dak/import_known_changes.py

   1 #!/usr/bin/env python
   2 # coding=utf8
   3
   4 """
   5 Import known_changes files
   6
   7 @contact: Debian FTP Master <ftpmaster@debian.org>
   8 @copyright: 2009  Mike O'Connor <stew@debian.org>
   9 @license: GNU General Public License version 2 or later
  10 """
  11
  12 # This program is free software; you can redistribute it and/or modify
  13 # it under the terms of the GNU General Public License as published by
  14 # the Free Software Foundation; either version 2 of the License, or
  15 # (at your option) any later version.
  16
  17 # This program is distributed in the hope that it will be useful,
  18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 # GNU General Public License for more details.
  21
  22 # You should have received a copy of the GNU General Public License
  23 # along with this program; if not, write to the Free Software
  24 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  25
  26 ################################################################################
  27
  28
  29 ################################################################################
  30
  31 import sys
  32 import os
  33 import logging
  34 import threading
  35 from daklib.dbconn import DBConn, get_dbchange
  36 from daklib.config import Config
  37 import apt_pkg
  38 from daklib.dak_exceptions import DBUpdateError, InvalidDscError, ChangesUnicodeError
  39 from daklib.changes import Changes
  40 from daklib.utils import parse_changes, warn, gpgv_get_status_output, process_gpgv_output
  41 import traceback
  42
  43 # where in dak.conf all of our configuration will be stowed
  44 options_prefix = "KnownChanges"
  45 options_prefix = "%s::Options" % options_prefix
  46
  47 log = logging.getLogger()
  48
  49 ################################################################################
  50
  51
  52 def usage (exit_code=0):
  53     print """Usage: dak import-known-changes [options]
  54
  55 OPTIONS
  56      -j n
  57         run with n threads concurrently
  58
  59      -v, --verbose
  60         show verbose information messages
  61
  62      -q, --quiet
  63         supress all output but errors
  64
  65 """
  66     sys.exit(exit_code)
  67
  68 def check_signature (sig_filename, data_filename=""):
  69     fingerprint = None
  70
  71     keyrings = [
  72         "/home/joerg/keyring/keyrings/debian-keyring.gpg",
  73         "/home/joerg/keyring/keyrings/debian-keyring.pgp",
  74         "/home/joerg/keyring/keyrings/debian-maintainers.gpg",
  75         "/home/joerg/keyring/keyrings/debian-role-keys.gpg",
  76         "/home/joerg/keyring/keyrings/emeritus-keyring.pgp",
  77         "/home/joerg/keyring/keyrings/emeritus-keyring.gpg",
  78         "/home/joerg/keyring/keyrings/removed-keys.gpg",
  79         "/home/joerg/keyring/keyrings/removed-keys.pgp"
  80         ]
  81
  82     keyringargs = " ".join(["--keyring %s" % x for x in keyrings ])
  83
  84     # Build the command line
  85     status_read, status_write = os.pipe()
  86     cmd = "gpgv --status-fd %s %s %s" % (status_write, keyringargs, sig_filename)
  87
  88     # Invoke gpgv on the file
  89     (output, status, exit_status) = gpgv_get_status_output(cmd, status_read, status_write)
  90
  91     # Process the status-fd output
  92     (keywords, internal_error) = process_gpgv_output(status)
  93
  94     # If we failed to parse the status-fd output, let's just whine and bail now
  95     if internal_error:
  96         warn("Couldn't parse signature")
  97         return None
  98
  99     # usually one would check for bad things here. We, however, do not care.
 100
 101     # Next check gpgv exited with a zero return code
 102     if exit_status:
 103         warn("Couldn't parse signature")
 104         return None
 105
 106     # Sanity check the good stuff we expect
 107     if not keywords.has_key("VALIDSIG"):
 108         warn("Couldn't parse signature")
 109     else:
 110         args = keywords["VALIDSIG"]
 111         if len(args) < 1:
 112             warn("Couldn't parse signature")
 113         else:
 114             fingerprint = args[0]
 115
 116     return fingerprint
 117
 118
 119 class EndOfChanges(object):
 120     """something enqueued to signify the last change"""
 121     pass
 122
 123
 124 class OneAtATime(object):
 125     """
 126     a one space queue which sits between multiple possible producers
 127     and multiple possible consumers
 128     """
 129     def __init__(self):
 130         self.next_in_line = None
 131         self.read_lock = threading.Condition()
 132         self.write_lock = threading.Condition()
 133         self.die = False
 134
 135     def plsDie(self):
 136         self.die = True
 137         self.write_lock.acquire()
 138         self.write_lock.notifyAll()
 139         self.write_lock.release()
 140
 141         self.read_lock.acquire()
 142         self.read_lock.notifyAll()
 143         self.read_lock.release()
 144
 145     def enqueue(self, next):
 146         self.write_lock.acquire()
 147         while self.next_in_line:
 148             if self.die:
 149                 return
 150             self.write_lock.wait()
 151
 152         assert( not self.next_in_line )
 153         self.next_in_line = next
 154         self.write_lock.release()
 155         self.read_lock.acquire()
 156         self.read_lock.notify()
 157         self.read_lock.release()
 158
 159     def dequeue(self):
 160         self.read_lock.acquire()
 161         while not self.next_in_line:
 162             if self.die:
 163                 return
 164             self.read_lock.wait()
 165
 166         result = self.next_in_line
 167
 168         self.next_in_line = None
 169         self.read_lock.release()
 170         self.write_lock.acquire()
 171         self.write_lock.notify()
 172         self.write_lock.release()
 173
 174         if isinstance(result, EndOfChanges):
 175             return None
 176
 177         return result
 178
 179 class ChangesToImport(object):
 180     """A changes file to be enqueued to be processed"""
 181     def __init__(self, checkdir, changesfile, count):
 182         self.dirpath = checkdir
 183         self.changesfile = changesfile
 184         self.count = count
 185
 186     def __str__(self):
 187         return "#%d: %s in %s" % (self.count, self.changesfile, self.dirpath)
 188
 189 class ChangesGenerator(threading.Thread):
 190     """enqueues changes files to be imported"""
 191     def __init__(self, parent, queue):
 192         threading.Thread.__init__(self)
 193         self.queue = queue
 194         self.session = DBConn().session()
 195         self.parent = parent
 196         self.die = False
 197
 198     def plsDie(self):
 199         self.die = True
 200
 201     def run(self):
 202         cnf = Config()
 203         count = 1
 204         for directory in [ "Byhand", "Done", "New", "ProposedUpdates", "OldProposedUpdates" ]:
 205             checkdir = cnf["Dir::Queue::%s" % (directory) ]
 206             if os.path.exists(checkdir):
 207                 print "Looking into %s" % (checkdir)
 208
 209                 for dirpath, dirnames, filenames in os.walk(checkdir, topdown=True):
 210                     if not filenames:
 211                         # Empty directory (or only subdirectories), next
 212                         continue
 213
 214                     for changesfile in filenames:
 215                         try:
 216                             if not changesfile.endswith(".changes"):
 217                                 # Only interested in changes files.
 218                                 continue
 219                             count += 1
 220
 221                             if not get_dbchange(changesfile, self.session):
 222                                 to_import = ChangesToImport(dirpath, changesfile, count)
 223                                 if self.die:
 224                                     return
 225                                 self.queue.enqueue(to_import)
 226                         except KeyboardInterrupt:
 227                             print("got Ctrl-c in enqueue thread.  terminating")
 228                             self.parent.plsDie()
 229                             sys.exit(1)
 230
 231         self.queue.enqueue(EndOfChanges())
 232
 233 class ImportThread(threading.Thread):
 234     def __init__(self, parent, queue):
 235         threading.Thread.__init__(self)
 236         self.queue = queue
 237         self.session = DBConn().session()
 238         self.parent = parent
 239         self.die = False
 240
 241     def plsDie(self):
 242         self.die = True
 243
 244     def run(self):
 245         while True:
 246             try:
 247                 if self.die:
 248                     return
 249                 to_import = self.queue.dequeue()
 250                 if not to_import:
 251                     return
 252
 253                 print( "Directory %s, file %7d, (%s)" % (to_import.dirpath[-10:], to_import.count, to_import.changesfile) )
 254
 255                 changes = Changes()
 256                 changes.changes_file = to_import.changesfile
 257                 changesfile = os.path.join(to_import.dirpath, to_import.changesfile)
 258                 changes.changes = parse_changes(changesfile, signing_rules=-1)
 259                 changes.changes["fingerprint"] = check_signature(changesfile)
 260                 changes.add_known_changes(to_import.dirpath, session=self.session)
 261                 self.session.commit()
 262
 263             except InvalidDscError, line:
 264                 warn("syntax error in .dsc file '%s', line %s." % (f, line))
 265
 266             except ChangesUnicodeError:
 267                 warn("found invalid changes file, not properly utf-8 encoded")
 268
 269             except KeyboardInterrupt:
 270                 print("Caught C-c; on ImportThread. terminating.")
 271                 self.parent.plsDie()
 272                 sys.exit(1)
 273
 274             except:
 275                 self.parent.plsDie()
 276                 sys.exit(1)
 277
 278 class ImportKnownChanges(object):
 279     def __init__(self,num_threads):
 280         self.queue = OneAtATime()
 281         self.threads = [ ChangesGenerator(self,self.queue) ]
 282
 283         for i in range(num_threads):
 284             self.threads.append( ImportThread(self,self.queue) )
 285
 286         try:
 287             for thread in self.threads:
 288                 thread.start()
 289
 290         except KeyboardInterrupt:
 291             print("Caught C-c; terminating.")
 292             utils.warn("Caught C-c; terminating.")
 293             self.plsDie()
 294
 295     def plsDie(self):
 296         traceback.print_stack90
 297         for thread in self.threads:
 298             print( "STU: before ask %s to die" % thread )
 299             thread.plsDie()
 300             print( "STU: after ask %s to die" % thread )
 301
 302         self.threads=[]
 303         sys.exit(1)
 304
 305
 306 def main():
 307     cnf = Config()
 308
 309     arguments = [('h',"help", "%s::%s" % (options_prefix,"Help")),
 310                  ('j',"concurrency", "%s::%s" % (options_prefix,"Concurrency"),"HasArg"),
 311                  ('q',"quiet", "%s::%s" % (options_prefix,"Quiet")),
 312                  ('v',"verbose", "%s::%s" % (options_prefix,"Verbose")),
 313                 ]
 314
 315     args = apt_pkg.ParseCommandLine(cnf.Cnf, arguments,sys.argv)
 316
 317     num_threads = 1
 318
 319     if len(args) > 0:
 320         usage()
 321
 322     if cnf.has_key("%s::%s" % (options_prefix,"Help")):
 323         usage()
 324
 325     level=logging.INFO
 326     if cnf.has_key("%s::%s" % (options_prefix,"Quiet")):
 327         level=logging.ERROR
 328
 329     elif cnf.has_key("%s::%s" % (options_prefix,"Verbose")):
 330         level=logging.DEBUG
 331
 332
 333     logging.basicConfig( level=level,
 334                          format='%(asctime)s %(levelname)s %(message)s',
 335                          stream = sys.stderr )
 336
 337     if Config().has_key( "%s::%s" %(options_prefix,"Concurrency")):
 338         num_threads = int(Config()[ "%s::%s" %(options_prefix,"Concurrency")])
 339
 340     ImportKnownChanges(num_threads)
 341
 342
 343
 344
 345 if __name__ == '__main__':
 346     main()