scholarly journals The WSDM of Autonomic Computing: Experiences in Implementing Autonomic Web Services

2007 ◽  
Author(s):  
P. Martin ◽  
W. Powley ◽  
K. Wilson ◽  
W. Tian ◽  
T. Xu ◽  
...  
Keyword(s):  
Web Services ◽  
Autonomic Computing

Exception Handling of Composite Services Based on Autonomic Management

2013 ◽  
Vol 336-338 ◽  
pp. 2537-2543
Author(s):  
Ji Tao Cui ◽  
Jian Hua Han
Keyword(s):  
Web Services ◽  
Business Process ◽  
Autonomic Computing ◽  
Business Processes ◽  
Exception Handling ◽  
Autonomic Management ◽  
Composite Services ◽  
Composite Web Services ◽  
Management Theories

BPEL-based composition of Web services has become one important part of business processes, but because of the dynamic and complexity of network, it easily raises various exceptions during the execution. In order to address various exceptions may exist in execution of composite Web services process effectively; this paper proposes an effective exception handling model of composite Web services in combination of the autonomic management theories and techniques in the field of autonomic computing. This model incorporates the autonomic management element of autonomic computing to monitor the execution of composite services and to compensate or restore the business process of the composite services according to the specified policy when an exception occurs. The model enhances the exception handling autonomy while reducing the complexity of exception handling of composite services.

scholarly journals An Adaptable Context Management Framework for Pervasive Computing

2010 ◽  
pp. 276-308 ◽  
Author(s):  
Jared Zebedee ◽  
Patrick Martin ◽  
Kirk Wilson ◽  
Wendy Powley
Keyword(s):  
Web Services ◽  
Pervasive Computing ◽  
Context Awareness ◽  
Management System ◽  
Autonomic Computing ◽  
Context Management ◽  
Management Framework ◽  
Intermittent Connectivity ◽  
Computing Paradigm ◽  
Pervasive Environment

Pervasive computing presents an exciting realm where intelligent devices interact within the background of our environments to create a more intuitive experience for their human users. Context-awareness is a key requirement in a pervasive environment because it enables an application to adapt to the current situation. Context-awareness is best facilitated by a context management system that supports the automatic discovery, retrieval and exchange of context information by devices. Such a system must perform its functions in a pervasive computing environment that involves heterogeneous mobile devices which may experience intermittent connectivity and resource and power constraints. The objective of the chapter is to describe a robust and adaptable context management system. We achieve an adaptable context management system by adopting the autonomic computing paradigm, which supports systems that are aware of their surroundings and that can automatically react to changes in them. A robust context management system is achieved with an implementation based on widely accepted standards, specifically Web services and the Web Services Distributed Management (WSDM) standard.

scholarly journals An Adaptable Context Management Framework for Pervasive Computing

2011 ◽  
pp. 114-146
Author(s):  
Jared Zebedee ◽  
Patrick Martin ◽  
Kirk Wilson ◽  
Wendy Powley
Keyword(s):  
Web Services ◽  
Pervasive Computing ◽  
Context Awareness ◽  
Management System ◽  
Autonomic Computing ◽  
Context Management ◽  
Management Framework ◽  
Intermittent Connectivity ◽  
Computing Paradigm ◽  
Pervasive Environment

Pervasive computing presents an exciting realm where intelligent devices interact within the background of our environments to create a more intuitive experience for their human users. Context-awareness is a key requirement in a pervasive environment because it enables an application to adapt to the current situation. Context-awareness is best facilitated by a context management system that supports the automatic discovery, retrieval and exchange of context information by devices. Such a system must perform its functions in a pervasive computing environment that involves heterogeneous mobile devices which may experience intermittent connectivity and resource and power constraints. The objective of the chapter is to describe a robust and adaptable context management system. We achieve an adaptable context management system by adopting the autonomic computing paradigm, which supports systems that are aware of their surroundings and that can automatically react to changes in them. A robust context management system is achieved with an implementation based on widely accepted standards, specifically Web services and the Web Services Distributed Management (WSDM) standard.

scholarly journals Autonomic Web Services Based on Different Adaptive Quasi-Asynchronous Checkpointing Techniques

2020 ◽  
Vol 10 (7) ◽  
pp. 2495
Author(s):  
Mariano Vargas-Santiago ◽  
Luis Morales-Rosales ◽  
Raul Monroy ◽  
Saul Pomares-Hernandez ◽  
Khalil Drira
Keyword(s):  
Web Services ◽  
Autonomic Computing ◽  
Service Providers ◽  
Self Healing ◽  
Efficient Manner ◽  
Internet Infrastructure ◽  
Control Information ◽  
Computing Paradigm ◽  
Self Protection

Companies, organizations and individuals use Web services to build complex business functionalities. Web services must operate properly in the unreliable Internet infrastructure even in the presence of failures. To increase system dependability, organizations, including service providers, adapt their systems to the autonomic computing paradigm. Strategies can vary from having one to all (S-CHOP, self-configuration, self-healing, self-optimization and self-protection) features. Regarding self-healing, an almost identical tool is communication-induced checkpointing (CiC), a checkpoint contains the state (heap, registers, stack, kernel state) for each process in the system. CiC is based on quasi-synchronous checkpointing where processes take checkpoints relying of control information piggybacked inside application messages; however, avoiding dangerous patterns such as Z-paths and Z-cycles; in such a regard the system takes forced checkpoints and avoids inconsistent states. CiC, unlike other tools, does not incur system performance, our proposal does not incur high overhead (as results show), and it has the advantage of being scalable. As we have shown in a previous work, CiC can be used to address dependability problems when dealing with Web services, as CiC mechanism work in a distributed and efficient manner. Therefore, in this work we propose an adaptable and dynamic generation of checkpoints to support fault tolerance. We present an alternative considering Quality of Service (QoS) criteria, and the different impact applications have on it. We propose taking checkpoints dynamically in case of failure or QoS degradation. Experimental results show that our approach has significantly reduced the generation of checkpoints of various well-known tools in the literature.

WS-Security on PRODML

2014 ◽  
Vol 1 (1) ◽  
pp. 9-34
Author(s):  
Bobby Suryajaya
Keyword(s):  
Web Services ◽  
Digital Signature ◽  
Data Transfer ◽  
Web Services Security ◽  
Soap Message ◽  
Simulation Results ◽  
End To End

SKK Migas plans to apply end-to-end security based on Web Services Security (WS-Security) for Sistem Operasi Terpadu (SOT). However, there are no prototype or simulation results that can support the plan that has already been communicated to many parties. This paper proposes an experiment that performs PRODML data transfer using WS-Security by altering the WSDL to include encryption and digital signature. The experiment utilizes SoapUI, and successfully loaded PRODML WSDL that had been altered with WSP-Policy based on X.509 to transfer a SOAP message.

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