daklib/dbconn.py

   1 #!/usr/bin/python
   2
   3 """ DB access class
   4
   5 @contact: Debian FTPMaster <ftpmaster@debian.org>
   6 @copyright: 2000, 2001, 2002, 2003, 2004, 2006  James Troup <james@nocrew.org>
   7 @copyright: 2008-2009  Mark Hymers <mhy@debian.org>
   8 @copyright: 2009  Joerg Jaspert <joerg@debian.org>
   9 @copyright: 2009  Mike O'Connor <stew@debian.org>
  10 @license: GNU General Public License version 2 or later
  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 # < mhy> I need a funny comment
  30 # < sgran> two peanuts were walking down a dark street
  31 # < sgran> one was a-salted
  32 #  * mhy looks up the definition of "funny"
  33
  34 ################################################################################
  35
  36 import os
  37 import psycopg2
  38 import traceback
  39
  40 from sqlalchemy import create_engine, Table, MetaData, select
  41 from sqlalchemy.orm import sessionmaker, mapper, relation
  42
  43 from singleton import Singleton
  44
  45 ################################################################################
  46
  47 class Architecture(object):
  48     def __init__(self, *args, **kwargs):
  49         pass
  50
  51     def __repr__(self):
  52         return '<Architecture %s>' % self.arch_string
  53
  54 def get_architecture(architecture, session=None):
  55     """
  56     Returns database id for given C{architecture}.
  57
  58     @type architecture: string
  59     @param architecture: The name of the architecture
  60
  61     @type session: Session
  62     @param session: Optional SQLA session object (a temporary one will be
  63     generated if not supplied)
  64
  65     @rtype: Architecture
  66     @return: Architecture object for the given arch (None if not present)
  67
  68     """
  69     if session is None:
  70         session = DBConn().session()
  71     q = session.query(Architecture).filter_by(arch_string=architecture)
  72     if q.count() == 0:
  73         return None
  74     return q.one()
  75
  76 class Archive(object):
  77     def __init__(self, *args, **kwargs):
  78         pass
  79
  80     def __repr__(self):
  81         return '<Archive %s>' % self.name
  82
  83 def get_archive(archive, session=None):
  84     """
  85     returns database id for given c{archive}.
  86
  87     @type archive: string
  88     @param archive: the name of the arhive
  89
  90     @type session: Session
  91     @param session: Optional SQLA session object (a temporary one will be
  92     generated if not supplied)
  93
  94     @rtype: Archive
  95     @return: Archive object for the given name (None if not present)
  96
  97     """
  98     archive = archive.lower()
  99     if session is None:
 100         session = DBConn().session()
 101     q = session.query(Archive).filter_by(archive_name=archive)
 102     if q.count() == 0:
 103         return None
 104     return q.one()
 105
 106
 107 class BinAssociation(object):
 108     def __init__(self, *args, **kwargs):
 109         pass
 110
 111     def __repr__(self):
 112         return '<BinAssociation %s (%s, %s)>' % (self.ba_id, self.binary, self.suite)
 113
 114 class Binary(object):
 115     def __init__(self, *args, **kwargs):
 116         pass
 117
 118     def __repr__(self):
 119         return '<Binary %s (%s, %s)>' % (self.package, self.version, self.architecture)
 120
 121 def get_binary_from_id(id, session=None):
 122     """
 123     Returns Binary object for given C{id}
 124
 125     @type id: int
 126     @param id: Id of the required binary
 127
 128     @type session: Session
 129     @param session: Optional SQLA session object (a temporary one will be
 130     generated if not supplied)
 131
 132     @rtype: Binary
 133     @return: Binary object for the given binary (None if not present)
 134     """
 135     if session is None:
 136         session = DBConn().session()
 137     q = session.query(Binary).filter_by(binary_id=id)
 138     if q.count() == 0:
 139         return None
 140     return q.one()
 141
 142 class Component(object):
 143     def __init__(self, *args, **kwargs):
 144         pass
 145
 146     def __repr__(self):
 147         return '<Component %s>' % self.component_name
 148
 149 def get_component(component, session=None):
 150     """
 151     Returns database id for given C{component}.
 152
 153     @type component: string
 154     @param component: The name of the override type
 155
 156     @rtype: int
 157     @return: the database id for the given component
 158
 159     """
 160     component = component.lower()
 161     if session is None:
 162         session = DBConn().session()
 163     q = session.query(Component).filter_by(component_name=component)
 164     if q.count() == 0:
 165         return None
 166     return q.one()
 167
 168 class DBConfig(object):
 169     def __init__(self, *args, **kwargs):
 170         pass
 171
 172     def __repr__(self):
 173         return '<DBConfig %s>' % self.name
 174
 175 class ContentFilename(object):
 176     def __init__(self, *args, **kwargs):
 177         pass
 178
 179     def __repr__(self):
 180         return '<ContentFilename %s>' % self.filename
 181
 182 class ContentFilepath(object):
 183     def __init__(self, *args, **kwargs):
 184         pass
 185
 186     def __repr__(self):
 187         return '<ContentFilepath %s>' % self.filepath
 188
 189 class ContentAssociations(object):
 190     def __init__(self, *args, **kwargs):
 191         pass
 192
 193     def __repr__(self):
 194         return '<ContentAssociation %s>' % self.ca_id
 195
 196 class DSCFile(object):
 197     def __init__(self, *args, **kwargs):
 198         pass
 199
 200     def __repr__(self):
 201         return '<DSCFile %s>' % self.dscfile_id
 202
 203 class PoolFile(object):
 204     def __init__(self, *args, **kwargs):
 205         pass
 206
 207     def __repr__(self):
 208         return '<PoolFile %s>' % self.filename
 209
 210 class Fingerprint(object):
 211     def __init__(self, *args, **kwargs):
 212         pass
 213
 214     def __repr__(self):
 215         return '<Fingerprint %s>' % self.fingerprint
 216
 217 class Keyring(object):
 218     def __init__(self, *args, **kwargs):
 219         pass
 220
 221     def __repr__(self):
 222         return '<Keyring %s>' % self.keyring_name
 223
 224 class Location(object):
 225     def __init__(self, *args, **kwargs):
 226         pass
 227
 228     def __repr__(self):
 229         return '<Location %s (%s)>' % (self.path, self.location_id)
 230
 231 class Maintainer(object):
 232     def __init__(self, *args, **kwargs):
 233         pass
 234
 235     def __repr__(self):
 236         return '''<Maintainer '%s' (%s)>''' % (self.name, self.maintainer_id)
 237
 238 class Override(object):
 239     def __init__(self, *args, **kwargs):
 240         pass
 241
 242     def __repr__(self):
 243         return '<Override %s (%s)>' % (self.package, self.suite_id)
 244
 245 class OverrideType(object):
 246     def __init__(self, *args, **kwargs):
 247         pass
 248
 249     def __repr__(self):
 250         return '<OverrideType %s>' % self.overridetype
 251
 252 def get_override_type(override_type, session=None):
 253     """
 254     Returns OverrideType object for given C{override type}.
 255
 256     @type override_type: string
 257     @param override_type: The name of the override type
 258
 259     @type session: Session
 260     @param session: Optional SQLA session object (a temporary one will be
 261     generated if not supplied)
 262
 263     @rtype: int
 264     @return: the database id for the given override type
 265
 266     """
 267     if session is None:
 268         session = DBConn().session()
 269     q = session.query(Priority).filter_by(priority=priority)
 270     if q.count() == 0:
 271         return None
 272     return q.one()
 273
 274 class PendingContentAssociation(object):
 275     def __init__(self, *args, **kwargs):
 276         pass
 277
 278     def __repr__(self):
 279         return '<PendingContentAssociation %s>' % self.pca_id
 280
 281 class Priority(object):
 282     def __init__(self, *args, **kwargs):
 283         pass
 284
 285     def __repr__(self):
 286         return '<Priority %s (%s)>' % (self.priority, self.priority_id)
 287
 288 def get_priority(priority, session=None):
 289     """
 290     Returns Priority object for given C{priority name}.
 291
 292     @type priority: string
 293     @param priority: The name of the priority
 294
 295     @type session: Session
 296     @param session: Optional SQLA session object (a temporary one will be
 297     generated if not supplied)
 298
 299     @rtype: Priority
 300     @return: Priority object for the given priority
 301
 302     """
 303     if session is None:
 304         session = DBConn().session()
 305     q = session.query(Priority).filter_by(priority=priority)
 306     if q.count() == 0:
 307         return None
 308     return q.one()
 309
 310 class Queue(object):
 311     def __init__(self, *args, **kwargs):
 312         pass
 313
 314     def __repr__(self):
 315         return '<Queue %s>' % self.queue_name
 316
 317 class QueueBuild(object):
 318     def __init__(self, *args, **kwargs):
 319         pass
 320
 321     def __repr__(self):
 322         return '<QueueBuild %s (%s)>' % (self.filename, self.queue_id)
 323
 324 class Section(object):
 325     def __init__(self, *args, **kwargs):
 326         pass
 327
 328     def __repr__(self):
 329         return '<Section %s>' % self.section
 330
 331 def get_section(section, session=None):
 332     """
 333     Returns Section object for given C{section name}.
 334
 335     @type section: string
 336     @param section: The name of the section
 337
 338     @type session: Session
 339     @param session: Optional SQLA session object (a temporary one will be
 340     generated if not supplied)
 341
 342     @rtype: Section
 343     @return: Section object for the given section name
 344
 345     """
 346     if session is None:
 347         session = DBConn().session()
 348     q = session.query(Section).filter_by(section=section)
 349     if q.count() == 0:
 350         return None
 351     return q.one()
 352
 353 class Source(object):
 354     def __init__(self, *args, **kwargs):
 355         pass
 356
 357     def __repr__(self):
 358         return '<Source %s (%s)>' % (self.source, self.version)
 359
 360 def get_source_in_suite(source, suite, session=None):
 361     """
 362     Returns list of Source objects for a combination of C{source} and C{suite}.
 363
 364       - B{source} - source package name, eg. I{mailfilter}, I{bbdb}, I{glibc}
 365       - B{suite} - a suite name, eg. I{unstable}
 366
 367     @type source: string
 368     @param source: source package name
 369
 370     @type suite: string
 371     @param suite: the suite name
 372
 373     @rtype: string
 374     @return: the version for I{source} in I{suite}
 375
 376     """
 377     if session is None:
 378         session = DBConn().session()
 379     q = session.query(SrcAssociation)
 380     q = q.join('source').filter_by(source=source)
 381     q = q.join('suite').filter_by(suite_name=suite)
 382     if q.count() == 0:
 383         return None
 384     # ???: Maybe we should just return the SrcAssociation object instead
 385     return q.one().source
 386
 387 class SrcAssociation(object):
 388     def __init__(self, *args, **kwargs):
 389         pass
 390
 391     def __repr__(self):
 392         return '<SrcAssociation %s (%s, %s)>' % (self.sa_id, self.source, self.suite)
 393
 394 class SrcUploader(object):
 395     def __init__(self, *args, **kwargs):
 396         pass
 397
 398     def __repr__(self):
 399         return '<SrcUploader %s>' % self.uploader_id
 400
 401 class Suite(object):
 402     def __init__(self, *args, **kwargs):
 403         pass
 404
 405     def __repr__(self):
 406         return '<Suite %s>' % self.suite_name
 407
 408 def get_suite(suite, session=None):
 409     """
 410     Returns Suite object for given C{suite name}.
 411
 412     @type suite: string
 413     @param suite: The name of the suite
 414
 415     @type session: Session
 416     @param session: Optional SQLA session object (a temporary one will be
 417     generated if not supplied)
 418
 419     @rtype: Suite
 420     @return: Suite object for the requested suite name (None if not presenT)
 421
 422     """
 423     if session is None:
 424         session = DBConn().session()
 425     q = session.query(Suite).filter_by(suite_name=suite)
 426     if q.count() == 0:
 427         return None
 428     return q.one()
 429
 430 class SuiteArchitecture(object):
 431     def __init__(self, *args, **kwargs):
 432         pass
 433
 434     def __repr__(self):
 435         return '<SuiteArchitecture (%s, %s)>' % (self.suite_id, self.arch_id)
 436
 437 class Uid(object):
 438     def __init__(self, *args, **kwargs):
 439         pass
 440
 441     def __repr__(self):
 442         return '<Uid %s (%s)>' % (self.uid, self.name)
 443
 444 ################################################################################
 445
 446 class DBConn(Singleton):
 447     """
 448     database module init.
 449     """
 450     def __init__(self, *args, **kwargs):
 451         super(DBConn, self).__init__(*args, **kwargs)
 452
 453     def _startup(self, *args, **kwargs):
 454         self.debug = False
 455         if kwargs.has_key('debug'):
 456             self.debug = True
 457         self.__createconn()
 458
 459     def __setuptables(self):
 460         self.tbl_architecture = Table('architecture', self.db_meta, autoload=True)
 461         self.tbl_archive = Table('archive', self.db_meta, autoload=True)
 462         self.tbl_bin_associations = Table('bin_associations', self.db_meta, autoload=True)
 463         self.tbl_binaries = Table('binaries', self.db_meta, autoload=True)
 464         self.tbl_component = Table('component', self.db_meta, autoload=True)
 465         self.tbl_config = Table('config', self.db_meta, autoload=True)
 466         self.tbl_content_associations = Table('content_associations', self.db_meta, autoload=True)
 467         self.tbl_content_file_names = Table('content_file_names', self.db_meta, autoload=True)
 468         self.tbl_content_file_paths = Table('content_file_paths', self.db_meta, autoload=True)
 469         self.tbl_dsc_files = Table('dsc_files', self.db_meta, autoload=True)
 470         self.tbl_files = Table('files', self.db_meta, autoload=True)
 471         self.tbl_fingerprint = Table('fingerprint', self.db_meta, autoload=True)
 472         self.tbl_keyrings = Table('keyrings', self.db_meta, autoload=True)
 473         self.tbl_location = Table('location', self.db_meta, autoload=True)
 474         self.tbl_maintainer = Table('maintainer', self.db_meta, autoload=True)
 475         self.tbl_override = Table('override', self.db_meta, autoload=True)
 476         self.tbl_override_type = Table('override_type', self.db_meta, autoload=True)
 477         self.tbl_pending_content_associations = Table('pending_content_associations', self.db_meta, autoload=True)
 478         self.tbl_priority = Table('priority', self.db_meta, autoload=True)
 479         self.tbl_queue = Table('queue', self.db_meta, autoload=True)
 480         self.tbl_queue_build = Table('queue_build', self.db_meta, autoload=True)
 481         self.tbl_section = Table('section', self.db_meta, autoload=True)
 482         self.tbl_source = Table('source', self.db_meta, autoload=True)
 483         self.tbl_src_associations = Table('src_associations', self.db_meta, autoload=True)
 484         self.tbl_src_uploaders = Table('src_uploaders', self.db_meta, autoload=True)
 485         self.tbl_suite = Table('suite', self.db_meta, autoload=True)
 486         self.tbl_suite_architectures = Table('suite_architectures', self.db_meta, autoload=True)
 487         self.tbl_uid = Table('uid', self.db_meta, autoload=True)
 488
 489     def __setupmappers(self):
 490         mapper(Architecture, self.tbl_architecture,
 491                properties = dict(arch_id = self.tbl_architecture.c.id))
 492
 493         mapper(Archive, self.tbl_archive,
 494                properties = dict(archive_id = self.tbl_archive.c.id,
 495                                  archive_name = self.tbl_archive.c.name))
 496
 497         mapper(BinAssociation, self.tbl_bin_associations,
 498                properties = dict(ba_id = self.tbl_bin_associations.c.id,
 499                                  suite_id = self.tbl_bin_associations.c.suite,
 500                                  suite = relation(Suite),
 501                                  binary_id = self.tbl_bin_associations.c.bin,
 502                                  binary = relation(Binary)))
 503
 504         mapper(Binary, self.tbl_binaries,
 505                properties = dict(binary_id = self.tbl_binaries.c.id,
 506                                  package = self.tbl_binaries.c.package,
 507                                  version = self.tbl_binaries.c.version,
 508                                  maintainer_id = self.tbl_binaries.c.maintainer,
 509                                  maintainer = relation(Maintainer),
 510                                  source_id = self.tbl_binaries.c.source,
 511                                  source = relation(Source),
 512                                  arch_id = self.tbl_binaries.c.architecture,
 513                                  architecture = relation(Architecture),
 514                                  poolfile_id = self.tbl_binaries.c.file,
 515                                  poolfile = relation(PoolFile),
 516                                  binarytype = self.tbl_binaries.c.type,
 517                                  fingerprint_id = self.tbl_binaries.c.sig_fpr,
 518                                  fingerprint = relation(Fingerprint),
 519                                  install_date = self.tbl_binaries.c.install_date,
 520                                  binassociations = relation(BinAssociation,
 521                                                             primaryjoin=(self.tbl_binaries.c.id==self.tbl_bin_associations.c.bin))))
 522
 523         mapper(Component, self.tbl_component,
 524                properties = dict(component_id = self.tbl_component.c.id,
 525                                  component_name = self.tbl_component.c.name))
 526
 527         mapper(DBConfig, self.tbl_config,
 528                properties = dict(config_id = self.tbl_config.c.id))
 529
 530         mapper(ContentAssociations, self.tbl_content_associations,
 531                properties = dict(ca_id = self.tbl_content_associations.c.id,
 532                                  filename_id = self.tbl_content_associations.c.filename,
 533                                  filename    = relation(ContentFilename),
 534                                  filepath_id = self.tbl_content_associations.c.filepath,
 535                                  filepath    = relation(ContentFilepath),
 536                                  binary_id   = self.tbl_content_associations.c.binary_pkg,
 537                                  binary      = relation(Binary)))
 538
 539
 540         mapper(ContentFilename, self.tbl_content_file_names,
 541                properties = dict(cafilename_id = self.tbl_content_file_names.c.id,
 542                                  filename = self.tbl_content_file_names.c.file))
 543
 544         mapper(ContentFilepath, self.tbl_content_file_paths,
 545                properties = dict(cafilepath_id = self.tbl_content_file_paths.c.id,
 546                                  filepath = self.tbl_content_file_paths.c.path))
 547
 548         mapper(DSCFile, self.tbl_dsc_files,
 549                properties = dict(dscfile_id = self.tbl_dsc_files.c.id,
 550                                  source_id = self.tbl_dsc_files.c.source,
 551                                  source = relation(Source),
 552                                  poolfile_id = self.tbl_dsc_files.c.file,
 553                                  poolfile = relation(PoolFile)))
 554
 555         mapper(PoolFile, self.tbl_files,
 556                properties = dict(file_id = self.tbl_files.c.id,
 557                                  filesize = self.tbl_files.c.size,
 558                                  location_id = self.tbl_files.c.location,
 559                                  location = relation(Location)))
 560
 561         mapper(Fingerprint, self.tbl_fingerprint,
 562                properties = dict(fingerprint_id = self.tbl_fingerprint.c.id,
 563                                  uid_id = self.tbl_fingerprint.c.uid,
 564                                  uid = relation(Uid),
 565                                  keyring_id = self.tbl_fingerprint.c.keyring,
 566                                  keyring = relation(Keyring)))
 567
 568         mapper(Keyring, self.tbl_keyrings,
 569                properties = dict(keyring_name = self.tbl_keyrings.c.name,
 570                                  keyring_id = self.tbl_keyrings.c.id))
 571
 572         mapper(Location, self.tbl_location,
 573                properties = dict(location_id = self.tbl_location.c.id,
 574                                  component_id = self.tbl_location.c.component,
 575                                  component = relation(Component),
 576                                  archive_id = self.tbl_location.c.archive,
 577                                  archive = relation(Archive),
 578                                  archive_type = self.tbl_location.c.type))
 579
 580         mapper(Maintainer, self.tbl_maintainer,
 581                properties = dict(maintainer_id = self.tbl_maintainer.c.id))
 582
 583         mapper(Override, self.tbl_override,
 584                properties = dict(suite_id = self.tbl_override.c.suite,
 585                                  suite = relation(Suite),
 586                                  component_id = self.tbl_override.c.component,
 587                                  component = relation(Component),
 588                                  priority_id = self.tbl_override.c.priority,
 589                                  priority = relation(Priority),
 590                                  section_id = self.tbl_override.c.section,
 591                                  section = relation(Section),
 592                                  overridetype_id = self.tbl_override.c.type,
 593                                  overridetype = relation(OverrideType)))
 594
 595         mapper(OverrideType, self.tbl_override_type,
 596                properties = dict(overridetype = self.tbl_override_type.c.type,
 597                                  overridetype_id = self.tbl_override_type.c.id))
 598
 599         mapper(PendingContentAssociation, self.tbl_pending_content_associations,
 600                properties = dict(pca_id = self.tbl_pending_content_associations.c.id,
 601                                  filepath_id = self.tbl_pending_content_associations.c.filepath,
 602                                  filepath = relation(ContentFilepath),
 603                                  filename_id = self.tbl_pending_content_associations.c.filename,
 604                                  filename = relation(ContentFilename)))
 605
 606         mapper(Priority, self.tbl_priority,
 607                properties = dict(priority_id = self.tbl_priority.c.id))
 608
 609         mapper(Queue, self.tbl_queue,
 610                properties = dict(queue_id = self.tbl_queue.c.id))
 611
 612         mapper(QueueBuild, self.tbl_queue_build,
 613                properties = dict(suite_id = self.tbl_queue_build.c.suite,
 614                                  queue_id = self.tbl_queue_build.c.queue,
 615                                  queue = relation(Queue)))
 616
 617         mapper(Section, self.tbl_section,
 618                properties = dict(section_id = self.tbl_section.c.id))
 619
 620         mapper(Source, self.tbl_source,
 621                properties = dict(source_id = self.tbl_source.c.id,
 622                                  version = self.tbl_source.c.version,
 623                                  maintainer_id = self.tbl_source.c.maintainer,
 624                                  maintainer = relation(Maintainer,
 625                                                        primaryjoin=(self.tbl_source.c.maintainer==self.tbl_maintainer.c.id)),
 626                                  poolfile_id = self.tbl_source.c.file,
 627                                  poolfile = relation(PoolFile),
 628                                  fingerprint_id = self.tbl_source.c.sig_fpr,
 629                                  fingerprint = relation(Fingerprint),
 630                                  changedby_id = self.tbl_source.c.changedby,
 631                                  changedby = relation(Maintainer,
 632                                                       primaryjoin=(self.tbl_source.c.changedby==self.tbl_maintainer.c.id)),
 633                                  srcfiles = relation(DSCFile,
 634                                                      primaryjoin=(self.tbl_source.c.id==self.tbl_dsc_files.c.source)),
 635                                  srcassociations = relation(SrcAssociation,
 636                                                             primaryjoin=(self.tbl_source.c.id==self.tbl_src_associations.c.source))))
 637
 638         mapper(SrcAssociation, self.tbl_src_associations,
 639                properties = dict(sa_id = self.tbl_src_associations.c.id,
 640                                  suite_id = self.tbl_src_associations.c.suite,
 641                                  suite = relation(Suite),
 642                                  source_id = self.tbl_src_associations.c.source,
 643                                  source = relation(Source)))
 644
 645         mapper(SrcUploader, self.tbl_src_uploaders,
 646                properties = dict(uploader_id = self.tbl_src_uploaders.c.id,
 647                                  source_id = self.tbl_src_uploaders.c.source,
 648                                  source = relation(Source,
 649                                                    primaryjoin=(self.tbl_src_uploaders.c.source==self.tbl_source.c.id)),
 650                                  maintainer_id = self.tbl_src_uploaders.c.maintainer,
 651                                  maintainer = relation(Maintainer,
 652                                                        primaryjoin=(self.tbl_src_uploaders.c.maintainer==self.tbl_maintainer.c.id))))
 653
 654         mapper(Suite, self.tbl_suite,
 655                properties = dict(suite_id = self.tbl_suite.c.id))
 656
 657         mapper(SuiteArchitecture, self.tbl_suite_architectures,
 658                properties = dict(suite_id = self.tbl_suite_architectures.c.suite,
 659                                  suite = relation(Suite),
 660                                  arch_id = self.tbl_suite_architectures.c.architecture,
 661                                  architecture = relation(Architecture)))
 662
 663         mapper(Uid, self.tbl_uid,
 664                properties = dict(uid_id = self.tbl_uid.c.id))
 665
 666     ## Connection functions
 667     def __createconn(self):
 668         from config import Config
 669         cnf = Config()
 670         if cnf["DB::Host"]:
 671             # TCP/IP
 672             connstr = "postgres://%s" % cnf["DB::Host"]
 673             if cnf["DB::Port"] and cnf["DB::Port"] != "-1":
 674                 connstr += ":%s" % cnf["DB::Port"]
 675             connstr += "/%s" % cnf["DB::Name"]
 676         else:
 677             # Unix Socket
 678             connstr = "postgres:///%s" % cnf["DB::Name"]
 679             if cnf["DB::Port"] and cnf["DB::Port"] != "-1":
 680                 connstr += "?port=%s" % cnf["DB::Port"]
 681
 682         self.db_pg   = create_engine(connstr, echo=self.debug)
 683         self.db_meta = MetaData()
 684         self.db_meta.bind = self.db_pg
 685         self.db_smaker = sessionmaker(bind=self.db_pg,
 686                                       autoflush=True,
 687                                       transactional=True)
 688
 689         self.__setuptables()
 690         self.__setupmappers()
 691
 692     def session(self):
 693         return self.db_smaker()
 694
 695     def prepare(self,name,statement):
 696         if not self.prepared_statements.has_key(name):
 697             pgc.execute(statement)
 698             self.prepared_statements[name] = statement
 699
 700
 701     def get_location_id(self, location, component, archive):
 702         """
 703         Returns database id for the location behind the given combination of
 704           - B{location} - the path of the location, eg. I{/srv/ftp.debian.org/ftp/pool/}
 705           - B{component} - the id of the component as returned by L{get_component_id}
 706           - B{archive} - the id of the archive as returned by L{get_archive_id}
 707         Results are kept in a cache during runtime to minimize database queries.
 708
 709         @type location: string
 710         @param location: the path of the location
 711
 712         @type component: int
 713         @param component: the id of the component
 714
 715         @type archive: int
 716         @param archive: the id of the archive
 717
 718         @rtype: int
 719         @return: the database id for the location
 720
 721         """
 722
 723         archive_id = self.get_archive_id(archive)
 724
 725         if not archive_id:
 726             return None
 727
 728         res = None
 729
 730         if component:
 731             component_id = self.get_component_id(component)
 732             if component_id:
 733                 res = self.__get_single_id("SELECT id FROM location WHERE path=%(location)s AND component=%(component)s AND archive=%(archive)s",
 734                         {'location': location,
 735                          'archive': int(archive_id),
 736                          'component': component_id}, cachename='location')
 737         else:
 738             res = self.__get_single_id("SELECT id FROM location WHERE path=%(location)s AND archive=%(archive)d",
 739                     {'location': location, 'archive': archive_id, 'component': ''}, cachename='location')
 740
 741         return res
 742
 743
 744
 745 def get_files_id (self, filename, size, md5sum, location_id):
 746     """
 747     Returns -1, -2 or the file_id for filename, if its C{size} and C{md5sum} match an
 748     existing copy.
 749
 750     The database is queried using the C{filename} and C{location_id}. If a file does exist
 751     at that location, the existing size and md5sum are checked against the provided
 752     parameters. A size or checksum mismatch returns -2. If more than one entry is
 753     found within the database, a -1 is returned, no result returns None, otherwise
 754     the file id.
 755
 756     @type filename: string
 757     @param filename: the filename of the file to check against the DB
 758
 759     @type size: int
 760     @param size: the size of the file to check against the DB
 761
 762     @type md5sum: string
 763     @param md5sum: the md5sum of the file to check against the DB
 764
 765     @type location_id: int
 766     @param location_id: the id of the location as returned by L{get_location_id}
 767
 768     @rtype: int / None
 769     @return: Various return values are possible:
 770                - -2: size/checksum error
 771                - -1: more than one file found in database
 772                - None: no file found in database
 773                - int: file id
 774
 775     """
 776     values = {'filename' : filename,
 777               'location' : location_id}
 778
 779     if not res:
 780         query = """SELECT id, size, md5sum
 781                    FROM files
 782                    WHERE filename = %(filename)s AND location = %(location)s"""
 783
 784         cursor = self.db_con.cursor()
 785         cursor.execute( query, values )
 786
 787         if cursor.rowcount == 0:
 788             res = None
 789
 790         elif cursor.rowcount != 1:
 791             res = -1
 792
 793         else:
 794             row = cursor.fetchone()
 795
 796             if row[1] != int(size) or row[2] != md5sum:
 797                 res =  -2
 798
 799             else:
 800                 res = row[0]
 801
 802     return res
 803
 804
 805 def get_or_set_contents_file_id(self, filename):
 806     """
 807     Returns database id for given filename.
 808
 809     If no matching file is found, a row is inserted.
 810
 811     @type filename: string
 812     @param filename: The filename
 813
 814     @rtype: int
 815     @return: the database id for the given component
 816     """
 817     try:
 818         values={'value': filename}
 819         query = "SELECT id FROM content_file_names WHERE file = %(value)s"
 820         if not id:
 821             c = self.db_con.cursor()
 822             c.execute( "INSERT INTO content_file_names VALUES (DEFAULT, %(value)s) RETURNING id",
 823                        values )
 824
 825             id = c.fetchone()[0]
 826
 827         return id
 828     except:
 829         traceback.print_exc()
 830         raise
 831
 832 def get_or_set_contents_path_id(self, path):
 833     """
 834     Returns database id for given path.
 835
 836     If no matching file is found, a row is inserted.
 837
 838     @type path: string
 839     @param path: The filename
 840
 841     @rtype: int
 842     @return: the database id for the given component
 843     """
 844     try:
 845         values={'value': path}
 846         query = "SELECT id FROM content_file_paths WHERE path = %(value)s"
 847         if not id:
 848             c = self.db_con.cursor()
 849             c.execute( "INSERT INTO content_file_paths VALUES (DEFAULT, %(value)s) RETURNING id",
 850                        values )
 851
 852             id = c.fetchone()[0]
 853
 854         return id
 855     except:
 856         traceback.print_exc()
 857         raise
 858
 859 def get_suite_architectures(self, suite):
 860     """
 861     Returns list of architectures for C{suite}.
 862
 863     @type suite: string, int
 864     @param suite: the suite name or the suite_id
 865
 866     @rtype: list
 867     @return: the list of architectures for I{suite}
 868     """
 869
 870     suite_id = None
 871     if type(suite) == str:
 872         suite_id = self.get_suite_id(suite)
 873     elif type(suite) == int:
 874         suite_id = suite
 875     else:
 876         return None
 877
 878     c = self.db_con.cursor()
 879     c.execute( """SELECT a.arch_string FROM suite_architectures sa
 880                   JOIN architecture a ON (a.id = sa.architecture)
 881                   WHERE suite='%s'""" % suite_id )
 882
 883     return map(lambda x: x[0], c.fetchall())
 884
 885 def insert_content_paths(self, bin_id, fullpaths):
 886     """
 887     Make sure given path is associated with given binary id
 888
 889     @type bin_id: int
 890     @param bin_id: the id of the binary
 891     @type fullpaths: list
 892     @param fullpaths: the list of paths of the file being associated with the binary
 893
 894     @return: True upon success
 895     """
 896
 897     c = self.db_con.cursor()
 898
 899     c.execute("BEGIN WORK")
 900     try:
 901
 902         for fullpath in fullpaths:
 903             (path, file) = os.path.split(fullpath)
 904
 905             # Get the necessary IDs ...
 906             file_id = self.get_or_set_contents_file_id(file)
 907             path_id = self.get_or_set_contents_path_id(path)
 908
 909             c.execute("""INSERT INTO content_associations
 910                            (binary_pkg, filepath, filename)
 911                        VALUES ( '%d', '%d', '%d')""" % (bin_id, path_id, file_id) )
 912
 913         c.execute("COMMIT")
 914         return True
 915     except:
 916         traceback.print_exc()
 917         c.execute("ROLLBACK")
 918         return False
 919
 920 def insert_pending_content_paths(self, package, fullpaths):
 921     """
 922     Make sure given paths are temporarily associated with given
 923     package
 924
 925     @type package: dict
 926     @param package: the package to associate with should have been read in from the binary control file
 927     @type fullpaths: list
 928     @param fullpaths: the list of paths of the file being associated with the binary
 929
 930     @return: True upon success
 931     """
 932
 933     c = self.db_con.cursor()
 934
 935     c.execute("BEGIN WORK")
 936     try:
 937         arch_id = self.get_architecture_id(package['Architecture'])
 938
 939         # Remove any already existing recorded files for this package
 940         c.execute("""DELETE FROM pending_content_associations
 941                      WHERE package=%(Package)s
 942                      AND version=%(Version)s
 943                      AND architecture=%(ArchID)s""", {'Package': package['Package'],
 944                                                       'Version': package['Version'],
 945                                                       'ArchID':  arch_id})
 946
 947         for fullpath in fullpaths:
 948             (path, file) = os.path.split(fullpath)
 949
 950             if path.startswith( "./" ):
 951                 path = path[2:]
 952             # Get the necessary IDs ...
 953             file_id = self.get_or_set_contents_file_id(file)
 954             path_id = self.get_or_set_contents_path_id(path)
 955
 956             c.execute("""INSERT INTO pending_content_associations
 957                            (package, version, architecture, filepath, filename)
 958                         VALUES (%%(Package)s, %%(Version)s, '%d', '%d', '%d')"""
 959                 % (arch_id, path_id, file_id), package )
 960
 961         c.execute("COMMIT")
 962         return True
 963     except:
 964         traceback.print_exc()
 965         c.execute("ROLLBACK")
 966         return False