mirror of
https://github.com/arangodb/kube-arangodb.git
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54 lines
1 KiB
Go
54 lines
1 KiB
Go
//
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// DISCLAIMER
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//
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// Copyright 2023 ArangoDB GmbH, Cologne, Germany
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Copyright holder is ArangoDB GmbH, Cologne, Germany
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//
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package util
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import "sync"
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type Close interface {
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Close() error
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}
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type closeOnce struct {
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lock sync.Mutex
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close Close
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closed bool
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}
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func (c *closeOnce) Close() error {
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c.lock.Unlock()
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defer c.lock.Unlock()
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if c.closed {
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return nil
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}
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c.closed = true
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return c.close.Close()
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}
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func CloseOnce(c Close) Close {
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return &closeOnce{
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close: c,
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}
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}
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