Switch to the oslo_utils.fileutils

fileutils is graduated in the oslo.utils library.
Remove the openstack.common package as well.

Implements: blueprint graduate-fileutils[1]
[1] https://blueprints.launchpad.net/oslo-incubator/+spec/graduate-fileutils

Depends-On: I51ba9076e1fbc16145ee2311f47b7768c16dcb20 (requirements)
Depends-On: I661dd222da6386a7dbcf854958a63e59b13e9ba4 (oslo.utils)

Change-Id: I6ba8f492a257096d27cbe83bfd06e53b7aabfa5d

.coveragerc

@@ -1,7 +1,7 @@
 [run]
 branch = True
 source = ceilometer
-omit = ceilometer/tests/*, ceilometer/openstack/common/*
+omit = ceilometer/tests/*
 
 [report]
 ignore-errors = True

ceilometer/hacking/checks.py

@@ -36,10 +36,6 @@ oslo_namespace_imports = re.compile(
 
 
 def check_oslo_namespace_imports(logical_line, physical_line, filename):
-    # ignore openstack.common since they are not maintained by us
-    if 'ceilometer/openstack/common/' in filename:
-        return
-
     if re.match(oslo_namespace_imports, logical_line):
         msg = ("C300: '%s' must be used instead of '%s'." % (
                logical_line.replace('oslo.', 'oslo_'),

ceilometer/openstack/common/_i18n.py

@@ -1,45 +0,0 @@
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-"""oslo.i18n integration module.
-
-See http://docs.openstack.org/developer/oslo.i18n/usage.html
-
-"""
-
-try:
-    import oslo_i18n
-
-    # NOTE(dhellmann): This reference to o-s-l-o will be replaced by the
-    # application name when this module is synced into the separate
-    # repository. It is OK to have more than one translation function
-    # using the same domain, since there will still only be one message
-    # catalog.
-    _translators = oslo_i18n.TranslatorFactory(domain='ceilometer')
-
-    # The primary translation function using the well-known name "_"
-    _ = _translators.primary
-
-    # Translators for log levels.
-    #
-    # The abbreviated names are meant to reflect the usual use of a short
-    # name like '_'. The "L" is for "log" and the other letter comes from
-    # the level.
-    _LI = _translators.log_info
-    _LW = _translators.log_warning
-    _LE = _translators.log_error
-    _LC = _translators.log_critical
-except ImportError:
-    # NOTE(dims): Support for cases where a project wants to use
-    # code from oslo-incubator, but is not ready to be internationalized
-    # (like tempest)
-    _ = _LI = _LW = _LE = _LC = lambda x: x

ceilometer/openstack/common/fileutils.py

@@ -1,149 +0,0 @@
-# Copyright 2011 OpenStack Foundation.
-# All Rights Reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-import contextlib
-import errno
-import logging
-import os
-import stat
-import tempfile
-
-from oslo_utils import excutils
-
-LOG = logging.getLogger(__name__)
-
-_FILE_CACHE = {}
-DEFAULT_MODE = stat.S_IRWXU | stat.S_IRWXG | stat.S_IRWXO
-
-
-def ensure_tree(path, mode=DEFAULT_MODE):
-    """Create a directory (and any ancestor directories required)
-
-    :param path: Directory to create
-    :param mode: Directory creation permissions
-    """
-    try:
-        os.makedirs(path, mode)
-    except OSError as exc:
-        if exc.errno == errno.EEXIST:
-            if not os.path.isdir(path):
-                raise
-        else:
-            raise
-
-
-def read_cached_file(filename, force_reload=False):
-    """Read from a file if it has been modified.
-
-    :param force_reload: Whether to reload the file.
-    :returns: A tuple with a boolean specifying if the data is fresh
-              or not.
-    """
-    global _FILE_CACHE
-
-    if force_reload:
-        delete_cached_file(filename)
-
-    reloaded = False
-    mtime = os.path.getmtime(filename)
-    cache_info = _FILE_CACHE.setdefault(filename, {})
-
-    if not cache_info or mtime > cache_info.get('mtime', 0):
-        LOG.debug("Reloading cached file %s" % filename)
-        with open(filename) as fap:
-            cache_info['data'] = fap.read()
-        cache_info['mtime'] = mtime
-        reloaded = True
-    return (reloaded, cache_info['data'])
-
-
-def delete_cached_file(filename):
-    """Delete cached file if present.
-
-    :param filename: filename to delete
-    """
-    global _FILE_CACHE
-
-    if filename in _FILE_CACHE:
-        del _FILE_CACHE[filename]
-
-
-def delete_if_exists(path, remove=os.unlink):
-    """Delete a file, but ignore file not found error.
-
-    :param path: File to delete
-    :param remove: Optional function to remove passed path
-    """
-
-    try:
-        remove(path)
-    except OSError as e:
-        if e.errno != errno.ENOENT:
-            raise
-
-
-@contextlib.contextmanager
-def remove_path_on_error(path, remove=delete_if_exists):
-    """Protect code that wants to operate on PATH atomically.
-    Any exception will cause PATH to be removed.
-
-    :param path: File to work with
-    :param remove: Optional function to remove passed path
-    """
-
-    try:
-        yield
-    except Exception:
-        with excutils.save_and_reraise_exception():
-            remove(path)
-
-
-def file_open(*args, **kwargs):
-    """Open file
-
-    see built-in open() documentation for more details
-
-    Note: The reason this is kept in a separate module is to easily
-    be able to provide a stub module that doesn't alter system
-    state at all (for unit tests)
-    """
-    return open(*args, **kwargs)
-
-
-def write_to_tempfile(content, path=None, suffix='', prefix='tmp'):
-    """Create temporary file or use existing file.
-
-    This util is needed for creating temporary file with
-    specified content, suffix and prefix. If path is not None,
-    it will be used for writing content. If the path doesn't
-    exist it'll be created.
-
-    :param content: content for temporary file.
-    :param path: same as parameter 'dir' for mkstemp
-    :param suffix: same as parameter 'suffix' for mkstemp
-    :param prefix: same as parameter 'prefix' for mkstemp
-
-    For example: it can be used in database tests for creating
-    configuration files.
-    """
-    if path:
-        ensure_tree(path)
-
-    (fd, path) = tempfile.mkstemp(suffix=suffix, dir=path, prefix=prefix)
-    try:
-        os.write(fd, content)
-    finally:
-        os.close(fd)
-    return path

ceilometer/tests/agent/agentbase.py

@@ -30,6 +30,7 @@ import eventlet
 import mock
 from oslo_config import fixture as fixture_config
 from oslo_service import service as os_service
+from oslo_utils import fileutils
 from oslo_utils import timeutils
 from oslotest import mockpatch
 import six
@@ -37,7 +38,6 @@ from stevedore import extension
 import yaml
 
 from ceilometer.agent import plugin_base
-from ceilometer.openstack.common import fileutils
 from ceilometer import pipeline
 from ceilometer import publisher
 from ceilometer.publisher import test as test_publisher

ceilometer/tests/meter/test_notifications.py

@@ -17,9 +17,9 @@ import six
 import yaml
 
 from oslo_config import fixture as fixture_config
+from oslo_utils import fileutils
 
 from ceilometer.meter import notifications
-from ceilometer.openstack.common import fileutils
 from ceilometer.tests import base as test
 
 NOTIFICATION = {

ceilometer/tests/test_bin.py

@@ -22,9 +22,9 @@ import subprocess
 import time
 
 import httplib2
+from oslo_utils import fileutils
 import six
 
-from ceilometer.openstack.common import fileutils
 from ceilometer.tests import base
 
 

ceilometer/tests/test_hacking.py

@@ -85,6 +85,3 @@ class HackingTestCase(testcase.TestCase):
         for code in codes:
             self._assert_has_errors(code, checks.check_oslo_namespace_imports,
                                     expected_errors=[(1, 0, "C300")])
-            self._assert_has_errors(
-                code, checks.check_oslo_namespace_imports,
-                filename="ceilometer/openstack/common/xyz.py")

ceilometer/tests/test_notification.py

@@ -23,6 +23,7 @@ from oslo_context import context
 import oslo_messaging
 import oslo_messaging.conffixture
 import oslo_service.service
+from oslo_utils import fileutils
 from oslo_utils import timeutils
 import six
 from stevedore import extension
@@ -31,7 +32,6 @@ import yaml
 from ceilometer.compute.notifications import instance
 from ceilometer import messaging
 from ceilometer import notification
-from ceilometer.openstack.common import fileutils
 from ceilometer.publisher import test as test_publisher
 from ceilometer.tests import base as tests_base
 

openstack-common.conf

@@ -1,7 +0,0 @@
-[DEFAULT]
-
-# The list of modules to copy from oslo-incubator
-module=fileutils
-
-# The base module to hold the copy of openstack.common
-base=ceilometer

requirements.txt

@@ -27,7 +27,7 @@ pecan>=0.8.0
 oslo.messaging>=1.16.0  # Apache-2.0
 oslo.middleware!=2.0.0,>=1.2.0 # Apache-2.0
 oslo.serialization>=1.4.0 # Apache-2.0
-oslo.utils>=1.6.0 # Apache-2.0
+oslo.utils>=1.9.0 # Apache-2.0
 pysnmp<5.0.0,>=4.2.1
 python-ceilometerclient>=1.0.13
 python-glanceclient>=0.18.0

tools/lintstack.py

@@ -29,9 +29,7 @@ from six.moves import cStringIO as StringIO  # noqa
 # These variables will be useful if we will need to skip some pylint checks
 ignore_codes = []
 ignore_messages = []
-# We ignore all errors in openstack.common because it should be checked
-# elsewhere.
-ignore_modules = ["ceilometer/openstack/common/"]
+ignore_modules = []
 
 KNOWN_PYLINT_EXCEPTIONS_FILE = "tools/pylint_exceptions"
 

tox.ini

@@ -150,7 +150,7 @@ commands = bash -x {toxinidir}/setup-test-env-elastic.sh oslo_debug_helper {posa
 
 [flake8]
 ignore =
-exclude=.venv,.git,.tox,dist,doc,./ceilometer/openstack/common,*lib/python*,*egg,build
+exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build
 show-source = True
 
 [hacking]