Publish/subscribe messaging system

• US 20060136256A1
• Filed: 12/13/2005
• Published: 06/22/2006
• Est. Priority Date: 12/18/2004
• Status: Abandoned Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Roots, Jamie Gavin, Todd, Stephen James
• Application Number:
  US11/301,674
• Publication Number:
  US 20060136256A1
• Time in Patent Office: Days
• US Class Current: 705/345
• CPC Class Codes: G06Q 10/10 Office automation; Time management
• CPC Class Codes: G06Q 30/0257 User requested
• CPC Class Codes: G06Q 30/0271 Personalized advertisement

Abstract

A broker determines that a publication received from a publisher is transmitted to at least one subscriber. When a publication is received from a publisher, it is determined whether there are any subscribers registered as interested in the received publication. The received publication is retained in storage at least until the publication is delivered successfully to a subscriber in response to determining that there are no registered subscribers for the received publication.

Claims

1. A method for a broker to assure that a publication received from a publisher is transmitted to at least one subscriber, the method comprising:

receiving a publication from a publisher; and

retaining the publication in storage at least until the publication is delivered successfully to a subscriber in response to determining that there are no registered subscribers for the received publication.

2. The method of claim 1 further comprising:

receiving a subscription request from a subscriber;

determining whether the retained publication satisfies the subscription request; and

removing the retained publication from storage and transmitting the retained publication to the subscriber in response to determining that the retained publication satisfies the subscription request.

3. The method of claim 1 further comprising:

periodically determining whether it is possible to forward a retained publication to any registered subscriber.

4. The method of claim 1, wherein the received publication is an exception message.

5. The method of claim 1 further comprising:

designating a subscriber as a “

definitive consumer”

, wherein the designated “

definitive consumer”

is responsible for processing at least one publication.

6. The method of claim 5 further comprising:

determining who to designate as a “

definitive consumer”

responsible for processing the publication for each publication received.

7. The method of claim 5 further comprising:

periodically determining who to designate as a “

definitive consumer”

.

8. The method of claim 5 further comprising:

determining whether the subscriber should be designated as a definitive consumer upon receipt of a subscription request.

9. The method of claim 5 further comprising:

using information received from a subscriber to determine whether to designate the subscriber as a “

definitive consumer”

.

10. The method of claim 5 further comprising:

using rules at the broker to determine whether to designate the subscriber as a “

definitive consumer”

.

11. The method of claim 1 further comprising:

designating a subscriber as a “

for information only”

(FIO) subscriber, a FIO subscriber receiving at least one publication for information only.

12. The method of claim 11, comprising:

upon receipt of a subscription request, determining whether the subscriber should be designated as a FIO consumer.

13. The method of claim 11 further comprising:

using information received from a subscriber to determine whether to designate the subscriber as a FIO subscriber.

14. The method of claim 1 further comprising:

determining that there are no subscribers suitable to be designated as a definitive consumer for a received publication;

forwarding the received publication onto subscribers having registered an interest in such publications;

retaining a copy of the publication until a subscriber suitable to be designated a definitive consumer registers.

15. The method of claim 1, wherein retaining the publication in storage at least until the publication is delivered successfully to a subscriber comprises:

retaining the publication in storage until it is confirmed that the publication has been processed.

16. An apparatus for a broker to assure that a publication received from a publisher, is transmitted to at least one subscriber, the apparatus comprising:

means for receiving a publication from a publisher; and

means for retaining the publication in storage at least until the publication is delivered successfully to a subscriber in response to determining that there are no registered subscribers for the received publication.

17. The apparatus of claim 16 further comprising:

means for receiving a subscription request from a subscriber;

means for determining whether the retained publication satisfies the subscription request; and

means for removing the retained publication from storage and transmitting the retained publication to the subscriber in response to determining that the retained publication satisfies the subscription request.

18. The apparatus of claim 16 further comprising:

means for periodically determining whether it is possible to forward a retained publication to any registered subscriber.

19. A computer program product for a broker to assure that a publication received from a publisher is transmitted to at least one subscriber, said computer program product comprising:

a computer usable medium having computer useable program code embodied therewith, the computer useable program code comprising;

computer usable program code configured to receive a publication from a publisher; and

computer usable program code configured to retain the publication in storage at least until the publication is delivered successfully to a subscriber in response to determining that there are no registered subscribers for the received publication

20. The computer program product of claim 19 further comprising:

computer usable program code configured to receive a subscription request from a subscriber;

computer usable program code configured to determine whether the retained publication satisfies the subscription request; and

computer usable program code configured to remove the retained publication from storage and transmitting the retained publication to the subscriber in response to determining that the retained publication satisfies the subscription request.