Repository: Azure/WALinuxAgent (python)

Issue:
Deprecation of distutils
Considering that `disutils` is [deprecated](https://peps.python.org/pep-0632/) in Python 3.10 and Python 3.11. Are the plans to tackle this issue for Python 3.12 when it will no longer be supported by python since it is used couple of places.

Pull request description:
Add distutils/version.py to azurelinuxagent
distutils was removed from Python >= 12. We use Version and LooseVersion from it. 

Adding distutils/version.py to azurelinuxagent. StrictVersion was removed from the copy to  avoid adding more dependencies to this deprecated module.

Fixes #2919 

Patch:
diff --git a/azurelinuxagent/common/future.py b/azurelinuxagent/common/future.py
index be28ba9d..e9bb7e93 100644
--- a/azurelinuxagent/common/future.py
+++ b/azurelinuxagent/common/future.py
@@ -61,7 +61,6 @@ elif sys.version_info[0] == 2:
     range = xrange
     int = long
 
-
     if sys.version_info[1] >= 7:
         from collections import OrderedDict  # For Py 2.7+
     else:
@@ -69,6 +68,16 @@ elif sys.version_info[0] == 2:
 else:
     raise ImportError("Unknown python version: {0}".format(sys.version_info))
 
+#
+# distutils has been removed from Python >= 3.12; use the copy from azurelinuxagent instead
+#
+if sys.version_info[0] == 3 and sys.version_info[1] >= 12:
+    from azurelinuxagent.distutils import version
+else:
+    from distutils import version  # pylint: disable=deprecated-module
+Version = version.Version
+LooseVersion = version.LooseVersion
+
 
 def get_linux_distribution(get_full_name, supported_dists):
     """Abstract platform.linux_distribution() call which is deprecated as of
diff --git a/azurelinuxagent/common/osutil/factory.py b/azurelinuxagent/common/osutil/factory.py
index 0a29029c..25a6060a 100644
--- a/azurelinuxagent/common/osutil/factory.py
+++ b/azurelinuxagent/common/osutil/factory.py
@@ -16,7 +16,7 @@
 #
 
 
-from distutils.version import LooseVersion as Version  # pylint: disable=no-name-in-module, import-error, disable=deprecated-module
+from azurelinuxagent.common.future import LooseVersion as Version
 
 import azurelinuxagent.common.logger as logger
 from azurelinuxagent.common.version import DISTRO_NAME, DISTRO_CODE_NAME, DISTRO_VERSION, DISTRO_FULL_NAME
diff --git a/azurelinuxagent/common/utils/flexible_version.py b/azurelinuxagent/common/utils/flexible_version.py
index ac3ac934..633fe771 100644
--- a/azurelinuxagent/common/utils/flexible_version.py
+++ b/azurelinuxagent/common/utils/flexible_version.py
@@ -17,11 +17,11 @@
 # Requires Python 2.6+ and Openssl 1.0+
 #
 
-from distutils import version  # pylint: disable=no-name-in-module, disable=deprecated-module
+from azurelinuxagent.common.future import Version
 import re
 
 
-class FlexibleVersion(version.Version):
+class FlexibleVersion(Version):
     """
     A more flexible implementation of distutils.version.StrictVersion
 
@@ -41,7 +41,7 @@ class FlexibleVersion(version.Version):
     """
 
     def __init__(self, vstring=None, sep='.', prerel_tags=('alpha', 'beta', 'rc')):
-        version.Version.__init__(self) 
+        Version.__init__(self)
 
         if sep is None:
             sep = '.'
diff --git a/azurelinuxagent/distutils/__init__.py b/azurelinuxagent/distutils/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/azurelinuxagent/distutils/version.py b/azurelinuxagent/distutils/version.py
new file mode 100644
index 00000000..acb8b0a5
--- /dev/null
+++ b/azurelinuxagent/distutils/version.py
@@ -0,0 +1,236 @@
+#
+# A copy of distutils/version.py as Python 3.8 (minus the StrictVersion class)
+#
+# Implements multiple version numbering conventions for the
+# Python Module Distribution Utilities.
+#
+# $Id$
+#
+
+"""Provides classes to represent module version numbers (one class for
+each style of version numbering).  There are currently two such classes
+implemented: StrictVersion and LooseVersion.
+
+Every version number class implements the following interface:
+  * the 'parse' method takes a string and parses it to some internal
+    representation; if the string is an invalid version number,
+    'parse' raises a ValueError exception
+  * the class constructor takes an optional string argument which,
+    if supplied, is passed to 'parse'
+  * __str__ reconstructs the string that was passed to 'parse' (or
+    an equivalent string -- ie. one that will generate an equivalent
+    version number instance)
+  * __repr__ generates Python code to recreate the version number instance
+  * _cmp compares the current instance with either another instance
+    of the same class or a string (which will be parsed to an instance
+    of the same class, thus must follow the same rules)
+"""
+
+import re
+
+# E1101: Instance of 'Version' has no '_cmp' member (no-member)
+# pylint: disable=no-member
+
+
+class Version:
+    """Abstract base class for version numbering classes.  Just provides
+    constructor (__init__) and reproducer (__repr__), because those
+    seem to be the same for all version numbering classes; and route
+    rich comparisons to _cmp.
+    """
+
+    def __init__(self, vstring=None):
+        if vstring:
+            self.parse(vstring)
+
+    def __repr__(self):
+        return "%s ('%s')" % (self.__class__.__name__, str(self))
+
+    def __eq__(self, other):
+        c = self._cmp(other)
+        if c is NotImplemented:
+            return c
+        return c == 0
+
+    def __lt__(self, other):
+        c = self._cmp(other)
+        if c is NotImplemented:
+            return c
+        return c < 0
+
+    def __le__(self, other):
+        c = self._cmp(other)
+        if c is NotImplemented:
+            return c
+        return c <= 0
+
+    def __gt__(self, other):
+        c = self._cmp(other)
+        if c is NotImplemented:
+            return c
+        return c > 0
+
+    def __ge__(self, other):
+        c = self._cmp(other)
+        if c is NotImplemented:
+            return c
+        return c >= 0
+
+
+# Interface for version-number classes -- must be implemented
+# by the following classes (the concrete ones -- Version should
+# be treated as an abstract class).
+#    __init__ (string) - create and take same action as 'parse'
+#                        (string parameter is optional)
+#    parse (string)    - convert a string representation to whatever
+#                        internal representation is appropriate for
+#                        this style of version numbering
+#    __str__ (self)    - convert back to a string; should be very similar
+#                        (if not identical to) the string supplied to parse
+#    __repr__ (self)   - generate Python code to recreate
+#                        the instance
+#    _cmp (self, other) - compare two version numbers ('other' may
+#                        be an unparsed version string, or another
+#                        instance of your version class)
+
+
+# The rules according to Greg Stein:
+# 1) a version number has 1 or more numbers separated by a period or by
+#    sequences of letters. If only periods, then these are compared
+#    left-to-right to determine an ordering.
+# 2) sequences of letters are part of the tuple for comparison and are
+#    compared lexicographically
+# 3) recognize the numeric components may have leading zeroes
+#
+# The LooseVersion class below implements these rules: a version number
+# string is split up into a tuple of integer and string components, and
+# comparison is a simple tuple comparison.  This means that version
+# numbers behave in a predictable and obvious way, but a way that might
+# not necessarily be how people *want* version numbers to behave.  There
+# wouldn't be a problem if people could stick to purely numeric version
+# numbers: just split on period and compare the numbers as tuples.
+# However, people insist on putting letters into their version numbers;
+# the most common purpose seems to be:
+#   - indicating a "pre-release" version
+#     ('alpha', 'beta', 'a', 'b', 'pre', 'p')
+#   - indicating a post-release patch ('p', 'pl', 'patch')
+# but of course this can't cover all version number schemes, and there's
+# no way to know what a programmer means without asking him.
+#
+# The problem is what to do with letters (and other non-numeric
+# characters) in a version number.  The current implementation does the
+# obvious and predictable thing: keep them as strings and compare
+# lexically within a tuple comparison.  This has the desired effect if
+# an appended letter sequence implies something "post-release":
+# eg. "0.99" < "0.99pl14" < "1.0", and "5.001" < "5.001m" < "5.002".
+#
+# However, if letters in a version number imply a pre-release version,
+# the "obvious" thing isn't correct.  Eg. you would expect that
+# "1.5.1" < "1.5.2a2" < "1.5.2", but under the tuple/lexical comparison
+# implemented here, this just isn't so.
+#
+# Two possible solutions come to mind.  The first is to tie the
+# comparison algorithm to a particular set of semantic rules, as has
+# been done in the StrictVersion class above.  This works great as long
+# as everyone can go along with bondage and discipline.  Hopefully a
+# (large) subset of Python module programmers will agree that the
+# particular flavour of bondage and discipline provided by StrictVersion
+# provides enough benefit to be worth using, and will submit their
+# version numbering scheme to its domination.  The free-thinking
+# anarchists in the lot will never give in, though, and something needs
+# to be done to accommodate them.
+#
+# Perhaps a "moderately strict" version class could be implemented that
+# lets almost anything slide (syntactically), and makes some heuristic
+# assumptions about non-digits in version number strings.  This could
+# sink into special-case-hell, though; if I was as talented and
+# idiosyncratic as Larry Wall, I'd go ahead and implement a class that
+# somehow knows that "1.2.1" < "1.2.2a2" < "1.2.2" < "1.2.2pl3", and is
+# just as happy dealing with things like "2g6" and "1.13++".  I don't
+# think I'm smart enough to do it right though.
+#
+# In any case, I've coded the test suite for this module (see
+# ../test/test_version.py) specifically to fail on things like comparing
+# "1.2a2" and "1.2".  That's not because the *code* is doing anything
+# wrong, it's because the simple, obvious design doesn't match my
+# complicated, hairy expectations for real-world version numbers.  It
+# would be a snap to fix the test suite to say, "Yep, LooseVersion does
+# the Right Thing" (ie. the code matches the conception).  But I'd rather
+# have a conception that matches common notions about version numbers.
+
+# W0231: __init__ method from base class 'Version' is not called (super-init-not-called)
+# R1710: Either all return statements in a function should return an expression, or none of them should. (inconsistent-return-statements)
+# pylint: disable=super-init-not-called, inconsistent-return-statements
+
+class LooseVersion (Version):
+
+    """Version numbering for anarchists and software realists.
+    Implements the standard interface for version number classes as
+    described above.  A version number consists of a series of numbers,
+    separated by either periods or strings of letters.  When comparing
+    version numbers, the numeric components will be compared
+    numerically, and the alphabetic components lexically.  The following
+    are all valid version numbers, in no particular order:
+
+        1.5.1
+        1.5.2b2
+        161
+        3.10a
+        8.02
+        3.4j
+        1996.07.12
+        3.2.pl0
+        3.1.1.6
+        2g6
+        11g
+        0.960923
+        2.2beta29
+        1.13++
+        5.5.kw
+        2.0b1pl0
+
+    In fact, there is no such thing as an invalid version number under
+    this scheme; the rules for comparison are simple and predictable,
+    but may not always give the results you want (for some definition
+    of "want").
+    """
+
+    component_re = re.compile(r'(\d+|[a-z]+|\.)', re.VERBOSE)
+
+    def __init__(self, vstring=None):
+        if vstring:
+            self.parse(vstring)
+
+    def parse(self, vstring):
+        # I've given up on thinking I can reconstruct the version string
+        # from the parsed tuple -- so I just store the string here for
+        # use by __str__
+        self.vstring = vstring
+        components = [x for x in self.component_re.split(vstring) if x and x != '.']
+        for i, obj in enumerate(components):
+            try:
+                components[i] = int(obj)
+            except ValueError:
+                pass
+
+        self.version = components
+
+    def __str__(self):
+        return self.vstring
+
+    def __repr__(self):
+        return "LooseVersion ('%s')" % str(self)
+
+    def _cmp(self, other):
+        if isinstance(other, str):
+            other = LooseVersion(other)
+
+        if self.version == other.version:
+            return 0
+        if self.version < other.version:
+            return -1
+        if self.version > other.version:
+            return 1
+
+
+# end class LooseVersion
diff --git a/azurelinuxagent/ga/exthandlers.py b/azurelinuxagent/ga/exthandlers.py
index 403579df..564128fa 100644
--- a/azurelinuxagent/ga/exthandlers.py
+++ b/azurelinuxagent/ga/exthandlers.py
@@ -27,7 +27,7 @@ import stat
 import tempfile
 import time
 import zipfile
-from distutils.version import LooseVersion  # pylint: disable=deprecated-module
+from azurelinuxagent.common.future import LooseVersion as Version
 from collections import defaultdict
 from functools import partial
 
@@ -2250,7 +2250,7 @@ class HandlerManifest(object):
         This is not effective after nov 30th.
         """
         if ExtHandlerInstance.is_azuremonitorlinuxagent(extension_name):
-            if LooseVersion(str_version) < LooseVersion("1.12"):
+            if Version(str_version) < Version("1.12"):
                 test_man = {
                     "resourceLimits": {
                         "services": [
diff --git a/azurelinuxagent/pa/deprovision/factory.py b/azurelinuxagent/pa/deprovision/factory.py
index 24b2e5b8..321c982c 100644
--- a/azurelinuxagent/pa/deprovision/factory.py
+++ b/azurelinuxagent/pa/deprovision/factory.py
@@ -15,7 +15,7 @@
 # Requires Python 2.6+ and Openssl 1.0+
 #
 
-from distutils.version import LooseVersion as Version  # pylint: disable=no-name-in-module, import-error, deprecated-module
+from azurelinuxagent.common.future import LooseVersion as Version
 
 from azurelinuxagent.common.version import DISTRO_NAME, DISTRO_VERSION, DISTRO_FULL_NAME
 from .arch import ArchDeprovisionHandler
diff --git a/azurelinuxagent/pa/rdma/factory.py b/azurelinuxagent/pa/rdma/factory.py
index 3e8d152c..ac0dd763 100644
--- a/azurelinuxagent/pa/rdma/factory.py
+++ b/azurelinuxagent/pa/rdma/factory.py
@@ -15,7 +15,7 @@
 # Requires Python 2.6+ and Openssl 1.0+
 #
 
-from distutils.version import LooseVersion as Version  # pylint: disable=no-name-in-module, import-error, deprecated-module
+from azurelinuxagent.common.future import LooseVersion as Version
 import azurelinuxagent.common.logger as logger
 from azurelinuxagent.pa.rdma.rdma import RDMAHandler
 from azurelinuxagent.common.version import DISTRO_FULL_NAME, DISTRO_VERSION
diff --git a/azurelinuxagent/pa/rdma/suse.py b/azurelinuxagent/pa/rdma/suse.py
index e4541b60..4de6cf95 100644
--- a/azurelinuxagent/pa/rdma/suse.py
+++ b/azurelinuxagent/pa/rdma/suse.py
@@ -24,7 +24,7 @@ import azurelinuxagent.common.utils.shellutil as shellutil
 from azurelinuxagent.pa.rdma.rdma import RDMAHandler
 from azurelinuxagent.common.version import DISTRO_VERSION
 
-from distutils.version import LooseVersion as Version  # pylint: disable=deprecated-module
+from azurelinuxagent.common.future import LooseVersion as Version
 
 
 class SUSERDMAHandler(RDMAHandler):


Test patch:
diff --git a/tests/common/utils/test_flexible_version.py b/tests/common/utils/test_flexible_version.py
index 7463f4f2..89b827bb 100644
--- a/tests/common/utils/test_flexible_version.py
+++ b/tests/common/utils/test_flexible_version.py
@@ -1,9 +1,9 @@
-import random  # pylint: disable=unused-import
 import re
 import unittest
 
 from azurelinuxagent.common.utils.flexible_version import FlexibleVersion
 
+
 class TestFlexibleVersion(unittest.TestCase):
 
     def setUp(self):
diff --git a/tests/common/utils/test_text_util.py b/tests/common/utils/test_text_util.py
index 5029cfb9..8378ddfa 100644
--- a/tests/common/utils/test_text_util.py
+++ b/tests/common/utils/test_text_util.py
@@ -18,7 +18,7 @@
 import hashlib
 import os
 import unittest
-from distutils.version import LooseVersion as Version  # pylint: disable=no-name-in-module,import-error
+from azurelinuxagent.common.future import LooseVersion as Version
 
 import azurelinuxagent.common.utils.textutil as textutil
 from azurelinuxagent.common.future import ustr