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implement GC keyword for CNI spec 1.1
Signed-off-by: Henry Wang <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| // Copyright 2022 The Go Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style | ||
| // license that can be found in the LICENSE file. | ||
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| // Copyright the CNI authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // | ||
| // Adapted from errors/join.go from go 1.20 | ||
| // This package can be removed once the toolchain is updated to 1.20 | ||
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| package multierror | ||
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| // Join returns an error that wraps the given errors. | ||
| // Any nil error values are discarded. | ||
| // Join returns nil if every value in errs is nil. | ||
| // The error formats as the concatenation of the strings obtained | ||
| // by calling the Error method of each element of errs, with a newline | ||
| // between each string. | ||
| // | ||
| // A non-nil error returned by Join implements the Unwrap() []error method. | ||
| func Join(errs ...error) error { | ||
| n := 0 | ||
| for _, err := range errs { | ||
| if err != nil { | ||
| n++ | ||
| } | ||
| } | ||
| if n == 0 { | ||
| return nil | ||
| } | ||
| e := &multiError{ | ||
| errs: make([]error, 0, n), | ||
| } | ||
| for _, err := range errs { | ||
| if err != nil { | ||
| e.errs = append(e.errs, err) | ||
| } | ||
| } | ||
| return e | ||
| } | ||
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| type multiError struct { | ||
| errs []error | ||
| } | ||
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| func (e *multiError) Error() string { | ||
| var b []byte | ||
| for i, err := range e.errs { | ||
| if i > 0 { | ||
| b = append(b, '\n') | ||
| } | ||
| b = append(b, err.Error()...) | ||
| } | ||
| return string(b) | ||
| } |
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