github.com/demonoid81/moby@v0.0.0-20200517203328-62dd8e17c460/opts/runtime.go (about) 1 package opts // import "github.com/demonoid81/moby/opts" 2 3 import ( 4 "fmt" 5 "strings" 6 7 "github.com/demonoid81/moby/api/types" 8 ) 9 10 // RuntimeOpt defines a map of Runtimes 11 type RuntimeOpt struct { 12 name string 13 stockRuntimeName string 14 values *map[string]types.Runtime 15 } 16 17 // NewNamedRuntimeOpt creates a new RuntimeOpt 18 func NewNamedRuntimeOpt(name string, ref *map[string]types.Runtime, stockRuntime string) *RuntimeOpt { 19 if ref == nil { 20 ref = &map[string]types.Runtime{} 21 } 22 return &RuntimeOpt{name: name, values: ref, stockRuntimeName: stockRuntime} 23 } 24 25 // Name returns the name of the NamedListOpts in the configuration. 26 func (o *RuntimeOpt) Name() string { 27 return o.name 28 } 29 30 // Set validates and updates the list of Runtimes 31 func (o *RuntimeOpt) Set(val string) error { 32 parts := strings.SplitN(val, "=", 2) 33 if len(parts) != 2 { 34 return fmt.Errorf("invalid runtime argument: %s", val) 35 } 36 37 parts[0] = strings.TrimSpace(parts[0]) 38 parts[1] = strings.TrimSpace(parts[1]) 39 if parts[0] == "" || parts[1] == "" { 40 return fmt.Errorf("invalid runtime argument: %s", val) 41 } 42 43 parts[0] = strings.ToLower(parts[0]) 44 if parts[0] == o.stockRuntimeName { 45 return fmt.Errorf("runtime name '%s' is reserved", o.stockRuntimeName) 46 } 47 48 if _, ok := (*o.values)[parts[0]]; ok { 49 return fmt.Errorf("runtime '%s' was already defined", parts[0]) 50 } 51 52 (*o.values)[parts[0]] = types.Runtime{Path: parts[1]} 53 54 return nil 55 } 56 57 // String returns Runtime values as a string. 58 func (o *RuntimeOpt) String() string { 59 var out []string 60 for k := range *o.values { 61 out = append(out, k) 62 } 63 64 return fmt.Sprintf("%v", out) 65 } 66 67 // GetMap returns a map of Runtimes (name: path) 68 func (o *RuntimeOpt) GetMap() map[string]types.Runtime { 69 if o.values != nil { 70 return *o.values 71 } 72 73 return map[string]types.Runtime{} 74 } 75 76 // Type returns the type of the option 77 func (o *RuntimeOpt) Type() string { 78 return "runtime" 79 }