Architecture centric development in software product. In the presented architecturecentric software evolution method the quality of a software system is assured in the software design phase by computing various kinds of design metrics from the system. The existing solutions for architectural maintenance and evolution fall short of exploiting generic and reusable expertise to. We propose to enable transformationdriven evolution for service architectures in a semiautomated fashion. Component based software engineering cbse is the major technical response to the increase in. This brandnew text covers all facets of software architecture and how it serves as the intellectual centerpiece of software development and evolution. Based on this discussion, architecturecentric software migration will be described in greater detail and supplemented by the introduction and evaluation of two strategies for the practical implementation of the migration process. Architecturecentric software evolution by software metrics and design patterns conference paper in proceedings of the euromicro conference on software maintenance and reengineering, csmr. The advantage of a gating approach via architecturedesign is the potential savings in downstream maintenance costs due to conformant code. Architecturecentric software development claudio riva principal scientist.
A pattern language for evolution in componentbased. The architecturecentric software evolution model is depicted in figure 1. The approach leads to reduced maintenance effort and simplified. Runtime software architecture rsa can help maintainers to understand, control, adapt and evolve the system, while keep the. A decision was made to replace the system with a new one. Architecture centric development method scs technical report.
Most work on software evolution focuses on practices towards managing code. Although architecturecentric maintenance and evolution is useful for adjusting software structure and behaviour at higher abstractions, this approach lacks the potential for systematic change reuse. The existing research and practices for acse primarily focus on designtime evolution and runtime adaptations to accommodate changing. We investigate architecture change representation, primarily focusing on the identification of change patterns that support the potential reuse of common changes in architecturecentric evolution for service software. Graphbased pattern identification from architecture. Componentbased software engineering cbse is the major technical response to the increase in. When engineering complex and distributed software and hardware systems. How is software architecture different from ea, dodaf, c4isr, or system architecture. The goal of the seminar software architecture is to train the participants in the typical activities performed by an architect. Patevol a pattern language for evolution in componentbased software architectures aakash ahmad, pooyan jamshid, claus pahl, fawad khaliq lero the irish software engineering research centre school of computing, dublin city university, ireland.
The paper concludes with a summary and an outlook on future work. In the presented architecturecentric software evolution method the quality of a software system is assured in the software design phase by computing various kinds of design metrics from the system architecture, by automatically exploring instances of design patterns and antipatterns from the architecture, and by reporting potential quality problems to the designers. The process of software evolution is driven by requests for changes and includes change impact analysis, release planning and change implementation. Architecturecentric software evolution by software. In this paper we propose an architecturecentric analysis process which allows formal. Figure 1 utility principle with multistyle apicentric architecture. Maintenance of the software also became more difficult. This is the underlying philosophy of the architecture centric development method.
Serviceoriented architecture soa is a style of software design where services are provided to the other components by application components, through a communication protocol over a network. Planning, analysis and design consume the bulk of the software development life cycle time. Electrical and computer engineering, purdue university calumet, hammond, in 46323, u. Written for project managers and software architects, architecturecentric software project management demonstrates how to draw on software architecture to design schedules, generate estimates, make scope decisions, and manage the development team for a successful outcome. Patterndriven reuse in architecturecentric evolution for. With difhub, this time can be reduced by more than 50%, since most implementation and deployment errors are eliminated. Servercentric storage is when all storage required by a server is stored or directly attached to the server itself. Architecturecentric software evolution enables change in a systems structure and behaviour while maintaining a global view of the software to address evolutioncentric tradeoffs. These five categories of themes represent an overview of the main topics of software architecture evolution research. The application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of. A practical architecturecentric analysis process springerlink.
An architecturecentric software maintainability assessment 3 an international standard for the evaluation of software. Classification and comparison of architecture evolution. It is shown how software metrics and architectural patterns can be used for the management of software evolution. In section 1 we discuss background and justify our study. A soa service is a discrete unit of functionality that can be accessed remotely and acted upon and updated independently, such as retrieving a credit card statement online. Patevol a pattern language for evolution in component. The arque project has developed an integrated and comprehensive method that enables goaloriented,architecturecentric development and strategic quality engineering. The patevol project focuses on managing a constructive architecture. Conversely, planning for architecture evolution is a powerful tool to guide and plan for software evolution. The lehmans law of continuing change demands for longliving and continuously evolving architectures to prolong the productive life and economic value of deployed software. From legacy systems, service oriented architecture to cloud computing. Taylor appeared in the proceedings of the international conference on software engineering 1998 icse98.
Architecturecentric software evolution enables change in system structure and behavior while maintaining a global view of software to address evolutioncentric tradeoffs. Mining patterns from change logs to support reusedriven. Agenda the role of sw architecture in the development process what is a software development process and how it is described traditional vs iterative process models characteristics and benefits of architecturecentric sw development agile processes and architecture. Difhub tools set enables organic software applications maintenance and evolution where time savings are extremely high. Within the patevol project ahmad and pahl, 2012a we aim at supporting patterndriven reuse in architecturecentric evolution for service. Servicebased architectures have become commonplace, creating the need to address their systematic maintenance and evolution. Critically, this text focuses on supporting creation of real implemented systems. Each structure comprises software elements, relations among them, and properties of both elements and relations. Many organizations are interested in exploring ea methods as a way to improve alignment between business strategy and the delivery of technology solutions to enable the. Software engineering processes and methods for architecturecentric evolution theoretical aspects of architecturecentric evolution, e. We propose architecture change mining as a complementary phase to a. This is the underlying philosophy of the architecture centric development method acdm. Coordinates team creation and maintenance of architecture documentation.
Citeseerx document details isaac councill, lee giles, pradeep teregowda. We are looking at approaches to help bridge this gap of architecture centric software evolution. Ieee definition an engineering discipline that is concerned with all aspects of software. The patevol project focuses on managing a constructive architecturebased evolution process for service software. Therefore, we aim at improving the existing efforts like 4, 2 etc. Architecture as a phase treating architecture as a phase denies its foundational role in software development more than highlevel design architecture is also represented, e. The proposed metric is based on a mathematical model representing the maintainability snapshot of a system. Lehmans laws, such as the notion that change is continuous, describe a number of insights derived from longterm studies of system evolution. The seminar is a threeday onsite training session, which can be extended by an additional two days to consolidate the skills learned. It has been over twenty years since the introduction of the first software process. Enterprise architecture ea is a proven, repeatable means to improve the coordination and alignment of it and business investments to efficiently deliver strategic initiatives. Classification and comparison of architecture evolution reuse.
We investigate architecture change logs mining histories of architecturecentric software evolution to discover change patterns that 1 support reusability of architectural changes and 2 enhance the efficiency of the architecture evolution process. Software architecture refers to the fundamental structures of a software system and the discipline of creating such structures and systems. Software industry is also evolving with the day to day. Ieee international conference on software maintenance icsm. Servicebased architectures have now become commonplace, creating the need to address their systematic maintenance and evolution. The architecture of a software system is a metaphor, analogous to the architecture of a building.
Although architecturecentric maintenance and evolution proved successful in adjusting software structure and behavior at higher abstractions, a systematic investigation breivold et al. The protocol description is organized in 3 sections as follows. A framework for architecturedriven migration of legacy. In contrast to the existing solutions like service wrapping, migration or runtime adaptation etc. Architecturecentricsoftware evolution by software metrics. In the presented architecturecentric software evolution method the quality of a. Each theme stands for a research direction on its own, with only a subset of its research and application dedicated to the area of software architecture evolution.
As explained, each theme exhibits its specific research focus. The architecture of a software system plays a crucial role during evolution and maintenance, as it provides the means to cope with the inherent system complexity by abstracting from implementation and design details. A software architecture is a shared mental model of. Context architecturecentric software evolution acse enables changes in systems structure and behaviour while maintaining a global view of the software to. A key aspect of software evolution is architecture evolution. The second type of storage we will talk about is informationcentric storage. Architecturecentric software evolution by software metrics and. Pdf architecturecentric development and evolution processes for. Customisable transformationdriven evolution for service. Therefore, we propose a pattern language patevol as a collection of interconnected change patterns that enable reusedriven and consistent evolution in componentbased software architectures cbsas. The consolidated expertise from applying the arque approach at different industry partners shows the applicability and scalability in the embedded systems domain. Architecturecentricsoftware evolution by software metrics and design patterns juha gustafsson, jukka paakki, lilli nenonen, and a. Architecturecentric development and evolution processes for.
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