Remote Storage Resource Management in WS-PGRADE/gUSE - Science Gateways for Distributed Computing Infrastructures - page 68

can access various storage resources simply using the HTTP protocol, which
available in all infrastructures.
The chapter is organized as follows. Section 5.2 presents the Data Avenue
concept and its main components. Section 5.3 describes how Data Avenue is used
in WS-PGRADE/gUSE. Section 5.4 discusses security concerns. Finally, Sect. 5.5
concludes the chapter.

5.2 Data Avenue

Data Avenue was designed to separate the core functionalities from the graphical
user interface. Storage resources are directly managed by a component called Data
Avenue Web Services, referred to as the

for short, whose services are
used by the Data Avenue User Interface component, called the

“ Blacktop ”

for short. The
Blacktop is a web application providing a web service interface (SOAP/REST) to
which clients

“ UI ”

can connect. The UI has been implemented as a
portlet deployable in any portlet container, and it provides a web-based, graphical
interface for the users. Therefore the designed architecture, depicted in Fig. 5.1 ,
offers a number of use-cases to exploit the Data Avenue services.

— including the UI —

Fig. 5.1 Data Avenue overall architecture and use-cases