dak/contents.py

   1 #!/usr/bin/env python
   2 """
   3 Create all the contents files
   4
   5 @contact: Debian FTPMaster <ftpmaster@debian.org>
   6 @copyright: 2008, 2009 Michael Casadevall <mcasadevall@debian.org>
   7 @copyright: 2009 Mike O'Connor <stew@debian.org>
   8 @license: GNU General Public License version 2 or later
   9 """
  10
  11 ################################################################################
  12
  13 # This program is free software; you can redistribute it and/or modify
  14 # it under the terms of the GNU General Public License as published by
  15 # the Free Software Foundation; either version 2 of the License, or
  16 # (at your option) any later version.
  17
  18 # This program is distributed in the hope that it will be useful,
  19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 # GNU General Public License for more details.
  22
  23 # You should have received a copy of the GNU General Public License
  24 # along with this program; if not, write to the Free Software
  25 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  26
  27 ################################################################################
  28
  29 # <Ganneff> there is the idea to slowly replace contents files
  30 # <Ganneff> with a new generation of such files.
  31 # <Ganneff> having more info.
  32
  33 # <Ganneff> of course that wont help for now where we need to generate them :)
  34
  35 ################################################################################
  36
  37 import sys
  38 import os
  39 import logging
  40 import gzip
  41 import threading
  42 import traceback
  43 import Queue
  44 import apt_pkg
  45 import datetime
  46 import traceback
  47 from daklib import utils
  48 from daklib.binary import Binary
  49 from daklib.config import Config
  50 from daklib.dbconn import *
  51
  52 ################################################################################
  53
  54 def usage (exit_code=0):
  55     print """Usage: dak contents [options] command [arguments]
  56
  57 COMMANDS
  58     generate
  59         generate Contents-$arch.gz files
  60
  61     bootstrap_bin
  62         scan the debs in the existing pool and load contents into the bin_contents table
  63
  64     bootstrap
  65         copy data from the bin_contents table into the deb_contents / udeb_contents tables
  66
  67     cruft
  68         remove files/paths which are no longer referenced by a binary
  69
  70 OPTIONS
  71      -h, --help
  72         show this help and exit
  73
  74      -v, --verbose
  75         show verbose information messages
  76
  77      -q, --quiet
  78         supress all output but errors
  79
  80      -s, --suite={stable,testing,unstable,...}
  81         only operate on a single suite
  82 """
  83     sys.exit(exit_code)
  84
  85 ################################################################################
  86
  87 # where in dak.conf all of our configuration will be stowed
  88
  89 options_prefix = "Contents"
  90 options_prefix = "%s::Options" % options_prefix
  91
  92 log = logging.getLogger()
  93
  94 ################################################################################
  95
  96 class EndOfContents(object):
  97     """
  98     A sentry object for the end of the filename stream
  99     """
 100     pass
 101
 102 class OneAtATime(object):
 103     """
 104     a one space queue which sits between multiple possible producers
 105     and multiple possible consumers
 106     """
 107     def __init__(self):
 108         self.next_in_line = None
 109         self.read_lock = threading.Condition()
 110         self.write_lock = threading.Condition()
 111         self.die = False
 112
 113     def enqueue(self, next):
 114         self.write_lock.acquire()
 115         while self.next_in_line:
 116             if self.die:
 117                 return
 118             self.write_lock.wait()
 119
 120         assert( not self.next_in_line )
 121         self.next_in_line = next
 122         self.write_lock.release()
 123         self.read_lock.acquire()
 124         self.read_lock.notify()
 125         self.read_lock.release()
 126
 127     def dequeue(self):
 128         self.read_lock.acquire()
 129         while not self.next_in_line:
 130             if self.die:
 131                 return
 132             self.read_lock.wait()
 133
 134         result = self.next_in_line
 135
 136         self.next_in_line = None
 137         self.read_lock.release()
 138         self.write_lock.acquire()
 139         self.write_lock.notify()
 140         self.write_lock.release()
 141
 142         return result
 143
 144
 145 class ContentsWorkThread(threading.Thread):
 146     """
 147     """
 148     def __init__(self, upstream, downstream):
 149         threading.Thread.__init__(self)
 150         self.upstream = upstream
 151         self.downstream = downstream
 152
 153     def run(self):
 154         while True:
 155             try:
 156                 contents_file = self.upstream.dequeue()
 157                 if isinstance(contents_file,EndOfContents):
 158                     if self.downstream:
 159                         self.downstream.enqueue(contents_file)
 160                     break
 161
 162                 s = datetime.datetime.now()
 163                 print("%s start: %s" % (self,contents_file) )
 164                 self._run(contents_file)
 165                 print("%s finished: %s in %d seconds" % (self, contents_file, (datetime.datetime.now()-s).seconds ))
 166                 if self.downstream:
 167                     self.downstream.enqueue(contents_file)
 168             except:
 169                 traceback.print_exc()
 170
 171 class QueryThread(ContentsWorkThread):
 172     def __init__(self, upstream, downstream):
 173         ContentsWorkThread.__init__(self, upstream, downstream)
 174
 175     def __str__(self):
 176         return "QueryThread"
 177     __repr__ = __str__
 178
 179     def _run(self, contents_file):
 180         contents_file.query()
 181
 182 class IngestThread(ContentsWorkThread):
 183     def __init__(self, upstream, downstream):
 184         ContentsWorkThread.__init__(self, upstream, downstream)
 185
 186     def __str__(self):
 187         return "IngestThread"
 188     __repr__ = __str__
 189
 190     def _run(self, contents_file):
 191         contents_file.ingest()
 192
 193 class SortThread(ContentsWorkThread):
 194     def __init__(self, upstream, downstream):
 195         ContentsWorkThread.__init__(self, upstream, downstream)
 196
 197     def __str__(self):
 198         return "SortThread"
 199     __repr__ = __str__
 200
 201     def _run(self, contents_file):
 202         contents_file.sorted_keys = sorted(contents_file.filenames.keys())
 203
 204 class OutputThread(ContentsWorkThread):
 205     def __init__(self, upstream, downstream):
 206         ContentsWorkThread.__init__(self, upstream, downstream)
 207
 208     def __str__(self):
 209         return "OutputThread"
 210     __repr__ = __str__
 211
 212     def _run(self, contents_file):
 213         contents_file.open_file()
 214         for fname in contents_file.sorted_keys:
 215             contents_file.filehandle.write("%s\t%s\n" % (fname,contents_file.filenames[fname]))
 216         contents_file.sorted_keys = None
 217         contents_file.filenames.clear()
 218
 219 class GzipThread(ContentsWorkThread):
 220     def __init__(self, upstream, downstream):
 221         ContentsWorkThread.__init__(self, upstream, downstream)
 222
 223     def __str__(self):
 224         return "GzipThread"
 225     __repr__ = __str__
 226
 227     def _run(self, contents_file):
 228         os.system("gzip -f %s" % contents_file.filename)
 229
 230 class ContentFile(object):
 231     def __init__(self,
 232                  filename,
 233                  suite_str,
 234                  suite_id):
 235
 236         self.filename = filename
 237         self.filenames = {}
 238         self.sorted_keys = None
 239         self.suite_str = suite_str
 240         self.suite_id = suite_id
 241         self.session = None
 242         self.filehandle = None
 243         self.results = None
 244
 245     def __str__(self):
 246         return self.filename
 247     __repr__ = __str__
 248
 249
 250     def cleanup(self):
 251         self.filenames = None
 252         self.sortedkeys = None
 253         self.filehandle.close()
 254         self.session.close()
 255
 256     def ingest(self):
 257         while True:
 258             r = self.results.fetchone()
 259             if not r:
 260                 break
 261             filename, package = r
 262             self.filenames[filename]=package
 263
 264         self.session.close()
 265
 266     def open_file(self):
 267         """
 268         opens a gzip stream to the contents file
 269         """
 270         filepath = Config()["Contents::Root"] + self.filename
 271         filedir = os.path.dirname(self.filename)
 272         if not os.path.isdir(filedir):
 273             os.makedirs(filedir)
 274         self.filehandle = open(self.filename, "w")
 275         self._write_header()
 276
 277     def _write_header(self):
 278         self._get_header();
 279         self.filehandle.write(ContentFile.header)
 280
 281     header=None
 282
 283     @classmethod
 284     def _get_header(self):
 285         """
 286         Internal method to return the header for Contents.gz files
 287
 288         This is boilerplate which explains the contents of the file and how
 289         it can be used.
 290         """
 291         if not ContentFile.header:
 292             if Config().has_key("Contents::Header"):
 293                 try:
 294                     h = open(os.path.join( Config()["Dir::Templates"],
 295                                            Config()["Contents::Header"] ), "r")
 296                     ContentFile.header = h.read()
 297                     h.close()
 298                 except:
 299                     log.error( "error opening header file: %d\n%s" % (Config()["Contents::Header"],
 300                                                                       traceback.format_exc() ))
 301                     ContentFile.header = None
 302             else:
 303                 ContentFile.header = None
 304
 305         return ContentFile.header
 306
 307
 308 class DebContentFile(ContentFile):
 309     def __init__(self,
 310                  filename,
 311                  suite_str,
 312                  suite_id,
 313                  arch_str,
 314                  arch_id):
 315         ContentFile.__init__(self,
 316                              filename,
 317                              suite_str,
 318                              suite_id )
 319         self.arch_str = arch_str
 320         self.arch_id = arch_id
 321
 322     def query(self):
 323         self.session = DBConn().session();
 324
 325         self.results = self.session.execute("""SELECT filename, comma_separated_list(section || '/' || package)
 326         FROM deb_contents
 327         WHERE ( arch=2 or arch = :arch) AND suite = :suite
 328         """, { 'arch':self.arch_id, 'suite':self.suite_id } )
 329
 330 class UdebContentFile(ContentFile):
 331     def __init__(self,
 332                  filename,
 333                  suite_str,
 334                  suite_id,
 335                  section_name,
 336                  section_id):
 337         ContentFile.__init__(self,
 338                              filename,
 339                              suite_str,
 340                              suite_id )
 341
 342     def query(self):
 343         self.session = DBConn().session();
 344
 345         self.results = self.session.execute("""SELECT filename, comma_separated_list(section || '/' || package)
 346         FROM udeb_contents
 347         WHERE suite = :suite
 348         group by filename
 349         """ , { 'suite': self.suite_id } )
 350
 351 class Contents(object):
 352     """
 353     Class capable of generating Contents-$arch.gz files
 354     """
 355     def __init__(self):
 356         self.header = None
 357
 358     def reject(self, message):
 359         log.error("E: %s" % message)
 360
 361     def cruft(self):
 362         """
 363         remove files/paths from the DB which are no longer referenced
 364         by binaries and clean the temporary table
 365         """
 366         s = DBConn().session()
 367
 368         # clear out all of the temporarily stored content associations
 369         # this should be run only after p-a has run.  after a p-a
 370         # run we should have either accepted or rejected every package
 371         # so there should no longer be anything in the queue
 372         s.query(PendingContentAssociation).delete()
 373
 374         # delete any filenames we are storing which have no binary associated
 375         # with them
 376         cafq = s.query(ContentAssociation.filename_id).distinct()
 377         cfq = s.query(ContentFilename)
 378         cfq = cfq.filter(~ContentFilename.cafilename_id.in_(cafq))
 379         cfq.delete()
 380
 381         # delete any paths we are storing which have no binary associated with
 382         # them
 383         capq = s.query(ContentAssociation.filepath_id).distinct()
 384         cpq = s.query(ContentFilepath)
 385         cpq = cpq.filter(~ContentFilepath.cafilepath_id.in_(capq))
 386         cpq.delete()
 387
 388         s.commit()
 389
 390
 391     def bootstrap_bin(self):
 392         """
 393         scan the existing debs in the pool to populate the bin_contents table
 394         """
 395         pooldir = Config()[ 'Dir::Pool' ]
 396
 397         s = DBConn().session()
 398
 399         for binary in s.query(DBBinary).yield_per(100):
 400             print( "binary: %s" % binary.package )
 401             filename = binary.poolfile.filename
 402              # Check for existing contents
 403             existingq = s.execute( "select 1 from bin_contents where binary_id=:id", {'id':binary.binary_id} );
 404             if existingq.fetchone():
 405                 log.debug( "already imported: %s" % (filename))
 406             else:
 407                 # We don't have existing contents so import them
 408                 log.debug( "scanning: %s" % (filename) )
 409
 410                 debfile = os.path.join(pooldir, filename)
 411                 if os.path.exists(debfile):
 412                     Binary(debfile, self.reject).scan_package(binary.binary_id, True)
 413                 else:
 414                     log.error("missing .deb: %s" % filename)
 415
 416
 417
 418     def bootstrap(self):
 419         """
 420         scan the existing debs in the pool to populate the contents database tables
 421         """
 422         s = DBConn().session()
 423
 424
 425         # get a mapping of all the override types we care about (right now .deb an .udeb)
 426         override_type_map = {};
 427         for override_type in s.query(OverrideType).all():
 428             if override_type.overridetype.endswith('deb' ):
 429                 override_type_map[override_type.overridetype_id] = override_type.overridetype;
 430
 431         for override in s.query(Override).yield_per(100):
 432             if not override_type_map.has_key(override.overridetype_id):
 433                 #this isn't an override we care about
 434                 continue
 435
 436             binaries = s.execute("""SELECT b.id, b.architecture
 437                                     FROM binaries b
 438                                     JOIN bin_associations ba ON ba.bin=b.id
 439                                     WHERE ba.suite=:suite
 440                                     AND b.package=:package""", {'suite':override.suite_id, 'package':override.package})
 441             while True:
 442                 binary = binaries.fetchone()
 443                 if not binary:
 444                     break
 445
 446                 exists = s.execute("SELECT 1 FROM %s_contents WHERE binary_id=:id limit 1" % override_type_map[override.overridetype_id], {'id':binary.id})
 447
 448
 449                 if exists.fetchone():
 450                     print '.',
 451                     continue
 452                 else:
 453                     print '+',
 454
 455                 s.execute( """INSERT INTO %s_contents (filename,section,package,binary_id,arch,suite)
 456                               SELECT file, :section, :package, :binary_id, :arch, :suite
 457                               FROM bin_contents
 458                               WHERE binary_id=:binary_id;""" % override_type_map[override.overridetype_id],
 459                            { 'section' : override.section_id,
 460                              'package' : override.package,
 461                              'binary_id' : binary.id,
 462                              'arch' : binary.architecture,
 463                              'suite' : override.suite_id } )
 464                 s.commit()
 465
 466     def generate(self):
 467         """
 468         Generate contents files for both deb and udeb
 469         """
 470         self.deb_generate()
 471         self.udeb_generate()
 472
 473     def deb_generate(self):
 474         """
 475         Generate Contents-$arch.gz files for every available arch in each given suite.
 476         """
 477         session = DBConn().session()
 478         debtype_id = get_override_type("deb", session)
 479         suites = self._suites()
 480
 481         inputtoquery = OneAtATime()
 482         querytoingest = OneAtATime()
 483         ingesttosort = OneAtATime()
 484         sorttooutput = OneAtATime()
 485         outputtogzip = OneAtATime()
 486
 487         qt = QueryThread(inputtoquery,querytoingest)
 488         it = IngestThread(querytoingest,ingesttosort)
 489         st = SortThread(ingesttosort,sorttooutput)
 490         ot = OutputThread(sorttooutput,outputtogzip)
 491         gt = GzipThread(outputtogzip, None)
 492
 493         qt.start()
 494         it.start()
 495         st.start()
 496         ot.start()
 497         gt.start()
 498
 499         # Get our suites, and the architectures
 500         for suite in [i.lower() for i in suites]:
 501             suite_id = get_suite(suite, session).suite_id
 502             print( "got suite_id: %s for suite: %s" % (suite_id, suite ) )
 503             arch_list = self._arches(suite_id, session)
 504
 505             for (arch_id,arch_str) in arch_list:
 506                 print( "suite: %s, arch: %s time: %s" %(suite_id, arch_id, datetime.datetime.now().isoformat()) )
 507
 508                 filename = "dists/%s/Contents-%s" % (suite, arch_str)
 509                 cf = DebContentFile(filename, suite, suite_id, arch_str, arch_id)
 510                 inputtoquery.enqueue( cf )
 511
 512         inputtoquery.enqueue( EndOfContents() )
 513         gt.join()
 514
 515     def udeb_generate(self):
 516         """
 517         Generate Contents-$arch.gz files for every available arch in each given suite.
 518         """
 519         session = DBConn().session()
 520         udebtype_id=DBConn().get_override_type_id("udeb")
 521         suites = self._suites()
 522
 523         inputtoquery = OneAtATime()
 524         querytoingest = OneAtATime()
 525         ingesttosort = OneAtATime()
 526         sorttooutput = OneAtATime()
 527         outputtogzip = OneAtATime()
 528
 529         qt = QueryThread(inputtoquery,querytoingest)
 530         it = IngestThread(querytoingest,ingesttosort)
 531         st = SortThread(ingesttosort,sorttooutput)
 532         ot = OutputThread(sorttooutput,outputtogzip)
 533         gt = GzipThread(outputtogzip, None)
 534
 535         qt.start()
 536         it.start()
 537         st.start()
 538         ot.start()
 539         gt.start()
 540
 541
 542     def generate(self):
 543         """
 544         Generate Contents-$arch.gz files for every available arch in each given suite.
 545         """
 546         session = DBConn().session()
 547
 548         arch_all_id = get_architecture("all", session).arch_id
 549
 550         # The MORE fun part. Ok, udebs need their own contents files, udeb, and udeb-nf (not-free)
 551         # This is HORRIBLY debian specific :-/
 552         for dtype, section, fn_pattern in \
 553               [('deb',  None,                        "dists/%s/Contents-%s.gz"),
 554                ('udeb', "debian-installer",          "dists/%s/Contents-udeb-%s.gz"),
 555                ('udeb', "non-free/debian-installer", "dists/%s/Contents-udeb-nf-%s.gz")]:
 556
 557             overridetype = get_override_type(dtype, session)
 558
 559             # For udebs, we only look in certain sections (see the for loop above)
 560             if section is not None:
 561                 section = get_section(section, session)
 562
 563             # Get our suites
 564             for suite in which_suites(session):
 565                 # Which architectures do we need to work on
 566                 arch_list = get_suite_architectures(suite.suite_name, skipsrc=True, skipall=True, session=session)
 567
 568                 # Set up our file writer dictionary
 569                 file_writers = {}
 570                 try:
 571                     # One file writer per arch
 572                     for arch in arch_list:
 573                         file_writers[arch.arch_id] = GzippedContentWriter(fn_pattern % (suite, arch.arch_string))
 574
 575                     for r in get_suite_contents(suite, overridetype, section, session=session).fetchall():
 576                         filename, section, package, arch_id = r
 577
 578                         if arch_id == arch_all_id:
 579                             # It's arch all, so all contents files get it
 580                             for writer in file_writers.values():
 581                                 writer.write(filename, section, package)
 582                         else:
 583                             if file_writers.has_key(arch_id):
 584                                 file_writers[arch_id].write(filename, section, package)
 585
 586                 finally:
 587                     # close all the files
 588                     for writer in file_writers.values():
 589                         writer.finish()
 590     def _suites(self):
 591         """
 592         return a list of suites to operate on
 593         """
 594         if Config().has_key( "%s::%s" %(options_prefix,"Suite")):
 595             suites = utils.split_args(Config()[ "%s::%s" %(options_prefix,"Suite")])
 596         else:
 597             suites = Config().SubTree("Suite").List()
 598
 599         return suites
 600
 601     def _arches(self, suite, session):
 602         """
 603         return a list of archs to operate on
 604         """
 605         arch_list = []
 606         arches = session.execute(
 607             """SELECT s.architecture, a.arch_string
 608             FROM suite_architectures s
 609             JOIN architecture a ON (s.architecture=a.id)
 610             WHERE suite = :suite_id""",
 611             {'suite_id':suite } )
 612
 613         while True:
 614             r = arches.fetchone()
 615             if not r:
 616                 break
 617
 618             if r[1] != "source" and r[1] != "all":
 619                 arch_list.append((r[0], r[1]))
 620
 621         return arch_list
 622
 623
 624 ################################################################################
 625
 626 def main():
 627     cnf = Config()
 628
 629     arguments = [('h',"help", "%s::%s" % (options_prefix,"Help")),
 630                  ('s',"suite", "%s::%s" % (options_prefix,"Suite"),"HasArg"),
 631                  ('q',"quiet", "%s::%s" % (options_prefix,"Quiet")),
 632                  ('v',"verbose", "%s::%s" % (options_prefix,"Verbose")),
 633                 ]
 634
 635     commands = {'generate' : Contents.deb_generate,
 636                 'bootstrap_bin' : Contents.bootstrap_bin,
 637                 'bootstrap' : Contents.bootstrap,
 638                 'cruft' : Contents.cruft,
 639                 }
 640
 641     args = apt_pkg.ParseCommandLine(cnf.Cnf, arguments,sys.argv)
 642
 643     if (len(args) < 1) or not commands.has_key(args[0]):
 644         usage()
 645
 646     if cnf.has_key("%s::%s" % (options_prefix,"Help")):
 647         usage()
 648
 649     level=logging.INFO
 650     if cnf.has_key("%s::%s" % (options_prefix,"Quiet")):
 651         level=logging.ERROR
 652
 653     elif cnf.has_key("%s::%s" % (options_prefix,"Verbose")):
 654         level=logging.DEBUG
 655
 656
 657     logging.basicConfig( level=level,
 658                          format='%(asctime)s %(levelname)s %(message)s',
 659                          stream = sys.stderr )
 660
 661     commands[args[0]](Contents())
 662
 663 def which_suites(session):
 664     """
 665     return a list of suites to operate on
 666     """
 667     if Config().has_key( "%s::%s" %(options_prefix,"Suite")):
 668         suites = utils.split_args(Config()[ "%s::%s" %(options_prefix,"Suite")])
 669     else:
 670         suites = Config().SubTree("Suite").List()
 671
 672     return [get_suite(s.lower(), session) for s in suites]
 673
 674
 675 if __name__ == '__main__':
 676     main()