Wyniki wyszukiwania - BazTech

1

Transformacja diagramu aktywności UML w przepływ integracyjny BPEL

Górski T., Ziemski G.

Biuletyn Wojskowej Akademii Technicznej

|

2018

|

Vol. 67, nr 3

15--45

PL

Rosnące zainteresowanie firm integracją oraz interoperacyjnością systemów informatycznych spowodowało wzrost znaczenia architektury usługowej (ang. Service-Oriented Architecture), która zapewnia narzędzia umożliwiające integrację aplikacji korporacyjnych (ang. Enterprise Application Integration). W tym sensie magistrala usług (ang. Enterprise Service Bus) zapewnia techniczne możliwości komunikacji między systemami informatycznymi. Kluczowym elementem w tej komunikacji są przepływy integracyjne. Cel: Celem artykułu jest przedstawienie nowej transformacji Integration2BPEL, która automatyzuje konstrukcję wykonywalnego przepływu integracyjnego wyrażonego w języku Web Services Business Process Execution Language (BPEL) na podstawie modelu tego przepływu przedstawionego na diagramie aktywności języka Unified Modeling Language (UML). Metoda: Autorzy proponują transformację typu model-to-code generującą przepływ integracyjny wyrażony w BPEL, który może być uruchamiany w dowolnym silniku procesów BPEL. Przepływ integracyjny modelowany jest za pomocą diagramu aktywności języka UML z użyciem stereotypów z profilu „UML Profile for Integration Flows” w środowisku IBM Rational Software Architect (RSA). Przy zastosowaniu transformacji Integration2BPEL generowany jest kompletny, wykonywalny przepływ integracyjny złożony z wielu mechanizmów mediacyjnych. Wygenerowany przepływ integracyjny uruchamiany był na magistrali usług OpenESB. Wyniki: Możliwość generacji kompletnego przepływu integracyjnego w BPEL, który bez żadnych uzupełnień może być uruchamiany na magistrali usług. Zautomatyzowana została faza implementacji przepływu integracyjnego. Każdy z przepływów integracyjnych implementowany jest według takich samych zasad. Ponadto, unika się dzięki temu błędów popełnianych przez projektantów i programistów. Wnioski: Wytwarzanie oprogramowania sterowane modelami (ang. Model-Driven Development) jest podejściem, które może prowadzić do automatyzacji fazy projektowania i programowania. Uzyskuje się wprowadzenie jednolitego mechanizmu konstrukcji przepływu integracyjnego.

EN

The growing interest of companies in integration and interoperability between information systems has caused increase in significance of Service-Oriented Architecture which provides tools for Enterprise Application Integration. In that architecture, Enterprise Service Bus provides technical possibilities of communication between IT systems. A key element in the communication are integration flows. Objective: The aim of this article is to present a new transformation Integration2BPEL, which automates the development of executable integration flow expressed in the Web Services Business Process Execution Language (WS-BPEL) based on the model of the integration flow presented in the Unified Modelling Language (UML) activity diagram. Method: The author proposes a transformation of the type of model-to-code type which generates integration flow expressed in WS-BPEL, which can be executed in any BPEL-compliant process engine. The integration flow is modelled using UML activity diagram with stereotypes from ‘UML Profile for Integration Flows’ profile in an IBM Rational Software Architect (RSA). Using Integration2BPEL transformation a complete, executable integration flow is generated, which is composed of many mediation mechanisms. Generated integration flows have been executed on OpenESB. Results: The ability to generate a complete integration flow in BPEL, which without any additions can be run on enterprise service bus. Implementation phase of an integration flow construction was automated. Each of integration flows is implemented according to the same rules. In addition, it allows to avoid mistakes made by designers and programmers. Conclusions: Model-Driven Development is an approach that leads to the automation of the design and programming phases. Integration2BPEL transformation is a uniform mechanism to design integration flow. Potentially, it also allows to avoid implementation errors.

2

Performance analysis of Enterprise Service Buses

Górski T., Pietrasik K.

Journal of Theoretical and Applied Computer Science

|

2016

|

Vol. 10, nr 2

16--32

EN

The growing interest in business integration and interoperability of IT systems has led to an increase in the importance of Service-Oriented Architecture (SOA), which provides tools for Enterprise Application Integration (EAI). In this sense, Enterprise Service Bus (ESB) provides technical capabilities for communication between IT systems. The aim of this arti-cle is to present the results of performance tests of selected open-source enterprise service buses. The integration solution performance analysis is based on a business case of an or-der execution in the Internet shop of an electronics retailer. The order realisation requires a collaboration of three IT systems. The business case has been implemented using each se-lected ESB individually: WSO2, Mule and Talend. Test scenarios were defined and perfor-mance tests were conducted for each of the three selected ESBs. The results obtained show that each service bus has its own strengths and weaknesses. As regards strengths, it should be noted that WSO2 copes very well with files of small size, for small number of users, and also it does not put an excessive load on the CPU. Talend ESB performs well with both kinds of files, small and large sizes, for large number of users, but puts the greatest load on the CPU. Results show that it is worth to analyse parameters of transmitted messages while selecting ESB for building integration solution. Talend ESB proves to be a good choice for construction of integration solution in a business environment with a large number of users and diversified communications. Talend ESB increases the processor usage according to the message transmission needs. It absorbs the processor more, thereby ensuring predicta-ble message transmission times.

3

The use of Enterprise Service Bus to transfer large volumes of data

Górski T.

Journal of Theoretical and Applied Computer Science

|

2014

|

Vol. 8, nr 4

72--81

EN

The paper presents an application of Enterprise Service Bus (ESB) to handle transfer of large volumes of data between IT systems. The use of ESB may affect the reduction of operating costs of the public entity minimizing the number of connections between systems, shortening the time of integration with external systems and increasing the reusability of software written. The design of integration was done according to the ‘1+5’ architectural views model adjusted to the integration solutions description. The previously proposed UML profile UML Profile for Integration Platform has been used. We present the solution, on a specific case study of Agricultural and Food Quality Inspection (AFQI) (www.ijhars.gov.pl), showing how fast data can be transferred electronically using an ESB. Finally, benefits of the solution were analysed in the context of the reduced time of data transfer.

4

Combining Service-Oriented and Event-Driven Architectures for Designing Dependable Systems

Lodi G., Querzoni L, Beraldi R., Baldoni R.

Foundations of Computing and Decision Sciences

|

2010

|

Vol. 35, No. 2

78-90

EN

Up to now Service Oriented Architectures and Event Driven Architectures have been considered as competing parties striving to conquer the crown of the standard paradigm for the implementation of complex distributed applications. Todays we are witnesses of large efforts to merge both paradigms and give birth to a new generation of middleware platforms that will inherit the best of both worlds. In this paper we describe how this marriage could be leveraged in order to design new dependable software systems.