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|
package opts
import (
"encoding/csv"
"fmt"
"os"
"strconv"
"strings"
swarmtypes "github.com/docker/docker/api/types/swarm"
)
// SecretOpt is a Value type for parsing secrets
type SecretOpt struct {
values []*swarmtypes.SecretReference
}
// Set a new secret value
func (o *SecretOpt) Set(value string) error {
csvReader := csv.NewReader(strings.NewReader(value))
fields, err := csvReader.Read()
if err != nil {
return err
}
options := &swarmtypes.SecretReference{
File: &swarmtypes.SecretReferenceFileTarget{
UID: "0",
GID: "0",
Mode: 0444,
},
}
// support a simple syntax of --secret foo
if len(fields) == 1 && !strings.Contains(fields[0], "=") {
options.File.Name = fields[0]
options.SecretName = fields[0]
o.values = append(o.values, options)
return nil
}
for _, field := range fields {
parts := strings.SplitN(field, "=", 2)
key := strings.ToLower(parts[0])
if len(parts) != 2 {
return fmt.Errorf("invalid field '%s' must be a key=value pair", field)
}
value := parts[1]
switch key {
case "source", "src":
options.SecretName = value
case "target":
options.File.Name = value
case "uid":
options.File.UID = value
case "gid":
options.File.GID = value
case "mode":
m, err := strconv.ParseUint(value, 0, 32)
if err != nil {
return fmt.Errorf("invalid mode specified: %v", err)
}
options.File.Mode = os.FileMode(m)
default:
return fmt.Errorf("invalid field in secret request: %s", key)
}
}
if options.SecretName == "" {
return fmt.Errorf("source is required")
}
if options.File.Name == "" {
options.File.Name = options.SecretName
}
o.values = append(o.values, options)
return nil
}
// Type returns the type of this option
func (o *SecretOpt) Type() string {
return "secret"
}
// String returns a string repr of this option
func (o *SecretOpt) String() string {
secrets := []string{}
for _, secret := range o.values {
repr := fmt.Sprintf("%s -> %s", secret.SecretName, secret.File.Name)
secrets = append(secrets, repr)
}
return strings.Join(secrets, ", ")
}
// Value returns the secret requests
func (o *SecretOpt) Value() []*swarmtypes.SecretReference {
return o.values
}
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