You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
98 lines
2.2 KiB
98 lines
2.2 KiB
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"html/template"
|
|
"strings"
|
|
)
|
|
|
|
var httpTemplate = `
|
|
type {{.ServiceType}}HTTPServer interface {
|
|
{{range .MethodSets}}
|
|
{{.Name}}(context.Context, *{{.Request}}) (*{{.Reply}}, error)
|
|
{{end}}
|
|
}
|
|
func Register{{.ServiceType}}HTTPServer(s http1.ServiceRegistrar, srv {{.ServiceType}}HTTPServer) {
|
|
s.RegisterService(&_HTTP_{{.ServiceType}}_serviceDesc, srv)
|
|
}
|
|
{{range .Methods}}
|
|
func _HTTP_{{$.ServiceType}}_{{.Name}}_{{.Num}}(srv interface{}, ctx context.Context, req *http.Request, dec func(interface{}) error) (interface{}, error) {
|
|
var in {{.Request}}
|
|
{{if ne (len .Vars) 0}}
|
|
if err := http1.BindVars(req, &in); err != nil {
|
|
return nil, err
|
|
}
|
|
{{end}}
|
|
{{if eq .Body ""}}
|
|
if err := http1.BindForm(req, &in); err != nil {
|
|
return nil, err
|
|
}
|
|
{{else if eq .Body ".*"}}
|
|
if err := dec(&in); err != nil {
|
|
return nil, err
|
|
}
|
|
{{else}}
|
|
if err := dec(in{{.Body}}); err != nil {
|
|
return nil, err
|
|
}
|
|
{{end}}
|
|
out, err := srv.({{$.ServiceType}}Server).{{.Name}}(ctx, &in)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return out{{.ResponseBody}}, nil
|
|
}
|
|
{{end}}
|
|
var _HTTP_{{.ServiceType}}_serviceDesc = http1.ServiceDesc{
|
|
ServiceName: "{{.ServiceName}}",
|
|
Methods: []http1.MethodDesc{
|
|
{{range .Methods}}
|
|
{
|
|
Path: "{{.Path}}",
|
|
Method: "{{.Method}}",
|
|
Handler: _HTTP_{{$.ServiceType}}_{{.Name}}_{{.Num}},
|
|
},
|
|
{{end}}
|
|
},
|
|
Metadata: "{{.Metadata}}",
|
|
}
|
|
`
|
|
|
|
type serviceDesc struct {
|
|
ServiceType string // Greeter
|
|
ServiceName string // helloworld.Greeter
|
|
Metadata string // api/helloworld/helloworld.proto
|
|
Methods []*methodDesc
|
|
MethodSets map[string]*methodDesc
|
|
}
|
|
|
|
type methodDesc struct {
|
|
// method
|
|
Name string
|
|
Num int
|
|
Vars []string
|
|
Forms []string
|
|
Request string
|
|
Reply string
|
|
// http_rule
|
|
Path string
|
|
Method string
|
|
Body string
|
|
ResponseBody string
|
|
}
|
|
|
|
func (s *serviceDesc) execute() string {
|
|
s.MethodSets = make(map[string]*methodDesc)
|
|
for _, m := range s.Methods {
|
|
s.MethodSets[m.Name] = m
|
|
}
|
|
buf := new(bytes.Buffer)
|
|
tmpl, err := template.New("http").Parse(strings.TrimSpace(httpTemplate))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
if err := tmpl.Execute(buf, s); err != nil {
|
|
panic(err)
|
|
}
|
|
return string(buf.Bytes())
|
|
}
|
|
|