Towards a Model Level Replication Technique for Fault Tolerant Systems Using AADL

摘要

The replication, a technique widely used for fault tolerance purposes, is defined as the redundancy of software, hardware or both units and their consideration in the execution of the application. In this paper, we propose a new technique to design replication using the AADL language and its extensibility with property sets. We choose AADL to take advantage of its strong semantics at architecture level. We enable the designer to model his application using AADL and to enrich it with the property set Replication_Properties. We defined this property set to describe the adopted concepts of replication. Then, based on a set of transformation rules, we generate an intermediate AADL model enriched with different replicas. Currently, we are extending the Ocarina tool suite to support automatic generation of the target model.