GridSpace Engine of the ViroLab Virtual Laboratory

GridSpace Engine is the central operational unit of the ViroLab Virtual Laboratory. This specific runtime environment enables access to computational and data resources by coordinating execution of experiments written in the Ruby programming language extended with virtual laboratory capabilities. Experiments harness published and semantically described services which constitute a GridSpace. The GridSpace Engine is a reliable service acting as an entry point to the Virtual Laboratory, its execution capabilities and a facade for specialized services such as Data Access Service. Moreover, owing to the provided dedicated libraries, the GridSpace Engine supports interactive execution and run-time monitoring of experiments. Furthermore, the GridSpace Engine is capable of retrieving experiment source not only from file systems but also from multiple Application Repositories accessed by dedicated adapters. Currently, our repository is based on the Subversion source code management and version control system. The GridSpace Engine is also responsible for storing obtained experimental results in the Laboratory Data Base.