Software Architecture of the Spitzer Archive Interface
2007
The Spitzer Science Center (SSC) provides a set of user tools to
support search and retrieval of Spitzer Archive (SA) data via the Internet. This
presentation describes the software architecture and design principles that support
the Archive Interface subsystem of the SA (Handley 2007). The Archive
Interface is an extension of the core components of the Uplink subsystem and
provides a set web services to allow open access to the SA data set. Web services
technology provides a basis for searching the archive and retrieving data
products. The archive interface provides three modes of access: a rich client, a
Web browser, and scripts (via Web services). The rich client allows the user to
perform complex queries and submit requests for data that are asynchronously
down-loaded to the local workstation. Asynchronous down-load is a critical feature
given the large volume of a typical data set (on the order of 40 GB). For
basic queries and retrieval of data the Web browser interface is provided. For
advanced users, scripting languages with web services capabilities (i.e. Perl) can
used to query and down-load data from the SA. The archive interface subsystem
is the primary means for searching and retrieving data from the SA and is
critical to the success of the Spitzer Space Telescope.
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