/
template.go
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/
template.go
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// Copyright (c) 2021 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package main
import (
"fmt"
"strings"
"go.uber.org/thriftrw/plugin"
"go.uber.org/thriftrw/plugin/api"
)
// Svc is a Thrift service.
type Svc struct {
*api.Service
Module *api.Module
// Ordered list of parents of this service. If the list is non-empty, the
// immediate parent of this service is the first item in the list, its
// parent service is next, and so on.
Parents []*Svc
}
// AllFunctions returns a list of all functions for this service including
// inherited functions.
func (s *Svc) AllFunctions() []*api.Function {
var (
functions []*api.Function
added = make(map[string]struct{})
services = append([]*Svc{s}, s.Parents...)
)
for _, s := range services {
for _, f := range s.Functions {
if _, taken := added[f.ThriftName]; taken {
continue
}
functions = append(functions, f)
}
}
return functions
}
// Parent returns the immediate parent of this service or nil if it doesn't
// have any.
func (s *Svc) Parent() *api.Service {
if len(s.Parents) > 0 {
return s.Parents[0].Service
}
return nil
}
// ServerPackagePath returns the import path to the server package for this
// service.
func (s *Svc) ServerPackagePath() string {
return fmt.Sprintf("%s/%sserver", s.Module.ImportPath, strings.ToLower(s.Name))
}
// ClientPackagePath returns the import path to the server package for this
// service.
func (s *Svc) ClientPackagePath() string {
return fmt.Sprintf("%s/%sclient", s.Module.ImportPath, strings.ToLower(s.Name))
}
// TestPackagePath returns the import path to the testpackage for this
// service.
func (s *Svc) TestPackagePath() string {
return fmt.Sprintf("%s/%stest", s.Module.ImportPath, strings.ToLower(s.Name))
}
// FxPackagePath returns the import path to the Fx package for this service.
func (s *Svc) FxPackagePath() string {
return fmt.Sprintf("%s/%sfx", s.Module.ImportPath, strings.ToLower(s.Name))
}
// serviceTemplateData contains the data for code gen templates that operate on
// a Thrift service.
type serviceTemplateData struct {
*Svc
ContextImportPath string
UnaryWrapperImport string
UnaryWrapperFunc string
OnewayWrapperImport string
OnewayWrapperFunc string
SanitizeTChannel bool
}
// moduleTemplateData contains the data for code gen templates. This should be
// used by templates that operate on types
//
// use serviceTemplateData for generators that rely on service definitions
type moduleTemplateData struct {
Module *api.Module
ContextImportPath string
}
// ParentServerPackagePath returns the import path for the immediate parent
// service's YARPC server package or an empty string if this service doesn't
// extend another service.
func (d *serviceTemplateData) ParentServerPackagePath() string {
if len(d.Parents) == 0 {
return ""
}
return d.Parents[0].ServerPackagePath()
}
// ParentClientPackagePath returns the import path for the immediate parent
// service's YARPC client package or an empty string if this service doesn't
// extend another service.
func (d *serviceTemplateData) ParentClientPackagePath() string {
if len(d.Parents) == 0 {
return ""
}
return d.Parents[0].ClientPackagePath()
}
// moduleGenFunc is a function that generates some part of the code needed by the
// plugin.
type moduleGenFunc func(*moduleTemplateData, map[string][]byte) error
// serviceGenFunc is a function that generates some part of the code needed by the
// plugin.
type serviceGenFunc func(*serviceTemplateData, map[string][]byte) error
// Default options for the template
var templateOptions = []plugin.TemplateOption{
plugin.TemplateFunc("lower", strings.ToLower),
}