Towards Re-engineering Legacy Systems for Assured Dynamic Adaptation
MISE '07 Proceedings of the International Workshop on Modeling in Software Engineering
Applying Digital Evolution to the Development of Self-Adaptive ULS Systems
ULS '07 Proceedings of the International Workshop on Software Technologies for Ultra-Large-Scale Systems
A self-healing web server using differentiated services
ICSOC'06 Proceedings of the 4th international conference on Service-Oriented Computing
| Hi-index | 0.00 |
Increasingly, software systems are constructed by composing multiple existing applications. The resulting complexity increases the need for self-management of the system. However, adding autonomic behavior to composite systems is difficult, especially when the existing components were not originally designed to support such interactions. Moreover, entangling the code for integrated self-management with the code for the business logic of the original applications may actually increase the complexity of the system, counter to the desired goal. In this paper, we propose a technique to enable self-managing behavior to be added to composite systems transparently, that is, without requiring manual modifications to the existing code. The technique uses transparent shaping, developed previously to enable dynamic adaptation in existing programs, to weave self-managing behavior into existing applications, which interact through Web services. A case study demonstrates the use of this technique to construct a fault-tolerant surveillance application from two existing applications, one developed in .NET and the other in CORBA, without the need to modify the source code of the original applications.