mirror of https://github.com/goharbor/harbor.git
91 lines
2.0 KiB
Go
91 lines
2.0 KiB
Go
// Copyright Project Harbor Authors
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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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package label
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import (
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"strings"
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iselector "github.com/goharbor/harbor/src/lib/selector"
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)
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const (
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// Kind ...
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Kind = "label"
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// With labels
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With = "withLabels"
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// Without labels
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Without = "withoutLabels"
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)
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// selector is for label selector
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type selector struct {
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// Pre defined pattern decorations
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// "with" or "without"
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decoration string
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// Label list
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labels []string
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}
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// Select candidates by the labels
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func (s *selector) Select(artifacts []*iselector.Candidate) (selected []*iselector.Candidate, err error) {
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for _, art := range artifacts {
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if isMatched(s.labels, art.Labels, s.decoration) {
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selected = append(selected, art)
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}
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}
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return selected, nil
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}
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// New is factory method for label selector
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func New(decoration string, pattern interface{}, _ string) iselector.Selector {
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labels := make([]string, 0)
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if pattern != nil {
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labelText, ok := pattern.(string)
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if ok && len(labelText) > 0 {
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labels = append(labels, strings.Split(labelText, ",")...)
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}
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}
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return &selector{
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decoration: decoration,
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labels: labels,
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}
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}
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// Check if the resource labels match the pattern labels
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func isMatched(patternLbls []string, resLbls []string, decoration string) bool {
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hash := make(map[string]bool)
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for _, lbl := range resLbls {
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hash[lbl] = true
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}
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for _, lbl := range patternLbls {
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_, exists := hash[lbl]
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if decoration == Without && exists {
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return false
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}
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if decoration == With && !exists {
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return false
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}
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}
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return true
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}
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