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main.go
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main.go
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// 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")
_sanitizeTChannel = flag.Bool("sanitize-tchannel", false, "Enable tchannel context sanitization")
)
type g struct {
SanitizeTChannel bool
}
func (g 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,
SanitizeTChannel: g.SanitizeTChannel,
}
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{
SanitizeTChannel: *_sanitizeTChannel,
}})
}