138 lines
3.4 KiB
Go
138 lines
3.4 KiB
Go
package main
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import (
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"strings"
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openapi_options "github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-openapiv2/options"
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"google.golang.org/protobuf/compiler/protogen"
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"google.golang.org/protobuf/proto"
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)
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type Error struct {
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packageName string
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types []string
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}
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func (g *Generator) httpGenerate(component string, plugin *protogen.Plugin) error {
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errors := make(map[string]struct{})
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for _, file := range plugin.Files {
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if !file.Generate {
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continue
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}
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if len(file.Services) == 0 {
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continue
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}
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gname := file.GeneratedFilenamePrefix + "_micro_" + component + ".pb.go"
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gfile := plugin.NewGeneratedFile(gname, ".")
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gfile.P("// Code generated by protoc-gen-micro")
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gfile.P("// source: ", *file.Proto.Name)
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gfile.P("package ", file.GoPackageName)
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gfile.P()
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gfile.P("import (")
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gfile.P(`"context"`)
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gfile.P()
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gfile.P(`micro_api "github.com/unistack-org/micro/v3/api"`)
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gfile.P(`micro_client_http "github.com/unistack-org/micro-client-http/v3"`)
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gfile.P(`micro_client "github.com/unistack-org/micro/v3/client"`)
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gfile.P(`micro_server "github.com/unistack-org/micro/v3/server"`)
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gfile.P(")")
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gfile.P()
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gfile.P("// Reference imports to suppress errors if they are not otherwise used.")
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gfile.P("var (")
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gfile.P("_ ", "micro_api.Endpoint")
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gfile.P("_ ", "context.Context")
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gfile.P(" _ ", "micro_client.Option")
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gfile.P(" _ ", "micro_server.Option")
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gfile.P(")")
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gfile.P()
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for _, service := range file.Services {
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generateServiceClient(gfile, service)
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generateServiceClientMethods(gfile, service, true)
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generateServiceServer(gfile, service)
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generateServiceServerMethods(gfile, service)
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generateServiceRegister(gfile, service)
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if component == "http" {
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for k, v := range getErrors(service) {
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errors[k] = v
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}
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}
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}
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}
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files := make(map[string]*Error)
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for _, file := range plugin.Files {
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if !file.Generate {
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continue
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}
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err, ok := files[file.GeneratedFilenamePrefix]
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if !ok {
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err = &Error{packageName: string(file.GoPackageName)}
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}
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fok := false
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for _, message := range file.Messages {
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if _, ok := errors["."+string(message.Desc.FullName())]; ok {
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fok = true
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err.types = append(err.types, string(message.Desc.FullName()))
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}
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}
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if fok {
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files[file.GeneratedFilenamePrefix] = err
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}
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}
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for file, err := range files {
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gfile := plugin.NewGeneratedFile(file+"_micro_errors.pb.go", ".")
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generateServiceErrors(gfile, err)
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}
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return nil
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}
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func getErrors(service *protogen.Service) map[string]struct{} {
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errors := make(map[string]struct{})
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for _, method := range service.Methods {
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if method.Desc.Options() == nil {
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continue
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}
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if !proto.HasExtension(method.Desc.Options(), openapi_options.E_Openapiv2Operation) {
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continue
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}
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opts := proto.GetExtension(method.Desc.Options(), openapi_options.E_Openapiv2Operation)
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if opts == nil {
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continue
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}
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r := opts.(*openapi_options.Operation)
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for _, response := range r.Responses {
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if response.Schema == nil || response.Schema.JsonSchema == nil {
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continue
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}
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errors[response.Schema.JsonSchema.Ref] = struct{}{}
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}
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}
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return errors
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}
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func generateServiceErrors(gfile *protogen.GeneratedFile, err *Error) {
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gfile.P("package ", err.packageName)
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gfile.P("import (")
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gfile.P(`"fmt"`)
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gfile.P(")")
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for _, typ := range err.types {
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gfile.P("func (err *", typ[strings.LastIndex(typ, ".")+1:], ") Error() string {")
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gfile.P(`return fmt.Sprintf("%#v", err)`)
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gfile.P("}")
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gfile.P()
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}
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}
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