Switch from pkg_resources to importlib
setuptools seems to be in the process of deprecating pkg_resources. Change-Id: I64f1434a5acab99057beb4f397adca85bdcc4ab6
This commit is contained in:
Tim Burke
parent
90f9a479b6
commit
bac5d8ff7f
@ -18,16 +18,30 @@ import sys
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import gettext
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import warnings
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import pkg_resources
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__version__ = None
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# First, try to get our version out of PKG-INFO. If we're installed,
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# this'll let us find our version without pulling in pbr. After all, if
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# we're installed on a system, we're not in a Git-managed source tree, so
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# pbr doesn't really buy us anything.
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try:
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# First, try to get our version out of PKG-INFO. If we're installed,
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# this'll let us find our version without pulling in pbr. After all, if
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# we're installed on a system, we're not in a Git-managed source tree, so
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# pbr doesn't really buy us anything.
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__version__ = __canonical_version__ = pkg_resources.get_provider(
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pkg_resources.Requirement.parse('swift')).version
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except pkg_resources.DistributionNotFound:
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import importlib.metadata
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except ImportError:
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# python < 3.8
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import pkg_resources
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try:
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__version__ = __canonical_version__ = pkg_resources.get_provider(
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pkg_resources.Requirement.parse('swift')).version
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except pkg_resources.DistributionNotFound:
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pass
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else:
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try:
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__version__ = __canonical_version__ = importlib.metadata.distribution(
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'swift').version
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except importlib.metadata.PackageNotFoundError:
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pass
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if __version__ is None:
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# No PKG-INFO? We're probably running from a checkout, then. Let pbr do
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# its thing to figure out a version number.
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import pbr.version
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@ -35,6 +49,7 @@ except pkg_resources.DistributionNotFound:
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__version__ = _version_info.release_string()
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__canonical_version__ = _version_info.version_string()
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_localedir = os.environ.get('SWIFT_LOCALEDIR')
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_t = gettext.translation('swift', localedir=_localedir, fallback=True)
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@ -15,7 +15,17 @@
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import lxml.etree
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from copy import deepcopy
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from pkg_resources import resource_stream # pylint: disable-msg=E0611
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try:
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# importlib.resources was introduced in py37, but couldn't handle
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# resources in subdirectories (which we use); files() added support
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from importlib.resources import files
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del files
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except ImportError:
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# python < 3.9
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from pkg_resources import resource_stream # pylint: disable-msg=E0611
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else:
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import importlib.resources
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resource_stream = None
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import six
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from swift.common.utils import get_logger
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@ -70,7 +80,13 @@ def fromstring(text, root_tag=None, logger=None):
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# validate XML
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try:
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path = 'schema/%s.rng' % camel_to_snake(root_tag)
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with resource_stream(__name__, path) as rng:
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if resource_stream:
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# python < 3.9
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stream = resource_stream(__name__, path)
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else:
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stream = importlib.resources.files(
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__name__.rsplit('.', 1)[0]).joinpath(path).open('rb')
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with stream as rng:
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lxml.etree.RelaxNG(file=rng).assertValid(elem)
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except IOError as e:
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# Probably, the schema file doesn't exist.
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@ -58,7 +58,12 @@ import eventlet.debug
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import eventlet.greenthread
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import eventlet.patcher
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import eventlet.semaphore
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import pkg_resources
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try:
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import importlib.metadata
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pkg_resources = None
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except ImportError:
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# python < 3.8
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import pkg_resources
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from eventlet import GreenPool, sleep, Timeout
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from eventlet.event import Event
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from eventlet.green import socket, threading
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@ -6415,7 +6420,19 @@ def load_pkg_resource(group, uri):
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if scheme != 'egg':
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raise TypeError('Unhandled URI scheme: %r' % scheme)
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return pkg_resources.load_entry_point(dist, group, name)
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if pkg_resources:
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# python < 3.8
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return pkg_resources.load_entry_point(dist, group, name)
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# May raise importlib.metadata.PackageNotFoundError
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meta = importlib.metadata.distribution(dist)
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entry_points = [ep for ep in meta.entry_points
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if ep.group == group and ep.name == name]
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if not entry_points:
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raise ImportError("Entry point %r not found" % ((group, name),))
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return entry_points[0].load()
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class PipeMutex(object):
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@ -4801,6 +4801,9 @@ cluster_dfw1 = http://dfw1.host/v1/
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'X-Backend-Redirect-Timestamp': '-1'})
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self.assertIn('Invalid timestamp', str(exc))
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@unittest.skipIf(sys.version_info >= (3, 8),
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'pkg_resources loading is only available on python 3.7 '
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'and earlier')
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@mock.patch('pkg_resources.load_entry_point')
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def test_load_pkg_resource(self, mock_driver):
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tests = {
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@ -4824,6 +4827,59 @@ cluster_dfw1 = http://dfw1.host/v1/
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utils.load_pkg_resource(*args)
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self.assertEqual("Unhandled URI scheme: 'nog'", str(cm.exception))
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@unittest.skipIf(sys.version_info < (3, 8),
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'importlib loading is only available on python 3.8 '
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'and later')
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@mock.patch('importlib.metadata.distribution')
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def test_load_pkg_resource_importlib(self, mock_driver):
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import importlib.metadata
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repl_obj = object()
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ec_obj = object()
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other_obj = object()
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mock_driver.return_value.entry_points = [
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importlib.metadata.EntryPoint(group='swift.diskfile',
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name='replication.fs',
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value=repl_obj),
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importlib.metadata.EntryPoint(group='swift.diskfile',
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name='erasure_coding.fs',
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value=ec_obj),
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importlib.metadata.EntryPoint(group='swift.section',
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name='thing.other',
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value=other_obj),
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]
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for ep in mock_driver.return_value.entry_points:
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ep.load = lambda ep=ep: ep.value
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tests = {
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('swift.diskfile', 'egg:swift#replication.fs'): repl_obj,
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('swift.diskfile', 'egg:swift#erasure_coding.fs'): ec_obj,
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('swift.section', 'egg:swift#thing.other'): other_obj,
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('swift.section', 'swift#thing.other'): other_obj,
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('swift.section', 'thing.other'): other_obj,
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}
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for args, expected in tests.items():
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self.assertIs(expected, utils.load_pkg_resource(*args))
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self.assertEqual(mock_driver.mock_calls, [mock.call('swift')])
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mock_driver.reset_mock()
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with self.assertRaises(TypeError) as cm:
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args = ('swift.diskfile', 'nog:swift#replication.fs')
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utils.load_pkg_resource(*args)
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self.assertEqual("Unhandled URI scheme: 'nog'", str(cm.exception))
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with self.assertRaises(ImportError) as cm:
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args = ('swift.diskfile', 'other.fs')
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utils.load_pkg_resource(*args)
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self.assertEqual(
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"Entry point ('swift.diskfile', 'other.fs') not found",
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str(cm.exception))
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with self.assertRaises(ImportError) as cm:
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args = ('swift.missing', 'thing.other')
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utils.load_pkg_resource(*args)
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self.assertEqual(
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"Entry point ('swift.missing', 'thing.other') not found",
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str(cm.exception))
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@with_tempdir
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def test_systemd_notify(self, tempdir):
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m_sock = mock.Mock(connect=mock.Mock(), sendall=mock.Mock())
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