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