我不能在“dev”上创建Google云存储文件_应用服务器.py."

Question

我发现了如下错误。在

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 Google Storage. But got status 404.
Path: '/app_default_bucket/multibytes.txt'.
Request headers: None.
Response headers: {'date': 'Mon, 07 Jul 2014 12:59:44 GMT', 'server': 'Development/2.0', 'connection': 'close'}.
Body: ''.
Extra info: None.
Traceback (most recent call last):
  File "/gcs.py", line 97, in status
        stat = gcs.stat("/%s/%s" % (b,nm))
  File "/cloudstorage/cloudstorage_api.py", line 142, in stat
        body=content)
  File "/cloudstorage/errors.py", line 132, in check_status
        raise NotFoundError(msg)
NotFoundError: Expect status [200] from Google Storage. But got status 404.
Path: '/app_default_bucket/multibytes.txt'.
Request headers: None.
Response headers: {'date': 'Mon, 07 Jul 2014 12:59:44 GMT', 'server': 'Development/2.0', 'connection': 'close'}.
Body: ''.
Extra info: None.

例如，这是我的自定义GCS cliet类。在

^{pr2}$

当只使用多字节文件名时，我发现了上面的一个错误。在

我在使用ascii文件名时没有发现任何错误。在

我使用的是在https://developers.google.com/appengine/docs/python/googlecloudstorageclient/download上给出的“GCS客户端库（Python）”。在

我的开发人员_应用服务器.py的版本是Development sdk1.9.6， 这是在MacOSxMarve上工作的？忘记）。在

有什么解决办法吗？在

Answer 1

我想您可能需要在将名称编码为utf8后调用urllib.quote()。在

以下是GCS Python demo（http://appengine-gcs-client.googlecode.com/svn/trunk/python/demo/main.py）的修改版本，使用多字节文件名可以正常工作：

# 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)