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go-zero/gateway/internal/requestparser.go

82 lines
1.5 KiB
Go

package internal
import (
"bytes"
"encoding/json"
"io"
"net/http"
"github.com/fullstorydev/grpcurl"
"github.com/golang/protobuf/jsonpb"
"github.com/zeromicro/go-zero/rest/httpx"
"github.com/zeromicro/go-zero/rest/pathvar"
)
// NewRequestParser creates a new request parser from the given http.Request and resolver.
func NewRequestParser(r *http.Request, resolver jsonpb.AnyResolver) (grpcurl.RequestParser, error) {
vars := pathvar.Vars(r)
params, err := httpx.GetFormValues(r)
if err != nil {
return nil, err
}
for k, v := range vars {
params[k] = v
}
body, ok := getBody(r)
if !ok {
return buildJsonRequestParser(params, resolver)
}
if len(params) == 0 {
return grpcurl.NewJSONRequestParser(body, resolver), nil
}
m := make(map[string]any)
if err := json.NewDecoder(body).Decode(&m); err != nil {
return nil, err
}
for k, v := range params {
m[k] = v
}
return buildJsonRequestParser(m, resolver)
}
func buildJsonRequestParser(m map[string]any, resolver jsonpb.AnyResolver) (
grpcurl.RequestParser, error) {
var buf bytes.Buffer
if err := json.NewEncoder(&buf).Encode(m); err != nil {
return nil, err
}
return grpcurl.NewJSONRequestParser(&buf, resolver), nil
}
func getBody(r *http.Request) (io.Reader, bool) {
if r.Body == nil {
return nil, false
}
if r.ContentLength == 0 {
return nil, false
}
if r.ContentLength > 0 {
return r.Body, true
}
var buf bytes.Buffer
if _, err := io.Copy(&buf, r.Body); err != nil {
return nil, false
}
if buf.Len() > 0 {
return &buf, true
}
return nil, false
}