Check work stability if Redis shut downed

EvilLord666 commented 11 months ago

Check how would behave Ferrum if we stop Redis server, it shouldn't crashed it should respond with something like "Data Storage is not ready, please try again later", and work when storage is Up

In this task i also take some additional works:

[x] add typical error for DataStorageNotAvailable
[x] add more typical errors 4 determine what happened (ObjectNotFoundError and others), this point solves issue: #22
[x] working with typical errors (previous list item) brake me a lot of manager methods: Have to implement minimal set of tests (partially solves issue #62
[x] I should also make come clean-up in Dockerfile && docker-compose : add permanent name for containers, volumes and so on
[x] working on docker compose i change to init redis via sh. script (not using python) #44
[x] test all method on availability

EvilLord666 commented 6 months ago

Probably not only Redis but also any DataProvider, probably it is better to implement function isAvailable() and call it before every access to DS

EvilLord666 commented 4 months ago

Left only following things:

[x] manual check app work on Redis shutdown / switch on
[x] make permanent volume name 4 ferrum_webapi

Wissance / Ferrum

Check work stability if Redis shut downed #38