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42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
/*
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Copyright The containerd Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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package labels
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import (
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"fmt"
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"github.com/containerd/containerd/errdefs"
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)
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const (
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maxSize = 4096
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// maximum length of key portion of error message if len of key + len of value > maxSize
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keyMaxLen = 64
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)
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// Validate a label's key and value are under 4096 bytes
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func Validate(k, v string) error {
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total := len(k) + len(v)
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if total > maxSize {
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if len(k) > keyMaxLen {
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k = k[:keyMaxLen]
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}
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return fmt.Errorf("label key and value length (%d bytes) greater than maximum size (%d bytes), key: %s: %w", total, maxSize, k, errdefs.ErrInvalidArgument)
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}
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return nil
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}
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