[MM-53156] Remove Multi-Product architecture (#25669)

server/public/plugin/interface_generator/main.go

@@ -40,13 +40,6 @@ var excludedPluginHooks = []string{
 	"ServeMetrics",
 }
 
-var excludedProductHooks = []string{
-	"Implemented",
-	"OnActivate",
-	"OnDeactivate",
-	"ServeHTTP",
-}
-
 type IHookEntry struct {
 	FuncName string
 	Args     *ast.FieldList
@@ -385,62 +378,6 @@ func (s *apiRPCServer) {{.Name}}(args *{{.Name | obscure}}Args, returns *{{.Name
 {{end}}
 `
 
-var productHooksTemplate = `// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
-// See LICENSE.txt for license information.
-
-// Code generated by "make pluginapi"
-// DO NOT EDIT
-
-package plugin
-
-{{range .HooksMethods}}
-type {{.Name}}IFace interface {
-	{{.Name}}{{funcStyle .Params}} {{funcStyle .Return}}
-}
-
-{{end}}
-
-type HooksAdapter struct {
-	implemented  map[int]struct{}
-	productHooks any
-}
-
-func NewAdapter(productHooks any) (*HooksAdapter, error) {
-	a := &HooksAdapter{
-		implemented:  make(map[int]struct{}),
-		productHooks: productHooks,
-	}
-	var tt reflect.Type
-	ft := reflect.TypeOf(productHooks)
-	{{range .HooksMethods}}
-	// Assessing the type of the productHooks if it individually implements {{.Name}} interface.
-	tt = reflect.TypeOf((*{{.Name}}IFace)(nil)).Elem()
-
-    if ft.Implements(tt) {
-		a.implemented[{{.Name}}ID] = struct{}{}
-	} else if _, ok := ft.MethodByName("{{.Name}}"); ok{
-		return nil, errors.New("hook has {{.Name}} method but does not implement plugin.{{.Name}} interface")
-	}
-
-	{{end}}
-
-	return a, nil
-}
-
-{{range .HooksMethods}}
-func (a *HooksAdapter) {{.Name}}{{funcStyle .Params}} {{funcStyle .Return}} {
-	if _, ok := a.implemented[{{.Name}}ID]; !ok {
-		panic("product hooks must implement {{.Name}}")
-	}
-
-	{{if .Return}}return a.productHooks.({{.Name}}IFace).{{.Name}}({{valuesOnly .Params}}){{else}}a.productHooks.({{.Name}}IFace).{{.Name}}({{valuesOnly .Params}}){{end}}
-
-}
-
-{{end}}
-
-`
-
 var apiTimerLayerTemplate = `// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
 // See LICENSE.txt for license information.
 
@@ -586,39 +523,6 @@ func generateHooksGlue(info *PluginInterfaceInfo) {
 	}
 }
 
-func generateProductHooksInterfaces(info *PluginInterfaceInfo) {
-	templateFunctions := map[string]any{
-		"funcStyle":  func(fields *ast.FieldList) string { return FieldListToFuncList(fields, info.FileSet) },
-		"valuesOnly": func(fields *ast.FieldList) string { return FieldListToNames(fields, false) },
-	}
-
-	templateParams := HooksTemplateParams{}
-	for _, hook := range info.Hooks {
-		templateParams.HooksMethods = append(templateParams.HooksMethods, MethodParams{
-			Name:   hook.FuncName,
-			Params: hook.Args,
-			Return: hook.Results,
-		})
-	}
-
-	productHooksTemplate, err := template.New("hooks").Funcs(templateFunctions).Parse(productHooksTemplate)
-	if err != nil {
-		panic(err)
-	}
-
-	templateResult := &bytes.Buffer{}
-	productHooksTemplate.Execute(templateResult, &templateParams)
-
-	formatted, err := imports.Process("", templateResult.Bytes(), nil)
-	if err != nil {
-		panic(err)
-	}
-
-	if err := os.WriteFile(filepath.Join(getPluginPackageDir(), "product_hooks_generated.go"), formatted, 0664); err != nil {
-		panic(err)
-	}
-}
-
 func generatePluginTimerLayer(info *PluginInterfaceInfo) {
 	templateFunctions := map[string]any{
 		"funcStyle":   func(fields *ast.FieldList) string { return FieldListToFuncList(fields, info.FileSet) },
@@ -723,8 +627,6 @@ func main() {
 	if err != nil {
 		fmt.Println("Unable to get plugin info: " + err.Error())
 	}
-	log.Println("Generating product hooks interfaces")
-	generateProductHooksInterfaces(removeExcluded(forRPC, excludedProductHooks))
 
 	log.Println("Generating plugin hooks glue")
 	generateHooksGlue(removeExcluded(forRPC, excludedPluginHooks))