1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
package labels
import (
"fmt"
"strings"
)
const (
// ForServiceName is the label for the service name.
ForServiceName = "com.docker.service.name"
// ForStackName is the label for the stack name.
ForStackName = "com.docker.stack.namespace"
// ForServiceID is the label for the service id.
ForServiceID = "com.docker.service.id"
)
// ForService gives the labels to select a given service in a stack.
func ForService(stackName, serviceName string) map[string]string {
labels := map[string]string{}
if serviceName != "" {
labels[ForServiceName] = serviceName
}
if stackName != "" {
labels[ForStackName] = stackName
}
if serviceName != "" && stackName != "" {
labels[ForServiceID] = stackName + "-" + serviceName
}
return labels
}
// SelectorForStack gives the labelSelector to use for a given stack.
// Specific service names can be passed to narrow down the selection.
func SelectorForStack(stackName string, serviceNames ...string) string {
switch len(serviceNames) {
case 0:
return fmt.Sprintf("%s=%s", ForStackName, stackName)
case 1:
return fmt.Sprintf("%s=%s,%s=%s", ForStackName, stackName, ForServiceName, serviceNames[0])
default:
return fmt.Sprintf("%s=%s,%s in (%s)", ForStackName, stackName, ForServiceName, strings.Join(serviceNames, ","))
}
}
|
