/
lock.go
59 lines (49 loc) · 1.44 KB
/
lock.go
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// SPDX-License-Identifier: Apache-2.0
// Copyright 2018 Authors of Cilium
package endpoint
import "fmt"
var (
ErrEndpointDeleted = fmt.Errorf("lock failed: endpoint is in the process of being removed")
)
// lockAlive returns error if endpoint was removed, locks underlying mutex otherwise
func (e *Endpoint) lockAlive() error {
e.mutex.Lock()
if e.IsDisconnecting() {
e.mutex.Unlock()
return ErrEndpointDeleted
}
return nil
}
// Unlock unlocks endpoint mutex
func (e *Endpoint) unlock() {
e.mutex.Unlock()
}
// rlockAlive returns error if endpoint was removed, read locks underlying mutex otherwise
func (e *Endpoint) rlockAlive() error {
e.mutex.RLock()
if e.IsDisconnecting() {
e.mutex.RUnlock()
return ErrNotAlive
}
return nil
}
// runlock read unlocks endpoint mutex
func (e *Endpoint) runlock() {
e.mutex.RUnlock()
}
// unconditionalLock should be used only for locking endpoint for
// - setting its state to StateDisconnected
// - handling regular Lock errors
// - reporting endpoint status (like in LogStatus method)
// Use Lock in all other cases
func (e *Endpoint) unconditionalLock() {
e.mutex.Lock()
}
// unconditionalRLock should be used only for reporting endpoint state
func (e *Endpoint) unconditionalRLock() {
e.mutex.RLock()
}
// logDisconnectedMutexAction gets the logger and logs given error with context
func (e *Endpoint) logDisconnectedMutexAction(err error, context string) {
e.getLogger().WithError(err).Debug(context)
}