ActiveGo 1.8Package blobstore
Overview ▹
Index ▹
func BlobKeyForFile ¶
func BlobKeyForFile(c context.Context, filename string) (appengine.BlobKey, error)
BlobKeyForFile returns a BlobKey for a Google Storage file. The filename should be of the form "/gs/bucket_name/object_name".
func Delete ¶
func Delete(c context.Context, blobKey appengine.BlobKey) error
Delete deletes a blob.
func DeleteMulti ¶
func DeleteMulti(c context.Context, blobKey []appengine.BlobKey) error
DeleteMulti deletes multiple blobs.
func ParseUpload ¶
func ParseUpload(req *http.Request) (blobs map[string][]*BlobInfo, other url.Values, err error)
ParseUpload parses the synthetic POST request that your app gets from App Engine after a user's successful upload of blobs. Given the request, ParseUpload returns a map of the blobs received (keyed by HTML form element name) and other non-blob POST parameters.
func Send ¶
func Send(response http.ResponseWriter, blobKey appengine.BlobKey)
Send sets the headers on response to instruct App Engine to send a blob as the response body. This is more efficient than reading and writing it out manually and isn't subject to normal response size limits.
func UploadURL ¶
func UploadURL(c context.Context, successPath string, opts *UploadURLOptions) (*url.URL, error)
UploadURL creates an upload URL for the form that the user will fill out, passing the application path to load when the POST of the form is completed. These URLs expire and should not be reused. The opts parameter may be nil.
type BlobInfo ¶
BlobInfo is the blob metadata that is stored in the datastore. Filename may be empty.
type BlobInfo struct {
BlobKey appengine.BlobKey
ContentType string `datastore:"content_type"`
CreationTime time.Time `datastore:"creation"`
Filename string `datastore:"filename"`
Size int64 `datastore:"size"`
MD5 string `datastore:"md5_hash"`
// ObjectName is the Google Cloud Storage name for this blob.
ObjectName string `datastore:"gs_object_name"`
}
func Stat ¶
func Stat(c context.Context, blobKey appengine.BlobKey) (*BlobInfo, error)
Stat returns the BlobInfo for a provided blobKey. If no blob was found for that key, Stat returns datastore.ErrNoSuchEntity.
type Reader ¶
Reader is a blob reader.
type Reader interface {
io.Reader
io.ReaderAt
io.Seeker
}
func NewReader ¶
func NewReader(c context.Context, blobKey appengine.BlobKey) Reader
NewReader returns a reader for a blob. It always succeeds; if the blob does not exist then an error will be reported upon first read.
type UploadURLOptions ¶
UploadURLOptions are the options to create an upload URL.
type UploadURLOptions struct {
MaxUploadBytes int64 // optional
MaxUploadBytesPerBlob int64 // optional
// StorageBucket specifies the Google Cloud Storage bucket in which
// to store the blob.
// This is required if you use Cloud Storage instead of Blobstore.
// Your application must have permission to write to the bucket.
// You may optionally specify a bucket name and path in the format
// "bucket_name/path", in which case the included path will be the
// prefix of the uploaded object's name.
StorageBucket string
}