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

• US 7,478,396 B2
• Filed: 03/22/2004
• Issued: 01/13/2009
• 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:
  US10/805,739
• Publication Number:
  US 20050210474A1
• Time in Patent Office: 1,758 Days
• Field of Search: 709/204, 709/205, 709/220, 709/230, 709/203, 709/226, 719/310, 719/311, 719/321, 719/327, 718/104, 717/176, 717/177
• 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 computer-implemented method for resolving prerequisites for client devices in an Open Service Gateway Initiative (OSGi) framework, comprising:

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

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

accessing, from the server, 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 the computer resources needed by each of the possible combinations of OSGi bundles,

wherein the selecting step 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 properties files;

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.

2. The method of claim 1, further comprising:

querying the client device to determine if the client device has the necessary prerequisites; and

receiving a response from the client device that identifies any of the necessary prerequisites that are lacking on the client device, prior to the determining step.

3. The method of claim 2, further comprising caching the response on the server.

4. The method of claim 1, wherein the possible combination of OSGi bundles having the lowest composite score is selected as the final combination of OSGi bundles.

5. The method 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 specific client device.

6. The method of claim 1, wherein the computer resources types are selected from the group consisting 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.

7. The method of claim 1, wherein the prerequisites comprise at least one of a service and a package.

8. The method of claim 1, wherein the method is performed recursively.