From: Ansgar Burchardt Date: Thu, 28 Apr 2011 22:57:55 +0000 (+0000) Subject: look for already existing files in build queues X-Git-Url: https://git.decadent.org.uk/gitweb/?a=commitdiff_plain;h=a9c0c6c455839e7e2daaa9b746dfbc30845cf02e;p=dak.git look for already existing files in build queues --- diff --git a/daklib/dbconn.py b/daklib/dbconn.py index 6cddd35f..91ae848e 100755 --- a/daklib/dbconn.py +++ b/daklib/dbconn.py @@ -33,6 +33,7 @@ ################################################################################ +import apt_pkg import os from os.path import normpath import re @@ -73,7 +74,7 @@ from sqlalchemy.orm.exc import NoResultFound # in the database from config import Config from textutils import fix_maintainer -from dak_exceptions import DBUpdateError, NoSourceFieldError +from dak_exceptions import DBUpdateError, NoSourceFieldError, FileExistsError # suppress some deprecation warnings in squeeze related to sqlalchemy import warnings @@ -890,6 +891,9 @@ class BuildQueue(object): else: os.symlink(targetpath, queuepath) qf.fileid = poolfile.file_id + except FileExistsError: + if not poolfile.identical_to(queuepath): + raise except OSError: return None @@ -948,6 +952,9 @@ class BuildQueue(object): # Always copy files from policy queues as they might move around. import utils utils.copy(source, target) + except FileExistsError: + if not policyqueuefile.identical_to(target): + raise except OSError: return None @@ -1043,6 +1050,24 @@ class ChangePendingFile(object): def __repr__(self): return '' % self.change_pending_file_id + def identical_to(self, filename): + """ + compare size and hash with the given file + + @rtype: bool + @return: true if the given file has the same size and hash as this object; false otherwise + """ + st = os.stat(filename) + if self.size != st.st_size: + return False + + f = open(filename, "r") + sha256sum = apt_pkg.sha256sum(f) + if sha256sum != self.sha256sum: + return False + + return True + __all__.append('ChangePendingFile') ################################################################################ @@ -1392,6 +1417,24 @@ class PoolFile(ORMObject): def not_null_constraints(self): return ['filename', 'md5sum', 'location'] + def identical_to(self, filename): + """ + compare size and hash with the given file + + @rtype: bool + @return: true if the given file has the same size and hash as this object; false otherwise + """ + st = os.stat(filename) + if self.filesize != st.st_size: + return False + + f = open(filename, "r") + sha256sum = apt_pkg.sha256sum(f) + if sha256sum != self.sha256sum: + return False + + return True + __all__.append('PoolFile') @session_wrapper