Golang codegen.SourceFileFor函数代码示例

func (g *Generator) createMainFile(mainFile string, funcs template.FuncMap) error {
	g.genfiles = append(g.genfiles, mainFile)
	file, err := codegen.SourceFileFor(mainFile)
	if err != nil {
		return err
	}
	funcs["getPort"] = func(hostport string) string {
		_, port, err := net.SplitHostPort(hostport)
		if err != nil {
			return "8080"
		}
		return port
	}
	outPkg, err := codegen.PackagePath(g.OutDir)
	if err != nil {
		return err
	}
	appPkg := path.Join(outPkg, "app")
	imports := []*codegen.ImportSpec{
		codegen.SimpleImport("time"),
		codegen.SimpleImport("github.com/goadesign/goa"),
		codegen.SimpleImport("github.com/goadesign/goa/middleware"),
		codegen.SimpleImport(appPkg),
	}
	file.Write([]byte("//go:generate goagen bootstrap -d " + g.DesignPkg + "\n\n"))
	file.WriteHeader("", "main", imports)
	data := map[string]interface{}{
		"Name": g.API.Name,
		"API":  g.API,
	}
	if err = file.ExecuteTemplate("main", mainT, funcs, data); err != nil {
		return err
	}
	return file.FormatCode()
}

func (g *Generator) generateClientResources(clientPkg string, funcs template.FuncMap, api *design.APIDefinition) error {
	clientsTmpl := template.Must(template.New("clients").Funcs(funcs).Parse(clientsTmpl))
	imports := []*codegen.ImportSpec{
		codegen.SimpleImport("bytes"),
		codegen.SimpleImport("encoding/json"),
		codegen.SimpleImport("fmt"),
		codegen.SimpleImport("io"),
		codegen.SimpleImport("net/http"),
		codegen.SimpleImport("net/url"),
		codegen.SimpleImport("strconv"),
		codegen.SimpleImport("strings"),
	}

	return api.IterateResources(func(res *design.ResourceDefinition) error {
		filename := filepath.Join(codegen.OutputDir, snakeCase(res.Name)+".go")
		file, err := codegen.SourceFileFor(filename)
		if err != nil {
			return err
		}
		if err := file.WriteHeader("", "client", imports); err != nil {
			return err
		}
		g.genfiles = append(g.genfiles, filename)

		if err := res.IterateActions(func(action *design.ActionDefinition) error {
			return clientsTmpl.Execute(file, action)
		}); err != nil {
			return err
		}

		return file.FormatCode()
	})
}

// NewMediaTypesWriter returns a contexts code writer.
// Media types contain the data used to render response bodies.
func NewMediaTypesWriter(filename string) (*MediaTypesWriter, error) {
	file, err := codegen.SourceFileFor(filename)
	if err != nil {
		return nil, err
	}
	return &MediaTypesWriter{SourceFile: file, Validator: codegen.NewValidator()}, nil
}

// NewControllersWriter returns a handlers code writer.
// Handlers provide the glue between the underlying request data and the user controller.
func NewControllersWriter(filename string) (*ControllersWriter, error) {
	file, err := codegen.SourceFileFor(filename)
	if err != nil {
		return nil, err
	}
	return &ControllersWriter{SourceFile: file}, nil
}

// NewSecurityWriter returns a security functionality code writer.
// Those functionalities are there to support action-middleware related to security.
func NewSecurityWriter(filename string) (*SecurityWriter, error) {
	file, err := codegen.SourceFileFor(filename)
	if err != nil {
		return nil, err
	}
	return &SecurityWriter{SourceFile: file}, nil
}

// NewUserHelperWriter returns a contexts code writer.
// User types contain custom data structured defined in the DSL with "Type".
func NewUserHelperWriter(filename string) (*UserHelperWriter, error) {
	file, err := codegen.SourceFileFor(filename)
	if err != nil {
		return nil, err
	}
	return &UserHelperWriter{SourceFile: file}, nil
}

// NewResourcesWriter returns a contexts code writer.
// Resources provide the glue between the underlying request data and the user controller.
func NewResourcesWriter(filename string) (*ResourcesWriter, error) {
	file, err := codegen.SourceFileFor(filename)
	if err != nil {
		return nil, err
	}
	return &ResourcesWriter{SourceFile: file}, nil
}

func (g *Generator) generateJS(jsFile string, api *design.APIDefinition) (_ *design.ActionDefinition, err error) {
	file, err := codegen.SourceFileFor(jsFile)
	if err != nil {
		return
	}
	g.genfiles = append(g.genfiles, jsFile)

	if Scheme == "" && len(api.Schemes) > 0 {
		Scheme = api.Schemes[0]
	}
	data := map[string]interface{}{
		"API":     api,
		"Host":    Host,
		"Scheme":  Scheme,
		"Timeout": int64(Timeout / time.Millisecond),
	}
	if err = file.ExecuteTemplate("module", moduleT, nil, data); err != nil {
		return
	}

	actions := make(map[string][]*design.ActionDefinition)
	api.IterateResources(func(res *design.ResourceDefinition) error {
		return res.IterateActions(func(action *design.ActionDefinition) error {
			if as, ok := actions[action.Name]; ok {
				actions[action.Name] = append(as, action)
			} else {
				actions[action.Name] = []*design.ActionDefinition{action}
			}
			return nil
		})
	})

	var exampleAction *design.ActionDefinition
	keys := []string{}
	for n := range actions {
		keys = append(keys, n)
	}
	sort.Strings(keys)
	for _, n := range keys {
		for _, a := range actions[n] {
			if exampleAction == nil && a.Routes[0].Verb == "GET" {
				exampleAction = a
			}
			data := map[string]interface{}{
				"Action":  a,
				"Version": design.Design.APIVersionDefinition,
			}
			funcs := template.FuncMap{"params": params}
			if err = file.ExecuteTemplate("jsFuncs", jsFuncsT, funcs, data); err != nil {
				return
			}
		}
	}

	_, err = file.Write([]byte(moduleTend))
	return exampleAction, err
}

func (g *Generator) generateIndexHTML(htmlFile string, api *design.APIDefinition, exampleAction *design.ActionDefinition) error {
	file, err := codegen.SourceFileFor(htmlFile)
	if err != nil {
		return err
	}
	g.genfiles = append(g.genfiles, htmlFile)

	argNames := params(exampleAction)
	var args string
	if len(argNames) > 0 {
		query := exampleAction.QueryParams.Type.ToObject()
		argValues := make([]string, len(argNames))
		for i, n := range argNames {
			q := query[n].Type.ToArray().ElemType
			// below works because we deal with simple types in query strings
			if q.Example != nil {
				argValues[i] = fmt.Sprintf("%v", q.Example)
			} else {
				argValues[i] = fmt.Sprintf("%v", q.GenerateExample(api.RandomGenerator()))
			}
		}
		args = strings.Join(argValues, ", ")
	}
	examplePath := exampleAction.Routes[0].FullPath(design.Design.APIVersionDefinition)
	pathParams := exampleAction.Routes[0].Params(design.Design.APIVersionDefinition)
	if len(pathParams) > 0 {
		pathVars := exampleAction.AllParams().Type.ToObject()
		pathValues := make([]interface{}, len(pathParams))
		for i, n := range pathParams {
			if pathVars[n].Example != nil {
				pathValues[i] = fmt.Sprintf("%v", pathVars[n].Example)
			} else {
				pathValues[i] = pathVars[n].GenerateExample(api.RandomGenerator())
			}
		}
		format := design.WildcardRegex.ReplaceAllLiteralString(examplePath, "/%v")
		examplePath = fmt.Sprintf(format, pathValues...)
	}
	if len(argNames) > 0 {
		args = ", " + args
	}
	exampleFunc := fmt.Sprintf(
		`%s%s ("%s"%s)`,
		exampleAction.Name,
		strings.Title(exampleAction.Parent.Name),
		examplePath,
		args,
	)
	data := map[string]interface{}{
		"API":         api,
		"ExampleFunc": exampleFunc,
	}

	return file.ExecuteTemplate("exampleHTML", exampleT, nil, data)
}

// Generate produces the skeleton main.
func (g *Generator) Generate(api *design.APIDefinition) (_ []string, err error) {
	var genfiles []string

	cleanup := func() {
		for _, f := range genfiles {
			os.Remove(f)
		}
	}

	go utils.Catch(nil, cleanup)

	defer func() {
		if err != nil {
			cleanup()
		}
	}()

	s, err := New(api)
	if err != nil {
		return
	}
	b, err := json.Marshal(s)
	if err != nil {
		return
	}
	swaggerDir := filepath.Join(codegen.OutputDir, "swagger")
	os.RemoveAll(swaggerDir)
	if err = os.MkdirAll(swaggerDir, 0755); err != nil {
		return
	}
	genfiles = append(genfiles, swaggerDir)
	swaggerFile := filepath.Join(swaggerDir, "swagger.json")
	err = ioutil.WriteFile(swaggerFile, b, 0644)
	if err != nil {
		return
	}
	genfiles = append(genfiles, swaggerFile)
	controllerFile := filepath.Join(swaggerDir, "swagger.go")
	genfiles = append(genfiles, controllerFile)
	file, err := codegen.SourceFileFor(controllerFile)
	if err != nil {
		return
	}
	imports := []*codegen.ImportSpec{
		codegen.SimpleImport("github.com/goadesign/goa"),
	}
	file.WriteHeader(fmt.Sprintf("%s Swagger Spec", api.Name), "swagger", imports)
	file.Write([]byte(swagger))
	if err = file.FormatCode(); err != nil {
		return
	}

	return genfiles, nil
}

// NewUserTypesWriter returns a contexts code writer.
// User types contain custom data structured defined in the DSL with "Type".
func NewUserTypesWriter(filename string) (*UserTypesWriter, error) {
	file, err := codegen.SourceFileFor(filename)
	if err != nil {
		return nil, err
	}
	return &UserTypesWriter{
		SourceFile: file,
		Finalizer:  codegen.NewFinalizer(),
		Validator:  codegen.NewValidator(),
	}, nil
}

func (g *Generator) generateMain(mainFile string, clientPkg string, funcs template.FuncMap, api *design.APIDefinition) error {
	imports := []*codegen.ImportSpec{
		codegen.SimpleImport("encoding/json"),
		codegen.SimpleImport("fmt"),
		codegen.SimpleImport("io/ioutil"),
		codegen.SimpleImport("net/http"),
		codegen.SimpleImport("os"),
		codegen.SimpleImport("time"),
		codegen.SimpleImport(clientPkg),
		codegen.SimpleImport("github.com/spf13/cobra"),
	}
	for _, pkg := range SignerPackages {
		imports = append(imports, codegen.SimpleImport(pkg))
	}
	file, err := codegen.SourceFileFor(mainFile)
	if err != nil {
		return err
	}
	if err := file.WriteHeader("", "main", imports); err != nil {
		return err
	}
	g.genfiles = append(g.genfiles, mainFile)

	data := map[string]interface{}{
		"API":     api,
		"Signers": Signers,
		"Version": Version,
	}
	if err := file.ExecuteTemplate("main", mainTmpl, nil, data); err != nil {
		return err
	}

	actions := make(map[string][]*design.ActionDefinition)
	api.IterateResources(func(res *design.ResourceDefinition) error {
		return res.IterateActions(func(action *design.ActionDefinition) error {
			if as, ok := actions[action.Name]; ok {
				actions[action.Name] = append(as, action)
			} else {
				actions[action.Name] = []*design.ActionDefinition{action}
			}
			return nil
		})
	})
	if err := file.ExecuteTemplate("registerCmds", registerCmdsT, nil, actions); err != nil {
		return err
	}

	return file.FormatCode()
}

func (g *Generator) generateIndexHTML(htmlFile string, exampleAction *design.ActionDefinition) error {
	file, err := codegen.SourceFileFor(htmlFile)
	if err != nil {
		return err
	}
	g.genfiles = append(g.genfiles, htmlFile)

	argNames := params(exampleAction)
	var args string
	if len(argNames) > 0 {
		query := exampleAction.QueryParams.Type.ToObject()
		argValues := make([]string, len(argNames))
		for i, n := range argNames {
			ex := query[n].GenerateExample(g.API.RandomGenerator(), nil)
			argValues[i] = fmt.Sprintf("%v", ex)
		}
		args = strings.Join(argValues, ", ")
	}
	examplePath := exampleAction.Routes[0].FullPath()
	pathParams := exampleAction.Routes[0].Params()
	if len(pathParams) > 0 {
		pathVars := exampleAction.AllParams().Type.ToObject()
		pathValues := make([]interface{}, len(pathParams))
		for i, n := range pathParams {
			ex := pathVars[n].GenerateExample(g.API.RandomGenerator(), nil)
			pathValues[i] = ex
		}
		format := design.WildcardRegex.ReplaceAllLiteralString(examplePath, "/%v")
		examplePath = fmt.Sprintf(format, pathValues...)
	}
	if len(argNames) > 0 {
		args = ", " + args
	}
	exampleFunc := fmt.Sprintf(
		`%s%s ("%s"%s)`,
		exampleAction.Name,
		strings.Title(exampleAction.Parent.Name),
		examplePath,
		args,
	)
	data := map[string]interface{}{
		"API":         g.API,
		"ExampleFunc": exampleFunc,
	}

	return file.ExecuteTemplate("exampleHTML", exampleT, nil, data)
}

func (g *Generator) generateCommands(commandsFile string, clientPkg string, funcs template.FuncMap, api *design.APIDefinition) error {
	file, err := codegen.SourceFileFor(commandsFile)
	if err != nil {
		return err
	}
	commandTypesTmpl := template.Must(template.New("commandTypes").Funcs(funcs).Parse(commandTypesTmpl))
	commandsTmpl := template.Must(template.New("commands").Funcs(funcs).Parse(commandsTmpl))

	imports := []*codegen.ImportSpec{
		codegen.SimpleImport("encoding/json"),
		codegen.SimpleImport("fmt"),
		codegen.SimpleImport(clientPkg),
		codegen.SimpleImport("github.com/goadesign/goa"),
		codegen.SimpleImport("github.com/spf13/cobra"),
		codegen.NewImport("log", "gopkg.in/inconshreveable/log15.v2"),
	}
	if err := file.WriteHeader("", "main", imports); err != nil {
		return err
	}
	g.genfiles = append(g.genfiles, commandsFile)

	file.Write([]byte("type (\n"))
	if err := api.IterateResources(func(res *design.ResourceDefinition) error {
		return res.IterateActions(func(action *design.ActionDefinition) error {
			return commandTypesTmpl.Execute(file, action)
		})
	}); err != nil {
		return err
	}
	file.Write([]byte(")\n\n"))

	if err := api.IterateResources(func(res *design.ResourceDefinition) error {
		return res.IterateActions(func(action *design.ActionDefinition) error {
			data := map[string]interface{}{
				"Action":   action,
				"Resource": action.Parent,
				"Version":  design.Design.APIVersionDefinition,
			}
			return commandsTmpl.Execute(file, data)
		})
	}); err != nil {
		return err
	}

	return file.FormatCode()
}

// Generate produces the skeleton main.
func (g *Generator) Generate(api *design.APIDefinition) (_ []string, err error) {
	go utils.Catch(nil, func() { g.Cleanup() })

	defer func() {
		if err != nil {
			g.Cleanup()
		}
	}()

	os.RemoveAll(JSONSchemaDir())
	os.MkdirAll(JSONSchemaDir(), 0755)
	g.genfiles = append(g.genfiles, JSONSchemaDir())
	s := APISchema(api)
	js, err := s.JSON()
	if err != nil {
		return
	}

	schemaFile := filepath.Join(JSONSchemaDir(), "schema.json")
	if err = ioutil.WriteFile(schemaFile, js, 0644); err != nil {
		return
	}
	g.genfiles = append(g.genfiles, schemaFile)

	controllerFile := filepath.Join(JSONSchemaDir(), "schema.go")
	file, err := codegen.SourceFileFor(controllerFile)
	if err != nil {
		return
	}
	imports := []*codegen.ImportSpec{
		codegen.SimpleImport("github.com/julienschmidt/httprouter"),
		codegen.SimpleImport("github.com/goadesign/goa"),
	}
	g.genfiles = append(g.genfiles, controllerFile)
	file.WriteHeader(fmt.Sprintf("%s JSON Hyper-schema", api.Name), "schema", imports)
	file.Write([]byte(jsonSchemaCtrl))
	if err = file.FormatCode(); err != nil {
		return
	}

	return g.genfiles, nil
}