Sending images to google cloud storage using google app engine

Question

I wrote a simple webapp using google app engine in python that allows users to upload images and have it stored somewhere (for now I\'m just using the blob store based on th

Answer 1

Here's a simple upload handler that will write the blob that was uploaded to bigstore. Note you will need to have added your app's service account to the team account that is managing the bigstore bucket.

class UploadHandler(blobstore_handlers.BlobstoreUploadHandler):
  def post(self):
    upload_files = self.get_uploads('file')
    blob_info = upload_files[0]
    in_file_name = files.blobstore.get_file_name(blob_info.key())
    infile = files.open(in_file_name)
    out_file_name = '/gs/mybucket/' + blob_info.filename
    outfile = files.gs.create(out_file_name,
                              mime_type = blob_info.content_type)

    f = files.open(outfile, 'a')
    chunkSize = 1024 * 1024
    try:
      data = infile.read(chunkSize)
      while data:
        f.write(data)
        data = infile.read(chunkSize)
    finally:
      infile.close()
      f.close()

    files.finalize(outfile)

Answer 2

There isn't a difference between a binary stream and a text stream in cloud storage. You just write strings (or byte strings) to the file opened in "a" mode. Follow the instructions here.

Also, if you are serving images from the blobstore, you are probably better off using get_serving_url() from here, although that depends on your application.