package command import ( "bytes" "fmt" ) // VersionCommand is a Command implementation prints the version. type VersionCommand struct { Meta Revision string Version string VersionPrerelease string CheckFunc VersionCheckFunc } // VersionCheckFunc is the callback called by the Version command to // check if there is a new version of Terraform. type VersionCheckFunc func() (VersionCheckInfo, error) // VersionCheckInfo is the return value for the VersionCheckFunc callback // and tells the Version command information about the latest version // of Terraform. type VersionCheckInfo struct { Outdated bool Latest string Alerts []string } func (c *VersionCommand) Help() string { return "" } func (c *VersionCommand) Run(args []string) int { var versionString bytes.Buffer args, err := c.Meta.process(args, false) if err != nil { return 1 } fmt.Fprintf(&versionString, "Terraform v%s", c.Version) if c.VersionPrerelease != "" { fmt.Fprintf(&versionString, "-%s", c.VersionPrerelease) if c.Revision != "" { fmt.Fprintf(&versionString, " (%s)", c.Revision) } } c.Ui.Output(versionString.String()) // If we have a version check function, then let's check for // the latest version as well. if c.CheckFunc != nil { // Separate the prior output with a newline c.Ui.Output("") // Check the latest version info, err := c.CheckFunc() if err != nil { c.Ui.Error(fmt.Sprintf( "Error checking latest version: %s", err)) } if info.Outdated { c.Ui.Output(fmt.Sprintf( "Your version of Terraform is out of date! The latest version\n"+ "is %s. You can update by downloading from www.terraform.io/downloads.html", info.Latest)) } } return 0 } func (c *VersionCommand) Synopsis() string { return "Prints the Terraform version" }