95 lines
2.3 KiB
Go
95 lines
2.3 KiB
Go
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package labels
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import (
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"encoding/json"
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"fmt"
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"github.com/docker/libcompose/utils"
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)
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// Label represents a docker label.
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type Label string
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// Libcompose default labels.
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const (
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NUMBER = Label("com.docker.compose.container-number")
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ONEOFF = Label("com.docker.compose.oneoff")
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PROJECT = Label("com.docker.compose.project")
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SERVICE = Label("com.docker.compose.service")
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HASH = Label("com.docker.compose.config-hash")
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VERSION = Label("com.docker.compose.version")
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)
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// EqString returns a label json string representation with the specified value.
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func (f Label) EqString(value string) string {
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return LabelFilterString(string(f), value)
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}
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// Eq returns a label map representation with the specified value.
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func (f Label) Eq(value string) map[string][]string {
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return LabelFilter(string(f), value)
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}
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// AndString returns a json list of labels by merging the two specified values (left and right) serialized as string.
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func AndString(left, right string) string {
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leftMap := map[string][]string{}
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rightMap := map[string][]string{}
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// Ignore errors
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json.Unmarshal([]byte(left), &leftMap)
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json.Unmarshal([]byte(right), &rightMap)
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for k, v := range rightMap {
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existing, ok := leftMap[k]
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if ok {
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leftMap[k] = append(existing, v...)
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} else {
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leftMap[k] = v
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}
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}
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result, _ := json.Marshal(leftMap)
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return string(result)
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}
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// And returns a map of labels by merging the two specified values (left and right).
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func And(left, right map[string][]string) map[string][]string {
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result := map[string][]string{}
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for k, v := range left {
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result[k] = v
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}
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for k, v := range right {
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existing, ok := result[k]
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if ok {
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result[k] = append(existing, v...)
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} else {
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result[k] = v
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}
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}
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return result
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}
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// Str returns the label name.
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func (f Label) Str() string {
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return string(f)
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}
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// LabelFilterString returns a label json string representation of the specifed couple (key,value)
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// that is used as filter for docker.
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func LabelFilterString(key, value string) string {
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return utils.FilterString(map[string][]string{
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"label": {fmt.Sprintf("%s=%s", key, value)},
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})
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}
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// LabelFilter returns a label map representation of the specifed couple (key,value)
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// that is used as filter for docker.
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func LabelFilter(key, value string) map[string][]string {
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return map[string][]string{
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"label": {fmt.Sprintf("%s=%s", key, value)},
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}
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}
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