DYNAMIC AGENTS FOR DYNAMIC SERVICE PROVISION

• US 20020062334A1
• Filed: 08/19/1998
• Published: 05/23/2002
• Est. Priority Date: 08/19/1998
• Status: Abandoned Application

• Current Assignee: Hewlett-Packard Company (HP Inc.)
• Original Assignee: Hewlett-Packard Company (HP Inc.)
• Inventors: DAYAL, UMESHWAR, HSU, MEICHUN, CHEN, QIMING, CHUNDI, PARVATHI
• Application Number:
  US09/136,768
• Publication Number:
  US 20020062334A1
• Time in Patent Office: Days
• US Class Current: 709/200
• CPC Class Codes: G06F 9/465 Distributed object oriented systems remote method invocation [RMI] G06F9/548
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/34 involving the movement of software or configuration parameters network booting or remote initial program loading [RIPL] G06F9/4416
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

Dynamic agents and a dynamic agent infrastructure (platform) that provides a shift from static distributed computing to dynamic distributed computing are provided. The infrastructure supports dynamic behavior modification of agents. For example, a dynamic agent is not designated to have a fixed set of predefined functions but, instead, to carry application specific actions, which can be loaded and modified on the fly. Dynamic behavior modification allows a dynamic agent to adjust its capability for accommodating environment and requirement changes, and to play different roles across multiple applications. These features are supported by the light-weight, built-in management facilities of dynamic agents, which can be commonly used by the “carried” application programs to communicate, manage resources, and modify their problem solving capabilities. Accordingly, an infrastructure is provided for application specific multi-agent systems that provides “nuts and bolts” for run-time system integration and supports dynamic service construction, modification, and movement.

Claims

1. A distributed computing system comprising:

a dynamic agent infrastructure providing an environment for dynamic agents; and

a first dynamic agent executing on a first computer, wherein the first dynamic agent can be dynamically modified, and the first dynamic agent comprises management facilities for maintaining knowledge for communication and cooperation with other dynamic agents.

2. The apparatus of claim 1, further comprising:

a second dynamic agent executing on a second computer, the second dynamic agent exchanging data, knowledge and action objects with the dynamic agent service on the first computer using a message transmitted via a data communication network.

3. The apparatus of claim 2, wherein the agent infrastructure further comprises:

an agent factory executing on the second computer, the agent factory creating the second dynamic agent as a clone of the first dynamic agent.

4. The apparatus of claim 1, wherein the dynamic agents further comprise:

an action handler, an agenda handler, a message handler, an open server handler, and a resource handler.

5. The apparatus of claim 1, wherein the dynamic agents further comprise:

a network address; and

a symbolic name, wherein the network address and the symbolic name uniquely identify the dynamic agent.

6. The apparatus of claim 1, wherein the dynamic agents are modified by dynamically loading application specific programs.

7. The apparatus of claim 6, wherein the application specific programs comprise a Java™

class, and the dynamic agents further comprise built-in management services, the built-in management services being used to access resources of the dynamic agents, to activate actions to be performed by the dynamic agents, and to communicate with other dynamic agents.

8. The apparatus of claim 1, wherein the agent infrastructure further comprises:

a coordinator dynamic agent executing on a computer connected to the data communications network, the coordinator dynamic agent maintaining an agent name registry and a resource list.

9. The apparatus of claim 1, wherein the agent infrastructure further comprises:

a resource broker dynamic agent executing on a computer connected to the data communications network, the resource broker dynamic agent maintaining a directory of registered programs.

10. The apparatus of claim 1, wherein the agent infrastructure further comprises:

a request broker dynamic agent executing on a computer connected to the data communications network, the request broker dynamic agent maintaining a request queue.

11. The apparatus of claim 1, wherein the agent infrastructure further comprises:

an event broker dynamic agent executing on a computer connected to the data communications network, the event broker dynamic agent classifying events.

12. The apparatus of claim 1, wherein the agent infrastructure is implemented in a Java™

programming language.

13. The apparatus of claim 1 wherein a dynamic agent further comprises:

a Java™

class, the Java™

class comprising data, knowledge, and application specific programs.

14. The apparatus of claim 1 wherein the agent infrastructure provides inter-agent messaging.

15. The apparatus of claim 2 wherein the second dynamic agent transmits a service/resource request message to the first dynamic agent, the service/resource request message being implemented in an interface language.

17. The computer implemented method of claim 16 further comprising:

finding a requested application specific program using a resource broker;

dynamically loading the requested application specific program in the first dynamic agent; and

executing the requested application specific program loaded in the first dynamic agent.

18. The computer implemented method of claim 16 further comprising:

cloning the first dynamic agent as a second dynamic agent in the second computer, the first dynamic agent comprising a first network address and a first symbolic name, and the second dynamic agent comprising a second network address and a second symbolic name.

19. The computer implemented method of claim 18 further comprising:

dynamically modifying the second dynamic agent, wherein the second dynamic agent loads a Java™

class.

20. The computer implemented method of claim 16 wherein the agent infrastructure further comprises:

providing a coordinator, the coordinator coordinating cooperative problem solving among a plurality of dynamic agents.

21. The computer implemented method of claim 16 wherein the agent infrastructure further comprises:

providing a resource broker, the resource broker maintaining a directory of registered programs.

22. The computer implemented method of claim 16 wherein the agent infrastructure further comprises:

providing a request broker, the request broker maintaining a request queue.

23. The computer implemented method of claim 16 wherein the agent infrastructure further comprises:

providing an event broker, the event broker classifying events.

25. The computer readable medium as in claim 24 wherein the dynamic agent further comprises:

application specific programs, the application specific programs comprising a Java™

class loaded into an object store of the dynamic agent, the dynamic agent further comprising built-in management services, the built-in management services being used to access resources of the dynamic agent, to activate actions to be performed by the dynamic agent, and to communicate with other dynamic agents.

26. The computer readable medium as in claim 24 wherein the software further comprises:

a coordinator dynamic agent, the coordinator dynamic agent providing a naming service;

a resource broker dynamic agent, the resource broker dynamic agent providing a resource management service;

a request broker dynamic agent, the request broker dynamic agent processing service requests from dynamic agents and forwarding the service requests to appropriate service providers; and

an event broker dynamic agent, the event broker dynamic agent classifying event messages.

16. A computer implemented method for dynamic agents, the computer implemented method comprising:

executing a plurality of dynamic agents on a plurality of computers connected to a data communications network, the dynamic agents providing application specific functionality, wherein the application specific functionality is dynamically loaded into the dynamic agents

24. A computer readable medium comprising dynamic agents for dynamic service provision software, the software comprising:

a plurality of dynamic agents, the dynamic agents comprising an action handler, an agenda handler, a message handler, an open server handler, and a resources handler, the dynamic agent being dynamically modifiable while maintaining its identity and current state information.

27. Computer data signals embodied in a carrier wave comprising:

a service/request message transmitted from one dynamic agent to another dynamic agent, the service/resource request message comprising data, knowledge and action objects, and one or more addresses of other dynamic agents.