scholarly journals A Service-Oriented Architecture enabling dynamic service grouping for optimizing distributed workflow execution

2008 ◽  
Vol 24 (7) ◽  
pp. 720-730 ◽  
Author(s):  
Tristan Glatard ◽  
Johan Montagnat ◽  
David Emsellem ◽  
Diane Lingrand
Keyword(s):  
Service Oriented Architecture ◽  
Distributed Workflow ◽  
Workflow Execution ◽  
Service Oriented

A contract-based workflow execution framework for realizing artifact-centric business processes in a dynamic and collaborative environment

2020 ◽  
Vol 16 (4) ◽  
pp. 427-449
Author(s):  
Kan Ngamakeur ◽  
Sira Yongchareon
Keyword(s):  
Business Processes ◽  
Service Oriented Architecture ◽  
Workflow Management ◽  
Content Type ◽  
Workflow Systems ◽  
Workflow Execution ◽  
Collaborative Environment ◽  
Service Oriented ◽  
Business Entities ◽  
Model Conversion

Purpose The paper aims to study realization requirements for the flexible enactment of artifact-centric business processes in a dynamic, collaborative environment and to develop a workflow execution framework that can effectively address those requirements. Design/methodology/approach This study proposed a framework and contract-based, event-driven architecture design and implementation that can directly realize collaborative artifact-centric business processes in service-oriented architecture (SOA) without any model conversion. Findings The results show that the approach is feasible in presenting several key benefits over the use of existing workflow systems to run artifact-centric processes. Originality/value Most of the existing approaches require an artifact-centric model to be transformed into executable workflow languages to run on existing workflow management systems. This study argues that the model conversion can incur losses of information and affect traceability and monitoring ability of workflows, especially in an SOA where a workflow can span across multiple inter-business entities.

DYNAMIC REST SERVICES ORCHESTRATION USING THE KNOWLEDGE BASE

2019 ◽  
Author(s):  
Kostyantyn Kharchenko
Keyword(s):  
Knowledge Base ◽  
Service Oriented Architecture ◽  
Main Idea ◽  
The Real ◽  
Server Side ◽  
Service Oriented ◽  
Services Orchestration ◽  
Client Side ◽  
Abstract Operation ◽  
Microservice Architecture

The approach to organizing the automated calculations’ execution process using the web services (in particular, REST-services) is reviewed. The given solution will simplify the procedure of introduction of the new functionality in applied systems built according to the service-oriented architecture and microservice architecture principles. The main idea of the proposed solution is in maximum division of the server-side logic development and the client-side logic, when clients are used to set the abstract computation goals without any dependencies to existing applied services. It is proposed to rely on the centralized scheme to organize the computations (named as orchestration) and to put to the knowledge base the set of rules used to build (in multiple steps) the concrete computational scenario from the abstract goal. It is proposed to include the computing task’s execution subsystem to the software architecture of the applied system. This subsystem is composed of the service which is processing the incoming requests for execution, the service registry and the orchestration service. The clients send requests to the execution subsystem without any references to the real-world services to be called. The service registry searches the knowledge base for the corresponding input request template, then the abstract operation description search for the request template is performed. Each abstract operation may already have its implementation in the form of workflow composed of invocations of the real applied services’ operations. In case of absence of the corresponding workflow in the database, this workflow implementation could be synthesized dynamically according to the input and output data and the functionality description of the abstract operation and registered applied services. The workflows are executed by the orchestrator service. Thus, adding some new functions to the client side can be possible without any changes at the server side. And vice versa, adding new services can impact the execution of the calculations without updating the clients.

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