/
filter.go
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/
filter.go
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/*
* Tencent is pleased to support the open source community by making Blueking Container Service available.
* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
* Licensed under the MIT License (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
* http://opensource.org/licenses/MIT
* 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 filter
import (
bcshttp "github.com/Tencent/bk-bcs/bcs-common/common/http"
"github.com/emicklei/go-restful"
"net/http"
)
// NewFilter create general filter
func NewFilter() *GeneralFilter {
return &GeneralFilter{
filterFunctions: []RequestFilterFunction{},
}
}
// GeneralFilter filter slice wrapper
type GeneralFilter struct {
filterFunctions []RequestFilterFunction
}
// RequestFilterFunction filter function definition
type RequestFilterFunction interface {
//Execute check http request
Execute(req *restful.Request) (int, error)
}
// Filter slice implementation
func (gf *GeneralFilter) Filter(req *restful.Request, resp *restful.Response, chain *restful.FilterChain) {
for _, filterFunction := range gf.filterFunctions {
errCode, err := filterFunction.Execute(req)
if err != nil {
resp.WriteHeaderAndEntity(http.StatusBadRequest, bcshttp.APIRespone{
Result: false,
Code: errCode,
Message: err.Error(),
Data: nil,
})
return
}
}
chain.ProcessFilter(req, resp)
}
// AppendFilter add filter
func (gf *GeneralFilter) AppendFilter(filterFunc RequestFilterFunction) {
gf.filterFunctions = append(gf.filterFunctions, filterFunc)
}