Detecção e recuperação de falhas para a máquina de redução de grafos PEWS-AM
Web services are software units that allow access to one or more resources, supporting the deployment of business processes in the Web. They use well-defined interfaces, using web standard protocols, making possible the communication between entities implemented on different platforms. Due to these...
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| Formato: | Dissertação |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/18102 |
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| Resumo: | Web services are software units that allow access to one or more resources, supporting the
deployment of business processes in the Web. They use well-defined interfaces, using web
standard protocols, making possible the communication between entities implemented
on different platforms. Due to these features, Web services can be integrated as services
compositions to form more robust loose coupling applications. Web services are subject
to failures, unwanted situations that may compromise the business process partially or
completely. Failures can occur both in the design of compositions as in the execution of
compositions. As a result, it is essential to create mechanisms to make the implementation
of service compositions more robust and to treat failures. Specifically, we propose the support
for fault recovery in service compositions described in PEWS language and executed
on PEWS-AM, an graph reduction machine. To support recovery failure on PEWS-AM,
we extend the PEWS language specification and adapted the rules of translation and
reduction of graphs for this machine. These contributions were made both in the model
of abstract machine as at the implementation level |
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