1 # Copyright 2011-2012 GRNET S.A. All rights reserved.
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4 # without modification, are permitted provided that the following
7 # 1. Redistributions of source code must retain the above
8 # copyright notice, this list of conditions and the following
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12 # copyright notice, this list of conditions and the following
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32 # or implied, of GRNET S.A.
37 import uuid as uuidlib
42 from base import DEFAULT_QUOTA, DEFAULT_VERSIONING, NotAllowedError, QuotaError, BaseBackend
44 # Stripped-down version of the HashMap class found in tools.
47 def __init__(self, blocksize, blockhash):
48 super(HashMap, self).__init__()
49 self.blocksize = blocksize
50 self.blockhash = blockhash
52 def _hash_raw(self, v):
53 h = hashlib.new(self.blockhash)
59 return self._hash_raw('')
61 return self.__getitem__(0)
67 h += [('\x00' * len(h[0]))] * (s - len(h))
69 h = [self._hash_raw(h[x] + h[x + 1]) for x in range(0, len(h), 2)]
72 # Default modules and settings.
73 DEFAULT_DB_MODULE = 'pithos.backends.lib.sqlalchemy'
74 DEFAULT_DB_CONNECTION = 'sqlite:///backend.db'
75 DEFAULT_BLOCK_MODULE = 'pithos.backends.lib.hashfiler'
76 DEFAULT_BLOCK_PATH = 'data/'
77 DEFAULT_BLOCK_UMASK = 0o022
78 #DEFAULT_QUEUE_MODULE = 'pithos.backends.lib.rabbitmq'
79 #DEFAULT_QUEUE_CONNECTION = 'rabbitmq://guest:guest@localhost:5672/pithos'
81 QUEUE_MESSAGE_KEY_PREFIX = 'pithos.%s'
82 QUEUE_CLIENT_ID = 'pithos'
83 QUEUE_INSTANCE_ID = '1'
85 ( CLUSTER_NORMAL, CLUSTER_HISTORY, CLUSTER_DELETED ) = range(3)
92 logger = logging.getLogger(__name__)
95 def backend_method(func=None, autocommit=1):
98 return backend_method(func, autocommit)
103 def fn(self, *args, **kw):
104 self.wrapper.execute()
107 ret = func(self, *args, **kw)
108 for m in self.messages:
110 self.wrapper.commit()
113 self.wrapper.rollback()
118 class ModularBackend(BaseBackend):
119 """A modular backend.
121 Uses modules for SQL functions and storage.
124 def __init__(self, db_module=None, db_connection=None,
125 block_module=None, block_path=None, block_umask=None,
126 queue_module=None, queue_connection=None):
127 db_module = db_module or DEFAULT_DB_MODULE
128 db_connection = db_connection or DEFAULT_DB_CONNECTION
129 block_module = block_module or DEFAULT_BLOCK_MODULE
130 block_path = block_path or DEFAULT_BLOCK_PATH
131 block_umask = block_umask or DEFAULT_BLOCK_UMASK
132 #queue_module = queue_module or DEFAULT_QUEUE_MODULE
133 #queue_connection = queue_connection or DEFAULT_QUEUE_CONNECTION
135 self.hash_algorithm = 'sha256'
136 self.block_size = 4 * 1024 * 1024 # 4MB
138 self.default_policy = {'quota': DEFAULT_QUOTA, 'versioning': DEFAULT_VERSIONING}
142 return sys.modules[m]
144 self.db_module = load_module(db_module)
145 self.wrapper = self.db_module.DBWrapper(db_connection)
146 params = {'wrapper': self.wrapper}
147 self.permissions = self.db_module.Permissions(**params)
148 for x in ['READ', 'WRITE']:
149 setattr(self, x, getattr(self.db_module, x))
150 self.node = self.db_module.Node(**params)
151 for x in ['ROOTNODE', 'SERIAL', 'HASH', 'SIZE', 'TYPE', 'MTIME', 'MUSER', 'UUID', 'CHECKSUM', 'CLUSTER', 'MATCH_PREFIX', 'MATCH_EXACT']:
152 setattr(self, x, getattr(self.db_module, x))
154 self.block_module = load_module(block_module)
155 params = {'path': block_path,
156 'block_size': self.block_size,
157 'hash_algorithm': self.hash_algorithm,
158 'umask': block_umask}
159 self.store = self.block_module.Store(**params)
161 if queue_module and queue_connection:
162 self.queue_module = load_module(queue_module)
163 params = {'exchange': queue_connection,
164 'client_id': QUEUE_CLIENT_ID}
165 self.queue = self.queue_module.Queue(**params)
168 def send(self, *args):
174 self.queue = NoQueue()
181 def list_accounts(self, user, marker=None, limit=10000):
182 """Return a list of accounts the user can access."""
184 logger.debug("list_accounts: %s %s %s", user, marker, limit)
185 allowed = self._allowed_accounts(user)
186 start, limit = self._list_limits(allowed, marker, limit)
187 return allowed[start:start + limit]
190 def get_account_meta(self, user, account, domain, until=None, include_user_defined=True):
191 """Return a dictionary with the account metadata for the domain."""
193 logger.debug("get_account_meta: %s %s %s", account, domain, until)
194 path, node = self._lookup_account(account, user == account)
196 if until or node is None or account not in self._allowed_accounts(user):
197 raise NotAllowedError
199 props = self._get_properties(node, until)
200 mtime = props[self.MTIME]
204 count, bytes, tstamp = self._get_statistics(node, until)
205 tstamp = max(tstamp, mtime)
209 modified = self._get_statistics(node)[2] # Overall last modification.
210 modified = max(modified, mtime)
213 meta = {'name': account}
216 if props is not None and include_user_defined:
217 meta.update(dict(self.node.attribute_get(props[self.SERIAL], domain)))
218 if until is not None:
219 meta.update({'until_timestamp': tstamp})
220 meta.update({'name': account, 'count': count, 'bytes': bytes})
221 meta.update({'modified': modified})
225 def update_account_meta(self, user, account, domain, meta, replace=False):
226 """Update the metadata associated with the account for the domain."""
228 logger.debug("update_account_meta: %s %s %s %s", account, domain, meta, replace)
230 raise NotAllowedError
231 path, node = self._lookup_account(account, True)
232 self._put_metadata(user, node, domain, meta, replace)
235 def get_account_groups(self, user, account):
236 """Return a dictionary with the user groups defined for this account."""
238 logger.debug("get_account_groups: %s", account)
240 if account not in self._allowed_accounts(user):
241 raise NotAllowedError
243 self._lookup_account(account, True)
244 return self.permissions.group_dict(account)
247 def update_account_groups(self, user, account, groups, replace=False):
248 """Update the groups associated with the account."""
250 logger.debug("update_account_groups: %s %s %s", account, groups, replace)
252 raise NotAllowedError
253 self._lookup_account(account, True)
254 self._check_groups(groups)
256 self.permissions.group_destroy(account)
257 for k, v in groups.iteritems():
258 if not replace: # If not already deleted.
259 self.permissions.group_delete(account, k)
261 self.permissions.group_addmany(account, k, v)
264 def get_account_policy(self, user, account):
265 """Return a dictionary with the account policy."""
267 logger.debug("get_account_policy: %s", account)
269 if account not in self._allowed_accounts(user):
270 raise NotAllowedError
272 path, node = self._lookup_account(account, True)
273 return self._get_policy(node)
276 def update_account_policy(self, user, account, policy, replace=False):
277 """Update the policy associated with the account."""
279 logger.debug("update_account_policy: %s %s %s", account, policy, replace)
281 raise NotAllowedError
282 path, node = self._lookup_account(account, True)
283 self._check_policy(policy)
284 self._put_policy(node, policy, replace)
287 def put_account(self, user, account, policy={}):
288 """Create a new account with the given name."""
290 logger.debug("put_account: %s %s", account, policy)
292 raise NotAllowedError
293 node = self.node.node_lookup(account)
295 raise NameError('Account already exists')
297 self._check_policy(policy)
298 node = self._put_path(user, self.ROOTNODE, account)
299 self._put_policy(node, policy, True)
302 def delete_account(self, user, account):
303 """Delete the account with the given name."""
305 logger.debug("delete_account: %s", account)
307 raise NotAllowedError
308 node = self.node.node_lookup(account)
311 if not self.node.node_remove(node):
312 raise IndexError('Account is not empty')
313 self.permissions.group_destroy(account)
316 def list_containers(self, user, account, marker=None, limit=10000, shared=False, until=None):
317 """Return a list of containers existing under an account."""
319 logger.debug("list_containers: %s %s %s %s %s", account, marker, limit, shared, until)
321 if until or account not in self._allowed_accounts(user):
322 raise NotAllowedError
323 allowed = self._allowed_containers(user, account)
324 start, limit = self._list_limits(allowed, marker, limit)
325 return allowed[start:start + limit]
327 allowed = [x.split('/', 2)[1] for x in self.permissions.access_list_shared(account)]
328 allowed = list(set(allowed))
329 start, limit = self._list_limits(allowed, marker, limit)
330 return allowed[start:start + limit]
331 node = self.node.node_lookup(account)
332 return [x[0] for x in self._list_object_properties(node, account, '', '/', marker, limit, False, None, [], until)]
335 def list_container_meta(self, user, account, container, domain, until=None):
336 """Return a list with all the container's object meta keys for the domain."""
338 logger.debug("list_container_meta: %s %s %s %s", account, container, domain, until)
342 raise NotAllowedError
343 allowed = self.permissions.access_list_paths(user, '/'.join((account, container)))
345 raise NotAllowedError
346 path, node = self._lookup_container(account, container)
347 before = until if until is not None else inf
348 allowed = self._get_formatted_paths(allowed)
349 return self.node.latest_attribute_keys(node, domain, before, CLUSTER_DELETED, allowed)
352 def get_container_meta(self, user, account, container, domain, until=None, include_user_defined=True):
353 """Return a dictionary with the container metadata for the domain."""
355 logger.debug("get_container_meta: %s %s %s %s", account, container, domain, until)
357 if until or container not in self._allowed_containers(user, account):
358 raise NotAllowedError
359 path, node = self._lookup_container(account, container)
360 props = self._get_properties(node, until)
361 mtime = props[self.MTIME]
362 count, bytes, tstamp = self._get_statistics(node, until)
363 tstamp = max(tstamp, mtime)
367 modified = self._get_statistics(node)[2] # Overall last modification.
368 modified = max(modified, mtime)
371 meta = {'name': container}
374 if include_user_defined:
375 meta.update(dict(self.node.attribute_get(props[self.SERIAL], domain)))
376 if until is not None:
377 meta.update({'until_timestamp': tstamp})
378 meta.update({'name': container, 'count': count, 'bytes': bytes})
379 meta.update({'modified': modified})
383 def update_container_meta(self, user, account, container, domain, meta, replace=False):
384 """Update the metadata associated with the container for the domain."""
386 logger.debug("update_container_meta: %s %s %s %s %s", account, container, domain, meta, replace)
388 raise NotAllowedError
389 path, node = self._lookup_container(account, container)
390 src_version_id, dest_version_id = self._put_metadata(user, node, domain, meta, replace)
391 if src_version_id is not None:
392 versioning = self._get_policy(node)['versioning']
393 if versioning != 'auto':
394 self.node.version_remove(src_version_id)
397 def get_container_policy(self, user, account, container):
398 """Return a dictionary with the container policy."""
400 logger.debug("get_container_policy: %s %s", account, container)
402 if container not in self._allowed_containers(user, account):
403 raise NotAllowedError
405 path, node = self._lookup_container(account, container)
406 return self._get_policy(node)
409 def update_container_policy(self, user, account, container, policy, replace=False):
410 """Update the policy associated with the container."""
412 logger.debug("update_container_policy: %s %s %s %s", account, container, policy, replace)
414 raise NotAllowedError
415 path, node = self._lookup_container(account, container)
416 self._check_policy(policy)
417 self._put_policy(node, policy, replace)
420 def put_container(self, user, account, container, policy={}):
421 """Create a new container with the given name."""
423 logger.debug("put_container: %s %s %s", account, container, policy)
425 raise NotAllowedError
427 path, node = self._lookup_container(account, container)
431 raise NameError('Container already exists')
433 self._check_policy(policy)
434 path = '/'.join((account, container))
435 node = self._put_path(user, self._lookup_account(account, True)[1], path)
436 self._put_policy(node, policy, True)
439 def delete_container(self, user, account, container, until=None):
440 """Delete/purge the container with the given name."""
442 logger.debug("delete_container: %s %s %s", account, container, until)
444 raise NotAllowedError
445 path, node = self._lookup_container(account, container)
447 if until is not None:
448 hashes, size = self.node.node_purge_children(node, until, CLUSTER_HISTORY)
450 self.store.map_delete(h)
451 self.node.node_purge_children(node, until, CLUSTER_DELETED)
452 self._report_size_change(user, account, -size, {'action': 'container purge'})
455 if self._get_statistics(node)[0] > 0:
456 raise IndexError('Container is not empty')
457 hashes, size = self.node.node_purge_children(node, inf, CLUSTER_HISTORY)
459 self.store.map_delete(h)
460 self.node.node_purge_children(node, inf, CLUSTER_DELETED)
461 self.node.node_remove(node)
462 self._report_size_change(user, account, -size, {'action': 'container delete'})
464 def _list_objects(self, user, account, container, prefix, delimiter, marker, limit, virtual, domain, keys, shared, until, size_range, all_props):
465 if user != account and until:
466 raise NotAllowedError
467 allowed = self._list_object_permissions(user, account, container, prefix, shared)
468 if shared and not allowed:
470 path, node = self._lookup_container(account, container)
471 allowed = self._get_formatted_paths(allowed)
472 return self._list_object_properties(node, path, prefix, delimiter, marker, limit, virtual, domain, keys, until, size_range, allowed, all_props)
474 def _list_object_permissions(self, user, account, container, prefix, shared):
476 path = '/'.join((account, container, prefix)).rstrip('/')
478 allowed = self.permissions.access_list_paths(user, path)
480 raise NotAllowedError
483 allowed = self.permissions.access_list_shared(path)
489 def list_objects(self, user, account, container, prefix='', delimiter=None, marker=None, limit=10000, virtual=True, domain=None, keys=[], shared=False, until=None, size_range=None):
490 """Return a list of object (name, version_id) tuples existing under a container."""
492 logger.debug("list_objects: %s %s %s %s %s %s %s %s %s %s %s %s", account, container, prefix, delimiter, marker, limit, virtual, domain, keys, shared, until, size_range)
493 return self._list_objects(user, account, container, prefix, delimiter, marker, limit, virtual, domain, keys, shared, until, size_range, False)
496 def list_object_meta(self, user, account, container, prefix='', delimiter=None, marker=None, limit=10000, virtual=True, domain=None, keys=[], shared=False, until=None, size_range=None):
497 """Return a list of object metadata dicts existing under a container."""
499 logger.debug("list_object_meta: %s %s %s %s %s %s %s %s %s %s %s %s", account, container, prefix, delimiter, marker, limit, virtual, domain, keys, shared, until, size_range)
500 props = self._list_objects(user, account, container, prefix, delimiter, marker, limit, virtual, domain, keys, shared, until, size_range, True)
504 objects.append({'subdir': p[0]})
506 objects.append({'name': p[0],
507 'bytes': p[self.SIZE + 1],
508 'type': p[self.TYPE + 1],
509 'hash': p[self.HASH + 1],
510 'version': p[self.SERIAL + 1],
511 'version_timestamp': p[self.MTIME + 1],
512 'modified': p[self.MTIME + 1] if until is None else None,
513 'modified_by': p[self.MUSER + 1],
514 'uuid': p[self.UUID + 1],
515 'checksum': p[self.CHECKSUM + 1]})
519 def list_object_permissions(self, user, account, container, prefix=''):
520 """Return a list of paths that enforce permissions under a container."""
522 logger.debug("list_object_permissions: %s %s %s", account, container, prefix)
523 return self._list_object_permissions(user, account, container, prefix, True)
526 def list_object_public(self, user, account, container, prefix=''):
527 """Return a dict mapping paths to public ids for objects that are public under a container."""
529 logger.debug("list_object_public: %s %s %s", account, container, prefix)
531 for path, p in self.permissions.public_list('/'.join((account, container, prefix))):
532 public[path] = p + ULTIMATE_ANSWER
536 def get_object_meta(self, user, account, container, name, domain, version=None, include_user_defined=True):
537 """Return a dictionary with the object metadata for the domain."""
539 logger.debug("get_object_meta: %s %s %s %s %s", account, container, name, domain, version)
540 self._can_read(user, account, container, name)
541 path, node = self._lookup_object(account, container, name)
542 props = self._get_version(node, version)
544 modified = props[self.MTIME]
547 modified = self._get_version(node)[self.MTIME] # Overall last modification.
548 except NameError: # Object may be deleted.
549 del_props = self.node.version_lookup(node, inf, CLUSTER_DELETED)
550 if del_props is None:
551 raise NameError('Object does not exist')
552 modified = del_props[self.MTIME]
555 if include_user_defined:
556 meta.update(dict(self.node.attribute_get(props[self.SERIAL], domain)))
557 meta.update({'name': name,
558 'bytes': props[self.SIZE],
559 'type': props[self.TYPE],
560 'hash': props[self.HASH],
561 'version': props[self.SERIAL],
562 'version_timestamp': props[self.MTIME],
563 'modified': modified,
564 'modified_by': props[self.MUSER],
565 'uuid': props[self.UUID],
566 'checksum': props[self.CHECKSUM]})
570 def update_object_meta(self, user, account, container, name, domain, meta, replace=False):
571 """Update the metadata associated with the object for the domain and return the new version."""
573 logger.debug("update_object_meta: %s %s %s %s %s %s", account, container, name, domain, meta, replace)
574 self._can_write(user, account, container, name)
575 path, node = self._lookup_object(account, container, name)
576 src_version_id, dest_version_id = self._put_metadata(user, node, domain, meta, replace)
577 self._apply_versioning(account, container, src_version_id)
578 return dest_version_id
581 def get_object_permissions(self, user, account, container, name):
582 """Return the action allowed on the object, the path
583 from which the object gets its permissions from,
584 along with a dictionary containing the permissions."""
586 logger.debug("get_object_permissions: %s %s %s", account, container, name)
588 permissions_path = self._get_permissions_path(account, container, name)
590 if self.permissions.access_check(permissions_path, self.WRITE, user):
592 elif self.permissions.access_check(permissions_path, self.READ, user):
595 raise NotAllowedError
596 self._lookup_object(account, container, name)
597 return (allowed, permissions_path, self.permissions.access_get(permissions_path))
600 def update_object_permissions(self, user, account, container, name, permissions):
601 """Update the permissions associated with the object."""
603 logger.debug("update_object_permissions: %s %s %s %s", account, container, name, permissions)
605 raise NotAllowedError
606 path = self._lookup_object(account, container, name)[0]
607 self._check_permissions(path, permissions)
608 self.permissions.access_set(path, permissions)
609 self._report_sharing_change(user, account, path, {'members':self.permissions.access_members(path)})
612 def get_object_public(self, user, account, container, name):
613 """Return the public id of the object if applicable."""
615 logger.debug("get_object_public: %s %s %s", account, container, name)
616 self._can_read(user, account, container, name)
617 path = self._lookup_object(account, container, name)[0]
618 p = self.permissions.public_get(path)
624 def update_object_public(self, user, account, container, name, public):
625 """Update the public status of the object."""
627 logger.debug("update_object_public: %s %s %s %s", account, container, name, public)
628 self._can_write(user, account, container, name)
629 path = self._lookup_object(account, container, name)[0]
631 self.permissions.public_unset(path)
633 self.permissions.public_set(path)
636 def get_object_hashmap(self, user, account, container, name, version=None):
637 """Return the object's size and a list with partial hashes."""
639 logger.debug("get_object_hashmap: %s %s %s %s", account, container, name, version)
640 self._can_read(user, account, container, name)
641 path, node = self._lookup_object(account, container, name)
642 props = self._get_version(node, version)
643 hashmap = self.store.map_get(binascii.unhexlify(props[self.HASH]))
644 return props[self.SIZE], [binascii.hexlify(x) for x in hashmap]
646 def _update_object_hash(self, user, account, container, name, size, type, hash, checksum, domain, meta, replace_meta, permissions, src_node=None, src_version_id=None, is_copy=False):
647 if permissions is not None and user != account:
648 raise NotAllowedError
649 self._can_write(user, account, container, name)
650 if permissions is not None:
651 path = '/'.join((account, container, name))
652 self._check_permissions(path, permissions)
654 account_path, account_node = self._lookup_account(account, True)
655 container_path, container_node = self._lookup_container(account, container)
656 path, node = self._put_object_node(container_path, container_node, name)
657 pre_version_id, dest_version_id = self._put_version_duplicate(user, node, src_node=src_node, size=size, type=type, hash=hash, checksum=checksum, is_copy=is_copy)
660 if src_version_id is None:
661 src_version_id = pre_version_id
662 self._put_metadata_duplicate(src_version_id, dest_version_id, domain, meta, replace_meta)
665 del_size = self._apply_versioning(account, container, pre_version_id)
666 size_delta = size - del_size
668 account_quota = long(self._get_policy(account_node)['quota'])
669 container_quota = long(self._get_policy(container_node)['quota'])
670 if (account_quota > 0 and self._get_statistics(account_node)[1] + size_delta > account_quota) or \
671 (container_quota > 0 and self._get_statistics(container_node)[1] + size_delta > container_quota):
672 # This must be executed in a transaction, so the version is never created if it fails.
674 self._report_size_change(user, account, size_delta, {'action': 'object update'})
676 if permissions is not None:
677 self.permissions.access_set(path, permissions)
678 self._report_sharing_change(user, account, path, {'members':self.permissions.access_members(path)})
680 self._report_object_change(user, account, path, details={'version': dest_version_id, 'action': 'object update'})
681 return dest_version_id
684 def update_object_hashmap(self, user, account, container, name, size, type, hashmap, checksum, domain, meta={}, replace_meta=False, permissions=None):
685 """Create/update an object with the specified size and partial hashes."""
687 logger.debug("update_object_hashmap: %s %s %s %s %s %s %s", account, container, name, size, type, hashmap, checksum)
688 if size == 0: # No such thing as an empty hashmap.
689 hashmap = [self.put_block('')]
690 map = HashMap(self.block_size, self.hash_algorithm)
691 map.extend([binascii.unhexlify(x) for x in hashmap])
692 missing = self.store.block_search(map)
695 ie.data = [binascii.hexlify(x) for x in missing]
699 dest_version_id = self._update_object_hash(user, account, container, name, size, type, binascii.hexlify(hash), checksum, domain, meta, replace_meta, permissions)
700 self.store.map_put(hash, map)
701 return dest_version_id
704 def update_object_checksum(self, user, account, container, name, version, checksum):
705 """Update an object's checksum."""
707 logger.debug("update_object_checksum: %s %s %s %s %s", account, container, name, version, checksum)
708 # Update objects with greater version and same hashmap and size (fix metadata updates).
709 self._can_write(user, account, container, name)
710 path, node = self._lookup_object(account, container, name)
711 props = self._get_version(node, version)
712 versions = self.node.node_get_versions(node)
714 if x[self.SERIAL] >= int(version) and x[self.HASH] == props[self.HASH] and x[self.SIZE] == props[self.SIZE]:
715 self.node.version_put_property(x[self.SERIAL], 'checksum', checksum)
717 def _copy_object(self, user, src_account, src_container, src_name, dest_account, dest_container, dest_name, type, dest_domain=None, dest_meta={}, replace_meta=False, permissions=None, src_version=None, is_move=False):
718 self._can_read(user, src_account, src_container, src_name)
719 path, node = self._lookup_object(src_account, src_container, src_name)
720 # TODO: Will do another fetch of the properties in duplicate version...
721 props = self._get_version(node, src_version) # Check to see if source exists.
722 src_version_id = props[self.SERIAL]
723 hash = props[self.HASH]
724 size = props[self.SIZE]
726 is_copy = not is_move and (src_account, src_container, src_name) != (dest_account, dest_container, dest_name) # New uuid.
727 dest_version_id = self._update_object_hash(user, dest_account, dest_container, dest_name, size, type, hash, None, dest_domain, dest_meta, replace_meta, permissions, src_node=node, src_version_id=src_version_id, is_copy=is_copy)
728 return dest_version_id
731 def copy_object(self, user, src_account, src_container, src_name, dest_account, dest_container, dest_name, type, domain, meta={}, replace_meta=False, permissions=None, src_version=None):
732 """Copy an object's data and metadata."""
734 logger.debug("copy_object: %s %s %s %s %s %s %s %s %s %s %s %s", src_account, src_container, src_name, dest_account, dest_container, dest_name, type, domain, meta, replace_meta, permissions, src_version)
735 dest_version_id = self._copy_object(user, src_account, src_container, src_name, dest_account, dest_container, dest_name, type, domain, meta, replace_meta, permissions, src_version, False)
736 return dest_version_id
739 def move_object(self, user, src_account, src_container, src_name, dest_account, dest_container, dest_name, type, domain, meta={}, replace_meta=False, permissions=None):
740 """Move an object's data and metadata."""
742 logger.debug("move_object: %s %s %s %s %s %s %s %s %s %s %s", src_account, src_container, src_name, dest_account, dest_container, dest_name, type, domain, meta, replace_meta, permissions)
743 if user != src_account:
744 raise NotAllowedError
745 dest_version_id = self._copy_object(user, src_account, src_container, src_name, dest_account, dest_container, dest_name, type, domain, meta, replace_meta, permissions, None, True)
746 if (src_account, src_container, src_name) != (dest_account, dest_container, dest_name):
747 self._delete_object(user, src_account, src_container, src_name)
748 return dest_version_id
750 def _delete_object(self, user, account, container, name, until=None):
752 raise NotAllowedError
754 if until is not None:
755 path = '/'.join((account, container, name))
756 node = self.node.node_lookup(path)
761 h, s = self.node.node_purge(node, until, CLUSTER_NORMAL)
764 h, s = self.node.node_purge(node, until, CLUSTER_HISTORY)
768 self.store.map_delete(h)
769 self.node.node_purge(node, until, CLUSTER_DELETED)
771 props = self._get_version(node)
773 self.permissions.access_clear(path)
774 self._report_size_change(user, account, -size, {'action': 'object purge'})
777 path, node = self._lookup_object(account, container, name)
778 src_version_id, dest_version_id = self._put_version_duplicate(user, node, size=0, type='', hash=None, checksum='', cluster=CLUSTER_DELETED)
779 del_size = self._apply_versioning(account, container, src_version_id)
781 self._report_size_change(user, account, -del_size, {'action': 'object delete'})
782 self._report_object_change(user, account, path, details={'action': 'object delete'})
783 self.permissions.access_clear(path)
786 def delete_object(self, user, account, container, name, until=None):
787 """Delete/purge an object."""
789 logger.debug("delete_object: %s %s %s %s", account, container, name, until)
790 self._delete_object(user, account, container, name, until)
793 def list_versions(self, user, account, container, name):
794 """Return a list of all (version, version_timestamp) tuples for an object."""
796 logger.debug("list_versions: %s %s %s", account, container, name)
797 self._can_read(user, account, container, name)
798 path, node = self._lookup_object(account, container, name)
799 versions = self.node.node_get_versions(node)
800 return [[x[self.SERIAL], x[self.MTIME]] for x in versions if x[self.CLUSTER] != CLUSTER_DELETED]
803 def get_uuid(self, user, uuid):
804 """Return the (account, container, name) for the UUID given."""
806 logger.debug("get_uuid: %s", uuid)
807 info = self.node.latest_uuid(uuid)
811 account, container, name = path.split('/', 2)
812 self._can_read(user, account, container, name)
813 return (account, container, name)
816 def get_public(self, user, public):
817 """Return the (account, container, name) for the public id given."""
819 logger.debug("get_public: %s", public)
820 if public is None or public < ULTIMATE_ANSWER:
822 path = self.permissions.public_path(public - ULTIMATE_ANSWER)
825 account, container, name = path.split('/', 2)
826 self._can_read(user, account, container, name)
827 return (account, container, name)
829 @backend_method(autocommit=0)
830 def get_block(self, hash):
831 """Return a block's data."""
833 logger.debug("get_block: %s", hash)
834 block = self.store.block_get(binascii.unhexlify(hash))
836 raise NameError('Block does not exist')
839 @backend_method(autocommit=0)
840 def put_block(self, data):
841 """Store a block and return the hash."""
843 logger.debug("put_block: %s", len(data))
844 return binascii.hexlify(self.store.block_put(data))
846 @backend_method(autocommit=0)
847 def update_block(self, hash, data, offset=0):
848 """Update a known block and return the hash."""
850 logger.debug("update_block: %s %s %s", hash, len(data), offset)
851 if offset == 0 and len(data) == self.block_size:
852 return self.put_block(data)
853 h = self.store.block_update(binascii.unhexlify(hash), offset, data)
854 return binascii.hexlify(h)
858 def _generate_uuid(self):
859 return str(uuidlib.uuid4())
861 def _put_object_node(self, path, parent, name):
862 path = '/'.join((path, name))
863 node = self.node.node_lookup(path)
865 node = self.node.node_create(parent, path)
868 def _put_path(self, user, parent, path):
869 node = self.node.node_create(parent, path)
870 self.node.version_create(node, None, 0, '', None, user, self._generate_uuid(), '', CLUSTER_NORMAL)
873 def _lookup_account(self, account, create=True):
874 node = self.node.node_lookup(account)
875 if node is None and create:
876 node = self._put_path(account, self.ROOTNODE, account) # User is account.
879 def _lookup_container(self, account, container):
880 path = '/'.join((account, container))
881 node = self.node.node_lookup(path)
883 raise NameError('Container does not exist')
886 def _lookup_object(self, account, container, name):
887 path = '/'.join((account, container, name))
888 node = self.node.node_lookup(path)
890 raise NameError('Object does not exist')
893 def _get_properties(self, node, until=None):
894 """Return properties until the timestamp given."""
896 before = until if until is not None else inf
897 props = self.node.version_lookup(node, before, CLUSTER_NORMAL)
898 if props is None and until is not None:
899 props = self.node.version_lookup(node, before, CLUSTER_HISTORY)
901 raise NameError('Path does not exist')
904 def _get_statistics(self, node, until=None):
905 """Return count, sum of size and latest timestamp of everything under node."""
908 stats = self.node.statistics_get(node, CLUSTER_NORMAL)
910 stats = self.node.statistics_latest(node, until, CLUSTER_DELETED)
915 def _get_version(self, node, version=None):
917 props = self.node.version_lookup(node, inf, CLUSTER_NORMAL)
919 raise NameError('Object does not exist')
922 version = int(version)
924 raise IndexError('Version does not exist')
925 props = self.node.version_get_properties(version)
926 if props is None or props[self.CLUSTER] == CLUSTER_DELETED:
927 raise IndexError('Version does not exist')
930 def _put_version_duplicate(self, user, node, src_node=None, size=None, type=None, hash=None, checksum=None, cluster=CLUSTER_NORMAL, is_copy=False):
931 """Create a new version of the node."""
933 props = self.node.version_lookup(node if src_node is None else src_node, inf, CLUSTER_NORMAL)
934 if props is not None:
935 src_version_id = props[self.SERIAL]
936 src_hash = props[self.HASH]
937 src_size = props[self.SIZE]
938 src_type = props[self.TYPE]
939 src_checksum = props[self.CHECKSUM]
941 src_version_id = None
946 if size is None: # Set metadata.
947 hash = src_hash # This way hash can be set to None (account or container).
952 checksum = src_checksum
953 uuid = self._generate_uuid() if (is_copy or src_version_id is None) else props[self.UUID]
956 pre_version_id = src_version_id
958 pre_version_id = None
959 props = self.node.version_lookup(node, inf, CLUSTER_NORMAL)
960 if props is not None:
961 pre_version_id = props[self.SERIAL]
962 if pre_version_id is not None:
963 self.node.version_recluster(pre_version_id, CLUSTER_HISTORY)
965 dest_version_id, mtime = self.node.version_create(node, hash, size, type, src_version_id, user, uuid, checksum, cluster)
966 return pre_version_id, dest_version_id
968 def _put_metadata_duplicate(self, src_version_id, dest_version_id, domain, meta, replace=False):
969 if src_version_id is not None:
970 self.node.attribute_copy(src_version_id, dest_version_id)
972 self.node.attribute_del(dest_version_id, domain, (k for k, v in meta.iteritems() if v == ''))
973 self.node.attribute_set(dest_version_id, domain, ((k, v) for k, v in meta.iteritems() if v != ''))
975 self.node.attribute_del(dest_version_id, domain)
976 self.node.attribute_set(dest_version_id, domain, ((k, v) for k, v in meta.iteritems()))
978 def _put_metadata(self, user, node, domain, meta, replace=False):
979 """Create a new version and store metadata."""
981 src_version_id, dest_version_id = self._put_version_duplicate(user, node)
982 self._put_metadata_duplicate(src_version_id, dest_version_id, domain, meta, replace)
983 return src_version_id, dest_version_id
985 def _list_limits(self, listing, marker, limit):
989 start = listing.index(marker) + 1
992 if not limit or limit > 10000:
996 def _list_object_properties(self, parent, path, prefix='', delimiter=None, marker=None, limit=10000, virtual=True, domain=None, keys=[], until=None, size_range=None, allowed=[], all_props=False):
997 cont_prefix = path + '/'
998 prefix = cont_prefix + prefix
999 start = cont_prefix + marker if marker else None
1000 before = until if until is not None else inf
1001 filterq = keys if domain else []
1004 objects, prefixes = self.node.latest_version_list(parent, prefix, delimiter, start, limit, before, CLUSTER_DELETED, allowed, domain, filterq, sizeq, all_props)
1005 objects.extend([(p, None) for p in prefixes] if virtual else [])
1006 objects.sort(key=lambda x: x[0])
1007 objects = [(x[0][len(cont_prefix):],) + x[1:] for x in objects]
1009 start, limit = self._list_limits([x[0] for x in objects], marker, limit)
1010 return objects[start:start + limit]
1012 # Reporting functions.
1014 def _report_size_change(self, user, account, size, details={}):
1015 logger.debug("_report_size_change: %s %s %s %s", user, account, size, details)
1016 account_node = self._lookup_account(account, True)[1]
1017 total = self._get_statistics(account_node)[1]
1018 details.update({'user': user, 'total': total})
1019 self.messages.append((QUEUE_MESSAGE_KEY_PREFIX % ('resource.diskspace',), account, QUEUE_INSTANCE_ID, 'diskspace', float(size), details))
1021 def _report_object_change(self, user, account, path, details={}):
1022 logger.debug("_report_object_change: %s %s %s %s", user, account, path, details)
1023 details.update({'user': user})
1024 self.messages.append((QUEUE_MESSAGE_KEY_PREFIX % ('object',), account, QUEUE_INSTANCE_ID, 'object', path, details))
1026 def _report_sharing_change(self, user, account, path, details={}):
1027 logger.debug("_report_permissions_change: %s %s %s %s", user, account, path, details)
1028 details.update({'user': user})
1029 self.messages.append((QUEUE_MESSAGE_KEY_PREFIX % ('sharing',), account, QUEUE_INSTANCE_ID, 'sharing', path, details))
1033 def _check_policy(self, policy):
1034 for k in policy.keys():
1036 policy[k] = self.default_policy.get(k)
1037 for k, v in policy.iteritems():
1039 q = int(v) # May raise ValueError.
1042 elif k == 'versioning':
1043 if v not in ['auto', 'none']:
1048 def _put_policy(self, node, policy, replace):
1050 for k, v in self.default_policy.iteritems():
1053 self.node.policy_set(node, policy)
1055 def _get_policy(self, node):
1056 policy = self.default_policy.copy()
1057 policy.update(self.node.policy_get(node))
1060 def _apply_versioning(self, account, container, version_id):
1061 """Delete the provided version if such is the policy.
1062 Return size of object removed.
1065 if version_id is None:
1067 path, node = self._lookup_container(account, container)
1068 versioning = self._get_policy(node)['versioning']
1069 if versioning != 'auto':
1070 hash, size = self.node.version_remove(version_id)
1071 self.store.map_delete(hash)
1075 # Access control functions.
1077 def _check_groups(self, groups):
1078 # raise ValueError('Bad characters in groups')
1081 def _check_permissions(self, path, permissions):
1082 # raise ValueError('Bad characters in permissions')
1085 def _get_formatted_paths(self, paths):
1088 node = self.node.node_lookup(p)
1089 if node is not None:
1090 props = self.node.version_lookup(node, inf, CLUSTER_NORMAL)
1091 if props is not None:
1092 if props[self.TYPE].split(';', 1)[0].strip() in ('application/directory', 'application/folder'):
1093 formatted.append((p.rstrip('/') + '/', self.MATCH_PREFIX))
1094 formatted.append((p, self.MATCH_EXACT))
1097 def _get_permissions_path(self, account, container, name):
1098 path = '/'.join((account, container, name))
1099 permission_paths = self.permissions.access_inherit(path)
1100 permission_paths.sort()
1101 permission_paths.reverse()
1102 for p in permission_paths:
1106 if p.count('/') < 2:
1108 node = self.node.node_lookup(p)
1109 if node is not None:
1110 props = self.node.version_lookup(node, inf, CLUSTER_NORMAL)
1111 if props is not None:
1112 if props[self.TYPE].split(';', 1)[0].strip() in ('application/directory', 'application/folder'):
1116 def _can_read(self, user, account, container, name):
1119 path = '/'.join((account, container, name))
1120 if self.permissions.public_get(path) is not None:
1122 path = self._get_permissions_path(account, container, name)
1124 raise NotAllowedError
1125 if not self.permissions.access_check(path, self.READ, user) and not self.permissions.access_check(path, self.WRITE, user):
1126 raise NotAllowedError
1128 def _can_write(self, user, account, container, name):
1131 path = '/'.join((account, container, name))
1132 path = self._get_permissions_path(account, container, name)
1134 raise NotAllowedError
1135 if not self.permissions.access_check(path, self.WRITE, user):
1136 raise NotAllowedError
1138 def _allowed_accounts(self, user):
1140 for path in self.permissions.access_list_paths(user):
1141 allow.add(path.split('/', 1)[0])
1142 return sorted(allow)
1144 def _allowed_containers(self, user, account):
1146 for path in self.permissions.access_list_paths(user, account):
1147 allow.add(path.split('/', 2)[1])
1148 return sorted(allow)