package command import ( "fmt" "github.com/hashicorp/consul/command/agent" "github.com/hashicorp/consul/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)) 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) } c.UI.Output(fmt.Sprintf("Protocol %d spoken by default, understands %d to %d%s", config.Protocol, consul.ProtocolVersionMin, consul.ProtocolVersionMax, supplement)) return 0 } func (c *VersionCommand) Synopsis() string { return "Prints the Consul version" }