mirror of
https://github.com/hashicorp/vault.git
synced 2025-08-22 15:11:07 +02:00
837a5fef88
* improve: extract logic to select either locking.DeadlockRWMutex or locking.SyncRWMutex out of CreateCore and into their own functions * add copyright header for new files * move new files to helper/locking package * adjust names of helper functions moved to locking package
45 lines
1.6 KiB
Go
45 lines
1.6 KiB
Go
// Copyright (c) HashiCorp, Inc.
|
|
// SPDX-License-Identifier: BUSL-1.1
|
|
|
|
package locking
|
|
|
|
import (
|
|
"slices"
|
|
"strings"
|
|
)
|
|
|
|
// ParseDeadlockDetectionSetting takes the detectDeadlockConfigParameter string
|
|
// and transforms it to a lowercase version of the string, then splits it into
|
|
// a slice of strings by interpreting commas as the element delimiters.
|
|
func ParseDetectDeadlockConfigParameter(detectDeadlockConfigParameter string) []string {
|
|
if detectDeadlockConfigParameter == "" {
|
|
// This doesn't seem necessary, since the companion functions that use
|
|
// this slice can handle an empty slice just the same as a nil slice,
|
|
// but for the sake of compatibility, this will be introduced for now
|
|
// until all occurrences that rely on Core.detectDeadlocks have been
|
|
// switched to using functions from this file to create their locks.
|
|
return nil
|
|
}
|
|
|
|
result := strings.Split(strings.ToLower(detectDeadlockConfigParameter), ",")
|
|
for i := range result {
|
|
result[i] = strings.TrimSpace(result[i])
|
|
}
|
|
|
|
return result
|
|
}
|
|
|
|
// CreateConfigurableRWMutex determines if the specified lock (identifier) should
|
|
// use a deadlock detecting implementation (DeadlockRWMutex) or simply a basic
|
|
// sync.RWMutex instance. This is done by splitting the deadlockDetectionLocks
|
|
// string into a slice of strings. If the slice contains the specified lock
|
|
// (identifier), then the deadlock detecting implementation is used, otherwise a
|
|
// sync.Mutex is returned.
|
|
func CreateConfigurableRWMutex(deadlockDetectionLocks []string, identifier string) RWMutex {
|
|
if slices.Contains(deadlockDetectionLocks, strings.ToLower(identifier)) {
|
|
return &DeadlockRWMutex{}
|
|
}
|
|
|
|
return &SyncRWMutex{}
|
|
}
|