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155 lines
4.7 KiB
Go
155 lines
4.7 KiB
Go
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// Go support for Protocol Buffers - Google's data interchange format
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//
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// Copyright 2016 The Go Authors. All rights reserved.
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// https://github.com/golang/protobuf
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// conformance implements the conformance test subprocess protocol as
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// documented in conformance.proto.
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package main
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import (
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"encoding/binary"
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"fmt"
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"io"
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"os"
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pb "github.com/golang/protobuf/conformance/internal/conformance_proto"
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"github.com/golang/protobuf/jsonpb"
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"github.com/golang/protobuf/proto"
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)
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func main() {
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var sizeBuf [4]byte
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inbuf := make([]byte, 0, 4096)
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outbuf := proto.NewBuffer(nil)
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for {
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if _, err := io.ReadFull(os.Stdin, sizeBuf[:]); err == io.EOF {
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break
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} else if err != nil {
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fmt.Fprintln(os.Stderr, "go conformance: read request:", err)
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os.Exit(1)
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}
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size := binary.LittleEndian.Uint32(sizeBuf[:])
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if int(size) > cap(inbuf) {
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inbuf = make([]byte, size)
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}
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inbuf = inbuf[:size]
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if _, err := io.ReadFull(os.Stdin, inbuf); err != nil {
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fmt.Fprintln(os.Stderr, "go conformance: read request:", err)
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os.Exit(1)
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}
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req := new(pb.ConformanceRequest)
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if err := proto.Unmarshal(inbuf, req); err != nil {
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fmt.Fprintln(os.Stderr, "go conformance: parse request:", err)
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os.Exit(1)
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}
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res := handle(req)
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if err := outbuf.Marshal(res); err != nil {
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fmt.Fprintln(os.Stderr, "go conformance: marshal response:", err)
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os.Exit(1)
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}
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binary.LittleEndian.PutUint32(sizeBuf[:], uint32(len(outbuf.Bytes())))
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if _, err := os.Stdout.Write(sizeBuf[:]); err != nil {
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fmt.Fprintln(os.Stderr, "go conformance: write response:", err)
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os.Exit(1)
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}
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if _, err := os.Stdout.Write(outbuf.Bytes()); err != nil {
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fmt.Fprintln(os.Stderr, "go conformance: write response:", err)
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os.Exit(1)
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}
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outbuf.Reset()
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}
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}
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var jsonMarshaler = jsonpb.Marshaler{
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OrigName: true,
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}
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func handle(req *pb.ConformanceRequest) *pb.ConformanceResponse {
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var err error
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var msg pb.TestAllTypes
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switch p := req.Payload.(type) {
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case *pb.ConformanceRequest_ProtobufPayload:
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err = proto.Unmarshal(p.ProtobufPayload, &msg)
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case *pb.ConformanceRequest_JsonPayload:
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err = jsonpb.UnmarshalString(p.JsonPayload, &msg)
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default:
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return &pb.ConformanceResponse{
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Result: &pb.ConformanceResponse_RuntimeError{
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RuntimeError: "unknown request payload type",
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},
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}
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}
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if err != nil {
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return &pb.ConformanceResponse{
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Result: &pb.ConformanceResponse_ParseError{
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ParseError: err.Error(),
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},
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}
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}
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switch req.RequestedOutputFormat {
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case pb.WireFormat_PROTOBUF:
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p, err := proto.Marshal(&msg)
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if err != nil {
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return &pb.ConformanceResponse{
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Result: &pb.ConformanceResponse_SerializeError{
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SerializeError: err.Error(),
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},
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}
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}
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return &pb.ConformanceResponse{
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Result: &pb.ConformanceResponse_ProtobufPayload{
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ProtobufPayload: p,
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},
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}
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case pb.WireFormat_JSON:
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p, err := jsonMarshaler.MarshalToString(&msg)
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if err != nil {
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return &pb.ConformanceResponse{
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Result: &pb.ConformanceResponse_SerializeError{
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SerializeError: err.Error(),
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},
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}
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}
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return &pb.ConformanceResponse{
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Result: &pb.ConformanceResponse_JsonPayload{
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JsonPayload: p,
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},
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}
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default:
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return &pb.ConformanceResponse{
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Result: &pb.ConformanceResponse_RuntimeError{
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RuntimeError: "unknown output format",
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},
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}
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}
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}
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