docker/opts/port.go

100 строки
2.3 KiB
Go

package opts
import (
"encoding/csv"
"fmt"
"strconv"
"strings"
"github.com/docker/docker/api/types/swarm"
)
const (
portOptTargetPort = "target"
portOptPublishedPort = "published"
portOptProtocol = "protocol"
portOptMode = "mode"
)
type PortOpt struct {
ports []swarm.PortConfig
}
// Set a new port value
func (p *PortOpt) Set(value string) error {
csvReader := csv.NewReader(strings.NewReader(value))
fields, err := csvReader.Read()
if err != nil {
return err
}
pConfig := swarm.PortConfig{}
for _, field := range fields {
parts := strings.SplitN(field, "=", 2)
if len(parts) != 2 {
return fmt.Errorf("invalid field %s", field)
}
key := strings.ToLower(parts[0])
value := strings.ToLower(parts[1])
switch key {
case portOptProtocol:
if value != string(swarm.PortConfigProtocolTCP) && value != string(swarm.PortConfigProtocolUDP) {
return fmt.Errorf("invalid protocol value %s", value)
}
pConfig.Protocol = swarm.PortConfigProtocol(value)
case portOptMode:
if value != string(swarm.PortConfigPublishModeIngress) && value != string(swarm.PortConfigPublishModeHost) {
return fmt.Errorf("invalid publish mode value %s", value)
}
pConfig.PublishMode = swarm.PortConfigPublishMode(value)
case portOptTargetPort:
tPort, err := strconv.ParseUint(value, 10, 16)
if err != nil {
return err
}
pConfig.TargetPort = uint32(tPort)
case portOptPublishedPort:
pPort, err := strconv.ParseUint(value, 10, 16)
if err != nil {
return err
}
pConfig.PublishedPort = uint32(pPort)
default:
return fmt.Errorf("invalid field key %s", key)
}
}
if pConfig.TargetPort == 0 {
return fmt.Errorf("missing mandatory field %q", portOptTargetPort)
}
p.ports = append(p.ports, pConfig)
return nil
}
// Type returns the type of this option
func (p *PortOpt) Type() string {
return "port"
}
// String returns a string repr of this option
func (p *PortOpt) String() string {
ports := []string{}
for _, port := range p.ports {
repr := fmt.Sprintf("%v:%v/%s/%s", port.PublishedPort, port.TargetPort, port.Protocol, port.PublishMode)
ports = append(ports, repr)
}
return strings.Join(ports, ", ")
}
// Value returns the ports
func (p *PortOpt) Value() []swarm.PortConfig {
return p.ports
}