package command import ( "fmt" "log" "strings" "github.com/hashicorp/terraform/plugin" "github.com/kardianos/osext" ) // InternalPluginCommand is a Command implementation that allows plugins to be // compiled into the main Terraform binary and executed via a subcommand. type InternalPluginCommand struct { Meta } const TFSPACE = "-TFSPACE-" // BuildPluginCommandString builds a special string for executing internal // plugins. It has the following format: // // /path/to/terraform-TFSPACE-internal-plugin-TFSPACE-terraform-provider-aws // // We split the string on -TFSPACE- to build the command executor. The reason we // use -TFSPACE- is so we can support spaces in the /path/to/terraform part. func BuildPluginCommandString(pluginType, pluginName string) (string, error) { terraformPath, err := osext.Executable() if err != nil { return "", err } parts := []string{terraformPath, "internal-plugin", pluginType, pluginName} return strings.Join(parts, TFSPACE), nil } func (c *InternalPluginCommand) Run(args []string) int { if len(args) != 2 { log.Printf("Wrong number of args; expected: terraform internal-plugin pluginType pluginName") return 1 } pluginType := args[0] pluginName := args[1] log.SetPrefix(fmt.Sprintf("%s-%s (internal) ", pluginName, pluginType)) switch pluginType { case "provider": pluginFunc, found := InternalProviders[pluginName] if !found { log.Printf("[ERROR] Could not load provider: %s", pluginName) return 1 } log.Printf("[INFO] Starting provider plugin %s", pluginName) plugin.Serve(&plugin.ServeOpts{ ProviderFunc: pluginFunc, }) case "provisioner": pluginFunc, found := InternalProvisioners[pluginName] if !found { log.Printf("[ERROR] Could not load provisioner: %s", pluginName) return 1 } log.Printf("[INFO] Starting provisioner plugin %s", pluginName) plugin.Serve(&plugin.ServeOpts{ ProvisionerFunc: pluginFunc, }) default: log.Printf("[ERROR] Invalid plugin type %s", pluginType) return 1 } return 0 } func (c *InternalPluginCommand) Help() string { helpText := ` Usage: terraform internal-plugin pluginType pluginName Runs an internally-compiled version of a plugin from the terraform binary. NOTE: this is an internal command and you should not call it yourself. ` return strings.TrimSpace(helpText) } func (c *InternalPluginCommand) Synopsis() string { return "internal plugin command" }