59 lines
1.5 KiB
Go
59 lines
1.5 KiB
Go
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package genswagger
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import (
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"bytes"
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"encoding/json"
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"errors"
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"fmt"
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"path/filepath"
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"strings"
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"github.com/golang/glog"
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"github.com/golang/protobuf/proto"
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plugin "github.com/golang/protobuf/protoc-gen-go/plugin"
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"github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway/descriptor"
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gen "github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway/generator"
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)
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var (
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errNoTargetService = errors.New("no target service defined in the file")
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)
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type generator struct {
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reg *descriptor.Registry
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}
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// New returns a new generator which generates grpc gateway files.
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func New(reg *descriptor.Registry) gen.Generator {
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return &generator{reg: reg}
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}
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func (g *generator) Generate(targets []*descriptor.File) ([]*plugin.CodeGeneratorResponse_File, error) {
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var files []*plugin.CodeGeneratorResponse_File
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for _, file := range targets {
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glog.V(1).Infof("Processing %s", file.GetName())
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code, err := applyTemplate(param{File: file, reg: g.reg})
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if err == errNoTargetService {
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glog.V(1).Infof("%s: %v", file.GetName(), err)
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continue
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}
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if err != nil {
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return nil, err
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}
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var formatted bytes.Buffer
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json.Indent(&formatted, []byte(code), "", " ")
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name := file.GetName()
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ext := filepath.Ext(name)
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base := strings.TrimSuffix(name, ext)
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output := fmt.Sprintf("%s.swagger.json", base)
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files = append(files, &plugin.CodeGeneratorResponse_File{
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Name: proto.String(output),
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Content: proto.String(formatted.String()),
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})
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glog.V(1).Infof("Will emit %s", output)
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}
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return files, nil
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}
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