Issues on the Compatibility of Web Service Contracts

2013 ◽  
pp. 154-188 ◽  
Author(s):  
Surya Nepal ◽  
John Zic
Keyword(s):  
Web Service ◽  
Service Composition ◽  
Large Scale ◽  
Service Oriented Architecture ◽  
Distributed Applications ◽  
Compatibility Conditions ◽  
Service Contract ◽  
Service Contracts ◽  
Service Oriented ◽  
Application Developers

In the Service Oriented Architecture (SOA) model, a service is characterized by its exchange of asynchronous messages, and a service contract is a desirable composition of a variety of messages. Though this model is simple, implementing large-scale, cross-organizational distributed applications may be difficult to achieve in general, as there is no guarantee that service composition will be possible because of incompatibilities of Web service contracts. We categorize compatibility issues in Web service contracts into two broad categories: (a) between contracts of different services (which we define as a composability problem), and (b) a service contract and its implementation (which we define as a conformance problem). This chapter examines and addresses these problems, first by identifying and specifying contract compatibility conditions, and second, through the use of compatibility checking tools that enable application developers to perform checks at design time.

A Novel Physics Inspired Approach for Web Service Composition

2014 ◽  
Vol 11 (2) ◽  
pp. 67-84 ◽  
Author(s):  
Tanveer Ahmed ◽  
Abhishek Srivastava
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Service Oriented Architecture ◽  
Service Providers ◽  
Web Service Composition ◽  
Heterogeneous Services ◽  
Service Oriented ◽  
Service Consumer ◽  
Selection Of

Service oriented architecture has revolutionized the way a traditional business process is executed. The success of this architecture is Indue to the composition of multiple heterogeneous services at runtime. Web service composition is a mechanism where several web services are combined at runtime to build a complex application for a user. It is one of the most sought after processes in the context of semantic web. But, composition of web services at runtime is a difficult task owing to the availability of multiple service providers offering the same functionality. The process if exasperated by due conflicting preferences of a service consumer. In this paper, the authors address the issue of selecting a service based on Quality of Service (QoS) attributes. They utilize concepts customized from physics to create an environment that facilitates the selection of a best service from the set of similar services. The technique not only facilitates the selection of the service with the best QoS attributes, but distributes the load among expeditiously. Here in this paper, the authors concentrate on minimizing and equitably balancing the waiting time for a user. They conduct in silico experiments on multiple workflows to demonstrate the efficacy of the proposed technique to balance load efficiently among similar service offerings.

Autonomic Execution of Web Service Composition Using AI Planning Method

2015 ◽  
Vol 8 (1) ◽  
pp. 28-45 ◽  
Author(s):  
Chao-Qun Yuan ◽  
Fang-Fang Chua
Keyword(s):  
Web Service ◽  
Service Composition ◽  
Service Oriented Architecture ◽  
Web Service Composition ◽  
Automated System ◽  
Ai Planning ◽  
Dynamic Factors ◽  
Service Oriented ◽  
Business Requirements ◽  
Oriented System

Web Service Composition is one of the technologies in Service Oriented Architecture which significantly increases the flexibility and reusability of developing service-oriented system. One of the major problems which occurs in web service composition is the difficulties of maintaining the existing running web service composition solutions due to the changes of business requirements, deployment environment, and other dynamic factors. In this proposed work, an automated system had been built to autonomously execute the web service composition. To achieve this objective, the authors had embedded semantic engine and Prolog in C# program to automatically and dynamically discover, compose and execute web service composition, i.e. a web service composition could be self-configured to automatically recover from execution failure and automatically re-generate composition solution due to business protocol changes.

Autonomic Execution of Web Service Composition Using AI Planning Method

Web Services ◽  
2019 ◽  
pp. 1530-1550
Author(s):  
Chao-Qun Yuan ◽  
Fang-Fang Chua
Keyword(s):  
Web Service ◽  
Service Composition ◽  
Service Oriented Architecture ◽  
Web Service Composition ◽  
Automated System ◽  
Ai Planning ◽  
Dynamic Factors ◽  
Service Oriented ◽  
Business Requirements ◽  
The Web

Web Service Composition is one of the technologies in Service Oriented Architecture which significantly increases the flexibility and reusability of developing service-oriented system. One of the major problems which occurs in web service composition is the difficulties of maintaining the existing running web service composition solutions due to the changes of business requirements, deployment environment, and other dynamic factors. In this proposed work, an automated system had been built to autonomously execute the web service composition. To achieve this objective, the authors had embedded semantic engine and Prolog in C# program to automatically and dynamically discover, compose and execute web service composition, i.e. a web service composition could be self-configured to automatically recover from execution failure and automatically re-generate composition solution due to business protocol changes.

Abstract Service for Cyber Physical Service Composition

2013 ◽  
pp. 303-322 ◽  
Author(s):  
Yajing Zhao ◽  
Jing Dong ◽  
Jian Huang ◽  
Yansheng Zhang ◽  
I-Ling Yen ◽  
...  
Keyword(s):  
Semantic Web ◽  
Web Service ◽  
Service Composition ◽  
Service Discovery ◽  
Service Oriented Architecture ◽  
Cyber Physical Systems ◽  
Software Systems ◽  
Physical Systems ◽  
Service Oriented

The collaboration of cyber physical systems poses many real-world challenges, such as knowledge restriction, resource contention, and communication limitation. Service oriented architecture has been proven effective in solving interoperability issues in the software engineering field. The semantic web service helps to automate service discovery and integration with semantic information. This chapter models cyber physical system functionalities as services to solve the collaboration problem using semantic web services. We extend the existing OWL-S framework to address the natures of the cyber physical systems and their functionalities, which are different from software systems and their functionalities. We also present a case study to illustrate our approach.

User Preference-Based Web Service Composition and Execution Framework

2015 ◽  
pp. 118-138 ◽  
Author(s):  
Bassam Al-Shargabi ◽  
Omar Sabri
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Service Oriented Architecture ◽  
Wide Spectrum ◽  
Web Service Composition ◽  
User Preferences ◽  
User Preference ◽  
Service Oriented ◽  
Composition Process

the motivation behind this chapter is that Service Oriented architecture issued to compose an application as a set of services that are language and platform independent, communicate with each other, Therefore, user preferences rules in web service composition process plays crucial role and has opened a wide spectrum of challenge, In this chapter, an agent for composing web services based on user preferences was introduced to fulfill a certain process, where the user preferences are essential for determining which web service are to be selected. In other word, the agent designed to maintain the following function: an intelligent web services selection and planning based on user preferences(such as price or availability), along with web services execution, tracking and adaptation.

scholarly journals Blockchain-based cloud manufacturing platforms: A novel idea for service composition in XaaS paradigm

2021 ◽  
Vol 7 ◽  
pp. e743
Author(s):  
Seyyed-Alireza Radmanesh ◽  
Alireza Haji ◽  
Omid Fatahi Valilai
Keyword(s):  
Service Composition ◽  
Manufacturing Systems ◽  
Large Scale ◽  
Manufacturing System ◽  
Service Oriented Architecture ◽  
Time Synchronization ◽  
Main Idea ◽  
Cloud Manufacturing ◽  
Blockchain Technology ◽  
Service Oriented

Cloud manufacturing is a new globalized manufacturing framework which has improved the performance of manufacturing systems. The service-oriented architecture as the main idea behind this framework means that all resources and capabilities are considered as services. The agents interact by way of service exchanging, which has been a part of service composition research topics. Service allocations to demanders in a cloud manufacturing system have a dynamic behavior. However, the current research studies on cloud-based service composition are mainly based on centralized global optimization models. Therefore, a distributed deployment and real-time synchronization platform, which enables the globalized collaboration in service composition, is required. This paper proposes a method of using blockchain to solve these issues. Each service composition is considered as a transaction in the blockchain concept. A block includes a set of service compositions and its validity is confirmed by a predefined consensus mechanism. In the suggested platform, the mining role in blockchain is interpreted as an endeavor for proposing the proper service composition in the manufacturing paradigm. The proposed platform has interesting capabilities as it can increase the response time using the blockchain technology and improve the overall optimality of supply-demand matching in cloud manufacturing. The efficiency of the proposed model was evaluated by investigating a service allocation problem in a cloud manufacturing system in four large scale problems. Each problem is examined in four centralized modes, two, three and four solvers in blockchain-based model. The simulation results indicate the high quality of the proposed solution. The proposed solution will lead to at least 15.14% and a maximum of 34.8 percent reduction in costs and 20 to 68.4 percent at the solving time of the problem. It is also observed that with increasing the number of solvers (especially in problems with larger dimensions) the solution speed increases sharply (more than 68% improvement in some problems), which indicates the positive effect of distribution on reducing the problem-solving time.

Abstract Service for Cyber Physical Service Composition

2014 ◽  
pp. 2056-2076
Author(s):  
Yajing Zhao ◽  
Jing Dong ◽  
Jian Huang ◽  
Yansheng Zhang ◽  
I-Ling Yen ◽  
...  
Keyword(s):  
Semantic Web ◽  
Web Service ◽  
Service Composition ◽  
Service Discovery ◽  
Service Oriented Architecture ◽  
Cyber Physical Systems ◽  
Software Systems ◽  
Physical Systems ◽  
Service Oriented

The collaboration of cyber physical systems poses many real-world challenges, such as knowledge restriction, resource contention, and communication limitation. Service oriented architecture has been proven effective in solving interoperability issues in the software engineering field. The semantic web service helps to automate service discovery and integration with semantic information. This chapter models cyber physical system functionalities as services to solve the collaboration problem using semantic web services. We extend the existing OWL-S framework to address the natures of the cyber physical systems and their functionalities, which are different from software systems and their functionalities. We also present a case study to illustrate our approach.

Web Service Composition Security

2021 ◽  
Vol 12 (3) ◽  
pp. 154-174
Author(s):  
Mohsen Rouached
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Service Oriented Architecture ◽  
Web Service Composition ◽  
Security And Privacy ◽  
Comprehensive Overview ◽  
Security Models ◽  
Service Oriented ◽  
Enterprise Security

The continuous adoption of service-oriented architecture (SOA) and web services across vertical industries, geographies, and organization sizes generates new major security concerns both for individuals and organizations. Many of the features that make web services attractive, including greater accessibility of data, dynamic application-to-application connections, and relative autonomy are at odds with traditional security models and controls. Current web service composition technologies still present serious risks to individual and enterprise security and privacy. In the presence of multiple providers that coordinate to provide a composite web service, these issues are amplified. Web services security, privacy, and forensics investigations are therefore becoming a serious concern, especially with the tremendous increase in cybernetic crimes. The aim of this work is to draw a comprehensive overview about security aspects related to web services composition by considering different branches related to security, privacy, and forensics investigations. For each security aspect, the problem statement and related works are discussed. Then, a proposed approach to deal with the aspect under consideration is presented.

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