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58 lines
1.7 KiB
58 lines
1.7 KiB
package main
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import (
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pb "github.com/go-kratos/kratos/v2/api/kratos/api"
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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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const (
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errorsPackage = protogen.GoImportPath("github.com/go-kratos/kratos/v2/errors")
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)
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// generateFile generates a _http.pb.go file containing kratos errors definitions.
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func generateFile(gen *protogen.Plugin, file *protogen.File) *protogen.GeneratedFile {
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if len(file.Enums) == 0 {
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return nil
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}
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filename := file.GeneratedFilenamePrefix + "_errors.pb.go"
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g := gen.NewGeneratedFile(filename, file.GoImportPath)
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g.P("// Code generated by protoc-gen-go-errors. DO NOT EDIT.")
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g.P()
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g.P("package ", file.GoPackageName)
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g.P()
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generateFileContent(gen, file, g)
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return g
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}
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// generateFileContent generates the kratos errors definitions, excluding the package statement.
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func generateFileContent(gen *protogen.Plugin, file *protogen.File, g *protogen.GeneratedFile) {
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if len(file.Enums) == 0 {
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return
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}
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g.P("// This is a compile-time assertion to ensure that this generated file")
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g.P("// is compatible with the kratos package it is being compiled against.")
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g.P("const _ = ", errorsPackage.Ident("SupportPackageIsVersion1"))
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g.P()
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for _, enum := range file.Enums {
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genErrorsReason(gen, file, g, enum)
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}
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}
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func genErrorsReason(gen *protogen.Plugin, file *protogen.File, g *protogen.GeneratedFile, enum *protogen.Enum) {
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err := proto.GetExtension(enum.Desc.Options(), pb.E_Errors)
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if ok := err.(bool); !ok {
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return
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}
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var ew errorWrapper
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for _, v := range enum.Values {
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err := &errorInfo{
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Name: string(enum.Desc.Name()),
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Value: string(v.Desc.Name()),
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}
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ew.Errors = append(ew.Errors, err)
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}
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g.P(ew.execute())
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}
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