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Hugo Vieira bed6e1a0ff feat(server): Reload database on SIGHUP ... If the database url is updated on Boundary's config and then a SIGHUP triggered, we now connect to the new database, ensure it's OK to use and use that one going forwards instead. This allows a controller to be deployed in a more dynamic infrastructure where, for example, database credentials could change, without having to restart the controller. In this case only a database url config change and a SIGHUP signal to all controllers would be required. This uses an atomic.Pointer to store wrapped DB objects. This allows atomically swapping to the new object. A timeout is introduced so that if the object is swapped after the existing one has been looked up it isn't immediately invalidated. The timeout is a maximum; a ticker once a second that looks at stats to determine how many database connections are still in use and then closes the driver as soon as none are in use. This could be done with mutexes to avoid checking stats in a loop, but that carries its own risk: if a write lock is attempted to be acquired while a query is holding a read lock, the write lock will block, and any subsequent read locks will also block since write locks take priority. As a result, if a query is long-running or timing out, all other queries in the system will become blocked. Our default user request timeout is 90 seconds and some jobs have no timeout at all, so this is not a purely theoretical concern, even if it's unlikely. Refs: #2435 Co-authored-by: Jeff Mitchell <jeffrey.mitchell@gmail.com>		4 years ago
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store	Update grpc-gateway dependency (#2311)	4 years ago
const.go	feat(worker): implements WorkerAuthStorage wrapper for worker credential encryption (#2076)	4 years ago
external_wrappers.go	refactor (kms): adopt the go-kms-wrapping/extras/kms package (#2027)	4 years ago
external_wrappers_test.go	feat(worker): implements WorkerAuthStorage wrapper for worker credential encryption (#2076)	4 years ago
kms.go	feat(server): Reload database on SIGHUP	4 years ago
kms_ext_test.go	feat(server): Reload database on SIGHUP	4 years ago
kms_test.go	feat(server): Reload database on SIGHUP	4 years ago
option_test.go	refactor (kms): adopt the go-kms-wrapping/extras/kms package (#2027)	4 years ago
options.go	feat(worker): implements WorkerAuthStorage wrapper for worker credential encryption (#2076)	4 years ago
testing.go	refactor (kms): adopt the go-kms-wrapping/extras/kms package (#2027)	4 years ago