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WSO2 Enterprise Integrator: Business Process Innovation - Part 2

3 min read

WSO2 Enterprise Integrator: Business Process Innovation - Part 2 | Yenlo blogIn the first part of this blog series, I covered the four-eyes principle in a nutshell, and Business Process Modelling and Notation (BPMN) models represent that principle. In this second blog, I will go into the features of the Business Process Server (BPS) profile that enables it to execute the BPMN models, the code behind the models and WSO2 Enterprise Integrator (WSO2 EI) tooling.

WSO2 EI BPS profile

As the documentation states, the BPS is capable of the following:

  • Executing business workflows compliant with BPMN, Web Services Business Process Execution Language (WS-BPEL) and Web Services Human Task (WS-HumanTask) specifications;
  • Facilitating workflows with heterogeneous enterprise services and human interactions;
  • Modeling, deploying, managing and monitoring workflows.

Activiti powers the BPS for BMPN execution and Apache ODE does that for BPEL execution. The BPS capabilities are Incorporated as a profile into the WSO2 Enterprise Integrator.

WSO2 EI tooling

WSO2 EI tooling documentation states that it provides user-friendly, configuration-driven capabilities. Eclipse’s integrated development environment is the inspiration for the WSO2 EI tooling. It is a simple graphical editor ideal for developing and managing services, features and artifacts. Figure 1 depicts the user interface of WSO2 EI Tooling.

WSO2 Enterprise Integrator Tooling Dashboard

Figure 1: WSO2 EI Tooling Dashboard

Review process code

Below is an image of the source code of the four-eyes principle as presented in the first part of this blog series. As stated in that blog post, Activiti engine executes BPMN models in the BPS profile. This role of Activiti is evident in figure 2, by the namespace declaration and the prefix activiti for the start event extension elements.

Four-eyes principle

Figure 2: Four-eyes principle

First review process

Figure 3: First review process

Exception code

Exception handling process

Figure 4: Exception handling process

Conclusion

In this post, the re-use of existing WSO2 knowledge, as suggested in the first part of this blog series, becomes clear. The XML know-how of a technical team is still relevant and therefore the learning curve is minimized.

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Published September 10, 2020

Philip Akyempon

Philip is a Senior Integration Consultant. He has more than eight years experience in software development and systems integration. At Yenlo, he implements service-oriented architecture (SOA) solutions using WSO2 technology. Philip is specialized in WSO2 API, WSO2 ESB, WSO2 BPS and WSO2 DSS. Besides these technical skills, he is passionate regarding the benefit of IT professionalism within organizations and is certified in ArchiMate 2.1 and TOGAF 9.

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