Modifying a WS-Notification administered subscriber
As part of the configuration of a WS-Notification service point we can configure any number of administered subscribers for that service point. An administered subscriber provides a mechanism for the WS-Notification service point to subscribe to an external notification producer at server startup time.
An administered subscriber contains the name of a NotificationProducer application or a (different) NotificationBroker endpoint and details of a subscription request (for example topic) that the WS-Notification service point should register as part of the server startup procedure. This enables you to pre-configure links between the NotificationBroker and a NotificationProducer, which can be a remote NotificationBroker or a NotificationProducer application.
To modify an administered subscriber, use the console to complete the following steps:
- In the navigation pane, click Service integration -> WS-Notification -> Services -> service_name -> [Additional Properties] WS-Notification service points -> point_name -> Administered subscribers or Service integration -> Buses -> bus_name -> [Services] WS-Notification services -> service_name -> [Additional Properties] WS-Notification service points -> point_name -> Administered subscribers. The Administered subscribers [Collection] form is displayed. This form shows all the administered subscribers configured for this WS-Notification service point.
- In the content pane, click the name of an administered subscriber in the list. The current settings for this administered subscriber are displayed in the Configuration panel.
- Modify the properties for this administered subscriber.
- External web service endpoint
- The URL of the external web service to which the service should subscribe. That is, the endpoint reference (web address) of a notification producer or notification broker application. For example http://remoteproducer.com.
- Dialect
- The dialect in which the topic is expressed. The options are Simple, Concrete, or Full, as defined by the WS-Topics standard.
- Topic
- The topic on which the service should subscribe. This describes the class of notification messages that are delivered to the WS-Notification service point. For example stock/IBM. This property can include wildcards if they are supported by the topic dialect selected.
- Topic namespace
- The URI that describes the topic namespace in which the specified topic is defined.
- Remote subscription timeout
- The length of time in hours after which the remote subscription will expire if not renewed by the server. This timeout minimizes the potential for orphaned subscriptions in the remote web service if the local server is uninstalled. Note that this field does not indicate the time at which the remote subscription is due to expire. Set the timeout length to something larger than the maximum length of time that the server is expected to remain offline, otherwise the stream of messages from the remote web service might be interrupted. While the server is running it occasionally renews the remote subscription termination time (with the specified timeout) to prevent it from expiring during normal operation. If not specified, this timeout defaults to 24 (hours).
- Apply any changes, then click OK. If the processing completes successfully, the list of administered subscribers associated with the WS-Notification service point is redisplayed. Otherwise, an error message is displayed.
- Save the changes to the master configuration.
What to do next
We can also use the console to list runtime information for administered subscribers. For more information, see Listing active WS-Notification administered subscribers.
Related concepts
WS-Notification WS-Topics
Related tasks
Delete WS-Notification administered subscribers Use WS-Notification for publish and subscribe messaging for web services Secure WS-Notification Listing active WS-Notification administered subscribers
WS-Notification troubleshooting tips createWSNAdministeredSubscriber command listWSNAdministeredSubscribers command showWSNAdministeredSubscriber command WS-Topics Version 1.3 OASIS Standard
Related information:
Administered subscribers [Settings]