Clustered enterprise Java™ in a secure distributed processing system

• US 6,941,555 B2
• Filed: 05/01/2003
• Issued: 09/06/2005
• 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:
  US10/427,798
• Publication Number:
  US 20030195996A1
• Time in Patent Office: 859 Days
• Field of Search: 719313-315, 719/330, 719/310, 718/1, 718100-102, 709/201, 709/203, 709238-239, 709/310, 709/1, 709/242, 709/200
• US Class Current: 719/313
• 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 distributed processing system. The distributed processing system includes a first and a second computer coupled to a communication medium. The first computer includes a virtual machine (JVM) and kernel software layer for transferring messages, including a remote 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.

Claims

1. A system for communication between processing devices in a cluster, comprising:

a first processing device, having a first virtual machine executing thereon, a first remote method invocation layer comprising stubs, a first communication medium, and a first kernel that includes a first message data structure corresponding to a second virtual machine executing at a second processing device, wherein the first message data structure comprises a first message routing software component and a first message compression software component, wherein the first kernel and first remote method invocation layer operate above the first virtual machine layer;

a second processing device, having said second virtual machine executing thereon, a second remote method invocation layer comprising skeletons, and a second communication medium, and a second kernel that includes a second message data structure corresponding to the first virtual machine executing at said first processing device, wherein the second message data structure comprises a second message routing software component and a second message compression software component, wherein the second kernel and the second remote method invocation layer operate above the second virtual machine layer; and

,

wherein a message is transferred from a stub in said first remote method invocation layer to a skeleton in said second remote method invocation layer via the first message data structure on said first processing device, the first virtual machine, the first communication medium, the second communication medium, the second virtual machine and the second message data structure on said second processing device, using the corresponding message routing software components and message compression software components.

2. The system of claim 1 wherein said first virtual machine is a first Java virtual machine, and said first message data structure is a first remote Java virtual machine, and wherein second virtual machine is a second Java virtual machine, and said second message data structure is a second remote Java virtual machine.

3. The system of claim 1, wherein said first message data structure further comprises a first peer gone detection software component to detect if the second virtual machine is alive.

4. The system of claim 3, wherein said second message data structure further comprises a second peer gone detection software component to detect if the first virtual machine is alive.

5. The system of claim 1, wherein said first message data structure further comprises a first peer gone detection software component to detect if the second processing device is alive.

6. A system for communication between processing devices in a cluster, comprising:

a first processing device, having a first virtual machine executing thereon, a first remote method invocation layer, and a first kernel that includes a first message routing data structure corresponding to a second virtual machine executing at a second processing device, wherein the first kernel and the first remote method invocation layer operate above the first virtual machine layer;

a second processing device, having said second virtual machine executing thereon, a second remote method invocation layer, and a second kernel that includes a second message routing data structure corresponding to the first virtual machine executing at said first processing device, and a third message routing data structure corresponding to a third virtual machine executing at a third processing device, wherein the second kernel and second remote method invocation layer operate above the second virtual machine layer;

a third processing device, having said third virtual machine executing thereon, a third remote method invocation layer, and a third kernel that includes a fourth message routing data structure corresponding to the second virtual machine executing at said second processing device, wherein the third kernel and the third remote method invocation layer operate above the third virtual machine layer; and

,

wherein a message is transferred from said first remote method invocation layer to said third remote method invocation layer via the first message routing data structure on said first processing device, the second message routing data structure on said second processing device, the third message routing data structure on said second processing device, and the fourth message routing data structure on said third processing device.

7. The system of claim 6 wherein said first virtual machine is a first Java virtual machine and said first message routing data structure is a first remote Java virtual machine, and wherein second virtual machine is a second Java virtual machine and said second message routing data structure is a second remote Java virtual machine, and wherein third virtual machine is a third Java virtual machine, said third message routing data structure is a third remote Java virtual machine, and fourth message routing data structure is a fourth remote Java virtual machine.

8. The system according to claim 6 wherein the first, second, third and fourth message routing data structures each further comprise a peer gone detection software component.

9. A method of communication between processing devices in a cluster, comprising the steps of:

providing a first processing device, said first processing device having a first virtual machine executing thereon, a first remote method invocation layer, and a first kernel that includes a first message data structure corresponding to a second virtual machine executing at a second processing device, wherein the first message data structure comprises a first message routing software component and a first message compression software component, wherein the first kernel and the first remote method invocation layer operate above the first virtual machine layer;

providing the second processing device, said second processing device having said second virtual machine executing thereon, a second remote method invocation layer, and a second kernel that includes a second message data structure corresponding to the first virtual machine executing at said first processing device, wherein the second message data structure comprises a second message routing software component and a second message compression software component, wherein the second kernel and the second remote method invocation layer operate above the second virtual machine layer; and

,

transferring a message from said first remote method invocation layer to said second remote method invocation layer via the first message data structure on said first processing device and the second message data structure on said second processing device, using the corresponding message routing software components and message compression software components.

10. The method of claim 9 wherein said first virtual machine is a first Java virtual machine, and said first message routing data structure is a first remote Java virtual machine, and wherein second virtual machine is a second Java virtual machine, and said second message routing data structure is a second remote Java virtual machine.

11. The method of claim 9, wherein said first message data structure further comprises a first peer gone detection software component to detect if the second virtual machine is alive.

12. The method of claim 11, wherein said second message data structure further comprises a second peer gone detection software component to detect if the first virtual machine is alive.

13. The method of claim 9, wherein said first message data structure further comprises a first peer gone detection software component to detect if the second processing device is alive.

14. A method of communication between processing devices in a cluster, comprising the steps of:

providing a first processing device, having a first virtual machine executing thereon, a first remote method invocation layer, and a first kernel that includes a first message routing data structure corresponding to a second virtual machine executing at a second processing device, wherein the first kernel and the first remote method invocation layer operate above the first virtual machine layer;

providing the second processing device, having said second virtual machine executing thereon, a second remote method invocation layer, and a second kernel that includes a second message routing data structure corresponding to the first virtual machine executing at said first processing device, and a third message routing data structure corresponding to a third virtual machine executing at a third processing device, wherein the second kernel and the second remote method invocation layer operate above the second virtual machine layer;

providing the third processing device, having said third virtual machine executing thereon, a third remote method invocation layer, and a third kernel that includes a fourth message routing data structure corresponding to the second virtual machine executing at said second processing device, wherein the third kernel and the third remote method invocation layer operate above the third virtual machine layer; and

,

wherein a message is transferred from said first remote method invocation layer to said third remote method invocation layer via the first message routing data structure on said first processing device, the second message routing data structure on said second processing device, the third message routing data structure on said second processing device, and the fourth message routing data structure on said third processing device.

15. An article of manufacture, comprising:

a first processing device, having a first virtual machine executing thereon, a first remote method invocation layer, and a first kernel that includes a first message data structure corresponding to a second virtual machine executing at a second processing device, wherein the first message data structure comprises a first message routing software component and a first message compression software component, wherein the first kernel and the first remote method invocation layer operate above the first virtual machine layer;

a second processing device, having said second virtual machine executing thereon, a second remote method invocation layer, and a second kernel that includes a second message data structure corresponding to the first virtual machine executing at said first processing device, wherein the second message data structure comprises a second message routing software component and a second message compression software component, wherein the second kernel and the second remote method invocation layer operate above the second virtual machine layer; and

,

wherein a message is transferred from said first remote method invocation layer to said second remote method invocation layer via the first message data structure on said first processing device and the second message data structure on said second processing device, using the corresponding message routing software components and message compression software components.

16. A computer readable medium including instructions stored thereon which when executed cause the computer to perform the steps of:

providing a first processing device with a first virtual machine executing thereon, a first remote method invocation layer, and a first kernel that includes a first message data structure corresponding to a second virtual machine executing at a second processing device, wherein the first message data structure comprises a first message routing software component and a first message compression software component, wherein the first kernel and the first remote method invocation layer operate above the first virtual machine layer;

providing the second processing device with said second virtual machine executing thereon, a second remote method invocation layer, and a second kernel that includes a second message data structure corresponding to the first virtual machine executing at said first processing device, wherein the second message data structure comprises a second message routing software component and a second message compression software component, wherein the second kernel and the second remote method invocation layer operate above the second virtual machine layer; and

,

transferring a message from said first remote method invocation layer to said second remote method invocation layer via the first message data structure on said first processing device and the second message data structure on said second processing device, using the corresponding message routing software components and message compression software components.

17. A system for communication between processing devices in a cluster, comprising:

a first processing device, having a first virtual machine executing thereon, a first remote method invocation layer, and a first kernel that includes a first message data structure corresponding to a second virtual machine executing at a second processing device, wherein the first message data structure comprises a first message routing software component and a peer gone detection software component, wherein the first kernel and the first remote method invocation layer operate above the first virtual machine layer;

a second processing device, having said second virtual machine executing thereon, a second remote method invocation layer, and a second kernel that includes a second message data structure corresponding to the first virtual machine executing at said first processing device, wherein the second message data structure comprises a second message routing software component and a second peer gone detection software component, wherein the second kernel and the second remote method invocation layer operate above the second virtual machine layer; and

,

wherein a message is transferred from said first remote method invocation layer to said second remote method invocation layer via the first message data structure on said first processing device and the second message data structure on said second processing device, using the corresponding message routing software components and peer gone detection software components.