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labels.go
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labels.go
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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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.
package types
import (
"fmt"
"strings"
)
// Labels contains a series of labels.
type Labels map[string]string
// IsSubsetOf checks whether the current Labels is the subset of
// the passed Labels.
func (s Labels) IsSubsetOf(f Labels) bool {
if len(s) == 0 {
// Empty labels matches everything.
return true
}
for k, v := range s {
if vv, ok := f[k]; !ok || vv != v {
return false
}
}
return true
}
// MultiValueLabels contains a series of labels with multiple values.
type MultiValueLabels map[string][]string
func (s MultiValueLabels) BuildQuery() []string {
query := []string{}
for k, v := range s {
query = append(query, fmt.Sprintf("%s in (%s)", k, strings.Join(v, ",")))
}
return query
}
// IsSubsetOf checks whether the current Labels is the subset of
// the passed Labels.
func (s MultiValueLabels) IsSubsetOf(f Labels) bool {
if len(s) == 0 {
// Empty labels matches everything.
return true
}
for key, vals := range s {
if val, ok := f[key]; !ok || !arrContains(vals, val) {
return false
}
}
return true
}
func arrContains(arr []string, ele string) bool {
for _, e := range arr {
if e == ele {
return true
}
}
return false
}