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moby--moby/opts/address_pools.go
Sebastiaan van Stijn f23c00d870
Various code-cleanup
remove unnescessary import aliases, brackets, and so on.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2018-05-23 17:50:54 +02:00

84 lines
1.8 KiB
Go

package opts
import (
"encoding/csv"
"encoding/json"
"fmt"
"strconv"
"strings"
types "github.com/docker/libnetwork/ipamutils"
)
// PoolsOpt is a Value type for parsing the default address pools definitions
type PoolsOpt struct {
values []*types.NetworkToSplit
}
// UnmarshalJSON fills values structure info from JSON input
func (p *PoolsOpt) UnmarshalJSON(raw []byte) error {
return json.Unmarshal(raw, &(p.values))
}
// Set predefined pools
func (p *PoolsOpt) Set(value string) error {
csvReader := csv.NewReader(strings.NewReader(value))
fields, err := csvReader.Read()
if err != nil {
return err
}
poolsDef := types.NetworkToSplit{}
for _, field := range fields {
parts := strings.SplitN(field, "=", 2)
if len(parts) != 2 {
return fmt.Errorf("invalid field '%s' must be a key=value pair", field)
}
key := strings.ToLower(parts[0])
value := strings.ToLower(parts[1])
switch key {
case "base":
poolsDef.Base = value
case "size":
size, err := strconv.Atoi(value)
if err != nil {
return fmt.Errorf("invalid size value: %q (must be integer): %v", value, err)
}
poolsDef.Size = size
default:
return fmt.Errorf("unexpected key '%s' in '%s'", key, field)
}
}
p.values = append(p.values, &poolsDef)
return nil
}
// Type returns the type of this option
func (p *PoolsOpt) Type() string {
return "pool-options"
}
// String returns a string repr of this option
func (p *PoolsOpt) String() string {
var pools []string
for _, pool := range p.values {
repr := fmt.Sprintf("%s %d", pool.Base, pool.Size)
pools = append(pools, repr)
}
return strings.Join(pools, ", ")
}
// Value returns the mounts
func (p *PoolsOpt) Value() []*types.NetworkToSplit {
return p.values
}
// Name returns the flag name of this option
func (p *PoolsOpt) Name() string {
return "default-address-pools"
}