Aspect Separation in Web Service Orchestration: A Reflective Approach and its Application to Decentralized Execution

2007 ◽  
Author(s):  
R. Jimenez-Peris ◽  
M. Patino-Martinez ◽  
E. Martel-Jordan ◽  
R. Naranjo-Izquierdo
Keyword(s):  
Web Service ◽  
Service Orchestration ◽  
Web Service Orchestration ◽  
Reflective Approach ◽  
Decentralized Execution

A Model-based Approach for Diagnosing Fault in Web Service Processes

2013 ◽  
pp. 92-116
Author(s):  
Yuhong Yan ◽  
Philippe Dague ◽  
Yannick Pencolé ◽  
Marie-Odile Cordier
Keyword(s):  
Web Services ◽  
Web Service ◽  
Business Process ◽  
Business Processes ◽  
Formal Model ◽  
Service Orchestration ◽  
Model Based ◽  
Architecture Framework ◽  
Web Service Orchestration ◽  
Business Process Execution

Web services based on a service-oriented architecture framework provide a suitable technical foundation for business process management and integration. A business process can be composed of a set of Web services that belong to different companies and interact with each other by sending messages. Web service orchestration languages are defined by standard organizations to describe business processes composed of Web services. A business process can fail for many reasons, such as faulty Web services or mismatching messages. It is important to find out which Web services are responsible for a failed business process because we could penalize these Web services and exclude them from the business process in the future. In this paper, we propose a model-based approach to diagnose the faults in a Web service-composed business process. We convert a Web service orchestration language, more specifically BPEL4WS, into synchronized automata, so that we have a formal description of the topology and variable dependency of the business process. After an exception is thrown, the diagnoser can calculate the business process execution trajectory based on the formal model and the observed evolution of the business process. The faulty Web services are deduced from the variable dependency on the execution trajectory. We demonstrate our diagnosis technique with an example.

A Model-Based Approach for Diagnosing Fault in Web Service Processes

2011 ◽  
pp. 1970-1993 ◽  
Author(s):  
Yuhong Yan ◽  
Philippe Dague ◽  
Yannick Pencolé ◽  
Marie-Odile Cordier
Keyword(s):  
Web Services ◽  
Web Service ◽  
Business Process ◽  
Business Processes ◽  
Formal Model ◽  
Formal Description ◽  
Service Orchestration ◽  
Model Based ◽  
Web Service Orchestration ◽  
Business Process Execution

Web service orchestration languages are defined to describe business processes composed of Web services. A business process can fail for many reasons, such as faulty Web services or mismatching messages. It is important to find out which Web services are responsible for a failed business process because we could penalize these Web services and exclude them from the business process in the future. In this paper, we propose a model-based approach to diagnose the faults in a Web service-composed business process. We convert a Web service orchestration language, BPEL4WS, into synchronized automata, so that we have a formal description of the topology and variable dependency of the business process. After an exception is thrown, the diagnoser can calculate the business process execution trajectory based on the formal model and the observed evolution of the business process. The faulty Web services are deduced from the variable dependency on the execution trajectory.

Web Service Orchestration and Choreography

2011 ◽  
pp. 250-273 ◽  
Author(s):  
Florian Daniel
Keyword(s):  
Web Services ◽  
Web Service ◽  
Point Of View ◽  
Service Development ◽  
Service Orchestration ◽  
Development Framework ◽  
Web Service Orchestration ◽  
Problems And Solutions ◽  
Enterprise Collaboration ◽  
The Web

The Web service domain is a fast growing and fast changing environment. From a business perspective, the trend over the last few years in the Web services area firmly points toward seamless business logic integration and inter-enterprise collaboration. However, in order to accomplish such goals, both technological and conceptual advances are required. Some already have proven their viability, others still have to be made. Among them, Web service orchestration and choreography are of crucial importance, but still lack a widely agreed on development framework comprising both technological and conceptual aspects. In this paper we try to provide a critical snapshot of current standards for Web service development and particularly we focus on Web service orchestration and choreography. We discuss problems and solutions from a conceptual point of view, exemplify the illustrated ideas by means of real-world technologies and standards and highlight the mutual dependencies that exist among orchestration and choreography of Web services.

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