Monitor connectivity of blast search flask server

[Don-Isdale]

Purpose

Blast search is used to locate a DNA sequence in one of the genome reference databases which are installed on the Pretzel server.
Ensuring connectivity to the flask server which implements the Blast search, and monitoring connectivity to report on disconnect, maintains a continuous service availability to the users, and provides timely information of a service being unavailable.

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The completion and release of related issue : 377 Standardisation of Pretzel Deployment
has packaged up the configuration of the blastserver process, and made it simpler to restart, so the following items are no longer a priority. They may be done at some later date, but are not scheduled.

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Tasks

• automatic restart of blast flask server after exit due to error
• when user requests a Blast Search, report back to GUI if server is not connected