Tunable engine and program product for resolving prerequisites for client devices in an open service gateway initiative (OSGi) framework

• US 7,966,617 B2
• Filed: 10/03/2008
• Issued: 06/21/2011
• Est. Priority Date: 03/22/2004
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Hayes, Kent F. Jr.
• Primary Examiner(s): Nguyen; Van H
• Application Number:
  US12/245,278
• Publication Number:
  US 20090030979A1
• Time in Patent Office: 991 Days
• Field of Search: 719/310, 719/311, 719/327, 709/223, 709/224, 709/225, 709/226
• US Class Current: 719/311
• CPC Class Codes: H04L 67/303 Terminal profiles
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services

Abstract

Under the present invention, each client device will have a corresponding configuration that is accessible to the server. Each configuration sets forth various computer resources as well as corresponding normalization and importance factors for the associated client device. If a certain OSGi bundle is to be loaded and run on a particular client device, certain prerequisites (e.g., services packages, etc.) will likely be necessary. Any prerequisites that the client device lacks will be obtained using potential combinations of other OSGi bundles registered with the server. The most appropriate combination of OSGi bundles will be selected from the possible combinations by processing the configuration based on the amounts of computer resources of the client device that will be consumed by each of the possible combinations.

Claims

1. A tunable prerequisite resolution engine for client devices in an Open Service Gateway Initiative (OSGi) framework, comprising:

a processor; and

a memory, the memory including;

a prerequisite computation system for determining, on a server, necessary prerequisites for one or more OSGi bundle(s) to be run on a client device;

a bundle identification system for identifying possible combinations of OSGi bundles on the server that fulfill any of the necessary prerequisites that are lacking from the client device;

a data access system for accessing a configuration corresponding to the client device, wherein the configuration sets forth computer resource types, and corresponding normalization factors and importance factors for the client device; and

a bundle selection system for selecting a final combination of OSGi bundles from the possible combinations of OSGi bundles by processing the configuration and computing based on amounts of the computer resources needed by each of the possible combinations of OSGi bundles, the bundle selection system further comprising;

an amount determination system for determining amounts of the computer resources needed by each of the possible combinations of OSGi bundles;

a product determination system for determining products for each of the possible combinations of OSGi bundles by multiplying each of the amounts by the corresponding normalization factors and importance factors set forth in the configuration;

a score determination system for determining a composite score for each of the possible combinations of OSGi bundles by summing the corresponding products; and

a bundle system for selecting the final combination of OSGi bundles from the possible combinations of OSGi bundles based on the composite scores.

2. The tunable prerequisite resolution engine of claim 1, further comprising a communication system for communicating the prerequisites from the server to the client device, and for receiving a response from the client device, wherein the response identifies any of the necessary prerequisites that are lacking from the client device.

3. The tunable prerequisite resolution engine of claim 1, wherein the configuration is accessed from among a group of properties files, and wherein each of the group of properties files is configured for a particular different client device.

4. The tunable prerequisite resolution engine of claim 1, wherein the computer resources types comprise at least one of:

a bundle storage requirement, a new space size, an old space size, an open file quantity, a quota, a memory requirement, a socket quantity, and a thread quantity.

5. The tunable prerequisite resolution engine of claim 1, further comprising a configuration system for setting the configuration for the client device.

6. The tunable prerequisite resolution engine of claim 1, wherein the prerequisites comprise at least one of a service and/or package.

7. The tunable prerequisite resolution engine of claim 1, wherein the client device comprises:

an analysis system for determining whether any of the necessary prerequisites are lacking from the client device; and

a response system for generating and sending a response to the server.

8. The tunable prerequisite resolution engine of claim 1, wherein the client device communicates with the server over the Internet.

9. The tunable prerequisite resolution engine of claim 1, wherein the configuration sets forth computer resource types, and corresponding normalization factors and importance factors for a particular type of client device.

10. The tunable prerequisite resolution engine of claim 1, wherein the configuration sets forth computer resource types, and corresponding normalization factors and importance factors for a group of client devices.

11. The tunable prerequisite resolution engine of claim 1, wherein the possible combination of OSGi bundles having the lowest composite score is selected as the final combination of OSGi bundles.

12. A program product stored on a data storage medium for automatically resolving prerequisites for client devices in an Open Service Gateway Initiative (OSGi) framework, the program product comprising program code, which when executed, performs:

determining, on a server, necessary prerequisites for an OSGi bundle to be run on a client device;

determining possible combinations of OSGi bundles on the server that fulfill any of the necessary prerequisites that are lacking from the client device;

accessing a configuration corresponding to the client device, wherein the configuration sets forth computer resource types and corresponding normalization factors and importance factors for the client device; and

selecting a final combination of OSGi bundles from the possible combinations of OSGi bundles by processing the configuration based on amounts of the computer resources needed by each of the possible combinations of OSGi bundles, wherein the selecting further comprises;

determining amounts of the computer resources needed by each of the possible combinations of OSGi bundles;

determining products for each of the possible combinations of OSGi bundles by multiplying each of the amounts by the corresponding normalization factors and importance factors set forth in the configuration;

determining a composite score for each of the possible combinations of OSGi bundles by summing the corresponding products; and

selecting the final combination of OSGi bundles from the possible combinations of OSGi bundles based on the composite scores.

13. The program product of claim 12, wherein the program code further performs:

communicating the prerequisites from the server to the client device; and

receiving a response from the client device, wherein the response identifies any of the necessary prerequisites that are lacking from the client device.

14. The program product of claim 12, wherein the configuration is accessed from among a group of properties files, and wherein each of the group of properties files is configured for a particular different client device.

15. The program product of claim 12, wherein the computer resource types comprise at least one of:

a bundle storage requirement, a new space size, an old space size, an open file quantity, a quota, a memory requirement, a socket quantity, and a thread quantity.

16. The program product of claim 12, wherein the program code further performs configuring the configuration for the client device.

17. The program product of claim 12, wherein the prerequisites comprise at least one of a service and a package.

18. The program product of claim 12, wherein the client device comprises:

program code for determining whether any of the necessary prerequisites are lacking from the client device; and

program code for generating and sending a response to the server.

19. The program product of claim 12, wherein the client device communicates with the server over the Internet.

20. The program product of claim 12, wherein the configuration sets forth computer resource types, and corresponding normalization factors and importance factors for a particular type of client device.

21. The program product of claim 12, wherein the configuration sets forth computer resource types, and corresponding normalization factors and importance factors for a group of client devices.

22. The program product of claim 12, wherein the possible combination of OSGi bundles having the lowest composite score is selected as the final combination of OSGi bundles.