Vault backend integration

[larrywax]

Draft implementation as discussed in #938

[CLAassistant]

All committers have signed the CLA.

[levkk]

Really cool, thanks for implementing this! I'm still reviewing, will get back to you with more comments if any asap.

[levkk]

Great start. A few comments on style and one important architectural issue: the vault credentials are loaded on boot only, but pgdog config is dynamic and can be reloaded without restarting, I think the current implementation will reset the credentials when this happens.

Fixed my incorrect merge conflict fix in 884f14e6391a69b11b8da22ca074ca62e5e36190 (you should be able to cherry-pick it from #960).

[larrywax]

Great start. A few comments on style and one important architectural issue: the vault credentials are loaded on boot only, but pgdog config is dynamic and can be reloaded without restarting, I think the current implementation will reset the credentials when this happens.

Fixed my incorrect merge conflict fix in 884f14e6391a69b11b8da22ca074ca62e5e36190 (you should be able to cherry-pick it from #960).

Ah I see, was not aware of it. Makes sense, thanks!

[codecov]

Codecov Report

❌ Patch coverage is 93.64005% with 47 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
pgdog/src/backend/auth/vault.rs	95.51%	17 Missing ⚠️
pgdog/src/backend/pool/monitor.rs	15.38%	11 Missing ⚠️
pgdog/src/backend/pool/inner.rs	50.00%	6 Missing ⚠️
pgdog/src/backend/pool/token_cache.rs	97.20%	4 Missing ⚠️
pgdog-config/src/users.rs	93.47%	3 Missing ⚠️
pgdog/src/backend/auth/azure_workload_identity.rs	0.00%	2 Missing ⚠️
pgdog/src/backend/server.rs	86.66%	2 Missing ⚠️
pgdog/src/backend/disconnect_reason.rs	0.00%	1 Missing ⚠️
pgdog/src/backend/pool/password.rs	0.00%	1 Missing ⚠️

📢 Thoughts on this report? Let us know!

[levkk]

This looks really good!

[levkk]

Just need one pass with the formatter and we're good to go.

[larrywax]

Just need one pass with the formatter and we're good to go.

Ops, my bad :D should be good now

[levkk]

💯