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Merge pull request #4701 from kzys/content-store-filter
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/* | ||
Copyright The containerd 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. | ||
*/ | ||
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package content | ||
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import ( | ||
"strings" | ||
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"github.com/containerd/containerd/filters" | ||
) | ||
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// AdoptInfo returns `filters.Adaptor` that handles `content.Info`. | ||
func AdaptInfo(info Info) filters.Adaptor { | ||
return filters.AdapterFunc(func(fieldpath []string) (string, bool) { | ||
if len(fieldpath) == 0 { | ||
return "", false | ||
} | ||
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switch fieldpath[0] { | ||
case "digest": | ||
return info.Digest.String(), true | ||
case "size": | ||
// TODO: support size based filtering | ||
case "labels": | ||
return checkMap(fieldpath[1:], info.Labels) | ||
} | ||
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return "", false | ||
}) | ||
} | ||
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func checkMap(fieldpath []string, m map[string]string) (string, bool) { | ||
if len(m) == 0 { | ||
return "", false | ||
} | ||
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value, ok := m[strings.Join(fieldpath, ".")] | ||
return value, ok | ||
} |
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