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// Package naming centralizes the naming of SwarmKit objects.
package naming
import (
"errors"
"fmt"
"strings"
"github.com/moby/swarmkit/v2/api"
)
var (
errUnknownRuntime = errors.New("unrecognized runtime")
)
// Task returns the task name from Annotations.Name,
// and, in case Annotations.Name is missing, fallback
// to construct the name from other information.
func Task(t *api.Task) string {
if t.Annotations.Name != "" {
// if set, use the container Annotations.Name field, set in the orchestrator.
return t.Annotations.Name
}
slot := fmt.Sprint(t.Slot)
if slot == "" || t.Slot == 0 {
// when no slot id is assigned, we assume that this is node-bound task.
slot = t.NodeID
}
// fallback to service.instance.id.
return fmt.Sprintf("%s.%s.%s", t.ServiceAnnotations.Name, slot, t.ID)
}
// TODO(stevvooe): Consolidate "Hostname" style validation here.
// Runtime returns the runtime name from a given spec.
func Runtime(t api.TaskSpec) (string, error) {
switch r := t.GetRuntime().(type) {
case *api.TaskSpec_Attachment:
return "attachment", nil
case *api.TaskSpec_Container:
return "container", nil
case *api.TaskSpec_Generic:
return strings.ToLower(r.Generic.Kind), nil
default:
return "", errUnknownRuntime
}
}
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