mirror of https://github.com/k3s-io/k3s
63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes 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.
|
|
*/
|
|
|
|
package fields
|
|
|
|
import (
|
|
"sort"
|
|
"strings"
|
|
)
|
|
|
|
// Fields allows you to present fields independently from their storage.
|
|
type Fields interface {
|
|
// Has returns whether the provided field exists.
|
|
Has(field string) (exists bool)
|
|
|
|
// Get returns the value for the provided field.
|
|
Get(field string) (value string)
|
|
}
|
|
|
|
// Set is a map of field:value. It implements Fields.
|
|
type Set map[string]string
|
|
|
|
// String returns all fields listed as a human readable string.
|
|
// Conveniently, exactly the format that ParseSelector takes.
|
|
func (ls Set) String() string {
|
|
selector := make([]string, 0, len(ls))
|
|
for key, value := range ls {
|
|
selector = append(selector, key+"="+value)
|
|
}
|
|
// Sort for determinism.
|
|
sort.StringSlice(selector).Sort()
|
|
return strings.Join(selector, ",")
|
|
}
|
|
|
|
// Has returns whether the provided field exists in the map.
|
|
func (ls Set) Has(field string) bool {
|
|
_, exists := ls[field]
|
|
return exists
|
|
}
|
|
|
|
// Get returns the value in the map for the provided field.
|
|
func (ls Set) Get(field string) string {
|
|
return ls[field]
|
|
}
|
|
|
|
// AsSelector converts fields into a selectors.
|
|
func (ls Set) AsSelector() Selector {
|
|
return SelectorFromSet(ls)
|
|
}
|