Time delay fault tracing approach for service composition based on propagation mechanism network
In the dynamic and changeable cloud environment,the probability of time delay fault of service composition increases greatly.Time delay fault is a typical failure mode.Due to the intricate interaction between services,the fault may propagate in the service composition,making fault detection and location difficult.Therefore,a time delay fault tracing approach for service composition based on propagation mechanism network is proposed.According to the interaction relationships of services,the fault propagation network model is established to describe the propagation mechanism of time delay fault.After that,the fault tracing algorithm based on both global fault propagation influence and local path dichotomy is designed to realize efficient and accurate fault source location without the need to obtain all services metrics.It reduces the cost of fault tracing.Finally,both the effectiveness and the advancement of the approach are verified by the experiments of service composition of elevator traction rope design.
service compositioncomplex networktime delay faultfault tracingfault propagation
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