Bump google.golang.org/api

vendor/github.com/google/martian/header/copy_modifier.go

@@ -0,0 +1,83 @@
+// 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/log"
+	"github.com/google/martian/parse"
+	"github.com/google/martian/proxyutil"
+)
+
+func init() {
+	parse.Register("header.Copy", copyModifierFromJSON)
+}
+
+type copyModifier struct {
+	from, to string
+}
+
+type copyModifierJSON struct {
+	From  string               `json:"from"`
+	To    string               `json:"to"`
+	Scope []parse.ModifierType `json:"scope"`
+}
+
+// ModifyRequest copies the header in from to the request header for to.
+func (m *copyModifier) ModifyRequest(req *http.Request) error {
+	log.Debugf("header: copyModifier.ModifyRequest %s, from: %s, to: %s", req.URL, m.from, m.to)
+	h := proxyutil.RequestHeader(req)
+
+	return h.Set(m.to, h.Get(m.from))
+}
+
+// ModifyResponse copies the header in from to the response header for to.
+func (m *copyModifier) ModifyResponse(res *http.Response) error {
+	log.Debugf("header: copyModifier.ModifyResponse %s, from: %s, to: %s", res.Request.URL, m.from, m.to)
+	h := proxyutil.ResponseHeader(res)
+
+	return h.Set(m.to, h.Get(m.from))
+}
+
+// NewCopyModifier returns a modifier that will copy the header in from to the
+// header in to.
+func NewCopyModifier(from, to string) martian.RequestResponseModifier {
+	return &copyModifier{
+		from: from,
+		to:   to,
+	}
+}
+
+// copyModifierFromJSON builds a copy modifier from JSON.
+//
+// Example JSON:
+// {
+//   "header.Copy": {
+//     "scope": ["request", "response"],
+//     "from": "Original-Header",
+//     "to": "Copy-Header"
+//   }
+// }
+func copyModifierFromJSON(b []byte) (*parse.Result, error) {
+	msg := &copyModifierJSON{}
+	if err := json.Unmarshal(b, msg); err != nil {
+		return nil, err
+	}
+
+	return parse.NewResult(NewCopyModifier(msg.From, msg.To), msg.Scope)
+}