Adaptação de serviços web para a personalização de alertas precoces em agricultura

Early warning systems are designed to inform the largest number of users, such as a country or a region, about a risky situation. However, in specific domains such as agriculture, it is commonly required for these alerts to be more specific according to the crops location and their properties. Consequently, the web services of these systems must be adapted. On the other hand, the enterprise services bus, with its mediation capabilities (such as message transformation and routing), and complex event processing with their monitoring characteristics, can be integrated to meet the adaptation requirements of web services at runtime. This paper presents an improvement for an early warning system for coffee production that, according to the area in which a crop is located and its phenology, manages the adaptation of alerts for coffee rust, based on the integration of an enterprise services bus and a complex events processing.Los sistemas de alerta temprana están diseñados para informar a un gran número de usuarios —un país o  na región— sobre una situación de riesgo. Sin embargo, en dominios específicos como la agricultura suele requerirse que estos sean más específicos, de acuerdo con la ubicación del cultivo y sus propiedades. Por lo tanto, los servicios web de estos sistemas requieren adaptarse. Así mismo, el bus de servicios empresariales con sus capacidades de mediación, así como el procesamiento de eventos complejos con sus características de monitorización, pueden integrarse para cumplir con los requisitos de adaptación de los servicios web en tiempo de ejecución. Este articulo presenta la adaptación de los servicios web de acuerdo con la ubicación de un cultivo y su fenología, manejando la adaptación de alertas  ara la roya en el café, con base en la integración del bus de servicios empresariales y el procesamiento de eventos complejos. Os sistemas de alerta precoce estão desenhados para informar a um grande número de usuários —um país ou uma região— sobre uma situação de risco. No entanto, em domínios específicos como a agricultura costuma-se requerer que estes sejam mais específicos, de acordo com a localização do cultivo e suas propriedades. Portanto, os serviços web desses sistemas requerem adaptar-se. Desse modo, o Enterprise Service Bus com suas capacidades de mediação, bem como o processamento de eventos complexos com suas características de monitoramento podem ser integrados para cumprir os requisitos de adaptação dos serviços web em tempo de execução. Este artigo apresenta a adaptação dos serviços web de acordo com a localização de um cultivo e sua fenologia, gerenciando a adaptação de alerta para a ferrugem no café, com base na integração do Enterprise Service Bus e o processamento de eventos complexos.&nbsp

An Event-Driven Integration Platform for Context-Aware Web Services

Abstract: Web services are nowadays one of the preferred technologies to implement serviceoriented architectures and to communicate distributed applications. On the other hand, contextawareness is highly demanded for distributed applications. However, even though there are excellent tools and frameworks for service development, getting services to be context-aware is still under investigation. In turn, an Enterprise Service Bus (ESB) is a standards-based integration platform, which provides mediation capabilities (e.g. routing, transformation). ESBs are being increasingly used in conjunction with Complex Event Processing (CEP) engines to support event-driven architectures scenarios. In this regard, this paper proposes an ESB-based integration platform which, leveraging its mediation capabilities and a CEP engine, allows the construction of context-aware web services. Concretely, CEP techniques are used to detect the complex situations that may affect services and mediation mechanisms are used to adapt service requests and responses to make them context-aware