Clustered enterprise Java™ in a secure distributed processing system

• US 6,571,274 B1
• Filed: 09/23/1999
• Issued: 05/27/2003
• Est. Priority Date: 11/05/1998
• Status: Expired due to Term

• Current Assignee: Oracle International Corporation (Oracle Corporation)
• Original Assignee: BEA Systems Incorporated (Oracle Corporation)
• Inventors: Langen, Anno R., Jacobs, Dean B.
• Primary Examiner(s): Courtenay, III, St. John
• Assistant Examiner(s): NGUYEN, VAN H
• Application Number:
  US09/405,500
• Time in Patent Office: 1,342 Days
• Field of Search: 709/1, 709/203, 709/201, 709/238, 709/200, 709/242
• US Class Current: 709/203
• CPC Class Codes: G06F 9/465 Distributed object oriented systems remote method invocation [RMI] G06F9/548
• CPC Class Codes: G06F 9/544 Buffers; Shared memory; Pipes
• CPC Class Codes: G06F 9/546 Message passing systems or structures, e.g. queues
• CPC Class Codes: G06F 9/548 Object oriented; Remote method invocation [RMI] non-remote method invocation G06F9/449

Abstract

A clustered enterprise Java™ distributed processing system is provided. The distributed processing system includes a first and a second computer coupled to a communication medium. The first computer includes a Java™ virtual machine (JVM) and kernel software layer for transferring messages, including a remote Java™ virtual machine (RJVM). The second computer includes a JVM and a kernel software layer having a RJVM. Messages are passed from a RJVM to the JVM in one computer to the JVM and RJVM in the second computer. Messages may be forwarded through an intermediate server or rerouted after a network reconfiguration. Each computer includes a Smart stub having a replica handler, including a load balancing software component and a failover software component. Each computer includes a duplicated service naming tree for storing a pool of Smart stubs at a node. The computers may be programmed in a stateless, stateless factory, or a stateful programming model. The clustered enterprise Java™ distributed processing system allows for enhanced scalability and fault tolerance.

Claims

1. A distributed processing system, comprising:

a communication medium;

a first processing device, coupled to the communication medium, having a firstJava™

virtual machine (“

JVM1”

) and a first kernel software layer including a first remote Java™

virtual machine (“

RJVM1”

);

a second processing device, coupled to the communication-medium, having a second Java™

virtual machine (“

JVM2”

) and a first kernel software layer including a second remote Java™

virtual machine (“

RJVM2”

),

wherein there is not a socket available between JVM1 and JVM2, and

wherein a message may be transferred from the first processing device to the second processing device.

2. The distributed processing system of claim 1, wherein the first processing device is running under an applet security model.

3. The distributed processing system of claim 1, wherein the second processing device is behind a firewall.

4. The distributed processing system of claim 1, wherein the first processing device is a client and the second processing device is a client.

5. The distributed processing system of claim 1, wherein the first kernel layer includes a thread manager software component.

6. The distributed processing system of claim 1, wherein the first kernel includes a socket manager software component.

7. The distributed processing system of claim 1, wherein the first Java™

virtual machine includes a message routing software component.

8. The distributed processing system of claim 1, wherein the first Java™

virtual machine includes a message compression software component.

9. The distributed processing system of claim 1, wherein the first Java™

virtual machine includes a peer-gone detection software component.

10. A distributed processing system, comprising:

a communication medium;

a first processing device, coupled to said communication medium and having a first virtual machine and a first kernel, said first kernel including a first remote virtual machine representing a virtual machine of a second processing device;

a second processing device, coupled to said communication medium and having a second virtual machine and a second kernel, said second kernel including a second remote virtual machine representing the virtual machine of said first processing device; and

,

wherein a message may be transferred from a one of said first or said second processing devices to the other of said first or said second processing devices via the remote virtual machine on said one processing device to the remote virtual machine on said other processing device.

11. The distributed processing system of claim 10, wherein said first processing device and said second processing device are a members of a plurality of processing devices, wherein each of said plurality of processing devices includes a remote virtual machine representing the virtual machine of other processing devices with which the processing device can communicate with.

12. The distributed processing system of claim 10, wherein said first and said second processing devices are separated by a firewall or applet security model.

13. The distributed processing system of claim 10, wherein said first processing device can be used by a first client or first application to communicate with a second client or second application that uses said second processing device.

14. The distributed processing system of claim 11, wherein a message can be forwarded from a first of said plurality of processing devices to a second of said plurality of processing devices by an intermediate processing device, by passing the message through a succession of remote virtual machines located at each processing device.

15. A method for distributed processing, comprising the steps of:

providing a communication medium;

providing a first processing device, coupled to said communication medium and having a first virtual machine and a first kernel, said first kernel including a first remote virtual machine representing a virtual machine of a second processing device;

providing a second processing device, coupled to said communication medium and having a second virtual machine and a second kernel, said second kernel including a second remote virtual machine representing the virtual machine of said first processing device; and

,

transferring a message from a one of said first or said second processing devices to the other of said first or said second processing devices via the remote virtual machine on said one processing device to the remote virtual machine on said other processing device.

16. The method of claim 15, wherein said first processing device and said second processing device are a members of a plurality of processing devices, wherein each of said plurality of processing devices includes a remote virtual machine representing the virtual machine of other processing devices with which the processing device can communicate with.

17. The method of claim 15, wherein said first and said second processing devices are separated by a firewall or applet security model.

18. The method of claim 15, wherein said first processing device can be used by a first client or first application to communicate with a second client or second application that uses said second processing device.

19. The method of claim 16, wherein a message can be forwarded from a first of said plurality of processing devices to a second of said plurality of processing devices by an intermediate processing device, by passing the message through a succession of remote virtual machines located at each processing device.