108 lines
3.4 KiB
Go
108 lines
3.4 KiB
Go
package opts
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/docker/docker/api/types/blkiodev"
|
|
"github.com/docker/go-units"
|
|
)
|
|
|
|
// ValidatorThrottleFctType defines a validator function that returns a validated struct and/or an error.
|
|
type ValidatorThrottleFctType func(val string) (*blkiodev.ThrottleDevice, error)
|
|
|
|
// ValidateThrottleBpsDevice validates that the specified string has a valid device-rate format.
|
|
func ValidateThrottleBpsDevice(val string) (*blkiodev.ThrottleDevice, error) {
|
|
split := strings.SplitN(val, ":", 2)
|
|
if len(split) != 2 {
|
|
return nil, fmt.Errorf("bad format: %s", val)
|
|
}
|
|
if !strings.HasPrefix(split[0], "/dev/") {
|
|
return nil, fmt.Errorf("bad format for device path: %s", val)
|
|
}
|
|
rate, err := units.RAMInBytes(split[1])
|
|
if err != nil {
|
|
return nil, fmt.Errorf("invalid rate for device: %s. The correct format is <device-path>:<number>[<unit>]. Number must be a positive integer. Unit is optional and can be kb, mb, or gb", val)
|
|
}
|
|
if rate < 0 {
|
|
return nil, fmt.Errorf("invalid rate for device: %s. The correct format is <device-path>:<number>[<unit>]. Number must be a positive integer. Unit is optional and can be kb, mb, or gb", val)
|
|
}
|
|
|
|
return &blkiodev.ThrottleDevice{
|
|
Path: split[0],
|
|
Rate: uint64(rate),
|
|
}, nil
|
|
}
|
|
|
|
// ValidateThrottleIOpsDevice validates that the specified string has a valid device-rate format.
|
|
func ValidateThrottleIOpsDevice(val string) (*blkiodev.ThrottleDevice, error) {
|
|
split := strings.SplitN(val, ":", 2)
|
|
if len(split) != 2 {
|
|
return nil, fmt.Errorf("bad format: %s", val)
|
|
}
|
|
if !strings.HasPrefix(split[0], "/dev/") {
|
|
return nil, fmt.Errorf("bad format for device path: %s", val)
|
|
}
|
|
rate, err := strconv.ParseUint(split[1], 10, 64)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("invalid rate for device: %s. The correct format is <device-path>:<number>. Number must be a positive integer", val)
|
|
}
|
|
if rate < 0 {
|
|
return nil, fmt.Errorf("invalid rate for device: %s. The correct format is <device-path>:<number>. Number must be a positive integer", val)
|
|
}
|
|
|
|
return &blkiodev.ThrottleDevice{Path: split[0], Rate: rate}, nil
|
|
}
|
|
|
|
// ThrottledeviceOpt defines a map of ThrottleDevices
|
|
type ThrottledeviceOpt struct {
|
|
values []*blkiodev.ThrottleDevice
|
|
validator ValidatorThrottleFctType
|
|
}
|
|
|
|
// NewThrottledeviceOpt creates a new ThrottledeviceOpt
|
|
func NewThrottledeviceOpt(validator ValidatorThrottleFctType) ThrottledeviceOpt {
|
|
values := []*blkiodev.ThrottleDevice{}
|
|
return ThrottledeviceOpt{
|
|
values: values,
|
|
validator: validator,
|
|
}
|
|
}
|
|
|
|
// Set validates a ThrottleDevice and sets its name as a key in ThrottledeviceOpt
|
|
func (opt *ThrottledeviceOpt) Set(val string) error {
|
|
var value *blkiodev.ThrottleDevice
|
|
if opt.validator != nil {
|
|
v, err := opt.validator(val)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
value = v
|
|
}
|
|
(opt.values) = append((opt.values), value)
|
|
return nil
|
|
}
|
|
|
|
// String returns ThrottledeviceOpt values as a string.
|
|
func (opt *ThrottledeviceOpt) String() string {
|
|
var out []string
|
|
for _, v := range opt.values {
|
|
out = append(out, v.String())
|
|
}
|
|
|
|
return fmt.Sprintf("%v", out)
|
|
}
|
|
|
|
// GetList returns a slice of pointers to ThrottleDevices.
|
|
func (opt *ThrottledeviceOpt) GetList() []*blkiodev.ThrottleDevice {
|
|
var throttledevice []*blkiodev.ThrottleDevice
|
|
throttledevice = append(throttledevice, opt.values...)
|
|
|
|
return throttledevice
|
|
}
|
|
|
|
// Type returns the option type
|
|
func (opt *ThrottledeviceOpt) Type() string {
|
|
return "list"
|
|
}
|