open-consul/command/version.go

43 lines
1016 B
Go

package command
import (
"fmt"
"github.com/hashicorp/consul/agent/config"
"github.com/hashicorp/consul/agent/consul"
"github.com/mitchellh/cli"
)
// VersionCommand is a Command implementation prints the version.
type VersionCommand struct {
HumanVersion string
UI cli.Ui
}
func (c *VersionCommand) Help() string {
return ""
}
func (c *VersionCommand) Run(_ []string) int {
c.UI.Output(fmt.Sprintf("Consul %s", c.HumanVersion))
rpcProtocol, err := config.DefaultRPCProtocol()
if err != nil {
c.UI.Error(err.Error())
return 2
}
var supplement string
if rpcProtocol < consul.ProtocolVersionMax {
supplement = fmt.Sprintf(" (agent will automatically use protocol >%d when speaking to compatible agents)",
rpcProtocol)
}
c.UI.Output(fmt.Sprintf("Protocol %d spoken by default, understands %d to %d%s",
rpcProtocol, consul.ProtocolVersionMin, consul.ProtocolVersionMax, supplement))
return 0
}
func (c *VersionCommand) Synopsis() string {
return "Prints the Consul version"
}