Remove sendfile support
pysendfile[1] was added as an optional dependency but the library hasn't been maintained and has got no release since 2014. What is worse, the sendfile implementation is not actually working since The SendFileIterator class was removed[2]. (Follow-up[3] removed the remaining reference to the class). The broken implementation has not been detected because the client is not currently used to upload contents. Remove the incomplete implementation to get rid of the dependency on the unmaintained library. [1] https://pypi.org/project/pysendfile/ [2]76c3620c7e[3]0c151d7d7eCloses-Bug: #2062573 Change-Id: Ia4784f59d16660e8d40c0e409f092ac4e46870b4
This commit is contained in:
Takashi Kajinami
parent
0bcd6cd71c
commit
205ca3336a
@ -23,9 +23,8 @@ External Requirements Affecting Glance
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Like other OpenStack projects, Glance uses some external libraries for a subset
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of its features. Some examples include the ``qemu-img`` utility used by the
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tasks feature, ``sendfile`` to utilize the "zero-copy" way of copying data
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faster, ``pydev`` to debug using popular IDEs, ``python-xattr`` for Image Cache
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using "xattr" driver.
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tasks feature, ``pydev`` to debug using popular IDEs, ``python-xattr`` for
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Image Cache using "xattr" driver.
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On the other hand, if ``dnspython`` is installed in the environment, Glance
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provides a workaround to make it work with IPV6.
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@ -19,7 +19,6 @@
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import collections.abc
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import copy
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import errno
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import functools
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import http.client
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import os
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@ -35,12 +34,6 @@ except ImportError:
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import osprofiler.web
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try:
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import sendfile # noqa
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SENDFILE_SUPPORTED = True
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except ImportError:
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SENDFILE_SUPPORTED = False
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from oslo_log import log as logging
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from oslo_utils import encodeutils
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from oslo_utils import netutils
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@ -446,12 +439,6 @@ class BaseClient(object):
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def _filelike(body):
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return hasattr(body, 'read')
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def _sendbody(connection, iter):
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connection.endheaders()
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for sent in iter:
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# iterator has done the heavy lifting
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pass
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def _chunkbody(connection, iter):
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connection.putheader('Transfer-Encoding', 'chunked')
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connection.endheaders()
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@ -469,21 +456,14 @@ class BaseClient(object):
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elif _filelike(body) or self._iterable(body):
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c.putrequest(method, path)
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use_sendfile = self._sendable(body)
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# According to HTTP/1.1, Content-Length and Transfer-Encoding
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# conflict.
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for header, value in headers.items():
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if use_sendfile or header.lower() != 'content-length':
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if header.lower() != 'content-length':
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c.putheader(header, str(value))
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iter = utils.chunkreadable(body)
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if use_sendfile:
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# send actual file without copying into userspace
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_sendbody(c, iter)
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else:
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# otherwise iterate and chunk
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_chunkbody(c, iter)
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else:
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raise TypeError('Unsupported image type: %s' % body.__class__)
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@ -528,22 +508,6 @@ class BaseClient(object):
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except (socket.error, IOError) as e:
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raise exception.ClientConnectionError(e)
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def _seekable(self, body):
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# pipes are not seekable, avoids sendfile() failure on e.g.
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# cat /path/to/image | glance add ...
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# or where add command is launched via popen
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try:
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os.lseek(body.fileno(), 0, os.SEEK_CUR)
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return True
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except OSError as e:
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return (e.errno != errno.ESPIPE)
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def _sendable(self, body):
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return (SENDFILE_SUPPORTED and
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hasattr(body, 'fileno') and
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self._seekable(body) and
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not self.use_ssl)
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def _iterable(self, body):
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return isinstance(body, collections.abc.Iterable)
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@ -15,23 +15,11 @@
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"""Stubouts, mocks and fixtures for the test suite"""
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import os
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try:
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import sendfile
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SENDFILE_SUPPORTED = True
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except ImportError:
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SENDFILE_SUPPORTED = False
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import routes
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import webob
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from glance.api.middleware import context
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from glance.api.v2 import router
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import glance.common.client
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DEBUG = False
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def stub_out_store_server(stubs, base_dir, **kwargs):
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@ -49,23 +37,10 @@ def stub_out_store_server(stubs, base_dir, **kwargs):
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def fileno(self):
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return 42
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class FakeSendFile(object):
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def __init__(self, req):
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self.req = req
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def sendfile(self, o, i, offset, nbytes):
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os.lseek(i, offset, os.SEEK_SET)
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prev_len = len(self.req.body)
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self.req.body += os.read(i, nbytes)
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return len(self.req.body) - prev_len
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class FakeGlanceConnection(object):
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def __init__(self, *args, **kwargs):
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self.sock = FakeSocket()
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self.stub_force_sendfile = kwargs.get('stub_force_sendfile',
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SENDFILE_SUPPORTED)
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def connect(self):
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return True
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@ -75,9 +50,6 @@ def stub_out_store_server(stubs, base_dir, **kwargs):
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def putrequest(self, method, url):
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self.req = webob.Request.blank(url)
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if self.stub_force_sendfile:
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fake_sendfile = FakeSendFile(self.req)
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stubs.Set(sendfile, 'sendfile', fake_sendfile.sendfile)
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self.req.method = method
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def putheader(self, key, value):
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@ -118,15 +90,3 @@ def stub_out_store_server(stubs, base_dir, **kwargs):
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def fake_image_iter(self):
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for i in self.source.app_iter:
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yield i
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def fake_sendable(self, body):
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force = getattr(self, 'stub_force_sendfile', None)
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if force is None:
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return self._stub_orig_sendable(body)
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else:
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if force:
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assert glance.common.client.SENDFILE_SUPPORTED
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return force
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setattr(glance.common.client.BaseClient, '_stub_orig_sendable',
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glance.common.client.BaseClient._sendable)
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@ -20,7 +20,6 @@ boto3>=1.9.199 # Apache-2.0
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# Optional packages that should be installed when testing
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PyMySQL>=0.7.6 # MIT License
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psycopg2>=2.8.4 # LGPL/ZPL
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pysendfile>=2.0.0;sys_platform!='win32' # MIT
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xattr>=0.9.2;sys_platform!='win32' # MIT
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python-swiftclient>=3.2.0 # Apache-2.0
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python-cinderclient>=4.1.0 # Apache-2.0
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