/usr/share/gocode/src/github.com/jacobsa/gcloud/gcs/update_object.go is in golang-github-jacobsa-gcloud-dev 0.0~git20150709-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 | // 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 gcs
import (
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"github.com/jacobsa/gcloud/httputil"
"golang.org/x/net/context"
"google.golang.org/api/googleapi"
storagev1 "google.golang.org/api/storage/v1"
)
func (b *bucket) makeUpdateObjectBody(
req *UpdateObjectRequest) (rc io.ReadCloser, err error) {
// Set up a map representing the JSON object we want to send to GCS. For now,
// we don't treat empty strings specially.
jsonMap := make(map[string]interface{})
if req.ContentType != nil {
jsonMap["contentType"] = req.ContentType
}
if req.ContentEncoding != nil {
jsonMap["contentEncoding"] = req.ContentEncoding
}
if req.ContentLanguage != nil {
jsonMap["contentLanguage"] = req.ContentLanguage
}
if req.CacheControl != nil {
jsonMap["cacheControl"] = req.CacheControl
}
// Implement the convention that a pointer to an empty string means to delete
// the field (communicated to GCS by setting it to null in the JSON).
for k, v := range jsonMap {
if *(v.(*string)) == "" {
jsonMap[k] = nil
}
}
// Add a field for user metadata if appropriate.
if req.Metadata != nil {
jsonMap["metadata"] = req.Metadata
}
// Set up a reader.
r, err := googleapi.WithoutDataWrapper.JSONReader(jsonMap)
if err != nil {
err = fmt.Errorf("JSONReader", err)
return
}
// Set up a ReadCloser.
rc = ioutil.NopCloser(r)
return
}
func (b *bucket) UpdateObject(
ctx context.Context,
req *UpdateObjectRequest) (o *Object, err error) {
// Construct an appropriate URL (cf. http://goo.gl/B46IDy).
opaque := fmt.Sprintf(
"//www.googleapis.com/storage/v1/b/%s/o/%s",
httputil.EncodePathSegment(b.Name()),
httputil.EncodePathSegment(req.Name))
query := make(url.Values)
query.Set("projection", "full")
url := &url.URL{
Scheme: "https",
Host: "www.googleapis.com",
Opaque: opaque,
RawQuery: query.Encode(),
}
// Set up the request body.
body, err := b.makeUpdateObjectBody(req)
if err != nil {
err = fmt.Errorf("makeUpdateObjectBody: %v", err)
return
}
// Create an HTTP request.
httpReq, err := httputil.NewRequest("PATCH", url, body, b.userAgent)
if err != nil {
err = fmt.Errorf("httputil.NewRequest: %v", err)
return
}
httpReq.Header.Set("Content-Type", "application/json")
// Execute the HTTP request.
httpRes, err := httputil.Do(ctx, b.client, httpReq)
if err != nil {
return
}
defer googleapi.CloseBody(httpRes)
// Check for HTTP-level errors.
if err = googleapi.CheckResponse(httpRes); err != nil {
// Special case: handle not found errors.
if typed, ok := err.(*googleapi.Error); ok {
if typed.Code == http.StatusNotFound {
err = &NotFoundError{Err: typed}
}
}
return
}
// Parse the response.
var rawObject *storagev1.Object
if err = json.NewDecoder(httpRes.Body).Decode(&rawObject); err != nil {
return
}
// Convert the response.
if o, err = toObject(rawObject); err != nil {
err = fmt.Errorf("toObject: %v", err)
return
}
return
}
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