mirror of
https://github.com/dutchcoders/transfer.sh.git
synced 2025-01-15 21:20:19 +01:00
67 lines
1.9 KiB
Go
67 lines
1.9 KiB
Go
// Copyright 2015 Google Inc. All rights reserved.
|
|
//
|
|
// Licensed 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 header
|
|
|
|
import (
|
|
"encoding/json"
|
|
"net/http"
|
|
|
|
"github.com/google/martian"
|
|
"github.com/google/martian/parse"
|
|
)
|
|
|
|
const idHeaderName string = "X-Martian-ID"
|
|
|
|
func init() {
|
|
parse.Register("header.Id", idModifierFromJSON)
|
|
}
|
|
|
|
type idModifier struct{}
|
|
|
|
type idModifierJSON struct {
|
|
Scope []parse.ModifierType `json:"scope"`
|
|
}
|
|
|
|
// NewIDModifier returns a request modifier that will set a header with the name
|
|
// X-Martian-ID with a value that is a unique identifier for the request. In the case
|
|
// that the X-Martian-ID header is already set, the header is unmodified.
|
|
func NewIDModifier() martian.RequestModifier {
|
|
return &idModifier{}
|
|
}
|
|
|
|
// ModifyRequest sets the X-Martian-ID header with a unique identifier. In the case
|
|
// that the X-Martian-ID header is already set, the header is unmodified.
|
|
func (im *idModifier) ModifyRequest(req *http.Request) error {
|
|
// Do not rewrite an ID if req already has one
|
|
if req.Header.Get(idHeaderName) != "" {
|
|
return nil
|
|
}
|
|
|
|
ctx := martian.NewContext(req)
|
|
req.Header.Set(idHeaderName, ctx.ID())
|
|
|
|
return nil
|
|
}
|
|
|
|
func idModifierFromJSON(b []byte) (*parse.Result, error) {
|
|
msg := &idModifierJSON{}
|
|
if err := json.Unmarshal(b, msg); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
modifier := NewIDModifier()
|
|
|
|
return parse.NewResult(modifier, msg.Scope)
|
|
}
|