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_knownchange
  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.next_lock = threading.Condition()
 132         self.die = False
 133
 134     def plsDie(self):
 135         self.die = True
 136         self.next_lock.notify()
 137
 138     def enqueue(self, next):
 139         self.next_lock.acquire()
 140         while self.next_in_line:
 141             if self.die:
 142                 return
 143             self.next_lock.wait()
 144
 145         assert( not self.next_in_line )
 146         self.next_in_line = next
 147         self.next_lock.notify()
 148         self.next_lock.release()
 149
 150     def dequeue(self):
 151         self.next_lock.acquire()
 152         while not self.next_in_line:
 153             if self.die:
 154                 return
 155             self.next_lock.wait()
 156
 157         result = self.next_in_line
 158
 159         self.next_in_line = None
 160         self.next_lock.notify()
 161         self.next_lock.release()
 162
 163         if isinstance(result, EndOfChanges):
 164             return None
 165
 166         return result
 167
 168 class ChangesToImport(object):
 169     """A changes file to be enqueued to be processed"""
 170     def __init__(self, checkdir, changesfile, count):
 171         self.dirpath = checkdir
 172         self.changesfile = changesfile
 173         self.count = count
 174
 175     def __str__(self):
 176         return "#%d: %s in %s" % (self.count, self.changesfile, self.dirpath)
 177
 178 class ChangesGenerator(threading.Thread):
 179     """enqueues changes files to be imported"""
 180     def __init__(self, parent, queue):
 181         threading.Thread.__init__(self)
 182         self.queue = queue
 183         self.session = DBConn().session()
 184         self.parent = parent
 185         self.die = False
 186
 187     def plsDie(self):
 188         self.die = True
 189
 190     def run(self):
 191         cnf = Config()
 192         count = 1
 193         for directory in [ "Accepted", "Byhand", "Done", "New", "ProposedUpdates", "OldProposedUpdates" ]:
 194             checkdir = cnf["Dir::Queue::%s" % (directory) ]
 195             if os.path.exists(checkdir):
 196                 print "Looking into %s" % (checkdir)
 197
 198                 for dirpath, dirnames, filenames in os.walk(checkdir, topdown=False):
 199                     if not filenames:
 200                         # Empty directory (or only subdirectories), next
 201                         continue
 202
 203                     for changesfile in filenames:
 204                         try:
 205                             if not changesfile.endswith(".changes"):
 206                                 # Only interested in changes files.
 207                                 continue
 208                             count += 1
 209
 210                             if not get_knownchange(changesfile, self.session):
 211                                 to_import = ChangesToImport(dirpath, changesfile, count)
 212                                 if self.die:
 213                                     return
 214                                 self.queue.enqueue(to_import)
 215                         except KeyboardInterrupt:
 216                             print("got Ctrl-c in enqueue thread.  terminating")
 217                             self.parent.plsDie()
 218                             sys.exit(1)
 219
 220         self.queue.enqueue(EndOfChanges())
 221
 222 class ImportThread(threading.Thread):
 223     def __init__(self, parent, queue):
 224         threading.Thread.__init__(self)
 225         self.queue = queue
 226         self.session = DBConn().session()
 227         self.parent = parent
 228         self.die = False
 229
 230     def plsDie(self):
 231         self.die = True
 232
 233     def run(self):
 234         while True:
 235             try:
 236                 if self.die:
 237                     return
 238                 to_import = self.queue.dequeue()
 239                 if not to_import:
 240                     return
 241
 242                 print( "Directory %s, file %7d, (%s)" % (to_import.dirpath[-10:], to_import.count, to_import.changesfile) )
 243
 244                 changes = Changes()
 245                 changes.changes_file = to_import.changesfile
 246                 changesfile = os.path.join(to_import.dirpath, to_import.changesfile)
 247                 changes.changes = parse_changes(changesfile, signing_rules=-1)
 248                 changes.changes["fingerprint"] = check_signature(changesfile)
 249                 changes.add_known_changes(to_import.dirpath, self.session)
 250                 self.session.commit()
 251
 252             except InvalidDscError, line:
 253                 warn("syntax error in .dsc file '%s', line %s." % (f, line))
 254
 255             except ChangesUnicodeError:
 256                 warn("found invalid changes file, not properly utf-8 encoded")
 257
 258
 259             except KeyboardInterrupt:
 260                 print("Caught C-c; on ImportThread. terminating.")
 261                 self.parent.plsDie()
 262                 sys.exit(1)
 263             except:
 264                 traceback.print_exc()
 265                 self.parent.plsDie()
 266                 sys.exit(1)
 267
 268 class ImportKnownChanges(object):
 269     def __init__(self,num_threads):
 270         self.queue = OneAtATime()
 271         self.threads = [ ChangesGenerator(self,self.queue) ]
 272
 273         for i in range(num_threads):
 274             self.threads.append( ImportThread(self,self.queue) )
 275
 276         try:
 277             for thread in self.threads:
 278                 thread.start()
 279
 280         except KeyboardInterrupt:
 281             print("Caught C-c; terminating.")
 282             utils.warn("Caught C-c; terminating.")
 283             self.plsDie()
 284
 285     def plsDie(self):
 286         traceback.print_stack90
 287         for thread in self.threads:
 288             print( "STU: before ask %s to die" % thread )
 289             thread.plsDie()
 290             print( "STU: after ask %s to die" % thread )
 291
 292         self.threads=[]
 293         sys.exit(1)
 294
 295
 296 def main():
 297     cnf = Config()
 298
 299     arguments = [('h',"help", "%s::%s" % (options_prefix,"Help")),
 300                  ('j',"concurrency", "%s::%s" % (options_prefix,"Concurrency"),"HasArg"),
 301                  ('q',"quiet", "%s::%s" % (options_prefix,"Quiet")),
 302                  ('v',"verbose", "%s::%s" % (options_prefix,"Verbose")),
 303                 ]
 304
 305     args = apt_pkg.ParseCommandLine(cnf.Cnf, arguments,sys.argv)
 306
 307     num_threads = 1
 308
 309     if len(args) > 0:
 310         usage()
 311
 312     if cnf.has_key("%s::%s" % (options_prefix,"Help")):
 313         usage()
 314
 315     level=logging.INFO
 316     if cnf.has_key("%s::%s" % (options_prefix,"Quiet")):
 317         level=logging.ERROR
 318
 319     elif cnf.has_key("%s::%s" % (options_prefix,"Verbose")):
 320         level=logging.DEBUG
 321
 322
 323     logging.basicConfig( level=level,
 324                          format='%(asctime)s %(levelname)s %(message)s',
 325                          stream = sys.stderr )
 326
 327     if Config().has_key( "%s::%s" %(options_prefix,"Concurrency")):
 328         num_threads = int(Config()[ "%s::%s" %(options_prefix,"Concurrency")])
 329
 330     ImportKnownChanges(num_threads)
 331
 332
 333
 334
 335 if __name__ == '__main__':
 336     main()