分散系統管理機制應用於企業Web Services環境之研究

Abstract

Web services透過標準界面的制定，提供了企業系統整合的良好解決方案。Enterprise Web Services Environment(EWSE)利用了這個優點，整合了企業的應用程式以及商業流程。雖然EWSE對整合帶來了相當多的好處，然後要為其加入管理機制並不容易。Web Services Distributed Management (WSDM) 是最常用來管理Web services的標準之一。然而，實作WSDM介面相當複雜，因為程式設計師需要了解許多相關的Web services標準以及開發WSDM相關的程式碼。此外，WSDM只能管理單一服務，無法掌控服務間的互動以及訊息的流程。因此，EWSW通常需要額外的軟體來處理這方面的問題。 在這個研究中，我們將簡化WSDM介面實作的難度並提供EWSW的訊息導向管理機制。藉由必須開發的管理功能程式，自動產生WSDM的Web services介面。開發者可以專注於管理程式，毋須深入了解Web services標準。另一方面，在不更動現有程式邏輯的情形下，便可以為現有的Web services自動提供訊息流程導向的管理，讓系統管理者掌握系統服務的狀態，做為企業檢視服務的使用狀況。最後，我們將展示一個參考架構，做為企業建立管理系統的參考。提供企業在不耗費太多成本的狀況下建立一個有效率且具延展示的EWSE管理系統。

Web services define standard interfaces those provide good solutions for enterprise integration. Enterprise Web Services Environment (EWSE) uses the advantage to integrate enterprise applications and business processes. Although EWSE is excellence in integration, it is not easy to add management mechanism. Web Services Distributed Management (WSDM) is one of the most used standards to manage Web services. However, to implement the WSDM interfaces is complexity because programmers have to understand many Web service standards and develop program code for WSDM. Besides, WSDM can only manage single service. It does not cover service interaction and message flows of Web services. EWSE needs additional software to handle those processes. In this research, we will simply the WSDM programs development effort and provide message flow oriented management in EWSE. The Web service interfaces are generated based on program code that implement management function and must be created. Programmers only focus on management functions and do not have to understand those Web services standards. On the other hand, the management system provides message flow oriented management atomically without modifying service code. Managers can know and control all flows as well as adjust business processes at any time. Finally, we present reference architecture for enterprise to build management system. Therefore, enterprise will not spend too much effort to build an efficient and extensible management system in EWSE.