Application splitting for network edge computing

• US 7,634,755 B2
• Filed: 07/13/2004
• Issued: 12/15/2009
• Est. Priority Date: 07/13/2004
• Status: Active Grant

• Current Assignee: International Business Machines Corporation, ServiceNow Incorporated
• Original Assignee: International Business Machines Corporation
• Inventors: Polozoff, Alexandre
• Primary Examiner(s): Bullock, Jr.; Lewis A.
• Assistant Examiner(s): Wang; Jue S
• Application Number:
  US10/889,777
• Publication Number:
  US 20060015849A1
• Time in Patent Office: 1,981 Days
• Field of Search: 709/226, 717/106
• US Class Current: 717/106
• CPC Class Codes: G06F 8/70 Software maintenance or management

Abstract

Application splitting for network edge computing including identifying an application split point; identifying a split type for the application split point; splitting the application into subcomponents in accordance with the split type; and moving a subcomponent to an edge network. Identifying an application split point may include identifying a class of the application that calls an EJB. Identifying an application split point may include identifying a class of the application that updates an enterprise database. Identifying an application split point may include identifying a class of the application that calls a JCA function. Identifying a split type for the application split point may include identifying a silo split type for the application split point. Identifying a split type for the application split point may include identifying an EJB split type for the application split point.

Claims

1. A method for application splitting for network edge computing, the method comprising:

identifying an application split point;

identifying a split type for the application split point including identifying a silo split type, an EJB split type, and facade split type for the application split point;

splitting the application into subcomponents in accordance with the split type, including;

checking that each class to be included in a subcomponent is serializable;

checking for the presence of classes that maintain stateful data which may usefully be maintained in more than one subcomponent; and

if any classes are present that maintain stateful data which may usefully be maintained in more than one subcomponent, inserting glue classes and calls to glue classes to assure that the stateful data is made available as needed; and

moving a subcomponent to an edge network.

2. The method of claim 1 wherein identifying an application split point further comprises identifying a class of the application that calls an EJB.

3. The method of claim 1 wherein identifying an application split point further comprises identifying a class of the application that updates an enterprise database.

4. The method of claim 1 wherein identifying an application split point further comprises identifying a class of the application that calls a JCA function.

5. The method of claim 1 wherein:

the application split point comprises a class in a calling hierarchy that calls an EJB;

the split type comprises an EJB split type;

splitting the application into subcomponents in accordance with the split type further comprises splitting the classes in the calling hierarchy into a client RMI module and a server RMI module; and

moving a subcomponent to an edge network further comprises moving the client RMI module to the edge network.

6. The method of claim 1 wherein:

the application split point comprises a class in a calling hierarchy that calls an EJB;

the split type comprises an EJB split type;

splitting the application into subcomponents in accordance with the split type further comprises splitting the classes in the calling hierarchy into a client web services module and a server web services module; and

moving a subcomponent to an edge network further comprises moving the client web services module to the edge network.

7. The method of claim 1 wherein:

the application split point comprises a class in a calling hierarchy that updates an enterprise database;

the split type comprises a silo split type;

splitting the application into subcomponents in accordance with the split type further comprises aggregating as one subcomponent all the classes in the calling hierarchy into a silo module; and

moving a subcomponent to an edge network further comprises moving the silo module to the edge network.

8. The method of claim 1 wherein:

the application split point comprises a class in a calling hierarchy that calls an EJB and calls an HTTP function;

the split type comprises a silo split type;

splitting the application into subcomponents in accordance with the split type further comprises aggregating as one subcomponent all the classes in the calling hierarchy into a silo module; and

moving a subcomponent to an edge network further comprises moving the silo module to the edge network.

9. The method of claim 1 wherein:

the application split point comprises a class in a calling hierarchy that calls a JCA function and calls an HTTP function;

the split type comprises a silo split type;

splitting the application into subcomponents in accordance with the split type further comprises aggregating as one subcomponent all the classes in the calling hierarchy into a silo module; and

moving a subcomponent to an edge network further comprises moving the silo module to the edge network.

10. The method of claim 1 wherein:

the application split point comprises a class in a calling hierarchy that is listed more than once as a potential split point;

the split type comprises a facade split type;

splitting the application into subcomponents in accordance with the split type further comprises splitting the classes in the calling hierarchy into a client web services module and a server web services module; and

moving a subcomponent to an edge network further comprises moving the client web services module to the edge network.

11. A system for application splitting for network edge computing, the system comprising a computer processor and a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer program instructions capable, when executed, of causing the processor to carry out the steps of:

identifying an application split point;

identifying a split type for the application split point including identifying a silo split type, an EJB split type, and a facade split type for the application split point;

splitting the application into subcomponents in accordance with the split type, including;

checking that each class to be included in a subcomponent is serializable;

checking for the presence of classes that maintain stateful data which may usefully be maintained in more than one subcomponent; and

if any classes are present that maintain stateful data which may usefully be maintained in more than one subcomponent, inserting glue classes and calls to glue classes to assure that the stateful data is made available as needed; and

moving a subcomponent to an edge network.

12. The system of claim 11 wherein identifying an application split point further comprises identifying a class of the application that calls an EJB.

13. The system of claim 11 wherein identifying an application split point further comprises identifying a class of the application that updates an enterprise database.

14. The system of claim 11 wherein identifying an application split point further comprises identifying a class of the application that calls a JCA function.

15. The system of claim 11 wherein:

the application split point comprises a class in a calling hierarchy that calls an EJB;

the split type comprises an EJB split type;

splitting the application into subcomponents in accordance with the split type further comprises splitting the classes in the calling hierarchy into a client RMI module and a server RMI module; and

moving a subcomponent to an edge network further comprises moving the client RMI module to the edge network.

16. A computer program product for application splitting for network edge computing, the computer program product disposed upon a computer-readable recording medium, the computer program product comprising computer program instructions capable, when executed, of causing automated computing machinery to carry out the steps of:

identifying an application split point;

identifying a split type for the application split point including identifying a silo split type, an EJB split type, and a facade split type for the application split point;

splitting the application into subcomponents in accordance with the split type, including;

checking that each class to be included in a subcomponent is serializable;

checking for the presence of classes that maintain stateful data which may usefully be maintained in more than one subcomponent; and

if any classes are present that maintain stateful data which may usefully be maintained in more than one subcomponent, inserting glue classes and calls to glue classes to assure that the stateful data is made available as needed; and

for moving a subcomponent to an edge network.

17. The computer program product of claim 16 wherein:

the application split point comprises a class in a calling hierarchy that calls an EJB;

the split type comprises an EJB split type;

splitting the application into subcomponents in accordance with the split type further comprises splitting the classes in the calling hierarchy into a client RMI module and a server RMI module; and

moving a subcomponent to an edge network further comprises moving the client RMI module to the edge network.

18. The computer program product of claim 16 wherein:

the application split point comprises a class in a calling hierarchy that calls an EJB;

the split type comprises an EJB split type;

splitting the application into subcomponents in accordance with the split type further comprises splitting the classes in the calling hierarchy into a client web services module and a server web services module; and

moving a subcomponent to an edge network further comprises moving the client web services module to the edge network.

19. The computer program product of claim 16 wherein:

the application split point comprises a class in a calling hierarchy that updates an enterprise database;

the split type comprises a silo split type;

splitting the application into subcomponents in accordance with the split type further comprises aggregating as one subcomponent all the classes in the calling hierarchy into a silo module; and

moving a subcomponent to an edge network further comprises moving the silo module to the edge network.

20. The computer program product of claim 16 wherein:

the application split point comprises a class in a calling hierarchy that calls an EJB and calls an HTTP function;

the split type comprises a silo split type;

splitting the application into subcomponents in accordance with the split type further comprises aggregating as one subcomponent all the classes in the calling hierarchy into a silo module; and

moving a subcomponent to an edge network further comprises moving the silo module to the edge network.

21. The computer program product of claim 16 wherein;

the application split point comprises a class in a calling hierarchy that calls a JCA function and calls an HTTP function;

the split type comprises a silo split type;

splitting the application into subcomponents in accordance with the split type further comprises aggregating as one subcomponent all the classes in the calling hierarchy into a silo module; and

moving a subcomponent to an edge network further comprises moving the silo module to the edge network.

22. The computer program product of claim 16 wherein:

the application split point comprises a class in a calling hierarchy that is listed more than once as a potential split point;

the split type comprises a facade split type;

splitting the application into subcomponents in accordance with the split type further comprises splitting the classes in the calling hierarchy into a client web services module and a server web services module; and

moving a subcomponent to an edge network further comprises moving the client web services module to the edge network.