def test_diff(self):
"""Test making a diff"""
sel1 = selection.Select(Path("testfiles/dir1"))
diffdir.write_block_iter(diffdir.SigTarBlockIter(sel1.set_iter()),
"testfiles/output/dir1.sigtar")
sigtar_fp = open("testfiles/output/dir1.sigtar", "rb")
sel2 = selection.Select(Path("testfiles/dir2"))
delta_tar = diffdir.DirDelta(sel2.set_iter(), sigtar_fp)
diffdir.write_block_iter(delta_tar,
"testfiles/output/dir1dir2.difftar")
changed_files = ["diff/changeable_permission",
"diff/regular_file",
"snapshot/symbolic_link/",
"deleted/deleted_file",
"snapshot/directory_to_file",
"snapshot/file_to_directory/"]
for tarinfo in tarfile.TarFile("testfiles/output/dir1dir2.difftar",
"r"):
tiname = util.get_tarinfo_name(tarinfo)
if tiname in changed_files:
changed_files.remove(tiname)
assert not changed_files, ("Following files not found:\n"
+ "\n".join(changed_files))
def test_diff2(self):
"""Another diff test - this one involves multivol support
(requires rdiff to be installed to pass)"""
sel1 = selection.Select(Path("testfiles/dir2"))
diffdir.write_block_iter(diffdir.SigTarBlockIter(sel1.set_iter()),
"testfiles/output/dir2.sigtar")
sigtar_fp = open("testfiles/output/dir2.sigtar", "rb")
sel2 = selection.Select(Path("testfiles/dir3"))
delta_tar = diffdir.DirDelta(sel2.set_iter(), sigtar_fp)
diffdir.write_block_iter(delta_tar,
"testfiles/output/dir2dir3.difftar")
buffer = ""
tf = tarfile.TarFile("testfiles/output/dir2dir3.difftar", "r")
for tarinfo in tf:
if tarinfo.name.startswith("multivol_diff/"):
buffer += tf.extractfile(tarinfo).read()
assert 3000000 < len(buffer) < 4000000
fout = open("testfiles/output/largefile.delta", "wb")
fout.write(buffer)
fout.close()
assert not os.system("rdiff patch testfiles/dir2/largefile "
"testfiles/output/largefile.delta "
"testfiles/output/largefile.patched")
dir3large = open("testfiles/dir3/largefile", "rb").read()
patchedlarge = open("testfiles/output/largefile.patched", "rb").read()
assert dir3large == patchedlarge
def patch_diff_tarfile( base_path, diff_tarfile, restrict_index=() ):
"""Patch given Path object using delta tarfile (as in tarfile.TarFile)
If restrict_index is set, ignore any deltas in diff_tarfile that
don't start with restrict_index.
"""
if base_path.exists():
path_iter = selection.Select( base_path ).set_iter()
else:
path_iter = empty_iter() # probably untarring full backup
diff_path_iter = difftar2path_iter( diff_tarfile )
if restrict_index:
diff_path_iter = filter_path_iter( diff_path_iter, restrict_index )
collated = diffdir.collate2iters( path_iter, diff_path_iter )
ITR = IterTreeReducer( PathPatcher, [base_path] )
for basis_path, diff_ropath in collated:
if basis_path:
log.Info( _( "Patching %s" ) % ( basis_path.get_relative_path(), ),
log.InfoCode.patch_file_patching,
util.escape( basis_path.get_relative_path() ) )
ITR( basis_path.index, basis_path, diff_ropath )
else:
log.Info( _( "Patching %s" ) % ( diff_ropath.get_relative_path(), ),
log.InfoCode.patch_file_patching,
util.escape( diff_ropath.get_relative_path() ) )
ITR( diff_ropath.index, basis_path, diff_ropath )
ITR.Finish()
base_path.setdata()
def test_empty_diff(self):
"""Test producing a diff against same sig; should be len 0"""
self.empty_diff_schema("testfiles/various_file_types")
select = selection.Select(Path("testfiles/various_file_types"))
select.set_iter()
sigtar = diffdir.SigTarBlockIter(select)
diffdir.write_block_iter(sigtar, "testfiles/output/sigtar")
sigtar_fp = open("testfiles/output/sigtar")
select2 = selection.Select(Path("testfiles/various_file_types"))
select2.set_iter()
diffdir.write_block_iter(diffdir.DirDelta(select2, sigtar_fp),
"testfiles/output/difftar")
size = os.stat("testfiles/output/difftar").st_size # @UnusedVariable
def test_empty_diff(self):
u"""Test producing a diff against same sig; should be len 0"""
self.empty_diff_schema(u"{0}/testfiles/various_file_types".format(_runtest_dir))
select = selection.Select(Path(u"{0}/testfiles/various_file_types".format(_runtest_dir)))
select.set_iter()
sigtar = diffdir.SigTarBlockIter(select)
diffdir.write_block_iter(sigtar, u"{0}/testfiles/output/sigtar".format(_runtest_dir))
sigtar_fp = open(u"{0}/testfiles/output/sigtar".format(_runtest_dir), u"rb")
select2 = selection.Select(Path(u"{0}/testfiles/various_file_types".format(_runtest_dir)))
select2.set_iter()
diffdir.write_block_iter(diffdir.DirDelta(select2, sigtar_fp),
u"{0}/testfiles/output/difftar".format(_runtest_dir))
size = os.stat(u"{0}/testfiles/output/difftar".format(_runtest_dir)).st_size
def deltree(self):
"""Remove self by recursively deleting files under it"""
from duplicity import selection # todo: avoid circ. dep. issue
log.Info(_("Deleting tree %s") % util.ufn(self.name))
itr = IterTreeReducer(PathDeleter, [])
for path in selection.Select(self).set_iter():
itr(path.index, path)
itr.Finish()
self.setdata()
def empty_diff_schema(self, dirname):
"""Given directory name, make sure can tell when nothing changes"""
select = selection.Select(Path(dirname))
select.set_iter()
sigtar = diffdir.SigTarBlockIter(select)
diffdir.write_block_iter(sigtar, "testfiles/output/sigtar")
sigtar_fp = open("testfiles/output/sigtar")
select2 = selection.Select(Path(dirname))
select2.set_iter()
diffdir.write_block_iter(diffdir.DirDelta(select2, sigtar_fp),
"testfiles/output/difftar")
size = os.stat("testfiles/output/difftar").st_size
assert size == 0 or size == 10240, size # 10240 is size of one record
if size != 0:
fin = open("testfiles/output/difftar", "rb")
diff_buf = fin.read()
assert not fin.close()
assert diff_buf == '\0' * 10240
def testsig(self):
"""Test producing tar signature of various file types"""
select = selection.Select(Path("testfiles/various_file_types"))
select.set_iter()
sigtar = diffdir.SigTarBlockIter(select)
diffdir.write_block_iter(sigtar, "testfiles/output/sigtar")
i = 0
for tarinfo in tarfile.TarFile("testfiles/output/sigtar", "r"): # @UnusedVariable
i += 1
assert i >= 5, "There should be at least 5 files in sigtar"
def testsig(self):
u"""Test producing tar signature of various file types"""
select = selection.Select(Path(u"{0}/testfiles/various_file_types".format(_runtest_dir)))
select.set_iter()
sigtar = diffdir.SigTarBlockIter(select)
diffdir.write_block_iter(sigtar, u"{0}/testfiles/output/sigtar".format(_runtest_dir))
i = 0
for tarinfo in tarfile.TarFile(u"{0}/testfiles/output/sigtar".format(_runtest_dir), u"r"):
i += 1
assert i >= 5, u"There should be at least 5 files in sigtar"
def total_sequence(self, filelist):
"""Test signatures, diffing, and patching on directory list"""
assert len(filelist) >= 2
self.deltmp()
assert not os.system("cp -pR %s testfiles/output/sequence" %
(filelist[0], ))
seq_path = Path("testfiles/output/sequence")
sig = Path("testfiles/output/sig.tar")
diff = Path("testfiles/output/diff.tar")
for dirname in filelist[1:]:
new_path = Path(dirname)
diffdir.write_block_iter(
diffdir.DirSig(selection.Select(seq_path).set_iter()), sig)
diffdir.write_block_iter(
diffdir.DirDelta(
selection.Select(new_path).set_iter(), sig.open("rb")),
diff)
patchdir.Patch(seq_path, diff.open("rb"))
assert seq_path.compare_recursive(new_path, 1)
def test_dirdelta_write_sig(self):
"""Test simultaneous delta and sig generation
Generate signatures and deltas of dirs1, 2, 3, 4 and compare
those produced by DirDelta_WriteSig and other methods.
"""
deltadir1 = Path("testfiles/output/dir.deltatar1") # @UnusedVariable
deltadir2 = Path("testfiles/output/dir.deltatar2") # @UnusedVariable
cur_full_sigs = Path("testfiles/output/fullsig.dir1")
cur_dir = Path("testfiles/dir1")
get_sel = lambda cur_dir: selection.Select(cur_dir).set_iter()
diffdir.write_block_iter(diffdir.SigTarBlockIter(get_sel(cur_dir)),
cur_full_sigs)
sigstack = [cur_full_sigs]
for dirname in ['dir2', 'dir3', 'dir4']:
# print "Processing ", dirname
old_dir = cur_dir # @UnusedVariable
cur_dir = Path("testfiles/" + dirname)
old_full_sigs = cur_full_sigs
cur_full_sigs = Path("testfiles/output/fullsig." + dirname)
delta1 = Path("testfiles/output/delta1." + dirname)
delta2 = Path("testfiles/output/delta2." + dirname)
incsig = Path("testfiles/output/incsig." + dirname)
# Write old-style delta to deltadir1
diffdir.write_block_iter(diffdir.DirDelta(get_sel(cur_dir),
old_full_sigs.open("rb")),
delta1)
# Write new signature and delta to deltadir2 and sigdir2, compare
block_iter = diffdir.DirDelta_WriteSig(
get_sel(cur_dir),
[p.open("rb") for p in sigstack],
incsig.open("wb"))
sigstack.append(incsig)
diffdir.write_block_iter(block_iter, delta2)
# print delta1.name, delta2.name
compare_tar(delta1.open("rb"), delta2.open("rb"))
assert not os.system("cmp %s %s" % (delta1.name, delta2.name))
# Write old-style signature to cur_full_sigs
diffdir.write_block_iter(diffdir.SigTarBlockIter(get_sel(cur_dir)),
cur_full_sigs)
def set_selection():
"""Return selection iter starting at filename with arguments applied"""
global select_opts, select_files
sel = selection.Select(globals.local_path)
sel.ParseArgs(select_opts, select_files)
globals.select = sel.set_iter()
def get_sel(self, path):
u"""Get selection iter over the given directory"""
return selection.Select(path).set_iter()
def compare_recursive(self, other, verbose=None):
"""Compare self to other Path, descending down directories"""
from duplicity import selection # todo: avoid circ. dep. issue
selfsel = selection.Select(self).set_iter()
othersel = selection.Select(other).set_iter()
return Iter.equal(selfsel, othersel, verbose)
