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package generator
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import (
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"bytes"
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"errors"
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"path/filepath"
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"strings"
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"github.com/tal-tech/go-zero/core/collection"
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conf "github.com/tal-tech/go-zero/tools/goctl/config"
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"github.com/tal-tech/go-zero/tools/goctl/rpc/execx"
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"github.com/tal-tech/go-zero/tools/goctl/rpc/parser"
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)
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const googleProtocGenGoErr = `--go_out: protoc-gen-go: plugins are not supported; use 'protoc --go-grpc_out=...' to generate gRPC`
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// GenPb generates the pb.go file, which is a layer of packaging for protoc to generate gprc,
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// but the commands and flags in protoc are not completely joined in goctl. At present, proto_path(-I) is introduced
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func (g *DefaultGenerator) GenPb(ctx DirContext, protoImportPath []string, proto parser.Proto, _ *conf.Config, goOptions ...string) error {
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dir := ctx.GetPb()
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cw := new(bytes.Buffer)
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directory, base := filepath.Split(proto.Src)
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directory = filepath.Clean(directory)
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cw.WriteString("protoc ")
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protoImportPathSet := collection.NewSet()
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for _, ip := range protoImportPath {
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pip := " --proto_path=" + ip
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if protoImportPathSet.Contains(pip) {
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continue
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}
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protoImportPathSet.AddStr(pip)
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cw.WriteString(pip)
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}
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currentPath := " --proto_path=" + directory
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if !protoImportPathSet.Contains(currentPath) {
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cw.WriteString(currentPath)
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}
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cw.WriteString(" " + proto.Name)
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if strings.Contains(proto.GoPackage, "/") {
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cw.WriteString(" --go_out=plugins=grpc:" + ctx.GetMain().Filename)
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} else {
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cw.WriteString(" --go_out=plugins=grpc:" + dir.Filename)
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}
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// Compatible with version 1.4.0，github.com/golang/protobuf/protoc-gen-go@v1.4.0
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// --go_opt usage please see https://developers.google.com/protocol-buffers/docs/reference/go-generated#package
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optSet := collection.NewSet()
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for _, op := range goOptions {
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opt := " --go_opt=" + op
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if optSet.Contains(opt) {
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continue
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}
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optSet.AddStr(op)
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cw.WriteString(" --go_opt=" + op)
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}
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var currentFileOpt string
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if filepath.IsAbs(proto.GoPackage) {
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currentFileOpt = " --go_opt=M" + base + "=" + proto.GoPackage
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} else if strings.Contains(proto.GoPackage, string(filepath.Separator)) {
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currentFileOpt = " --go_opt=M" + base + "=./" + proto.GoPackage
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} else {
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currentFileOpt = " --go_opt=M" + base + "=../" + proto.GoPackage
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}
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if !optSet.Contains(currentFileOpt) {
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cw.WriteString(currentFileOpt)
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}
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command := cw.String()
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g.log.Debug(command)
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_, err := execx.Run(command, "")
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if err != nil {
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if strings.Contains(err.Error(), googleProtocGenGoErr) {
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return errors.New(`Unsupported plugin protoc-gen-go which installed from the following source:
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google.golang.org/protobuf/cmd/protoc-gen-go,
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github.com/protocolbuffers/protobuf-go/cmd/protoc-gen-go;
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Please replace it by the following command, we recommend to use version before v1.3.5:
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go get -u github.com/golang/protobuf/protoc-gen-go`)
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}
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return err
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}
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return nil
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}
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