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@@ -0,0 +1,98 @@
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+package opts
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+
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+import (
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+ "encoding/csv"
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+ "fmt"
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+ "os"
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+ "strconv"
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+ "strings"
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+
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+ swarmtypes "github.com/docker/docker/api/types/swarm"
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+)
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+
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+// ConfigOpt is a Value type for parsing configs
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+type ConfigOpt struct {
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+ values []*swarmtypes.ConfigReference
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+}
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+
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+// Set a new config value
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+func (o *ConfigOpt) Set(value string) error {
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+ csvReader := csv.NewReader(strings.NewReader(value))
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+ fields, err := csvReader.Read()
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+ if err != nil {
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+ return err
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+ }
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+
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+ options := &swarmtypes.ConfigReference{
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+ File: &swarmtypes.ConfigReferenceFileTarget{
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+ UID: "0",
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+ GID: "0",
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+ Mode: 0444,
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+ },
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+ }
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+
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+ // support a simple syntax of --config foo
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+ if len(fields) == 1 {
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+ options.File.Name = fields[0]
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+ options.ConfigName = fields[0]
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+ o.values = append(o.values, options)
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+ return nil
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+ }
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+
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+ for _, field := range fields {
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+ parts := strings.SplitN(field, "=", 2)
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+ key := strings.ToLower(parts[0])
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+
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+ if len(parts) != 2 {
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+ return fmt.Errorf("invalid field '%s' must be a key=value pair", field)
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+ }
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+
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+ value := parts[1]
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+ switch key {
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+ case "source", "src":
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+ options.ConfigName = value
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+ case "target":
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+ options.File.Name = value
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+ case "uid":
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+ options.File.UID = value
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+ case "gid":
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+ options.File.GID = value
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+ case "mode":
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+ m, err := strconv.ParseUint(value, 0, 32)
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+ if err != nil {
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+ return fmt.Errorf("invalid mode specified: %v", err)
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+ }
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+
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+ options.File.Mode = os.FileMode(m)
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+ default:
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+ return fmt.Errorf("invalid field in config request: %s", key)
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+ }
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+ }
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+
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+ if options.ConfigName == "" {
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+ return fmt.Errorf("source is required")
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+ }
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+
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+ o.values = append(o.values, options)
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+ return nil
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+}
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+
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+// Type returns the type of this option
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+func (o *ConfigOpt) Type() string {
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+ return "config"
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+}
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+
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+// String returns a string repr of this option
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+func (o *ConfigOpt) String() string {
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+ configs := []string{}
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+ for _, config := range o.values {
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+ repr := fmt.Sprintf("%s -> %s", config.ConfigName, config.File.Name)
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+ configs = append(configs, repr)
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+ }
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+ return strings.Join(configs, ", ")
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+}
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+
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+// Value returns the config requests
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+func (o *ConfigOpt) Value() []*swarmtypes.ConfigReference {
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+ return o.values
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+}
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