from daklib.dbconn import *
from daklib.config import Config
-from daklib.threadpool import ThreadPool
-from multiprocessing import Pool
-from sqlalchemy import desc, or_
-from sqlalchemy.exc import IntegrityError
-from subprocess import Popen, PIPE
+from multiprocessing import Pool
+from shutil import rmtree
+from subprocess import Popen, PIPE, check_call
+from tempfile import mkdtemp
import os.path
'''
This function is called in a new subprocess.
'''
- DBConn().reset()
session = DBConn().session()
suite = Suite.get(suite_id, session)
architecture = Architecture.get(arch_id, session)
return log_message
-class ContentsScanner(object):
+class BinaryContentsScanner(object):
'''
- ContentsScanner provides a threadsafe method scan() to scan the contents of
- a DBBinary object.
+ BinaryContentsScanner provides a threadsafe method scan() to scan the
+ contents of a DBBinary object.
'''
- def __init__(self, binary):
+ def __init__(self, binary_id):
'''
- The argument binary is the actual DBBinary object that should be
- scanned.
+ The argument binary_id is the id of the DBBinary object that
+ should be scanned.
'''
- self.binary_id = binary.binary_id
+ self.binary_id = binary_id
def scan(self, dummy_arg = None):
'''
if limit is not None:
query = query.limit(limit)
processed = query.count()
- threadpool = ThreadPool()
+ pool = Pool()
for binary in query.yield_per(100):
- threadpool.queueTask(ContentsScanner(binary).scan)
- threadpool.joinAll()
+ pool.apply_async(binary_scan_helper, (binary.binary_id, ))
+ pool.close()
+ pool.join()
+ remaining = remaining()
+ session.close()
+ return { 'processed': processed, 'remaining': remaining }
+
+def binary_scan_helper(binary_id):
+ '''
+ This function runs in a subprocess.
+ '''
+ scanner = BinaryContentsScanner(binary_id)
+ scanner.scan()
+
+
+class UnpackedSource(object):
+ '''
+ UnpackedSource extracts a source package into a temporary location and
+ gives you some convinient function for accessing it.
+ '''
+ def __init__(self, dscfilename):
+ '''
+ The dscfilename is a name of a DSC file that will be extracted.
+ '''
+ self.root_directory = os.path.join(mkdtemp(), 'root')
+ command = ('dpkg-source', '--no-copy', '--no-check', '-x', dscfilename,
+ self.root_directory)
+ # dpkg-source does not have a --quiet option
+ devnull = open(os.devnull, 'w')
+ check_call(command, stdout = devnull, stderr = devnull)
+ devnull.close()
+
+ def get_root_directory(self):
+ '''
+ Returns the name of the package's root directory which is the directory
+ where the debian subdirectory is located.
+ '''
+ return self.root_directory
+
+ def get_changelog_file(self):
+ '''
+ Returns a file object for debian/changelog or None if no such file exists.
+ '''
+ changelog_name = os.path.join(self.root_directory, 'debian', 'changelog')
+ try:
+ return open(changelog_name)
+ except IOError:
+ return None
+
+ def get_all_filenames(self):
+ '''
+ Returns an iterator over all filenames. The filenames will be relative
+ to the root directory.
+ '''
+ skip = len(self.root_directory) + 1
+ for root, _, files in os.walk(self.root_directory):
+ for name in files:
+ yield os.path.join(root[skip:], name)
+
+ def cleanup(self):
+ '''
+ Removes all temporary files.
+ '''
+ if self.root_directory is None:
+ return
+ parent_directory = os.path.dirname(self.root_directory)
+ rmtree(parent_directory)
+ self.root_directory = None
+
+ def __del__(self):
+ '''
+ Enforce cleanup.
+ '''
+ self.cleanup()
+
+
+class SourceContentsScanner(object):
+ '''
+ SourceContentsScanner provides a method scan() to scan the contents of a
+ DBSource object.
+ '''
+ def __init__(self, source_id):
+ '''
+ The argument source_id is the id of the DBSource object that
+ should be scanned.
+ '''
+ self.source_id = source_id
+
+ def scan(self):
+ '''
+ This method does the actual scan and fills in the associated SrcContents
+ property. It commits any changes to the database.
+ '''
+ session = DBConn().session()
+ source = session.query(DBSource).get(self.source_id)
+ fileset = set(source.scan_contents())
+ for filename in fileset:
+ source.contents.append(SrcContents(file = filename))
+ session.commit()
+ session.close()
+
+ @classmethod
+ def scan_all(class_, limit = None):
+ '''
+ The class method scan_all() scans all source using multiple processes.
+ The number of sources to be scanned can be limited with the limit
+ argument. Returns the number of processed and remaining packages as a
+ dict.
+ '''
+ session = DBConn().session()
+ query = session.query(DBSource).filter(DBSource.contents == None)
+ remaining = query.count
+ if limit is not None:
+ query = query.limit(limit)
+ processed = query.count()
+ pool = Pool()
+ for source in query.yield_per(100):
+ pool.apply_async(source_scan_helper, (source.source_id, ))
+ pool.close()
+ pool.join()
remaining = remaining()
session.close()
return { 'processed': processed, 'remaining': remaining }
+
+def source_scan_helper(binary_id):
+ '''
+ This function runs in a subprocess.
+ '''
+ scanner = SourceContentsScanner(source_id)
+ scanner.scan()
+
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