open-consul/command/version.go

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