RSDK-8551 - module generation in CI

Makefile

@@ -20,19 +20,24 @@ default: build lint server
 setup:
 	bash etc/setup.sh
 
-build: build-web build-go
-
-build-go:
-	go build ./...
-
 GOOS ?= $(shell go env GOOS)
 GOARCH ?= $(shell go env GOARCH)
-bin/$(GOOS)-$(GOARCH)/viam-cli:
+
+.PHONY: modulegen
+modulegen:
+	OS=$(GOOS) ARCH=$(GOARCH) ./cli/modulegen/install.sh
+
+bin/$(GOOS)-$(GOARCH)/viam-cli: modulegen
 	go build $(LDFLAGS) -tags osusergo,netgo -o $@ ./cli/viam
 
 .PHONY: cli
 cli: bin/$(GOOS)-$(GOARCH)/viam-cli
 
+build: build-web build-go
+
+build-go: cli/modulegen/.__module_gen
+	go build ./...
+
 .PHONY: cli-ci
 cli-ci: bin/$(GOOS)-$(GOARCH)/viam-cli
 	if [ -n "$(CI_RELEASE)" ]; then \

cli/app.go

@@ -1411,6 +1411,17 @@ Copy multiple files from the machine to a local destination with recursion and k
 			Usage:           "manage your modules in Viam's registry",
 			HideHelpCommand: true,
 			Subcommands: []*cli.Command{
+				{
+					Name:  "experimental",
+					Usage: "Experimental module features. These features are under active development and may change at any time; use with caution",
+					Subcommands: []*cli.Command{
+						{
+							Name:   "generate",
+							Usage:  "generate module boilerplate",
+							Action: ModuleBoilerplateGenerationAction,
+						},
+					},
+				},
 				{
 					Name:  "create",
 					Usage: "create & register a module on app.viam.com",

cli/module_boilerplate.go

@@ -0,0 +1,96 @@
+// Package cli contains all business logic needed by the CLI command.
+package cli
+
+import (
+	"bytes"
+	_ "embed"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+
+	"github.com/urfave/cli/v2"
+	goutils "go.viam.com/utils"
+)
+
+//go:embed modulegen/.__module_gen
+var executable []byte
+
+func writeExecutableFile(fileName string) error {
+	if err := os.WriteFile(fileName, executable, 0o600); err != nil {
+		return err
+	}
+	return nil
+}
+
+func removeFile(fileName string) error {
+	return os.Remove(fileName)
+}
+
+// ModuleBoilerplateGenerationAction is the corresponding action for 'module generate'.
+func ModuleBoilerplateGenerationAction(*cli.Context) (err error) {
+	fileName := goutils.RandomAlphaString(8)
+	if err = writeExecutableFile(fileName); err != nil {
+		return err
+	}
+	defer func() {
+		err = removeFile(fileName)
+	}()
+
+	currDir, err := os.Getwd()
+	if err != nil {
+		return err
+	}
+	path := filepath.Join(currDir, fileName)
+
+	//nolint:gosec
+	cmd := exec.Command(path)
+	stdIn, err := cmd.StdinPipe()
+	if err != nil {
+		return err
+	}
+
+	stdOut, err := cmd.StdoutPipe()
+	if err != nil {
+		return err
+	}
+
+	var stderr bytes.Buffer
+	cmd.Stderr = &stderr
+
+	if err = cmd.Start(); err != nil {
+		return fmt.Errorf("%s: %s", err.Error(), stderr.String())
+	}
+
+	for {
+		buf := make([]byte, 512)
+		n, err := stdOut.Read(buf)
+		if errors.Is(err, io.EOF) {
+			break
+		}
+		if err != nil {
+			return err
+		}
+		if _, err = os.Stdout.Write(buf[:n]); err != nil {
+			return err
+		}
+		var input string
+		if _, err = fmt.Scanln(&input); err != nil {
+			return err
+		}
+		input = fmt.Sprintf("%s\n", input)
+		if _, err = stdIn.Write([]byte(input)); err != nil {
+			return err
+		}
+	}
+
+	if err = stdIn.Close(); err != nil {
+		return err
+	}
+	if err = cmd.Wait(); err != nil {
+		return err
+	}
+	return err
+}

cli/modulegen/.__module_gen

@@ -0,0 +1,3 @@
+This is a dummy file to allow `go build` to run without creating a python dependency. It
+will be overwritten by running `make cli` from directory root and should not be interacted
+with directly.

cli/modulegen/install.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+if [[ $OS = "windows" ]]; then
+	curl -sL -o ./cli/modulegen/.__module_gen https://github.com/viamrobotics/module-template-generator/releases/latest/download/windows-main.exe
+elif [[ $OS = "darwin" && $ARCH = "arm64" ]]; then
+	curl -sL -o ./cli/modulegen/.__module_gen https://github.com/viamrobotics/module-template-generator/releases/latest/download/macosx_arm64-main
+elif [[ $OS = "darwin" && $ARCH = "amd64" ]]; then
+	curl -sL -o ./cli/modulegen/.__module_gen https://github.com/viamrobotics/module-template-generator/releases/latest/download/macosx_x86_64-main
+elif [[ $OS = "linux" && $ARCH = "arm64" ]]; then
+	curl -sL -o ./cli/modulegen/.__module_gen https://github.com/viamrobotics/module-template-generator/releases/latest/download/linux_aarch64-main
+elif [[ $OS = "linux" && $ARCH = "amd64" ]]; then
+	curl -sL -o ./cli/modulegen/.__module_gen https://github.com/viamrobotics/module-template-generator/releases/latest/download/linux_x86_64-main
+fi