notes.py

   1 import os
   2 import sys
   3 import time
   4 import re
   5 from collections import defaultdict
   6 from sqlalchemy.orm import join
   7
   8 import db
   9 from git import git
  10
  11 NOTES_INDEX = '.git/git-notes-index'
  12 notes_env = {
  13     'GIT_INDEX_FILE': NOTES_INDEX,
  14 }
  15 NOTES_REF = 'refs/heads/mailnotes'
  16
  17 def write_notes(commit_sha1, notes):
  18     blob_sha1 = git('hash-object', '-w', '--stdin', input=notes)[0]
  19     git('update-index', '--add', '--cacheinfo', '0644', blob_sha1, commit_sha1, env=notes_env)
  20
  21 def finalize_notes():
  22     previous, ret = git('rev-parse', NOTES_REF)
  23     if ret != 0:
  24         args = []
  25         previous_arg = []
  26     else:
  27         args = ['-p', previous.strip()]
  28         previous_arg = [previous.strip()]
  29     tree_sha1 = git('write-tree', env=notes_env)[0].strip()
  30     head_sha1 = git('commit-tree', tree_sha1, *args,
  31                     input='Mass annotation by notes.py')[0].strip()
  32     git('update-ref', '-m', 'Mass annotation by notes.py',
  33         NOTES_REF, head_sha1, *previous_arg)
  34
  35 def compute_notes(session, commit, mail):
  36     notes = []
  37     notes.append('Mail-From: %s\n' % mail.author)
  38     notes.append('Message-Id: %s\n' % mail.message_id)
  39     notes.append('Posted-Date: %s\n'
  40                  % time.strftime("%c", time.localtime(mail.post_date)))
  41     if mail.in_reply_to:
  42         notes.append('In-Reply-To: %s\n' % mail.in_reply_to)
  43     if mail.references:
  44         notes.append('References:\n')
  45         for r in mail.references:
  46             notes.append('\t%s\n' % r.message_id)
  47     if len(mail.patch)>0 and mail.patch[0].extra_notes:
  48         notes.append('Extra-notes:\n')
  49         for line in str(mail.patch[0].extra_notes).splitlines():
  50             notes.append('\t%s\n' % line)
  51     return notes
  52
  53 _merge_re = re.compile("^([a-f0-9]{40}) Merge branch '([^']+)'")
  54 def _redo_pu(session, notes):
  55     pu_ref = git('rev-parse', 'origin/pu')[0].strip()
  56     pu_topic = session.query(db.Topic).filter(db.Topic.name == 'pu').first()
  57     if pu_topic:
  58         notes[pu_ref].append(pu_topic.cooking_notes)
  59     for line in git('log', '--first-parent', '--pretty=tformat:%H %s',
  60                     'origin/next..origin/pu', ret_pipe=True):
  61         m = _merge_re.match(line)
  62         if not m:
  63             continue
  64         sha1 = m.group(1)
  65         branch = m.group(2)
  66         t = session.query(db.Topic).filter(db.Topic.name == branch).first()
  67         if t:
  68             notes[sha1].append(t.cooking_notes)
  69
  70 def _redo_patches(session, notes):
  71     for cmt, mail in (session.query(db.Commit, db.Mail)
  72                       .select_from(join(db.Mail, db.Commit,
  73                                         db.Mail.patch_id==db.Commit.patch_id))
  74                       .filter(db.Commit.upstream==True)
  75                       .filter(db.Mail.has_patch==True)):
  76         nts = compute_notes(session, cmt, mail)
  77         if not nts:
  78             continue
  79         if notes[cmt.sha1]:
  80             notes[cmt.sha1].append('\n')
  81         notes[cmt.sha1].extend(nts)
  82         sys.stdout.write('\r%6d' % count)
  83         sys.stdout.flush()
  84         count = count + 1
  85     count = 0
  86     sys.stdout.write('\n')
  87
  88 def _redo_all():
  89     session = db.Session()
  90     count = 0
  91     notes = defaultdict(list)
  92     _redo_patches(session, notes)
  93     _redo_pu(session, notes)
  94     os.unlink(NOTES_INDEX)
  95     for cmt, nts in notes.iteritems():
  96         sys.stdout.write('\r%6d' % count)
  97         sys.stdout.flush()
  98         write_notes(cmt, ''.join(nts))
  99         count = count + 1
 100     sys.stdout.write('\n')
 101     finalize_notes()
 102
 103 if __name__ == '__main__':
 104     if len(sys.argv) > 1:
 105         session = db.Session()
 106         cmt = session.query(db.Commit).filter(db.Commit.sha1==sys.argv[1]).one()
 107         print compute_notes(session, cmt)
 108     else:
 109         _redo_all()