34 lines
1.2 KiB
Go
34 lines
1.2 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 filters
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// Adaptor specifies the mapping of fieldpaths to a type. For the given field
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// path, the value and whether it is present should be returned. The mapping of
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// the fieldpath to a field is deferred to the adaptor implementation, but
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// should generally follow protobuf field path/mask semantics.
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type Adaptor interface {
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Field(fieldpath []string) (value string, present bool)
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}
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// AdapterFunc allows implementation specific matching of fieldpaths
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type AdapterFunc func(fieldpath []string) (string, bool)
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// Field returns the field name and true if it exists
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func (fn AdapterFunc) Field(fieldpath []string) (string, bool) {
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return fn(fieldpath)
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}
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