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moby--moby/opts/runtime.go

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package opts // import "github.com/docker/docker/opts"
import (
"fmt"
"strings"
"github.com/docker/docker/api/types"
)
// RuntimeOpt defines a map of Runtimes
type RuntimeOpt struct {
name string
stockRuntimeName string
values *map[string]types.Runtime
}
// NewNamedRuntimeOpt creates a new RuntimeOpt
func NewNamedRuntimeOpt(name string, ref *map[string]types.Runtime, stockRuntime string) *RuntimeOpt {
if ref == nil {
ref = &map[string]types.Runtime{}
}
return &RuntimeOpt{name: name, values: ref, stockRuntimeName: stockRuntime}
}
// Name returns the name of the NamedListOpts in the configuration.
func (o *RuntimeOpt) Name() string {
return o.name
}
// Set validates and updates the list of Runtimes
func (o *RuntimeOpt) Set(val string) error {
parts := strings.SplitN(val, "=", 2)
if len(parts) != 2 {
return fmt.Errorf("invalid runtime argument: %s", val)
}
parts[0] = strings.TrimSpace(parts[0])
parts[1] = strings.TrimSpace(parts[1])
if parts[0] == "" || parts[1] == "" {
return fmt.Errorf("invalid runtime argument: %s", val)
}
parts[0] = strings.ToLower(parts[0])
if parts[0] == o.stockRuntimeName {
return fmt.Errorf("runtime name '%s' is reserved", o.stockRuntimeName)
}
if _, ok := (*o.values)[parts[0]]; ok {
return fmt.Errorf("runtime '%s' was already defined", parts[0])
}
(*o.values)[parts[0]] = types.Runtime{Path: parts[1]}
return nil
}
// String returns Runtime values as a string.
func (o *RuntimeOpt) String() string {
var out []string
for k := range *o.values {
out = append(out, k)
}
return fmt.Sprintf("%v", out)
}
// GetMap returns a map of Runtimes (name: path)
func (o *RuntimeOpt) GetMap() map[string]types.Runtime {
if o.values != nil {
return *o.values
}
return map[string]types.Runtime{}
}
// Type returns the type of the option
func (o *RuntimeOpt) Type() string {
return "runtime"
}