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Code Issues Releases Wiki Activity

Added symlink support

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This commit is contained in:
Jonas Borgström 2010-10-18 19:43:54 +02:00
parent 54b0c9cb0a
commit be649e8e52
2 changed files with 49 additions and 17 deletions
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55
dedupestore/archiver.py
View file

@ -4,6 +4,7 @@
import zlib
import argparse
import sys
import stat
from datetime import datetime
import msgpack
@ -98,11 +99,17 @@ def extract(self, dest=None):
for item in self.items:
assert item['path'][0] not in ('/', '\\', ':')
path = os.path.join(dest, item['path'])
logging.info(path)
if item['type'] == 'DIRECTORY':
logging.info(path)
if not os.path.exists(path):
os.makedirs(path)
if item['type'] == 'FILE':
elif item['type'] == 'SYMLINK':
logging.info('%s => %s', path, item['source'])
if not os.path.exists(os.path.dirname(path)):
os.makedirs(os.path.dirname(path))
os.symlink(item['source'], path)
elif item['type'] == 'FILE':
logging.info(path)
if not os.path.exists(os.path.dirname(path)):
os.makedirs(os.path.dirname(path))
with open(path, 'wb') as fd:
@ -144,34 +151,48 @@ def delete(self, cache):
del cache.archives[self.name]
cache.save()
def walk(self, path):
st = os.lstat(path)
if stat.S_ISDIR(st.st_mode):
for f in os.listdir(path):
for x in self.walk(os.path.join(path, f)):
yield x
else:
yield path, st
def create(self, name, paths, cache):
if name in cache.archives:
raise NameError('Archive already exists')
for path in paths:
for root, dirs, files in os.walk(unicode(path)):
for d in dirs:
p = os.path.join(root, d)
self.items.append(self.process_dir(p, cache))
for f in files:
p = os.path.join(root, f)
entry = self.process_file(p, cache)
if entry:
self.items.append(entry)
for path, st in self.walk(unicode(path)):
if stat.S_ISDIR(st.st_mode):
self.process_dir(path, st)
elif stat.S_ISLNK(st.st_mode):
self.process_link(path, st)
elif stat.S_ISREG(st.st_mode):
self.process_file(path, st)
else:
logging.error('Unknown file type: %s', path)
self.save(name)
cache.archives[name] = self.id
cache.save()
def process_dir(self, path, cache):
def process_dir(self, path, st):
path = path.lstrip('/\\:')
logging.info(path)
return {'type': 'DIRECTORY', 'path': path}
self.items.append({'type': 'DIRECTORY', 'path': path})
def process_file(self, path, cache):
def process_link(self, path, st):
source = os.readlink(path)
path = path.lstrip('/\\:')
logging.info('%s => %s', path, source)
self.items.append({'type': 'SYMLINK', 'path': path, 'source': source})
def process_file(self, path, st):
try:
fd = open(path, 'rb')
except IOError, e:
logging.error(e)
return
with fd:
path = path.lstrip('/\\:')
logging.info(path)
@ -179,8 +200,8 @@ def process_file(self, path, cache):
size = 0
for chunk in chunkify(fd, CHUNK_SIZE, 30):
size += len(chunk)
chunks.append(self.add_chunk(*cache.add_chunk(chunk)))
return {'type': 'FILE', 'path': path, 'chunks': chunks, 'size': size}
chunks.append(self.add_chunk(*self.cache.add_chunk(chunk)))
self.items.append({'type': 'FILE', 'path': path, 'chunks': chunks, 'size': size})
class Archiver(object):

11
dedupestore/test.py
View file

@ -42,6 +42,17 @@ def test_corrupted_store(self):
fd.close()
self.dedupestore('verify', self.store_path + '::test', exit_code=1)
def test_symlinks(self):
testdir = os.path.join(self.tmpdir, 'linktest')
os.mkdir(testdir)
os.symlink('/tmp/somewhere', os.path.join(testdir, 'link'))
self.dedupestore('create', self.store_path + '::symlinktest', testdir)
dest_dir = os.path.join(self.tmpdir, 'dest')
self.dedupestore('extract', self.store_path + '::symlinktest', dest_dir)
dest = os.path.join(dest_dir, testdir[1:])
self.assertEqual(os.path.islink(os.path.join(dest, 'link')), True)
self.assertEqual(os.readlink(os.path.join(dest, 'link')), '/tmp/somewhere')
if __name__ == '__main__':
unittest.main()