STATEFUL COMPONENT AUTHORING AND EXECUTION

• US 20120260227A1
• Filed: 04/05/2011
• Published: 10/11/2012
• Est. Priority Date: 04/05/2011
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Shukla, Dharma, Sagar, Akash Jeevan, Talbert, Nathan C., Annamalai, Muthukaruppan, Schmidt, Robert B., Bhandarkar, Aditya, Jawahar, Asad
• Granted Patent: US 9,465,589 B2
• Time in Patent Office: Days
• US Class Current: 717/104
• CPC Class Codes: G06F 8/20 Software design
• CPC Class Codes: G06F 8/35 model driven

Abstract

A method for of authoring and executing stateful components for a distributed application is disclosed. An application schema for the distributed application is declaratively defined and includes a plurality of distributed modules. Each module hosts a set of stateful components co-located in a physical tier of a distributed environment having logic to manipulate state. The runtime supports partitioning the stateful components. Control flow opaqueness of component logic is banished in each of the stateful components, which would otherwise occur if state was externalized.

Claims

1. A method of authoring and executing stateful components for a distributed application, the method comprising:

declaratively defining an application schema for the distributed application including a plurality of distributed modules, wherein each module hosts a set of stateful components co-located in a physical tier of a distributed environment having logic to manipulate state;

providing runtime support of partitioning the stateful components into partitions; and

banishing control flow opaqueness of component logic in each of the stateful components.

2. The method of claim 1 wherein the partitions are atomic.

3. The method of claim 1 wherein the partitions are mutually exclusive.

4. The method of claim 1 wherein the partitions are units of load balancing.

5. The method of claim 1 wherein a partition includes a backup replica.

6. The method of claim 5 wherein the backup replica is located on another physical tier.

7. The method of claim 1 wherein the stateful components provide a service, and clients address the service with a logical address.

8. The method of claim 7 wherein the logical address is resolved into a physical address at the client at runtime.

9. The method of claim 1 wherein control flow opaqueness occurs when state is externalized.

10. The method of claim 1 wherein the partitions are independent of each other and each partition receives a corresponding application domain.

11. The method of claim 1 wherein the application schema includes stateless components, wherein the stateless components are scaled with cloning.

13. The method of claim 1 wherein the stateful components are exclusive of components that externalize state.

14. The method of claim 13 wherein each statelful component includes an output of a request to the component that is a function of an input and data materialized in context of a previous request to the component.

15. The method of claim 1 wherein object-relational mapping is integrated with the stateful components.

16. A computer readable storage medium storing computer executable instructions for controlling a computing device to perform a method comprising:

providing an extensible framework for authoring and executing stateful components for a distributed application, wherein the providing comprises;

declaratively defining abstractions in an application schema for the distributed application including a plurality of distributed modules, wherein each module hosts a set of stateful components co-located in a physical tier of a distributed environment having logic to manipulate state;

providing runtime support of partitioning the stateful components into partitions; and

banishing control flow opaqueness of component logic in each of the stateful components.

17. The computer readable medium of claim 16 wherein the plurality of distributed modules provide partition-aware routing.

18. The computer readable medium of claim 17 wherein the distributed application includes metadata regarding instance count.

19. The computer readable medium of claim 18 wherein the distributed application includes metadata regarding a partitioning policy and a replica count.

20. A method of authoring and executing stateful components for a distributed application, the method comprising:

providing an extensible framework for authoring and executing stateful components for a distributed application, wherein the providing comprises;

declaratively defining abstractions in an application schema for the distributed application including a plurality of distributed modules, wherein each module hosts a set of stateful components co-located in a physical tier of a distributed environment having logic to manipulate state;

providing runtime support of partitioning the stateful components into partitions according to definition constructs corresponding with the distributed modules wherein the definition constructs include metadata regarding instance count, partitioning policy, and replica count; and

wherein the stateful components are exclusive of components that externalize state.