def testLinkSymlink(self): link = "sha1link.txt" fsu.symlinkFile(self._sha1file, link) self.assertSymlink(link) # try to hard link link; this should be a no-op fsu.linkFile(self._sha1file, link) self.assertSymlink(link) self.assertUnlinked(link)
def testSymlinkFile(self): link = "sha1link.txt" fsu.symlinkFile(self._sha1file, link) self.assertSymlink(link) # link again, just to make sure it won't fail fsu.symlinkFile(self._sha1file, link) self.assertSymlink(link) self.assertUnlinked(link)
def dedup(self, dupdir, doSymlink):
""" Moves duplicate entries (based on checksum) into the dupdir. Uses the entry's path to
reconstruct a subdirectory hierarchy in dupdir. This will remove any common prefixes
between dupdir and the file path itself so as to make a useful subdirectory structure.
If doSymlink is true, then the original paths of the files that were moved will be symlinked
back to the canonical file; in addition, it will keep the file entry in the database rather than
removing it."""
logging.info("De-duping database")
if os.path.exists(dupdir) and not len(os.listdir(dupdir)) <= 0:
raise Exception("%s is not empty; refusing to move files" % dupdir)
try:
pathmap = {} # store duplicate paths keyed by file checksum
with sqliteConn(self.database) as cursor:
cursor.execute("""select chksum, path, link from files
where chksum in(
select chksum from files where symlink = 0 group by chksum having count(chksum) > 1)
and symlink = 0
and link = 1
order by chksum, link;""")
for row in cursor:
(chksum, path, islink) = row
if not chksum in pathmap:
# ensure existence of list for checksum
pathmap[chksum] = []
paths = pathmap[chksum]
paths.append(path)
for chksum, paths in pathmap.iteritems():
# the query above will result in single rows for symlinked files, so fix that here
# rather than mucking about with temp tables
paths = filter(lambda path: not os.path.islink(path),
paths)
# we'll have at least two elements due to the inner part of the query above
for path in paths:
dst = dstWithSubdirectory(path, dupdir)
moveFile(
path, dst,
(not doSymlink
)) # don't rm empty dirs if we are symlinking
if not doSymlink:
cursor.execute(REMOVE_ROW, (path, ))
else:
cursor.execute(
"update files set symlink = 1 where path = ?;",
(path, ))
symlinkFile(canonicalPath, path)
logging.info("De-duping complete")
except Exception as einst:
logging.error("Unable to de-dup database: %s" % einst)
raise
def dedup(self, dupdir, doSymlink):
""" Moves duplicate entries (based on checksum) into the dupdir. Uses the entry's path to
reconstruct a subdirectory hierarchy in dupdir. This will remove any common prefixes
between dupdir and the file path itself so as to make a useful subdirectory structure.
If doSymlink is true, then the original paths of the files that were moved will be symlinked
back to the canonical file; in addition, it will keep the file entry in the database rather than
removing it."""
logging.info("De-duping database")
if os.path.exists(dupdir) and not len(os.listdir(dupdir)) <= 0:
raise Exception("%s is not empty; refusing to move files" % dupdir)
try:
pathmap = {} # store duplicate paths keyed by file checksum
with sqliteConn(self.database) as cursor:
cursor.execute("""select chksum, path, link from files
where chksum in(
select chksum from files where symlink = 0 group by chksum having count(chksum) > 1)
and symlink = 0
and link = 1
order by chksum, link;""")
for row in cursor:
(chksum, path, islink) = row
if not chksum in pathmap:
# ensure existence of list for checksum
pathmap[chksum] = []
paths = pathmap[chksum]
paths.append(path)
for chksum, paths in pathmap.iteritems():
# the query above will result in single rows for symlinked files, so fix that here
# rather than mucking about with temp tables
paths = filter(lambda path: not os.path.islink(path), paths)
# we'll have at least two elements due to the inner part of the query above
for path in paths:
dst = dstWithSubdirectory(path, dupdir)
moveFile(path, dst, (not doSymlink)) # don't rm empty dirs if we are symlinking
if not doSymlink:
cursor.execute(REMOVE_ROW, (path, ))
else:
cursor.execute("update files set symlink = 1 where path = ?;", (path, ))
symlinkFile(canonicalPath, path)
logging.info("De-duping complete")
except Exception as einst:
logging.error("Unable to de-dup database: %s" % einst)
raise
def testSymlinkFileBad(self):
self.assertRaises(OSError, lambda: fsu.symlinkFile(None, None))
self.assertRaises(OSError, lambda: fsu.symlinkFile("", ""))
self.assertRaises(OSError, lambda: fsu.symlinkFile(None, ""))
self.assertRaises(OSError, lambda: fsu.symlinkFile("", None))
self.assertRaises(OSError, lambda: fsu.symlinkFile(self._sha1file, ""))
self.assertRaises(OSError, lambda: fsu.symlinkFile(self._sha1file, None))
