Files
coder/coderd/database/lock.go
Dean Sheather bedd2c5922 fix: avoid race between replicas on start (#12344)
DERP mesh key setup would do a SELECT and then an INSERT on failure, without a lock. During some testing with multiple replicas, I managed to cause a replica to crash due to them initializing simultaneously.

Fixes:

Encountered an error running "coder server"
create coder API: insert mesh key: pq: duplicate key value violates unique constraint "site_configs_key_key"

Co-authored-by: Cian Johnston <cian@coder.com>
2024-02-28 16:14:11 +00:00

21 lines
561 B
Go

package database
import "hash/fnv"
// Well-known lock IDs for lock functions in the database. These should not
// change. If locks are deprecated, they should be kept in this list to avoid
// reusing the same ID.
const (
// Keep the unused iota here so we don't need + 1 every time
lockIDUnused = iota
LockIDDeploymentSetup
LockIDEnterpriseDeploymentSetup
)
// GenLockID generates a unique and consistent lock ID from a given string.
func GenLockID(name string) int64 {
hash := fnv.New64()
_, _ = hash.Write([]byte(name))
return int64(hash.Sum64())
}