I Can't Create A Google Cloud Storage File Working On "dev_appserver.py."

I caught an error as below. INFO ~ module.py:639] default: 'HEAD /_ah/gcs/app_default_bucket/multibytes.txt HTTP/1.1' 404 - ERROR ~ gcs.py:99] Expect status [200] from Googl

Solution 1:

I think you may need to call urllib.quote() on the name after encoding it to utf8.

Here is a modified version of the GCS Python demo (http://appengine-gcs-client.googlecode.com/svn/trunk/python/demo/main.py) that works properly using a multibyte filename:

# Copyright 2012 Google Inc. All Rights Reserved.
# encoding: utf-8

"""A modified version of the sample app that uses GCS client to operate on
   bucket and file.
"""

import logging
import os
import cloudstorage as gcs
import webapp2
import urllib

from google.appengine.api import app_identity

my_default_retry_params = gcs.RetryParams(initial_delay=0.2,
                                          max_delay=5.0,
                                          backoff_factor=2,
                                          max_retry_period=15)
gcs.set_default_retry_params(my_default_retry_params)


class MainPage(webapp2.RequestHandler):
  """Main page for GCS demo application."""

  def get(self):
    bucket_name = os.environ.get('BUCKET_NAME',
                                 app_identity.get_default_gcs_bucket_name())

    self.response.headers['Content-Type'] = 'text/plain'
    self.response.write('Demo GCS Application running from Version: '
                        + os.environ['CURRENT_VERSION_ID'] + '\n')
    self.response.write('Using bucket name: ' + bucket_name + '\n\n')

    bucket = '/' + bucket_name
    filename = bucket + '/' + urllib.quote(u'あいうえお.txt'.encode('utf8'))
    self.tmp_filenames_to_clean_up = []

    try:
      self.create_file(filename)
      self.response.write('\n\n')

      self.read_file(filename)
      self.response.write('\n\n')

    except Exception, e:
      logging.exception(e)
      self.delete_files()
      self.response.write('\n\nThere was an error running the demo! '
                          'Please check the logs for more details.\n')

    else:
      self.delete_files()
      self.response.write('\n\nThe demo ran successfully!\n')

  def create_file(self, filename):
    """Create a file.

    The retry_params specified in the open call will override the default
    retry params for this particular file handle.

    Args:
      filename: filename.
    """
    self.response.write('Creating file %s\n' %
                        urllib.unquote(filename).decode('utf-8'))

    write_retry_params = gcs.RetryParams(backoff_factor=1.1)
    gcs_file = gcs.open(filename,
                        'w',
                        content_type='text/plain',
                        options={'x-goog-meta-foo': 'foo',
                                 'x-goog-meta-bar': 'bar'},
                        retry_params=write_retry_params)
    gcs_file.write('some data ...¥n\n')
    gcs_file.close()
    self.tmp_filenames_to_clean_up.append(filename)


  def read_file(self, filename):
    self.response.write('File Content:\n')

    gcs_file = gcs.open(filename)
    self.response.write(gcs_file.readline())
    gcs_file.close()

  def delete_files(self):
    self.response.write('Deleting files...\n')
    for filename in self.tmp_filenames_to_clean_up:
      self.response.write('Deleting file %s\n' %
                          urllib.unquote(filename).decode('utf-8'))
      try:
        gcs.delete(filename)
      except gcs.NotFoundError:
        pass

app = webapp2.WSGIApplication([('/', MainPage)],
                              debug=True)