@@ -45,7 +45,8 @@ var (
 		"Function used to wrap generic Thrift oneway function handlers into YARPC handlers")
 	_noGomock = flag.Bool("no-gomock", false,
 		"Don't generate gomock mocks for service clients")
-	_noFx = flag.Bool("no-fx", false, "Don't generate Fx module")
+	_noFx                 = flag.Bool("no-fx", false, "Don't generate Fx module")
+	_tchannelSanitization = flag.Bool("tchannel-sanitization", false, "Enable tchannel context sanitization")
 )
 
 type g struct{}
// Copyright (c) 2017 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.

// thriftrw-plugin-yarpc implements a plugin for ThriftRW that generates code
// compatible with YARPC.
//
// For more information, check the documentation of the parent package.
package main

import (
	"flag"
	"strings"

	"go.uber.org/thriftrw/plugin"
	"go.uber.org/thriftrw/plugin/api"
)

// Command line flags
var (
	_context = flag.String("context-import-path",
		"context",
		"Import path at which Context is available")
	_unaryHandlerWrapper = flag.String("unary-handler-wrapper",
		"go.uber.org/yarpc/encoding/thrift.UnaryHandler",
		"Function used to wrap generic Thrift unary function handlers into YARPC handlers")
	_onewayHandlerWrapper = flag.String("oneway-handler-wrapper",
		"go.uber.org/yarpc/encoding/thrift.OnewayHandler",
		"Function used to wrap generic Thrift oneway function handlers into YARPC handlers")
	_noGomock = flag.Bool("no-gomock", false,
		"Don't generate gomock mocks for service clients")
	_noFx = flag.Bool("no-fx", false, "Don't generate Fx module")
)

type g struct{}

func (g) Generate(req *api.GenerateServiceRequest) (*api.GenerateServiceResponse, error) {
	generators := []genFunc{clientGenerator, serverGenerator}
	if !*_noFx {
		generators = append(generators, fxGenerator)
	}
	if !*_noGomock {
		generators = append(generators, gomockGenerator)
	}

	unaryWrapperImport, unaryWrapperFunc := splitFunctionPath(*_unaryHandlerWrapper)
	onewayWrapperImport, onewayWrapperFunc := splitFunctionPath(*_onewayHandlerWrapper)

	files := make(map[string][]byte)
	for _, serviceID := range req.RootServices {
		svc := buildSvc(serviceID, req)
		data := templateData{
			Svc:                 svc,
			ContextImportPath:   *_context,
			UnaryWrapperImport:  unaryWrapperImport,
			UnaryWrapperFunc:    unaryWrapperFunc,
			OnewayWrapperImport: onewayWrapperImport,
			OnewayWrapperFunc:   onewayWrapperFunc,
		}

		for _, gen := range generators {
			if err := gen(&data, files); err != nil {
				return nil, err
			}
		}
	}
	return &api.GenerateServiceResponse{Files: files}, nil
}

func splitFunctionPath(input string) (string, string) {
	i := strings.LastIndex(input, ".")
	return input[:i], input[i+1:]
}

func buildSvc(serviceID api.ServiceID, req *api.GenerateServiceRequest) *Svc {
	service := req.Services[serviceID]
	module := req.Modules[service.ModuleID]

	var parents []*Svc
	if service.ParentID != nil {
		parentSvc := buildSvc(*service.ParentID, req)
		parents = append(parents, parentSvc)
		parents = append(parents, parentSvc.Parents...)
	}

	return &Svc{
		Service: service,
		Module:  module,
		Parents: parents,
	}
}

func main() {
	flag.Parse()
	plugin.Main(&plugin.Plugin{Name: "yarpc", ServiceGenerator: g{}})
}

I might name this `sanitize-tchannel` instead, I get why you named it this but it just reads more nicely