4 from collections import deque
7 from twisted.internet import defer, reactor, task
8 from twisted.python.failure import Failure
9 from twisted.python import runtime
10 from twisted.application import service
12 from allmydata.util import fileutil
13 from allmydata.interfaces import IDirectoryNode
14 from allmydata.util import log
15 from allmydata.util.fileutil import precondition_abspath, get_pathinfo, ConflictError
16 from allmydata.util.assertutil import precondition, _assert
17 from allmydata.util.deferredutil import HookMixin
18 from allmydata.util.encodingutil import listdir_filepath, to_filepath, \
19 extend_filepath, unicode_from_filepath, unicode_segments_from, \
20 quote_filepath, quote_local_unicode_path, quote_output, FilenameEncodingError
21 from allmydata.immutable.upload import FileName, Data
22 from allmydata import magicfolderdb, magicpath
25 IN_EXCL_UNLINK = 0x04000000L
27 def get_inotify_module():
29 if sys.platform == "win32":
30 from allmydata.windows import inotify
31 elif runtime.platform.supportsINotify():
32 from twisted.internet import inotify
34 raise NotImplementedError("filesystem notification needed for Magic Folder is not supported.\n"
35 "This currently requires Linux or Windows.")
37 except (ImportError, AttributeError) as e:
39 if sys.platform == "win32":
40 raise NotImplementedError("filesystem notification needed for Magic Folder is not supported.\n"
41 "Windows support requires at least Vista, and has only been tested on Windows 7.")
45 class MagicFolder(service.MultiService):
48 def __init__(self, client, upload_dircap, collective_dircap, local_path_u, dbfile,
49 pending_delay=1.0, clock=reactor):
50 precondition_abspath(local_path_u)
52 service.MultiService.__init__(self)
54 db = magicfolderdb.get_magicfolderdb(dbfile, create_version=(magicfolderdb.SCHEMA_v1, 1))
56 return Failure(Exception('ERROR: Unable to load magic folder db.'))
62 upload_dirnode = self._client.create_node_from_uri(upload_dircap)
63 collective_dirnode = self._client.create_node_from_uri(collective_dircap)
65 self.uploader = Uploader(client, local_path_u, db, upload_dirnode, pending_delay, clock)
66 self.downloader = Downloader(client, local_path_u, db, collective_dirnode, upload_dirnode.get_readonly_uri(), clock)
68 def startService(self):
69 # TODO: why is this being called more than once?
71 return defer.succeed(None)
72 print "%r.startService" % (self,)
73 service.MultiService.startService(self)
74 return self.uploader.start_monitoring()
77 """ready is used to signal us to start
78 processing the upload and download items...
80 d = self.uploader.start_scanning()
81 d2 = self.downloader.start_scanning()
82 d.addCallback(lambda ign: d2)
87 d = self.uploader.stop()
88 d2 = self.downloader.stop()
89 d.addCallback(lambda ign: d2)
92 def remove_service(self):
93 return service.MultiService.disownServiceParent(self)
96 class QueueMixin(HookMixin):
97 def __init__(self, client, local_path_u, db, name, clock):
99 self._local_path_u = local_path_u
100 self._local_filepath = to_filepath(local_path_u)
104 self._hooks = {'processed': None, 'started': None}
105 self.started_d = self.set_hook('started')
107 if not self._local_filepath.exists():
108 raise AssertionError("The '[magic_folder] local.directory' parameter was %s "
109 "but there is no directory at that location."
110 % quote_local_unicode_path(self._local_path_u))
111 if not self._local_filepath.isdir():
112 raise AssertionError("The '[magic_folder] local.directory' parameter was %s "
113 "but the thing at that location is not a directory."
114 % quote_local_unicode_path(self._local_path_u))
116 self._deque = deque()
117 self._lazy_tail = defer.succeed(None)
118 self._stopped = False
121 def _get_filepath(self, relpath_u):
122 self._log("_get_filepath(%r)" % (relpath_u,))
123 return extend_filepath(self._local_filepath, relpath_u.split(u"/"))
125 def _get_relpath(self, filepath):
126 self._log("_get_relpath(%r)" % (filepath,))
127 segments = unicode_segments_from(filepath, self._local_filepath)
128 self._log("segments = %r" % (segments,))
129 return u"/".join(segments)
131 def _count(self, counter_name, delta=1):
132 ctr = 'magic_folder.%s.%s' % (self._name, counter_name)
133 self._log("%s += %r" % (counter_name, delta))
134 self._client.stats_provider.count(ctr, delta)
136 def _logcb(self, res, msg):
137 self._log("%s: %r" % (msg, res))
141 s = "Magic Folder %s %s: %s" % (quote_output(self._client.nickname), self._name, msg)
144 #open("events", "ab+").write(msg)
146 def _append_to_deque(self, relpath_u):
147 self._log("_append_to_deque(%r)" % (relpath_u,))
148 if relpath_u in self._pending or magicpath.should_ignore_file(relpath_u):
150 self._deque.append(relpath_u)
151 self._pending.add(relpath_u)
152 self._count('objects_queued')
154 self._clock.callLater(0, self._turn_deque)
156 def _turn_deque(self):
157 self._log("_turn_deque")
162 item = self._deque.pop()
163 self._log("popped %r" % (item,))
164 self._count('objects_queued', -1)
166 self._log("deque is now empty")
167 self._lazy_tail.addCallback(lambda ign: self._when_queue_is_empty())
169 self._lazy_tail.addCallback(lambda ign: self._process(item))
170 self._lazy_tail.addBoth(self._call_hook, 'processed')
171 self._lazy_tail.addErrback(log.err)
172 self._lazy_tail.addCallback(lambda ign: task.deferLater(self._clock, self._turn_delay, self._turn_deque))
175 class Uploader(QueueMixin):
176 def __init__(self, client, local_path_u, db, upload_dirnode, pending_delay, clock):
177 QueueMixin.__init__(self, client, local_path_u, db, 'uploader', clock)
179 self.is_ready = False
181 if not IDirectoryNode.providedBy(upload_dirnode):
182 raise AssertionError("The URI in '%s' does not refer to a directory."
183 % os.path.join('private', 'magic_folder_dircap'))
184 if upload_dirnode.is_unknown() or upload_dirnode.is_readonly():
185 raise AssertionError("The URI in '%s' is not a writecap to a directory."
186 % os.path.join('private', 'magic_folder_dircap'))
188 self._upload_dirnode = upload_dirnode
189 self._inotify = get_inotify_module()
190 self._notifier = self._inotify.INotify()
191 self._pending = set()
193 if hasattr(self._notifier, 'set_pending_delay'):
194 self._notifier.set_pending_delay(pending_delay)
196 # TODO: what about IN_MOVE_SELF and IN_UNMOUNT?
198 self.mask = ( self._inotify.IN_CREATE
199 | self._inotify.IN_CLOSE_WRITE
200 | self._inotify.IN_MOVED_TO
201 | self._inotify.IN_MOVED_FROM
202 | self._inotify.IN_DELETE
203 | self._inotify.IN_ONLYDIR
206 self._notifier.watch(self._local_filepath, mask=self.mask, callbacks=[self._notify],
209 def start_monitoring(self):
210 self._log("start_monitoring")
211 d = defer.succeed(None)
212 d.addCallback(lambda ign: self._notifier.startReading())
213 d.addCallback(lambda ign: self._count('dirs_monitored'))
214 d.addBoth(self._call_hook, 'started')
219 self._notifier.stopReading()
220 self._count('dirs_monitored', -1)
221 if hasattr(self._notifier, 'wait_until_stopped'):
222 d = self._notifier.wait_until_stopped()
224 d = defer.succeed(None)
225 d.addCallback(lambda ign: self._lazy_tail)
228 def start_scanning(self):
229 self._log("start_scanning")
231 self._pending = self._db.get_all_relpaths()
232 self._log("all_files %r" % (self._pending))
234 def _add_pending(ign):
235 # This adds all of the files that were in the db but not already processed
236 # (normally because they have been deleted on disk).
237 self._log("adding %r" % (self._pending))
238 self._deque.extend(self._pending)
239 d.addCallback(_add_pending)
240 d.addCallback(lambda ign: self._turn_deque())
243 def _scan(self, reldir_u):
244 self._log("scan %r" % (reldir_u,))
245 fp = self._get_filepath(reldir_u)
247 children = listdir_filepath(fp)
248 except EnvironmentError:
249 raise Exception("WARNING: magic folder: permission denied on directory %s"
250 % quote_filepath(fp))
251 except FilenameEncodingError:
252 raise Exception("WARNING: magic folder: could not list directory %s due to a filename encoding error"
253 % quote_filepath(fp))
255 d = defer.succeed(None)
256 for child in children:
257 _assert(isinstance(child, unicode), child=child)
258 d.addCallback(lambda ign, child=child:
259 ("%s/%s" % (reldir_u, child) if reldir_u else child))
260 def _add_pending(relpath_u):
261 if magicpath.should_ignore_file(relpath_u):
264 self._pending.add(relpath_u)
266 d.addCallback(_add_pending)
267 # This call to _process doesn't go through the deque, and probably should.
268 d.addCallback(self._process)
269 d.addBoth(self._call_hook, 'processed')
270 d.addErrback(log.err)
274 def _notify(self, opaque, path, events_mask):
275 self._log("inotify event %r, %r, %r\n" % (opaque, path, ', '.join(self._inotify.humanReadableMask(events_mask))))
277 # We filter out IN_CREATE events not associated with a directory.
278 # Acting on IN_CREATE for files could cause us to read and upload
279 # a possibly-incomplete file before the application has closed it.
280 # There should always be an IN_CLOSE_WRITE after an IN_CREATE, I think.
281 # It isn't possible to avoid watching for IN_CREATE at all, because
282 # it is the only event notified for a directory creation.
284 if ((events_mask & self._inotify.IN_CREATE) != 0 and
285 (events_mask & self._inotify.IN_ISDIR) == 0):
286 self._log("ignoring inotify event for creation of file %r\n" % (path,))
289 relpath_u = self._get_relpath(path)
290 self._append_to_deque(relpath_u)
292 def _when_queue_is_empty(self):
293 return defer.succeed(None)
295 def _process(self, relpath_u):
297 self._log("_process(%r)" % (relpath_u,))
298 if relpath_u is None:
300 precondition(isinstance(relpath_u, unicode), relpath_u)
301 precondition(not relpath_u.endswith(u'/'), relpath_u)
303 d = defer.succeed(None)
305 def _maybe_upload(val, now=None):
308 fp = self._get_filepath(relpath_u)
309 pathinfo = get_pathinfo(unicode_from_filepath(fp))
311 self._log("about to remove %r from pending set %r" %
312 (relpath_u, self._pending))
313 self._pending.remove(relpath_u)
314 encoded_path_u = magicpath.path2magic(relpath_u)
316 if not pathinfo.exists:
317 # FIXME merge this with the 'isfile' case.
318 self._log("notified object %s disappeared (this is normal)" % quote_filepath(fp))
319 self._count('objects_disappeared')
320 if not self._db.check_file_db_exists(relpath_u):
323 last_downloaded_timestamp = now
324 last_downloaded_uri = self._db.get_last_downloaded_uri(relpath_u)
326 current_version = self._db.get_local_file_version(relpath_u)
327 if current_version is None:
329 elif self._db.is_new_file(pathinfo, relpath_u):
330 new_version = current_version + 1
332 self._log("Not uploading %r" % (relpath_u,))
333 self._count('objects_not_uploaded')
336 metadata = { 'version': new_version,
338 'last_downloaded_timestamp': last_downloaded_timestamp }
339 if last_downloaded_uri is not None:
340 metadata['last_downloaded_uri'] = last_downloaded_uri
342 empty_uploadable = Data("", self._client.convergence)
343 d2 = self._upload_dirnode.add_file(encoded_path_u, empty_uploadable,
344 metadata=metadata, overwrite=True)
346 def _add_db_entry(filenode):
347 filecap = filenode.get_uri()
348 self._db.did_upload_version(relpath_u, new_version, filecap,
349 last_downloaded_uri, last_downloaded_timestamp, pathinfo)
350 self._count('files_uploaded')
351 d2.addCallback(_add_db_entry)
353 elif pathinfo.islink:
354 self.warn("WARNING: cannot upload symlink %s" % quote_filepath(fp))
357 if not getattr(self._notifier, 'recursive_includes_new_subdirectories', False):
358 self._notifier.watch(fp, mask=self.mask, callbacks=[self._notify], recursive=True)
360 uploadable = Data("", self._client.convergence)
361 encoded_path_u += magicpath.path2magic(u"/")
362 self._log("encoded_path_u = %r" % (encoded_path_u,))
363 upload_d = self._upload_dirnode.add_file(encoded_path_u, uploadable, metadata={"version":0}, overwrite=True)
365 self._log("created subdirectory %r" % (relpath_u,))
366 self._count('directories_created')
368 self._log("failed to create subdirectory %r" % (relpath_u,))
370 upload_d.addCallbacks(_succeeded, _failed)
371 upload_d.addCallback(lambda ign: self._scan(relpath_u))
373 elif pathinfo.isfile:
374 last_downloaded_uri = self._db.get_last_downloaded_uri(relpath_u)
375 last_downloaded_timestamp = now
377 current_version = self._db.get_local_file_version(relpath_u)
378 if current_version is None:
380 elif self._db.is_new_file(pathinfo, relpath_u):
381 new_version = current_version + 1
383 self._log("Not uploading %r" % (relpath_u,))
384 self._count('objects_not_uploaded')
387 metadata = { 'version': new_version,
388 'last_downloaded_timestamp': last_downloaded_timestamp }
389 if last_downloaded_uri is not None:
390 metadata['last_downloaded_uri'] = last_downloaded_uri
392 uploadable = FileName(unicode_from_filepath(fp), self._client.convergence)
393 d2 = self._upload_dirnode.add_file(encoded_path_u, uploadable,
394 metadata=metadata, overwrite=True)
396 def _add_db_entry(filenode):
397 filecap = filenode.get_uri()
398 last_downloaded_uri = metadata.get('last_downloaded_uri', None)
399 self._db.did_upload_version(relpath_u, new_version, filecap,
400 last_downloaded_uri, last_downloaded_timestamp, pathinfo)
401 self._count('files_uploaded')
402 d2.addCallback(_add_db_entry)
405 self.warn("WARNING: cannot process special file %s" % quote_filepath(fp))
408 d.addCallback(_maybe_upload)
411 self._count('objects_succeeded')
414 self._count('objects_failed')
415 self._log("%s while processing %r" % (f, relpath_u))
417 d.addCallbacks(_succeeded, _failed)
420 def _get_metadata(self, encoded_path_u):
422 d = self._upload_dirnode.get_metadata_for(encoded_path_u)
427 def _get_filenode(self, encoded_path_u):
429 d = self._upload_dirnode.get(encoded_path_u)
435 class WriteFileMixin(object):
438 def _get_conflicted_filename(self, abspath_u):
439 return abspath_u + u".conflict"
441 def _write_downloaded_file(self, abspath_u, file_contents, is_conflict=False, now=None):
442 self._log("_write_downloaded_file(%r, <%d bytes>, is_conflict=%r, now=%r)"
443 % (abspath_u, len(file_contents), is_conflict, now))
445 # 1. Write a temporary file, say .foo.tmp.
446 # 2. is_conflict determines whether this is an overwrite or a conflict.
447 # 3. Set the mtime of the replacement file to be T seconds before the
448 # current local time.
449 # 4. Perform a file replacement with backup filename foo.backup,
450 # replaced file foo, and replacement file .foo.tmp. If any step of
451 # this operation fails, reclassify as a conflict and stop.
453 # Returns the path of the destination file.
455 precondition_abspath(abspath_u)
456 replacement_path_u = abspath_u + u".tmp" # FIXME more unique
457 backup_path_u = abspath_u + u".backup"
461 # ensure parent directory exists
462 head, tail = os.path.split(abspath_u)
464 fileutil.make_dirs(head, mode)
466 fileutil.write(replacement_path_u, file_contents)
467 os.utime(replacement_path_u, (now, now - self.FUDGE_SECONDS))
469 print "0x00 ------------ <><> is conflict; calling _rename_conflicted_file... %r %r" % (abspath_u, replacement_path_u)
470 return self._rename_conflicted_file(abspath_u, replacement_path_u)
473 fileutil.replace_file(abspath_u, replacement_path_u, backup_path_u)
475 except fileutil.ConflictError:
476 return self._rename_conflicted_file(abspath_u, replacement_path_u)
478 def _rename_conflicted_file(self, abspath_u, replacement_path_u):
479 self._log("_rename_conflicted_file(%r, %r)" % (abspath_u, replacement_path_u))
481 conflict_path_u = self._get_conflicted_filename(abspath_u)
482 print "XXX rename %r %r" % (replacement_path_u, conflict_path_u)
483 if os.path.isfile(replacement_path_u):
484 print "%r exists" % (replacement_path_u,)
485 if os.path.isfile(conflict_path_u):
486 print "%r exists" % (conflict_path_u,)
488 fileutil.rename_no_overwrite(replacement_path_u, conflict_path_u)
489 return conflict_path_u
491 def _rename_deleted_file(self, abspath_u):
492 self._log('renaming deleted file to backup: %s' % (abspath_u,))
494 fileutil.rename_no_overwrite(abspath_u, abspath_u + u'.backup')
496 # XXX is this the correct error?
497 self._log("Already gone: '%s'" % (abspath_u,))
501 class Downloader(QueueMixin, WriteFileMixin):
502 REMOTE_SCAN_INTERVAL = 3 # facilitates tests
504 def __init__(self, client, local_path_u, db, collective_dirnode, upload_readonly_dircap, clock):
505 QueueMixin.__init__(self, client, local_path_u, db, 'downloader', clock)
507 if not IDirectoryNode.providedBy(collective_dirnode):
508 raise AssertionError("The URI in '%s' does not refer to a directory."
509 % os.path.join('private', 'collective_dircap'))
510 if collective_dirnode.is_unknown() or not collective_dirnode.is_readonly():
511 raise AssertionError("The URI in '%s' is not a readonly cap to a directory."
512 % os.path.join('private', 'collective_dircap'))
514 self._collective_dirnode = collective_dirnode
515 self._upload_readonly_dircap = upload_readonly_dircap
517 self._turn_delay = self.REMOTE_SCAN_INTERVAL
518 self._download_scan_batch = {} # path -> [(filenode, metadata)]
520 def start_scanning(self):
521 self._log("start_scanning")
522 files = self._db.get_all_relpaths()
523 self._log("all files %s" % files)
525 d = self._scan_remote_collective()
526 d.addBoth(self._logcb, "after _scan_remote_collective 0")
532 d = defer.succeed(None)
533 d.addCallback(lambda ign: self._lazy_tail)
536 def _should_download(self, relpath_u, remote_version):
538 _should_download returns a bool indicating whether or not a remote object should be downloaded.
539 We check the remote metadata version against our magic-folder db version number;
542 self._log("_should_download(%r, %r)" % (relpath_u, remote_version))
543 if magicpath.should_ignore_file(relpath_u):
547 v = self._db.get_local_file_version(relpath_u)
548 self._log("v = %r" % (v,))
549 return (v is None or v < remote_version)
551 def _get_local_latest(self, relpath_u):
553 _get_local_latest takes a unicode path string checks to see if this file object
554 exists in our magic-folder db; if not then return None
555 else check for an entry in our magic-folder db and return the version number.
557 if not self._get_filepath(relpath_u).exists():
559 return self._db.get_local_file_version(relpath_u)
561 def _get_collective_latest_file(self, filename):
563 _get_collective_latest_file takes a file path pointing to a file managed by
564 magic-folder and returns a deferred that fires with the two tuple containing a
565 file node and metadata for the latest version of the file located in the
566 magic-folder collective directory.
568 collective_dirmap_d = self._collective_dirnode.list()
569 def scan_collective(result):
570 list_of_deferreds = []
571 for dir_name in result.keys():
572 # XXX make sure it's a directory
573 d = defer.succeed(None)
574 d.addCallback(lambda x, dir_name=dir_name: result[dir_name][0].get_child_and_metadata(filename))
575 list_of_deferreds.append(d)
576 deferList = defer.DeferredList(list_of_deferreds, consumeErrors=True)
578 collective_dirmap_d.addCallback(scan_collective)
579 def highest_version(deferredList):
583 for success, result in deferredList:
585 if result[1]['version'] > max_version:
586 node, metadata = result
587 max_version = result[1]['version']
588 return node, metadata
589 collective_dirmap_d.addCallback(highest_version)
590 return collective_dirmap_d
592 def _append_to_batch(self, name, file_node, metadata):
593 if self._download_scan_batch.has_key(name):
594 self._download_scan_batch[name] += [(file_node, metadata)]
596 self._download_scan_batch[name] = [(file_node, metadata)]
598 def _scan_remote(self, nickname, dirnode):
599 self._log("_scan_remote nickname %r" % (nickname,))
601 def scan_listing(listing_map):
602 for encoded_relpath_u in listing_map.keys():
603 relpath_u = magicpath.magic2path(encoded_relpath_u)
604 self._log("found %r" % (relpath_u,))
606 file_node, metadata = listing_map[encoded_relpath_u]
607 local_version = self._get_local_latest(relpath_u)
608 remote_version = metadata.get('version', None)
609 self._log("%r has local version %r, remote version %r" % (relpath_u, local_version, remote_version))
610 if local_version is None or remote_version is None or local_version < remote_version:
611 self._log("%r added to download queue" % (relpath_u,))
612 self._append_to_batch(relpath_u, file_node, metadata)
613 d.addCallback(scan_listing)
614 d.addBoth(self._logcb, "end of _scan_remote")
617 def _scan_remote_collective(self):
618 self._log("_scan_remote_collective")
619 self._download_scan_batch = {} # XXX
621 d = self._collective_dirnode.list()
622 def scan_collective(dirmap):
623 d2 = defer.succeed(None)
624 for dir_name in dirmap:
625 (dirnode, metadata) = dirmap[dir_name]
626 if dirnode.get_readonly_uri() != self._upload_readonly_dircap:
627 d2.addCallback(lambda ign, dir_name=dir_name: self._scan_remote(dir_name, dirnode))
629 self._log("failed to scan DMD for client %r: %s" % (dir_name, f))
630 # XXX what should we do to make this failure more visible to users?
633 d.addCallback(scan_collective)
634 d.addCallback(self._filter_scan_batch)
635 d.addCallback(self._add_batch_to_download_queue)
638 def _add_batch_to_download_queue(self, result):
639 self._log("result = %r" % (result,))
640 self._log("deque = %r" % (self._deque,))
641 self._deque.extend(result)
642 self._log("deque after = %r" % (self._deque,))
643 self._count('objects_queued', len(result))
645 def _filter_scan_batch(self, result):
646 self._log("_filter_scan_batch")
647 extension = [] # consider whether this should be a dict
648 for relpath_u in self._download_scan_batch.keys():
649 if relpath_u in self._pending:
651 file_node, metadata = max(self._download_scan_batch[relpath_u], key=lambda x: x[1]['version'])
652 if self._should_download(relpath_u, metadata['version']):
653 extension += [(relpath_u, file_node, metadata)]
655 self._log("Excluding %r" % (relpath_u,))
656 self._count('objects_excluded')
657 self._call_hook(None, 'processed')
660 def _when_queue_is_empty(self):
661 d = task.deferLater(self._clock, self._turn_delay, self._scan_remote_collective)
662 d.addBoth(self._logcb, "after _scan_remote_collective 1")
663 d.addCallback(lambda ign: self._turn_deque())
666 def _process(self, item, now=None):
668 self._log("_process(%r)" % (item,))
671 (relpath_u, file_node, metadata) = item
672 fp = self._get_filepath(relpath_u)
673 abspath_u = unicode_from_filepath(fp)
674 conflict_path_u = self._get_conflicted_filename(abspath_u)
676 d = defer.succeed(None)
678 def do_update_db(written_abspath_u):
679 filecap = file_node.get_uri()
680 last_uploaded_uri = metadata.get('last_uploaded_uri', None)
681 last_downloaded_uri = filecap
682 last_downloaded_timestamp = now
683 written_pathinfo = get_pathinfo(written_abspath_u)
685 if not written_pathinfo.exists and not metadata.get('deleted', False):
686 raise Exception("downloaded object %s disappeared" % quote_local_unicode_path(written_abspath_u))
688 self._db.did_upload_version(relpath_u, metadata['version'], last_uploaded_uri,
689 last_downloaded_uri, last_downloaded_timestamp, written_pathinfo)
690 self._count('objects_downloaded')
692 self._log("download failed: %s" % (str(f),))
693 self._count('objects_failed')
696 if os.path.isfile(conflict_path_u):
698 raise ConflictError("download failed: already conflicted: %r" % (relpath_u,))
702 if self._db.check_file_db_exists(relpath_u):
703 dmd_last_downloaded_uri = metadata.get('last_downloaded_uri', None)
704 local_last_downloaded_uri = self._db.get_last_downloaded_uri(relpath_u)
705 print "metadata %r" % (metadata,)
706 print "<<<<--- if %r != %r" % (dmd_last_downloaded_uri, local_last_downloaded_uri)
707 if dmd_last_downloaded_uri is not None and local_last_downloaded_uri is not None:
708 if dmd_last_downloaded_uri != local_last_downloaded_uri:
710 self._count('objects_conflicted')
712 #dmd_last_uploaded_uri = metadata.get('last_uploaded_uri', None)
713 #local_last_uploaded_uri = ...
715 if relpath_u.endswith(u"/"):
716 if metadata.get('deleted', False):
717 self._log("rmdir(%r) ignored" % (abspath_u,))
719 self._log("mkdir(%r)" % (abspath_u,))
720 d.addCallback(lambda ign: fileutil.make_dirs(abspath_u))
721 d.addCallback(lambda ign: abspath_u)
723 if metadata.get('deleted', False):
724 d.addCallback(lambda ign: self._rename_deleted_file(abspath_u))
726 d.addCallback(lambda ign: file_node.download_best_version())
727 d.addCallback(lambda contents: self._write_downloaded_file(abspath_u, contents,
728 is_conflict=is_conflict))
730 d.addCallbacks(do_update_db, failed)
732 def trap_conflicts(f):
733 f.trap(ConflictError)
735 d.addErrback(trap_conflicts)