--- /dev/null
+#!/usr/bin/env python
+"""
+Helper code for contents generation.
+
+@contact: Debian FTPMaster <ftpmaster@debian.org>
+@copyright: 2011 Torsten Werner <twerner@debian.org>
+@license: GNU General Public License version 2 or later
+"""
+
+################################################################################
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+################################################################################
+
+from daklib.dbconn import *
+from daklib.config import Config
+from daklib.threadpool import ThreadPool
+
+from sqlalchemy import desc, or_
+from subprocess import Popen, PIPE
+
+class ContentsWriter(object):
+ '''
+ ContentsWriter writes the Contents-$arch.gz files.
+ '''
+ def __init__(self, suite, architecture, overridetype, component = None):
+ '''
+ The constructor clones its arguments into a new session object to make
+ sure that the new ContentsWriter object can be executed in a different
+ thread.
+ '''
+ self.suite = suite.clone()
+ self.session = self.suite.session()
+ self.architecture = architecture.clone(self.session)
+ self.overridetype = overridetype.clone(self.session)
+ if component is not None:
+ self.component = component.clone(self.session)
+ else:
+ self.component = None
+
+ def query(self):
+ '''
+ Returns a query object that is doing most of the work.
+ '''
+ params = {
+ 'suite': self.suite.suite_id,
+ 'arch_all': get_architecture('all', self.session).arch_id,
+ 'arch': self.architecture.arch_id,
+ 'type_id': self.overridetype.overridetype_id,
+ 'type': self.overridetype.overridetype,
+ }
+
+ if self.component is not None:
+ params['component'] = component.component_id
+ sql = '''
+create temp table newest_binaries (
+ id integer primary key,
+ package text);
+
+create index newest_binaries_by_package on newest_binaries (package);
+
+insert into newest_binaries (id, package)
+ select distinct on (package) id, package from binaries
+ where type = :type and
+ (architecture = :arch_all or architecture = :arch) and
+ id in (select bin from bin_associations where suite = :suite)
+ order by package, version desc;
+
+with
+
+unique_override as
+ (select o.package, s.section
+ from override o, section s
+ where o.suite = :suite and o.type = :type_id and o.section = s.id and
+ o.component = :component)
+
+select bc.file, substring(o.section from position('/' in o.section) + 1) || '/' || b.package as package
+ from newest_binaries b, bin_contents bc, unique_override o
+ where b.id = bc.binary_id and o.package = b.package
+ order by bc.file, b.package'''
+
+ else:
+ sql = '''
+create temp table newest_binaries (
+ id integer primary key,
+ package text);
+
+create index newest_binaries_by_package on newest_binaries (package);
+
+insert into newest_binaries (id, package)
+ select distinct on (package) id, package from binaries
+ where type = :type and
+ (architecture = :arch_all or architecture = :arch) and
+ id in (select bin from bin_associations where suite = :suite)
+ order by package, version desc;
+
+with
+
+unique_override as
+ (select distinct on (o.package, s.section) o.package, s.section
+ from override o, section s
+ where o.suite = :suite and o.type = :type_id and o.section = s.id
+ order by o.package, s.section, o.modified desc)
+
+select bc.file, substring(o.section from position('/' in o.section) + 1) || '/' || b.package as package
+ from newest_binaries b, bin_contents bc, unique_override o
+ where b.id = bc.binary_id and o.package = b.package
+ order by bc.file, b.package'''
+
+ return self.session.query("file", "package").from_statement(sql). \
+ params(params)
+
+ def formatline(self, filename, package_list):
+ '''
+ Returns a formatted string for the filename argument.
+ '''
+ package_list = ','.join(package_list)
+ return "%-60s%s\n" % (filename, package_list)
+
+ def fetch(self):
+ '''
+ Yields a new line of the Contents-$arch.gz file in filename order.
+ '''
+ last_filename = None
+ package_list = []
+ for filename, package in self.query().yield_per(100):
+ if filename != last_filename:
+ if last_filename is not None:
+ yield self.formatline(last_filename, package_list)
+ last_filename = filename
+ package_list = []
+ package_list.append(package)
+ yield self.formatline(last_filename, package_list)
+ # end transaction to return connection to pool
+ self.session.rollback()
+
+ def get_list(self):
+ '''
+ Returns a list of lines for the Contents-$arch.gz file.
+ '''
+ return [item for item in self.fetch()]
+
+ def output_filename(self):
+ '''
+ Returns the name of the output file.
+ '''
+ values = {
+ 'root': Config()['Dir::Root'],
+ 'suite': self.suite.suite_name,
+ 'architecture': self.architecture.arch_string
+ }
+ if self.component is None:
+ return "%(root)s%(suite)s/Contents-%(architecture)s.gz" % values
+ values['component'] = self.component.component_name
+ return "%(root)s%(suite)s/%(component)s/Contents-%(architecture)s.gz" % values
+
+ def write_file(self):
+ '''
+ Write the output file.
+ '''
+ command = ['gzip', '--rsyncable']
+ output_file = open(self.output_filename(), 'w')
+ pipe = Popen(command, stdin = PIPE, stdout = output_file).stdin
+ for item in self.fetch():
+ pipe.write(item)
+ pipe.close()
+ output_file.close()
+
+
+class ContentsScanner(object):
+ '''
+ ContentsScanner provides a threadsafe method scan() to scan the contents of
+ a DBBinary object.
+ '''
+ def __init__(self, binary):
+ '''
+ The argument binary is the actual DBBinary object that should be
+ scanned.
+ '''
+ self.binary_id = binary.binary_id
+
+ def scan(self, dummy_arg = None):
+ '''
+ This method does the actual scan and fills in the associated BinContents
+ property. It commits any changes to the database. The argument dummy_arg
+ is ignored but needed by our threadpool implementation.
+ '''
+ session = DBConn().session()
+ binary = session.query(DBBinary).get(self.binary_id)
+ for filename in binary.scan_contents():
+ binary.contents.append(BinContents(file = filename))
+ session.commit()
+ session.close()
+
+ @classmethod
+ def scan_all(class_, limit = None):
+ '''
+ The class method scan_all() scans all binaries using multiple threads.
+ The number of binaries to be scanned can be limited with the limit
+ argument.
+ '''
+ session = DBConn().session()
+ query = session.query(DBBinary).filter(DBBinary.contents == None)
+ if limit is not None:
+ query = query.limit(limit)
+ threadpool = ThreadPool()
+ for binary in query.yield_per(100):
+ threadpool.queueTask(ContentsScanner(binary).scan)
+ threadpool.joinAll()
+ session.close()
from db_test import DBDakTestCase
-from daklib.dbconn import DBConn, BinContents, OverrideType, get_override_type, \
- Section, get_section, get_sections, Priority, get_priority, get_priorities, \
- Override, get_override
+from daklib.dbconn import *
+from daklib.contents import ContentsWriter, ContentsScanner
from sqlalchemy.exc import FlushError, IntegrityError
import unittest
self.assertEqual(self.override['hello_sid_main_udeb'], \
self.otype['udeb'].overrides.one())
+ def test_contentswriter(self):
+ '''
+ Test the ContentsWriter class.
+ '''
+ self.setup_suites()
+ self.setup_architectures()
+ self.setup_overridetypes()
+ self.setup_binaries()
+ self.setup_overrides()
+ self.binary['hello_2.2-1_i386'].contents.append(BinContents(file = '/usr/bin/hello'))
+ self.session.commit()
+ cw = ContentsWriter(self.suite['squeeze'], self.arch['i386'], self.otype['deb'])
+ self.assertEqual(['/usr/bin/hello python/hello\n'], \
+ cw.get_list())
+ # test formatline and sort order
+ self.assertEqual('/usr/bin/hello python/hello\n', \
+ cw.formatline('/usr/bin/hello', ['python/hello']))
+ self.assertEqual('/usr/bin/hello editors/emacs,python/hello,utils/sl\n', \
+ cw.formatline('/usr/bin/hello', ['editors/emacs', 'python/hello', 'utils/sl']))
+ # test output_filename
+ self.assertEqual('tests/fixtures/ftp/squeeze/Contents-i386.gz', \
+ cw.output_filename())
+ cw = ContentsWriter(self.suite['squeeze'], self.arch['i386'], \
+ self.otype['udeb'], self.comp['main'])
+ self.assertEqual('tests/fixtures/ftp/squeeze/main/Contents-i386.gz', \
+ cw.output_filename())
+
+ def test_scan_contents(self):
+ self.setup_binaries()
+ filelist = [f for f in self.binary['hello_2.2-1_i386'].scan_contents()]
+ self.assertEqual(['usr/bin/hello', 'usr/share/doc/hello/copyright'],
+ filelist)
+ self.session.commit()
+ ContentsScanner(self.binary['hello_2.2-1_i386']).scan()
+ bin_contents_list = self.binary['hello_2.2-1_i386'].contents.all()
+ self.assertEqual(2, len(bin_contents_list))
+ self.assertEqual('usr/bin/hello', bin_contents_list[0].file)
+ self.assertEqual('usr/share/doc/hello/copyright', bin_contents_list[1].file)
+
+ def classes_to_clean(self):
+ return [Override, Suite, BinContents, DBBinary, DBSource, Architecture, Section, \
+ OverrideType, Maintainer, Component, Priority, PoolFile]
+
if __name__ == '__main__':
unittest.main()
projects / dak.git / commitdiff