From: Michael Jeanson <mjeanson@efficios.com>
Date: Tue, 25 Aug 2015 23:06:14 +0000 (-0400)
Subject: Added script to extract linux stable kernel versions from git
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=95066f76ff883cabf703b8bc5a52066dcac387a4;p=lttng-ci.git

Added script to extract linux stable kernel versions from git
---

diff --git a/automation/kernel-seed.py b/automation/kernel-seed.py
new file mode 100644
index 0000000..632b015
--- /dev/null
+++ b/automation/kernel-seed.py
@@ -0,0 +1,182 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2015 - Michael Jeanson <mjeanson@efficios.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+""" This script is used to  """
+
+import os
+import re
+from distutils.version import Version
+from git import Repo
+import yaml
+
+
+class KernelVersion(Version):
+    """ Kernel version class """
+
+    re26 = re.compile(r'^(2\.\d+) \. (\d+) (\. (\d+))? (\-rc(\d+))?$',
+                      re.VERBOSE)
+    re30 = re.compile(r'^(\d+) \. (\d+) (\. (\d+))? (\-rc(\d+))?$', re.VERBOSE)
+
+
+    def __init__(self, vstring=None):
+        self._rc = None
+        self._version = None
+        if vstring:
+            self.parse(vstring)
+
+
+    def parse(self, vstring):
+        """ Parse version string """
+
+        self._vstring = vstring
+
+        if self._vstring.startswith("2"):
+            match = self.re26.match(self._vstring)
+        else:
+            match = self.re30.match(self._vstring)
+
+        if not match:
+            raise ValueError("invalid version number '%s'" % self._vstring)
+
+        (major, minor, patch, rc_num) = match.group(1, 2, 4, 6)
+
+        major = int(float(major) * 10)
+
+        if patch:
+            self._version = tuple(map(int, [major, minor, patch]))
+        else:
+            self._version = tuple(map(int, [major, minor])) + (0,)
+
+        if rc_num:
+            self._rc = int(rc_num)
+        else:
+            self._rc = None
+
+
+    def isrc(self):
+        """ Is this version an RC """
+        return self._rc is not None
+
+
+    def __str__(self):
+        return self._vstring
+
+
+    def __repr__(self):
+        return "KernelVersion ('%s')" % str(self)
+
+
+    def _cmp(self, other):
+        if isinstance(other, str):
+            other = KernelVersion(other)
+
+        if self._version != other._version:
+            # numeric versions don't match
+            # prerelease stuff doesn't matter
+            if self._version < other._version:
+                return -1
+            else:
+                return 1
+
+        # have to compare rc
+        # case 1: neither has rc; they're equal
+        # case 2: self has rc, other doesn't; other is greater
+        # case 3: self doesn't have rc, other does: self is greater
+        # case 4: both have rc: must compare them!
+
+        if (not self._rc and not other._rc):
+            return 0
+        elif (self._rc and not other._rc):
+            return -1
+        elif (not self._rc and other._rc):
+            return 1
+        elif (self._rc and other._rc):
+            if self._rc == other._rc:
+                return 0
+            elif self._rc < other._rc:
+                return -1
+            else:
+                return 1
+        else:
+            assert False, "never get here"
+
+
+
+
+KERNCUTOFF = KernelVersion("2.6.36")
+
+LINUX_GIT = "git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git"
+LINUX_PATH = "/home/mjeanson/tmp/toto/"
+
+
+
+
+def main():
+    """ Main """
+
+    versions = []
+
+    # Open or create the local repository
+    if os.path.isdir(LINUX_PATH):
+        linux_repo = Repo(LINUX_PATH)
+    else:
+        linux_repo = Repo.clone_from(LINUX_GIT, LINUX_PATH)
+
+    # Pull the latest
+    linux_repo.remote().pull()
+
+    # First get all valid versions
+    for tag in linux_repo.tags:
+        try:
+            version = KernelVersion(tag.name.lstrip('v'))
+
+            # Add only those who are superior to the cutoff version
+            if version >= KERNCUTOFF:
+                versions.append(version)
+        except ValueError:
+            #print(tag.name)
+            continue
+
+    # Sort the list by version order
+    versions.sort()
+
+    # Keep only one rc if it's the latest version
+    last = True
+    for version in reversed(versions):
+        if version.isrc() and not last:
+            versions.remove(version)
+        last = False
+
+    #for version in versions:
+    #    print(version)
+
+    # Build yaml object
+    yversions = []
+
+    for version in versions:
+        yversions.append(version.__str__())
+
+    print(yaml.dump(yversions, default_flow_style=False))
+
+
+
+
+if __name__ == "__main__":
+    main()
+
+# EOF