Study on Risk-Driven Web Service Composition Management Mechanism

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Project title

Code/計畫編號

NSC102-2221-E019-024

Translated Name/計畫中文名

風險驅動之複合服務管理機制研究

Project Coordinator/計畫主持人

Shang-Pin Ma

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Computer Science and Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=3086583

Year

2013

Start date/計畫起

01-08-2013

Expected Completion/計畫迄

31-07-2014

Bugetid/研究經費

554千元

ResearchField/研究領域

資訊科學--軟體
管理科學

"服務導向架構(Service-Oriented Architecture, SOA)已成為目前軟體整合技術之主流，用以開發低偶合的應用程式，以及整合已存在或新建置的軟體系統，而如何有效率地監控、管理及調適網際服務以確保服務導向系統之品質，成為目前被重視的重要議題。本研究認為僅在服務運行發生故障時，才被動地去解決問題是不夠的，相反的，主動地偵測潛在或可能的故障亦相當重要。因此，本研究計畫提出一個風險驅動的服務組合管理機制，此機制主要分成四個階段：準備(preparation)、規劃(planning)、監控&反應(monitoring & reaction)，以及分析 (analysis)階段，透過本研究方法，高風險的服務可較早被剔除，也可在發生故障時，快速地追蹤處理故障及受影響的服務，且進一步提升 SOA系統的強健度。本計畫規劃應產出的主要核心技術包含：  計算服務風險值之方法：用以推測服務組合中容易發生故障的元件服務。  建立服務相依圖(service dependency graph, SDG)及故障追蹤路徑(fault tracking path, FTP)之方法：用以有效地追蹤及復原故障的複合服務。  風險驅動服務組合管理引擎：將上述方法實際整合於服務流程引擎中，以提供一個可執行、監控、管理複合服務之平台，並能在服務發生失敗時有效地解決故障問題。""How to effectively and efficiently monitor, manage, and adapt web services is becoming a significant issue to address in the SOC domain. In this project, we argue that only solving emerging service faults at deployment time or runtime is not enough; on the contrary, we believe that prediction of service faults is equivalently important. Thus, we propose a risk-driven service composition management including four main phases: preparation, planning, monitoring and reaction, and analysis. By applying the proposed approach, risky component services can be removed earlier, and the fault source can be tracked and identified more easily when any failure occurs. We believe the proposed risk-driven approach can effectively and efficiently ensure the robustness of an SOA-based system. Expected results for this project include:  A method to calculate the service risk exposure for estimating the possible faults which reside in a service composition.  A method to construct the service dependency graph (SDG) and the fault tracking path (FTP) to efficiently track service faults and recover the faulty composite service.  A risk-driven service composition management engine to execute, monitor and manage composite services and to effectively solve faults when any service failure occurs."

Keyword(s)

服務管理
風險管理
服務組合
Service Management
Risk Management
Service Composition

DSpace CRIS

Study on Risk-Driven Web Service Composition Management Mechanism

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