storage: Use timeout for boltdb database opening #3148
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fyfyrchik
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To dump the DB, the service must be stopped. If this is not the case `dump` command just hangs without any output, which _may_ be unexpected from the ops POV. Introduce a 1 second timeous, which is more than enough, given that bbolt retries doing flock() every 50ms. Signed-off-by: Evgenii Stratonikov <fyfyrchik@runbox.com>
roman-khimov
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Oct 6, 2023
AnnaShaleva
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Oct 9, 2023
Codecov Report
@@ Coverage Diff @@
## master #3148 +/- ##
==========================================
- Coverage 84.84% 84.84% -0.01%
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Files 330 330
Lines 44332 44337 +5
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+ Hits 37615 37617 +2
- Misses 5204 5206 +2
- Partials 1513 1514 +1
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Problem
To dump the DB, the service must be stopped. If this is not the case
dumpcommand just hangs without any output.This may be unexpected from the ops POV (hello, @532910).
Solution
Introduce timeout for bbolt db open. I have decided not to put it in the configuration, because 5 seconds is more than enough, given that flock retry is 50 milliseconds
https://github.com/etcd-io/bbolt/blob/db45d0d6b1f6d173baad00019fdc7c58ad0ab002/db.go#L19
https://github.com/etcd-io/bbolt/blob/db45d0d6b1f6d173baad00019fdc7c58ad0ab002/db.go#L222
Do you think this is worth having in the configuration (like I dump and then stop the service and expect dump to work for such a usecase)?