A Arquitetura Orientada a Serviços (SOA) é um estilo arquitetural formado por um conjunto de restrições que visa promover a escalabilidade e a flexibilidade de um sistema, provendo suas funcionalidades como serviços. Nos últimos anos, um estilo alternativo foi proposto e amplamente adotado, que projeta as funcionalidades de um sistema como recursos. Este estilo arquitetural orientado a recursos é chamado de REST. O teste de serviços web em geral apresenta vários desafios devido a sua natureza distribuída, canal de comunicação pouco confiável, baixo acoplamento e a falta de uma interface de usuário. O teste de serviços RESTful (serviços que utilizam o REST) compartilham estes mesmos desafios e ainda necessitam que suas restrições sejam obedecidas. Estes desafios demandam testes mais sistemáticos e formais. Neste contexto, o teste baseado em modelos (TBM) se apresenta como um processo viável para abordar essas necessidades. O modelo que representa o sistema deve ser simples e ao mesmo tempo preciso para que sejam gerados casos de teste com qualidade. Com base nesse contexto, este projeto de mestrado propõe uma abordagem baseada em modelos para testar serviços RESTful. O modelo comportamental adotado foi a máquina de estados de protocolos UML, capaz de formalizar a interface do serviço enquanto esconde o seu funcionamento interno. Uma ferramenta foi desenvolvida para gerar automaticamente os casos de teste usando critérios de cobertura de estados e transições para percorrer o modelo / Service Oriented Architecture (SOA) is an architectural style consisting of a set of restrictions aimed at promoting the scalability and flexibility of a system, providing its functionalities as services. In recent years, an alternative style was proposed and widely adopted, which designs the system\'s functionalities as resources. This resource oriented architectural style is called REST. In general, the test of web services has several challenges due to its distributed nature, unreliable communication channel, low coupling and the lack of a user interface. Testing RESTful web services (services that use REST) share these same challenges and also need to obey the REST constraints. These challenges require a more systematic and formal testing approach. In this context, model based testing presents itself as a viable process for addressing those needs. The model that represents the system should be simple and precise enough to generate quality test cases. Based on this context, this work proposes a model based approach to test RESTful web services. The behavioral model used was the UML protocol state machine, which is capable to provide a formalization of the service interface, while hiding its internal behaviour. A tool was developed to automatically generate test cases using the state and transition coverage criteria to traverse the model

Na ultima década o paradigma de computação orientada a serviços (SOC - Service Oriented Computing) tem ganhado cada vez mais espaço na indústria e na academia, a fim de solucionar o problema da falta de comunicação entre os diversos sistemas de informação presentes dentro de um ambiente corporativo. Graças aos recentes avanços da chamada \"Web 2.0\" um novo estilo arquitetural chamado de Arquitetura orientada a Web (WOA - Web Oriented Architecture) foi proposto a fim de garantir uma maneira simples de conectar os componentes de software dinamicamente. Esse estilo tem como um dos princípios o uso de serviços Web RESTful, a fim de conseguir uma interface funcional simples e uniforme. Este trabalho apresenta um ambiente colaborativo de apoio ao desenvolvimento de serviços Web RESTful utilizando o paradigma de desenvolvimento orientado a modelos (MDD - Model Driven Development). Pretende-se mostrar os benefícios do MDD aplicado a Engenharia Web e também as vantagens apresentadas pela colaboração nesse cenário. Foi realizado ainda um experimento a fim de comprovar a eficiência do ambiente colaborativo e benefícios alcançados por ele / In the last decade the paradigm of Service Oriented Computing has gained more attention in industry and academia in order to solve the problem of lack of communication between different information systems present within a corporate environment. Due to recent advances in Web 2.0 a new architectural style called Web Oriented Architecture is proposed to ensure a simple way to connect software components dynamically. This style has as a principle the use of RESTful Web Services in order to achieve a uniform interface simple and functional. This paper presents a collaborative environment to support the development of RESTful Web Services using the Model Driven Development paradigm. It is intended to show the benefits of MDD applied to Web Engineering and also the advantages presented by collaboration in this scenario. It was also performed a experiment to prove the efficiency of the collaborative environment and benefits achieved by the same

A Arquitetura Orientada a Serviços (SOA) é um estilo arquitetural formado por um conjunto de restrições que visa promover a escalabilidade e a flexibilidade de um sistema, provendo suas funcionalidades como serviços. Nos últimos anos, um estilo alternativo foi proposto e amplamente adotado, que projeta as funcionalidades de um sistema como recursos. Este estilo arquitetural orientado a recursos é chamado de REST. O teste de serviços web em geral apresenta vários desafios devido a sua natureza distribuída, canal de comunicação pouco confiável, baixo acoplamento e a falta de uma interface de usuário. O teste de serviços RESTful (serviços que utilizam o REST) compartilham estes mesmos desafios e ainda necessitam que suas restrições sejam obedecidas. Estes desafios demandam testes mais sistemáticos e formais. Neste contexto, o teste baseado em modelos (TBM) se apresenta como um processo viável para abordar essas necessidades. O modelo que representa o sistema deve ser simples e ao mesmo tempo preciso para que sejam gerados casos de teste com qualidade. Com base nesse contexto, este projeto de mestrado propõe uma abordagem baseada em modelos para testar serviços RESTful. O modelo comportamental adotado foi a máquina de estados de protocolos UML, capaz de formalizar a interface do serviço enquanto esconde o seu funcionamento interno. Uma ferramenta foi desenvolvida para gerar automaticamente os casos de teste usando critérios de cobertura de estados e transições para percorrer o modelo / Service Oriented Architecture (SOA) is an architectural style consisting of a set of restrictions aimed at promoting the scalability and flexibility of a system, providing its functionalities as services. In recent years, an alternative style was proposed and widely adopted, which designs the system\'s functionalities as resources. This resource oriented architectural style is called REST. In general, the test of web services has several challenges due to its distributed nature, unreliable communication channel, low coupling and the lack of a user interface. Testing RESTful web services (services that use REST) share these same challenges and also need to obey the REST constraints. These challenges require a more systematic and formal testing approach. In this context, model based testing presents itself as a viable process for addressing those needs. The model that represents the system should be simple and precise enough to generate quality test cases. Based on this context, this work proposes a model based approach to test RESTful web services. The behavioral model used was the UML protocol state machine, which is capable to provide a formalization of the service interface, while hiding its internal behaviour. A tool was developed to automatically generate test cases using the state and transition coverage criteria to traverse the model

Na ultima década o paradigma de computação orientada a serviços (SOC - Service Oriented Computing) tem ganhado cada vez mais espaço na indústria e na academia, a fim de solucionar o problema da falta de comunicação entre os diversos sistemas de informação presentes dentro de um ambiente corporativo. Graças aos recentes avanços da chamada \"Web 2.0\" um novo estilo arquitetural chamado de Arquitetura orientada a Web (WOA - Web Oriented Architecture) foi proposto a fim de garantir uma maneira simples de conectar os componentes de software dinamicamente. Esse estilo tem como um dos princípios o uso de serviços Web RESTful, a fim de conseguir uma interface funcional simples e uniforme. Este trabalho apresenta um ambiente colaborativo de apoio ao desenvolvimento de serviços Web RESTful utilizando o paradigma de desenvolvimento orientado a modelos (MDD - Model Driven Development). Pretende-se mostrar os benefícios do MDD aplicado a Engenharia Web e também as vantagens apresentadas pela colaboração nesse cenário. Foi realizado ainda um experimento a fim de comprovar a eficiência do ambiente colaborativo e benefícios alcançados por ele / In the last decade the paradigm of Service Oriented Computing has gained more attention in industry and academia in order to solve the problem of lack of communication between different information systems present within a corporate environment. Due to recent advances in Web 2.0 a new architectural style called Web Oriented Architecture is proposed to ensure a simple way to connect software components dynamically. This style has as a principle the use of RESTful Web Services in order to achieve a uniform interface simple and functional. This paper presents a collaborative environment to support the development of RESTful Web Services using the Model Driven Development paradigm. It is intended to show the benefits of MDD applied to Web Engineering and also the advantages presented by collaboration in this scenario. It was also performed a experiment to prove the efficiency of the collaborative environment and benefits achieved by the same

Made available in DSpace on 2014-07-29T14:57:49Z (GMT). No. of bitstreams: 1 Dissertacao Otavio C Xavier.pdf: 2295906 bytes, checksum: f43ea2a633498324e92187e3bd263ab4 (MD5) Previous issue date: 2011-09-26 / The researches on Semantic Web Services are aimed, mostly, the SOAP architecture. This architecture is rarely used in Web 2.0 and therefore in Online Social Networks. This dissertation presents an approach for practical implementation of semantic descriptions in RESTfulWeb Services. It is a simplified architecture that gained much focus onWeb 2.0, increasingly replacing the SOAP architecture. The development of the tool, presented here, will fill a gap in the process of implanting the Semantic Web. Existing solutions expose a theoretical view and have no practical implementations. The solution proposed in this paper, relates existing standards and technologies to develop an integrated and free tool. From which, services of a popular Online Social Network are described. Finally, the automatic discovery, composition and invocation of such services are made. / As pesquisas acerca de Serviços Web Semânticos são voltadas, em sua grande maioria, à arquitetura SOAP. Esta arquitetura é pouco utilizada na Web 2.0 e, logo, em Redes Sociais Online. Este trabalho apresenta uma abordagem para implementação prática de descrição semântica em Serviços Web, baseados na arquitetura REST. Trata-se de uma arquitetura simplificada e que ganhou muito enfoque na Web 2.0, substituindo cada vez mais a arquitetura SOAP. O desenvolvimento da ferramenta, apresentada aqui, poderá preencher uma lacuna no processo de implantação da Web Semântica. As soluções existentes expõem uma visão teórica do assunto e não possuem implementações práticas. A solução proposta neste trabalho, relaciona padrões e tecnologias já existentes para o desenvolvimento de uma ferramenta livre e integrada. A partir dela, serviços de uma Rede Social Online popular são descritos. Por fim, é mostrado como realizar a descoberta, composição e invocação automatizada de tais serviços.

This thesis deals with the development of a client-server application for Red Hat company. Client participates in testing process of JBoss platform and gets user-defined performance data which sends during testing to the server application by platform independent communication. The server application allows to analyze the received data which can be also compared by several perspectives. These services for data analysis and comparison are accessible for server users using the web client. The server application supports the import of the performance data stored in the XML file and also their export for qVue portal. The client part of the application is implemented in Java and the server application is based on Java EE platform.

The emerging Blockchain technology has the potential to shift the traditional centralized systems to become more flexible, efficient and decentralized. An important area to apply this capability is supply chain. Supply chain visibility and transparency has become an important aspect of a successful supply chain platform as it becomes more complex than ever before. The complexity comes from the number of participants involved and the intricate roles and relations among them. This puts more pressure on the system and the customers in terms of system availability and tamper-resistant data. This thesis presents a private and permisioned application that uses Blockchain and aims to automate the shipping processes among different participants in the supply chain ecosystem. Data in this private ledger is governed with the participants’ invocation of their smart contracts. These smart contracts are designed to satisfy the participants’ different roles in the supply chain. Moreover, this thesis discusses the performance measurements of this application results in terms of the transaction throughput, transaction average latency and resource utilization. / Graduate

In the African continent the mobile phones are already contributing theirshare in the development of the continent. Specially in Ethiopia, in onedirection, the users of mobile phones are increasing each year and mostimportantly the small scale farmers who contribute 85% of the country’spopulation are using these devices to trade their surplus products in anefficient manner and better deal thus earn good profit. In anotherdirection, Ethiopia has set up its own Commodity Exchange in 2008 sothat farmers and traders could buy and sell commodities in an efficientand transparent manner. Taking into consideration both of thesedevelopments carried out to encourage smooth trade and modernmarking strategies, this project has a target to come up with mobileapplications for the Android mobile platform and iPhone users in the firstphase of implementation. Accordingly, the app developed will help to getreal time Ethiopia commodity Exchange (ECX) market prices, commodityrelated headlines, weather forecasts and other relevant news. It willcontribute to standardize the way ECX is performing to link up differentparties specially farmers who make up majority of the country’spopulation and support the economy of the country in a great deal withthe traders. Although the mobile app developed does not have an aim tobring in significant change into the existing system at the currentpenetration of Smartphone in the country, it helps to disseminateinformation in standardized manner as in big commodity exchanges andbesides, we believe in the future it will be the convenient and widely usedmeans to reach the traders with necessary information.

The ability to reach a wider public using the Internet has brought the world a wide varietyof online retailers offering their customers to purchase almost anything from the comfortof their home. With this increase in online retailing, a need for automation has been developedby the users. To be able to decrease the administrative tasks to a bare minimum allowsretailers to focus on their core business instead. With this new request for automation, businesssystems are becoming more and more popular and to be able to integrate the web sitewith a business system results in lower administrative workload. A variety of systems arealready available for the public to use for integrating a web shop to a number of differentbusiness systems. These systems are however often restrictive and will provide a frameworkfor developing the web shop themselves. One web content management system that lacksthis kind of support is SiteVision. On behalf of Soleil IT, a Proof of Concept was developedto investigate the feasibility of integrating a web shop developed in SiteVision, with a businesssystem for automation of administrative tasks. The implementation included featuressuch as retrieving products from the business system and displaying them on the web site,and the ability to purchase a set of products which should generate an order in the businesssystem. RESTful web services was used to transmit data between the business system andthe web shop. This project resulted in a successful integration of the business system VismaAdministration and a web shop developed in SiteVision. The project showed the feasibilityof performing such an integration and also exposed any restrictions that the setup may have.

The aim of the graduation thesis is to evaluate the current development in the field of SDN and the possibility of programmability of SDN elements using the application programming interface. The first theoretical chapter describes the following: the basic architecture of SDN, the traffic within SDN between its individual layers, the communication protocols Southbound interface and Northbound interface. The second chapter of the thesis deals with the programmability of SDN elements with the help of API. The third theoretical chapter describes the current development in the field of SDN. The practical part of the thesis is devoted to creation of two laboratory tasks dealing with the programming of the SDN API. Laboratory tasks include BIG-IP programming from F5 Network and routers from Arista Network. Programming is done using Python via REST API for BIG-IP, or eAPI for Arista EOS. The Ansible setup tool is also used for the same purpose.