mirror of https://github.com/hashicorp/consul
32 lines
927 B
Go
32 lines
927 B
Go
// Copyright (c) HashiCorp, Inc.
|
|
// SPDX-License-Identifier: BUSL-1.1
|
|
|
|
package utils
|
|
|
|
// ResettableDefer is a way to capture a series of cleanup functions and
|
|
// bulk-cancel them. Ideal to use in a long constructor function before the
|
|
// overall Close/Stop/Terminate method is ready to use to tear down all of the
|
|
// portions properly.
|
|
type ResettableDefer struct {
|
|
cleanupFns []func()
|
|
}
|
|
|
|
// Add registers another function to call at Execute time.
|
|
func (d *ResettableDefer) Add(f func()) {
|
|
d.cleanupFns = append(d.cleanupFns, f)
|
|
}
|
|
|
|
// Reset clears the pending defer work.
|
|
func (d *ResettableDefer) Reset() {
|
|
d.cleanupFns = nil
|
|
}
|
|
|
|
// Execute actually executes the functions registered by Add in the reverse
|
|
// order of their call order (like normal defer blocks).
|
|
func (d *ResettableDefer) Execute() {
|
|
// Run these in reverse order, like defer blocks.
|
|
for i := len(d.cleanupFns) - 1; i >= 0; i-- {
|
|
d.cleanupFns[i]()
|
|
}
|
|
}
|