[GEDI] [RFC v5 026/126] python: add commit-per-subsystem.py
Vladimir Sementsov-Ogievskiy
vsementsov at virtuozzo.com
Fri Oct 11 16:04:12 UTC 2019
Add script to automatically commit tree-wide changes per-subsystem.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov at virtuozzo.com>
---
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python/commit-per-subsystem.py | 204 +++++++++++++++++++++++++++++++++
1 file changed, 204 insertions(+)
create mode 100755 python/commit-per-subsystem.py
diff --git a/python/commit-per-subsystem.py b/python/commit-per-subsystem.py
new file mode 100755
index 0000000000..2ccf84cb15
--- /dev/null
+++ b/python/commit-per-subsystem.py
@@ -0,0 +1,204 @@
+#!/usr/bin/env python3
+#
+# Copyright (c) 2019 Virtuozzo International GmbH
+#
+# 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 2 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/>.
+#
+
+import subprocess
+import sys
+import os
+import glob
+
+
+def git_add(pattern):
+ subprocess.run(['git', 'add', pattern])
+
+
+def git_commit(msg):
+ subprocess.run(['git', 'commit', '-m', msg], capture_output=True)
+
+
+def git_changed_files():
+ ret = subprocess.check_output(['git', 'diff', '--name-only'], encoding='utf-8').split('\n')
+ if ret[-1] == '':
+ del ret[-1]
+ return ret
+
+
+maintainers = sys.argv[1]
+message = sys.argv[2].strip()
+
+subsystem = None
+
+remap = {
+ 'Block layer core': 'block',
+ 'Block Jobs': 'block',
+ 'Dirty Bitmaps': 'block',
+ 'Block QAPI, monitor, command line': 'block',
+ 'Block I/O path': 'block',
+ 'Throttling infrastructure': 'block',
+ 'Architecture support': 's390x',
+ 'Guest CPU Cores (KVM)': 'kvm',
+ 'Guest CPU Cores (Xen)': 'xen',
+ 'Guest CPU cores (TCG)': 'tcg',
+ 'Network Block Device (NBD)': 'nbd',
+ 'Parallel NOR Flash devices': 'pflash',
+ 'Firmware configuration (fw_cfg)': 'fw_cfg',
+ 'Block SCSI subsystem': 'scsi',
+ 'Network device backends': 'net',
+ 'Netmap network backend': 'net',
+ 'Host Memory Backends': 'hostmem',
+ 'Cryptodev Backends': 'cryptodev',
+ 'QEMU Guest Agent': 'qga',
+ 'COLO Framework': 'colo',
+ 'Command line option argument parsing': 'cmdline',
+ 'Character device backends': 'chardev'
+}
+
+
+class Maintainers:
+ def add(self, subsystem, path, mapper, mapper_name, glob_count=1):
+ if subsystem in remap:
+ subsystem = remap[subsystem]
+ if subsystem not in self.subsystems:
+ self.subsystems.append(subsystem)
+
+ if path[-1] == '/':
+ path = path[:-1]
+
+ if path in mapper:
+ if mapper[path][1] == glob_count:
+ print('Warning: "{}" both in "{}" and "{}" in {} mapper with '
+ 'same glob-count={}. {} ignored for this path.'.format(
+ path, mapper[path][0], subsystem, mapper_name, glob_count,
+ subsystem))
+ return
+ if mapper[path][1] < glob_count:
+ # silently ignore worse match
+ return
+
+ mapper[path] = (subsystem, glob_count)
+
+ def __init__(self, file_name):
+ self.map_file = {}
+ self.map_glob_file = {}
+ self.map_dir = {}
+ self.map_glob_dir = {}
+ self.map_unmaintained_dir = {
+ 'python': ('python', 1),
+ 'hw/misc': ('misc', 1)
+ }
+ self.subsystems = ['python', 'misc']
+ subsystem = None
+
+ with open(file_name) as f:
+ mode2 = False
+ prevline = ''
+ for line in f:
+ line = line.rstrip()
+ if not line:
+ continue
+ if len(line) >= 2 and line[1] == ':':
+ if line[0] == 'F':
+ fname = line[3:]
+ if fname in ['*', '*/']:
+ continue
+ if os.path.isfile(fname):
+ self.add(subsystem, fname, self.map_file, 'file')
+ elif os.path.isdir(fname):
+ self.add(subsystem, fname, self.map_dir, 'dir')
+ else:
+ paths = glob.glob(fname)
+ if not paths:
+ print('Warning: nothing corresponds to "{}"'.format(fname))
+ continue
+
+ n = len(paths)
+ for f in paths:
+ if os.path.isfile(f):
+ self.add(subsystem, f, self.map_glob_file, 'glob-file', n)
+ else:
+ assert os.path.isdir(f)
+ self.add(subsystem, f, self.map_glob_dir, 'glob-dir', n)
+ elif line[:3] == '---':
+ subsystem = prevline
+ if subsystem == 'Devices':
+ mode2 = True
+ elif mode2:
+ subsystem = line
+ prevline = line
+
+ def find_in_map_dir(self, file_name, mapper):
+ while file_name != '' and file_name not in mapper:
+ file_name = os.path.dirname(file_name)
+
+ return None if file_name == '' else mapper[file_name][0]
+
+ def find_in_map_file(self, file_name, mapper):
+ if file_name in mapper:
+ return mapper[file_name][0]
+
+ def find_subsystem(self, file_name):
+ s = self.find_in_map_file(file_name, self.map_file)
+ if s is not None:
+ return s
+
+ s = self.find_in_map_file(file_name, self.map_glob_file)
+ if s is not None:
+ return s
+
+ s = self.find_in_map_dir(file_name, self.map_dir)
+ if s is not None:
+ return s
+
+ s = self.find_in_map_dir(file_name, self.map_glob_dir)
+ if s is not None:
+ return s
+
+ s = self.find_in_map_dir(file_name, self.map_unmaintained_dir)
+ if s is not None:
+ return s
+
+ self.subsystems.append(file_name)
+ return file_name
+
+
+def commit(subsystem):
+ msg = subsystem
+ if msg in remap:
+ msg = remap[msg]
+ msg += ': ' + message
+ git_commit(msg)
+
+mnt = Maintainers(maintainers)
+res = {}
+for f in git_changed_files():
+ s = mnt.find_subsystem(f)
+ if s in res:
+ res[s].append(f)
+ else:
+ res[s] = [f]
+
+for s in mnt.subsystems:
+ if s in res:
+ print(s)
+ for f in res[s]:
+ print(' ', f)
+
+for s in mnt.subsystems:
+ if s in res:
+ for f in res[s]:
+ git_add(f)
+ commit(s)
--
2.21.0
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