subscriptions we calculate the subscription stored path using above two parameters.

Constructor Summary

Constructors

Constructor and Description
RegistrySubscriptionManager(String topicStoragePath, String indexStoragePath) Adds topic storage path and index storage path to user registry.

Method Summary

Methods

Modifier and Type	Method and Description
void	addSubscription(Subscription subscription) When adding a subscription first it stores in the registry as as set of property values then add the subscription details to the topic index
List<Subscription>	getAllSubscriptions() Get all the subscriptions.
Subscription	getSubscription(String id) Gets the subscription
String	getTopicStoragePath() Gets the topic storage path
void	renewSubscription(Subscription subscription) Renewing a subscription
void	unSubscribe(String subscriptionID) Un-Subscribing to a destination.

Methods inherited from class java.lang.Object

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

Constructor Detail

RegistrySubscriptionManager

public RegistrySubscriptionManager(String topicStoragePath,
                           String indexStoragePath)
                            throws EventBrokerConfigurationException

Adds topic storage path and index storage path to user registry.

Parameters:

topicStoragePath - topic storage path. the path where topics will be stored.

indexStoragePath - index storage path.

Throws:

EventBrokerConfigurationException

Method Detail

addSubscription

public void addSubscription(Subscription subscription)
                     throws EventBrokerException

When adding a subscription first it stores in the registry as as set of property values then add the subscription details to the topic index

Specified by:

addSubscription in interface SubscriptionManager

Parameters:

subscription - the subscription to be added

Throws:

EventBrokerException

getAllSubscriptions

public List<Subscription> getAllSubscriptions()
                                       throws EventBrokerException

Get all the subscriptions. it get the subscription ids from the topic index and get relevant subscriptions.

Specified by:

getAllSubscriptions in interface SubscriptionManager

Returns:

a list of subscriptions

Throws:

EventBrokerException

getSubscription

public Subscription getSubscription(String id)
                             throws EventBrokerException

Gets the subscription

Specified by:

getSubscription in interface SubscriptionManager

Parameters:

id - the subscription id

Returns:

the relevant subscription

Throws:

EventBrokerException

renewSubscription

public void renewSubscription(Subscription subscription)
                       throws EventBrokerException

Renewing a subscription

Specified by:

renewSubscription in interface SubscriptionManager

Parameters:

subscription - the subscription

Throws:

EventBrokerException

unSubscribe

public void unSubscribe(String subscriptionID)
                 throws EventBrokerException

Un-Subscribing to a destination. Destination can be queue or topic.

Specified by:

unSubscribe in interface SubscriptionManager

Parameters:

subscriptionID - the subscription ID

Throws:

EventBrokerException

getTopicStoragePath

public String getTopicStoragePath()
                           throws EventBrokerException

Gets the topic storage path

Specified by:

getTopicStoragePath in interface SubscriptionManager

Returns:

the storage path

Throws:

EventBrokerException