mirror of https://github.com/milvus-io/milvus.git
90 lines
2.6 KiB
Go
90 lines
2.6 KiB
Go
// Licensed to the LF AI & Data foundation under one
|
|
// or more contributor license agreements. See the NOTICE file
|
|
// distributed with this work for additional information
|
|
// regarding copyright ownership. The ASF licenses this file
|
|
// to you under the Apache License, Version 2.0 (the
|
|
// "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package httpserver
|
|
|
|
import (
|
|
"io"
|
|
"net/http"
|
|
|
|
"github.com/cockroachdb/errors"
|
|
"github.com/gin-gonic/gin"
|
|
"github.com/gin-gonic/gin/binding"
|
|
|
|
"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
|
|
)
|
|
|
|
var errBadRequest = errors.New("bad request")
|
|
|
|
// handlerFunc handles http request with gin context
|
|
type handlerFunc func(c *gin.Context) (interface{}, error)
|
|
|
|
// ErrResponse of server
|
|
type ErrResponse = commonpb.Status
|
|
|
|
// wrapHandler wraps a handlerFunc into a gin.HandlerFunc
|
|
func wrapHandler(handle handlerFunc) gin.HandlerFunc {
|
|
return func(c *gin.Context) {
|
|
data, err := handle(c)
|
|
// format body by accept header, protobuf marshal not supported by gin by default
|
|
// TODO: add marshal handler to support protobuf response
|
|
formatOffered := []string{binding.MIMEJSON, binding.MIMEYAML}
|
|
bodyFormatNegotiate := gin.Negotiate{
|
|
Offered: formatOffered,
|
|
Data: data,
|
|
}
|
|
if err != nil {
|
|
switch {
|
|
case errors.Is(err, errBadRequest):
|
|
bodyFormatNegotiate.Data = ErrResponse{
|
|
ErrorCode: commonpb.ErrorCode_IllegalArgument,
|
|
Reason: err.Error(),
|
|
}
|
|
c.Negotiate(http.StatusBadRequest, bodyFormatNegotiate)
|
|
return
|
|
default:
|
|
bodyFormatNegotiate.Data = ErrResponse{
|
|
ErrorCode: commonpb.ErrorCode_UnexpectedError,
|
|
Reason: err.Error(),
|
|
}
|
|
c.Negotiate(http.StatusInternalServerError, bodyFormatNegotiate)
|
|
return
|
|
}
|
|
}
|
|
c.Negotiate(http.StatusOK, bodyFormatNegotiate)
|
|
}
|
|
}
|
|
|
|
// gin.ShouldBind() default as `form`, but we want JSON
|
|
func shouldBind(c *gin.Context, obj interface{}) error {
|
|
b := getBinding(c.ContentType())
|
|
err := c.ShouldBindWith(obj, b)
|
|
if errors.Is(err, io.EOF) {
|
|
return nil
|
|
}
|
|
return err
|
|
}
|
|
|
|
func getBinding(contentType string) binding.Binding {
|
|
// ref: binding.Default
|
|
switch contentType {
|
|
case binding.MIMEYAML:
|
|
return binding.YAML
|
|
default:
|
|
return binding.JSON
|
|
}
|
|
}
|