/
main.go
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/
main.go
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// Copyright (c) 2020 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 provides a protoc plugin that generates code for the protobuf encoding for YARPC.
To use:
go get github.com/gogo/protobuf/protoc-gen-gogoslick
go get go.uber.org/yarpc/encoding/protobuf/protoc-gen-yarpc-go
protoc --gogoslick_out=. foo.proto
protoc --yarpc-go_out=. foo.proto
*/
package main
// Note there is some crazy bug with protobuf that if you declare:
//
// func bar() (kv.GetValueResponse, error) {
// return nil, errors.New("nil response and non-nil error")
// }
//
// func foo() (proto.Message, error) {
// return bar()
// }
//
// response, err := foo()
// fmt.Printf("%v %v\n", response, response == nil)
//
// This will print "<nil>, false". If you try to do something with response (ie call a function on it),
// if will panic because response is nil. Something similar happens in golang/protobuf
// too, so this is insane. If in bar(), you do response == nil, it will be true.
// The generated code handles this.
import (
"log"
"os"
"go.uber.org/yarpc/encoding/protobuf/protoc-gen-yarpc-go/internal/lib"
"go.uber.org/yarpc/internal/protoplugin"
)
func main() {
if err := protoplugin.Do(lib.Runner, os.Stdin, os.Stdout); err != nil {
log.Fatal(err)
}
}