3.2 Base infrastructure :
The base infrastructure for the runtime framework gives essential services like logging, message dispatching , communication, security, network membership, and persistence functions that is then utilized by the main services, and it is possible to substitute various implementation of these basic functional services corresponding to the needs of the services. For example, user can select different kind of security method by editing the configuration files, and the runtime machine will connect them on demand by the services. The system also allows various types of persistence methods like memory, file or database back ends in a same way. The message dispatcher module acts like a front controller and allows point to point service communication. All requests from the …show more content…
IT may simply obtain maps from raw data; or might perform high analytical functions like feature extraction or coordinate transformation. It provides data, maps, or other inputs to user applications or to other services, that what is known as "service chaining." Geospatial data services contains of two main components, the scheduler and the worker. The scheduler is maintained for monitoring the status of every worker, dispatching ready tasks to respective workers and tracks the progress of each job respective to the data dependency graph. It is designed as a set of four main services: Registry service handles the location information for available geospatial data. It contains a list of indices for every available geospatial data. Dataflow service keeps track of the data dependency for each job and keeps track of the availability of jobs and explores ready jobs. As it finds ready jobs, it will tell the scheduler component. Scheduling service is responsible for organizing the execution of job units containing the application, Sending them to various nodes, obtaining back the output, and giving them to the