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
11 # 2. Redistributions in binary form must reproduce the above
12 # copyright notice, this list of conditions and the following
13 # disclaimer in the documentation and/or other materials
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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 %s", user, 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 %s", user, 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 %s", user, 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 %s", user, 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 %s", user, 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 %s", user, 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 %s", user, 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 %s", user, 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, public=False):
317 """Return a list of containers existing under an account."""
319 logger.debug("list_containers: %s %s %s %s %s %s %s", user, account, marker, limit, shared, until, public)
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]
329 allowed.update([x.split('/', 2)[1] for x in self.permissions.access_list_shared(account)])
331 allowed.update([x[0].split('/', 2)[1] for x in self.permissions.public_list(account)])
332 allowed = sorted(allowed)
333 start, limit = self._list_limits(allowed, marker, limit)
334 return allowed[start:start + limit]
335 node = self.node.node_lookup(account)
336 containers = [x[0] for x in self._list_object_properties(node, account, '', '/', marker, limit, False, None, [], until)]
337 start, limit = self._list_limits([x[0] for x in containers], marker, limit)
338 return containers[start:start + limit]
341 def list_container_meta(self, user, account, container, domain, until=None):
342 """Return a list with all the container's object meta keys for the domain."""
344 logger.debug("list_container_meta: %s %s %s %s %s", user, account, container, domain, until)
348 raise NotAllowedError
349 allowed = self.permissions.access_list_paths(user, '/'.join((account, container)))
351 raise NotAllowedError
352 path, node = self._lookup_container(account, container)
353 before = until if until is not None else inf
354 allowed = self._get_formatted_paths(allowed)
355 return self.node.latest_attribute_keys(node, domain, before, CLUSTER_DELETED, allowed)
358 def get_container_meta(self, user, account, container, domain, until=None, include_user_defined=True):
359 """Return a dictionary with the container metadata for the domain."""
361 logger.debug("get_container_meta: %s %s %s %s %s", user, account, container, domain, until)
363 if until or container not in self._allowed_containers(user, account):
364 raise NotAllowedError
365 path, node = self._lookup_container(account, container)
366 props = self._get_properties(node, until)
367 mtime = props[self.MTIME]
368 count, bytes, tstamp = self._get_statistics(node, until)
369 tstamp = max(tstamp, mtime)
373 modified = self._get_statistics(node)[2] # Overall last modification.
374 modified = max(modified, mtime)
377 meta = {'name': container}
380 if include_user_defined:
381 meta.update(dict(self.node.attribute_get(props[self.SERIAL], domain)))
382 if until is not None:
383 meta.update({'until_timestamp': tstamp})
384 meta.update({'name': container, 'count': count, 'bytes': bytes})
385 meta.update({'modified': modified})
389 def update_container_meta(self, user, account, container, domain, meta, replace=False):
390 """Update the metadata associated with the container for the domain."""
392 logger.debug("update_container_meta: %s %s %s %s %s %s", user, account, container, domain, meta, replace)
394 raise NotAllowedError
395 path, node = self._lookup_container(account, container)
396 src_version_id, dest_version_id = self._put_metadata(user, node, domain, meta, replace)
397 if src_version_id is not None:
398 versioning = self._get_policy(node)['versioning']
399 if versioning != 'auto':
400 self.node.version_remove(src_version_id)
403 def get_container_policy(self, user, account, container):
404 """Return a dictionary with the container policy."""
406 logger.debug("get_container_policy: %s %s %s", user, account, container)
408 if container not in self._allowed_containers(user, account):
409 raise NotAllowedError
411 path, node = self._lookup_container(account, container)
412 return self._get_policy(node)
415 def update_container_policy(self, user, account, container, policy, replace=False):
416 """Update the policy associated with the container."""
418 logger.debug("update_container_policy: %s %s %s %s %s", user, account, container, policy, replace)
420 raise NotAllowedError
421 path, node = self._lookup_container(account, container)
422 self._check_policy(policy)
423 self._put_policy(node, policy, replace)
426 def put_container(self, user, account, container, policy={}):
427 """Create a new container with the given name."""
429 logger.debug("put_container: %s %s %s %s", user, account, container, policy)
431 raise NotAllowedError
433 path, node = self._lookup_container(account, container)
437 raise NameError('Container already exists')
439 self._check_policy(policy)
440 path = '/'.join((account, container))
441 node = self._put_path(user, self._lookup_account(account, True)[1], path)
442 self._put_policy(node, policy, True)
445 def delete_container(self, user, account, container, until=None, prefix='', delimiter=None):
446 """Delete/purge the container with the given name."""
448 logger.debug("delete_container: %s %s %s %s %s %s", user, account, container, until, prefix, delimiter)
450 raise NotAllowedError
451 path, node = self._lookup_container(account, container)
453 if until is not None:
454 hashes, size = self.node.node_purge_children(node, until, CLUSTER_HISTORY)
456 self.store.map_delete(h)
457 self.node.node_purge_children(node, until, CLUSTER_DELETED)
458 self._report_size_change(user, account, -size, {'action': 'container purge'})
461 if self._get_statistics(node)[0] > 0:
462 raise IndexError('Container is not empty')
463 hashes, size = self.node.node_purge_children(node, inf, CLUSTER_HISTORY)
465 self.store.map_delete(h)
466 self.node.node_purge_children(node, inf, CLUSTER_DELETED)
467 self.node.node_remove(node)
468 self._report_size_change(user, account, -size, {'action': 'container delete'})
470 def _list_objects(self, user, account, container, prefix, delimiter, marker, limit, virtual, domain, keys, shared, until, size_range, all_props, public):
471 if user != account and until:
472 raise NotAllowedError
473 if shared and public:
475 shared = self._list_object_permissions(user, account, container, prefix, shared=True, public=False)
478 path, node = self._lookup_container(account, container)
479 shared = self._get_formatted_paths(shared)
480 objects = self._list_object_properties(node, path, prefix, delimiter, marker, limit, virtual, domain, keys, until, size_range, shared, all_props)
483 objects.extend(self._list_public_object_properties(user, account, container, prefix, all_props))
485 objects.sort(key=lambda x: x[0])
486 start, limit = self._list_limits([x[0] for x in objects], marker, limit)
487 return objects[start:start + limit]
489 objects = self._list_public_object_properties(user, account, container, prefix, all_props)
490 start, limit = self._list_limits([x[0] for x in objects], marker, limit)
491 return objects[start:start + limit]
493 allowed = self._list_object_permissions(user, account, container, prefix, shared, public)
494 if shared and not allowed:
496 path, node = self._lookup_container(account, container)
497 allowed = self._get_formatted_paths(allowed)
498 objects = self._list_object_properties(node, path, prefix, delimiter, marker, limit, virtual, domain, keys, until, size_range, allowed, all_props)
499 start, limit = self._list_limits([x[0] for x in objects], marker, limit)
500 return objects[start:start + limit]
502 def _list_public_object_properties(self, user, account, container, prefix, all_props):
503 public = self._list_object_permissions(user, account, container, prefix, shared=False, public=True)
504 paths, nodes = self._lookup_objects(public)
505 path = '/'.join((account, container))
506 cont_prefix = path + '/'
507 paths = [x[len(cont_prefix):] for x in paths]
508 props = self.node.version_lookup_bulk(nodes, all_props=all_props)
509 objects = [(path,) + props for path, props in zip(paths, props)]
512 def _list_objects_no_limit(self, user, account, container, prefix, delimiter, virtual, domain, keys, shared, until, size_range, all_props, public):
515 marker = objects[-1] if objects else None
517 l = self._list_objects(user, account, container, prefix, delimiter, marker, limit, virtual, domain, keys, shared, until, size_range, all_props, public)
519 if not l or len(l) < limit:
523 def _list_object_permissions(self, user, account, container, prefix, shared, public):
525 path = '/'.join((account, container, prefix)).rstrip('/')
527 allowed = self.permissions.access_list_paths(user, path)
529 raise NotAllowedError
533 allowed.update(self.permissions.access_list_shared(path))
535 allowed.update([x[0] for x in self.permissions.public_list(path)])
536 allowed = sorted(allowed)
542 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, public=False):
543 """Return a list of object (name, version_id) tuples existing under a container."""
545 logger.debug("list_objects: %s %s %s %s %s %s %s %s %s %s %s %s %s %s", user, account, container, prefix, delimiter, marker, limit, virtual, domain, keys, shared, until, size_range, public)
546 return self._list_objects(user, account, container, prefix, delimiter, marker, limit, virtual, domain, keys, shared, until, size_range, False, public)
549 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, public=False):
550 """Return a list of object metadata dicts existing under a container."""
552 logger.debug("list_object_meta: %s %s %s %s %s %s %s %s %s %s %s %s %s %s", user, account, container, prefix, delimiter, marker, limit, virtual, domain, keys, shared, until, size_range, public)
553 props = self._list_objects(user, account, container, prefix, delimiter, marker, limit, virtual, domain, keys, shared, until, size_range, True, public)
557 objects.append({'subdir': p[0]})
559 objects.append({'name': p[0],
560 'bytes': p[self.SIZE + 1],
561 'type': p[self.TYPE + 1],
562 'hash': p[self.HASH + 1],
563 'version': p[self.SERIAL + 1],
564 'version_timestamp': p[self.MTIME + 1],
565 'modified': p[self.MTIME + 1] if until is None else None,
566 'modified_by': p[self.MUSER + 1],
567 'uuid': p[self.UUID + 1],
568 'checksum': p[self.CHECKSUM + 1]})
572 def list_object_permissions(self, user, account, container, prefix=''):
573 """Return a list of paths that enforce permissions under a container."""
575 logger.debug("list_object_permissions: %s %s %s %s", user, account, container, prefix)
576 return self._list_object_permissions(user, account, container, prefix, True, False)
579 def list_object_public(self, user, account, container, prefix=''):
580 """Return a dict mapping paths to public ids for objects that are public under a container."""
582 logger.debug("list_object_public: %s %s %s %s", user, account, container, prefix)
584 for path, p in self.permissions.public_list('/'.join((account, container, prefix))):
585 public[path] = p + ULTIMATE_ANSWER
589 def get_object_meta(self, user, account, container, name, domain, version=None, include_user_defined=True):
590 """Return a dictionary with the object metadata for the domain."""
592 logger.debug("get_object_meta: %s %s %s %s %s %s", user, account, container, name, domain, version)
593 self._can_read(user, account, container, name)
594 path, node = self._lookup_object(account, container, name)
595 props = self._get_version(node, version)
597 modified = props[self.MTIME]
600 modified = self._get_version(node)[self.MTIME] # Overall last modification.
601 except NameError: # Object may be deleted.
602 del_props = self.node.version_lookup(node, inf, CLUSTER_DELETED)
603 if del_props is None:
604 raise NameError('Object does not exist')
605 modified = del_props[self.MTIME]
608 if include_user_defined:
609 meta.update(dict(self.node.attribute_get(props[self.SERIAL], domain)))
610 meta.update({'name': name,
611 'bytes': props[self.SIZE],
612 'type': props[self.TYPE],
613 'hash': props[self.HASH],
614 'version': props[self.SERIAL],
615 'version_timestamp': props[self.MTIME],
616 'modified': modified,
617 'modified_by': props[self.MUSER],
618 'uuid': props[self.UUID],
619 'checksum': props[self.CHECKSUM]})
623 def update_object_meta(self, user, account, container, name, domain, meta, replace=False):
624 """Update the metadata associated with the object for the domain and return the new version."""
626 logger.debug("update_object_meta: %s %s %s %s %s %s %s", user, account, container, name, domain, meta, replace)
627 self._can_write(user, account, container, name)
628 path, node = self._lookup_object(account, container, name)
629 src_version_id, dest_version_id = self._put_metadata(user, node, domain, meta, replace)
630 self._apply_versioning(account, container, src_version_id)
631 return dest_version_id
634 def get_object_permissions(self, user, account, container, name):
635 """Return the action allowed on the object, the path
636 from which the object gets its permissions from,
637 along with a dictionary containing the permissions."""
639 logger.debug("get_object_permissions: %s %s %s %s", user, account, container, name)
641 permissions_path = self._get_permissions_path(account, container, name)
643 if self.permissions.access_check(permissions_path, self.WRITE, user):
645 elif self.permissions.access_check(permissions_path, self.READ, user):
648 raise NotAllowedError
649 self._lookup_object(account, container, name)
650 return (allowed, permissions_path, self.permissions.access_get(permissions_path))
653 def update_object_permissions(self, user, account, container, name, permissions):
654 """Update the permissions associated with the object."""
656 logger.debug("update_object_permissions: %s %s %s %s %s", user, account, container, name, permissions)
658 raise NotAllowedError
659 path = self._lookup_object(account, container, name)[0]
660 self._check_permissions(path, permissions)
661 self.permissions.access_set(path, permissions)
662 self._report_sharing_change(user, account, path, {'members':self.permissions.access_members(path)})
665 def get_object_public(self, user, account, container, name):
666 """Return the public id of the object if applicable."""
668 logger.debug("get_object_public: %s %s %s %s", user, account, container, name)
669 self._can_read(user, account, container, name)
670 path = self._lookup_object(account, container, name)[0]
671 p = self.permissions.public_get(path)
677 def update_object_public(self, user, account, container, name, public):
678 """Update the public status of the object."""
680 logger.debug("update_object_public: %s %s %s %s %s", user, account, container, name, public)
681 self._can_write(user, account, container, name)
682 path = self._lookup_object(account, container, name)[0]
684 self.permissions.public_unset(path)
686 self.permissions.public_set(path)
689 def get_object_hashmap(self, user, account, container, name, version=None):
690 """Return the object's size and a list with partial hashes."""
692 logger.debug("get_object_hashmap: %s %s %s %s %s", user, account, container, name, version)
693 self._can_read(user, account, container, name)
694 path, node = self._lookup_object(account, container, name)
695 props = self._get_version(node, version)
696 hashmap = self.store.map_get(binascii.unhexlify(props[self.HASH]))
697 return props[self.SIZE], [binascii.hexlify(x) for x in hashmap]
699 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):
700 if permissions is not None and user != account:
701 raise NotAllowedError
702 self._can_write(user, account, container, name)
703 if permissions is not None:
704 path = '/'.join((account, container, name))
705 self._check_permissions(path, permissions)
707 account_path, account_node = self._lookup_account(account, True)
708 container_path, container_node = self._lookup_container(account, container)
709 path, node = self._put_object_node(container_path, container_node, name)
710 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)
713 if src_version_id is None:
714 src_version_id = pre_version_id
715 self._put_metadata_duplicate(src_version_id, dest_version_id, domain, meta, replace_meta)
718 del_size = self._apply_versioning(account, container, pre_version_id)
719 size_delta = size - del_size
721 account_quota = long(self._get_policy(account_node)['quota'])
722 container_quota = long(self._get_policy(container_node)['quota'])
723 if (account_quota > 0 and self._get_statistics(account_node)[1] + size_delta > account_quota) or \
724 (container_quota > 0 and self._get_statistics(container_node)[1] + size_delta > container_quota):
725 # This must be executed in a transaction, so the version is never created if it fails.
727 self._report_size_change(user, account, size_delta, {'action': 'object update'})
729 if permissions is not None:
730 self.permissions.access_set(path, permissions)
731 self._report_sharing_change(user, account, path, {'members':self.permissions.access_members(path)})
733 self._report_object_change(user, account, path, details={'version': dest_version_id, 'action': 'object update'})
734 return dest_version_id
737 def update_object_hashmap(self, user, account, container, name, size, type, hashmap, checksum, domain, meta={}, replace_meta=False, permissions=None):
738 """Create/update an object with the specified size and partial hashes."""
740 logger.debug("update_object_hashmap: %s %s %s %s %s %s %s %s", user, account, container, name, size, type, hashmap, checksum)
741 if size == 0: # No such thing as an empty hashmap.
742 hashmap = [self.put_block('')]
743 map = HashMap(self.block_size, self.hash_algorithm)
744 map.extend([binascii.unhexlify(x) for x in hashmap])
745 missing = self.store.block_search(map)
748 ie.data = [binascii.hexlify(x) for x in missing]
752 dest_version_id = self._update_object_hash(user, account, container, name, size, type, binascii.hexlify(hash), checksum, domain, meta, replace_meta, permissions)
753 self.store.map_put(hash, map)
754 return dest_version_id
757 def update_object_checksum(self, user, account, container, name, version, checksum):
758 """Update an object's checksum."""
760 logger.debug("update_object_checksum: %s %s %s %s %s %s", user, account, container, name, version, checksum)
761 # Update objects with greater version and same hashmap and size (fix metadata updates).
762 self._can_write(user, account, container, name)
763 path, node = self._lookup_object(account, container, name)
764 props = self._get_version(node, version)
765 versions = self.node.node_get_versions(node)
767 if x[self.SERIAL] >= int(version) and x[self.HASH] == props[self.HASH] and x[self.SIZE] == props[self.SIZE]:
768 self.node.version_put_property(x[self.SERIAL], 'checksum', checksum)
770 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, delimiter=None):
771 dest_version_ids = []
772 self._can_read(user, src_account, src_container, src_name)
773 path, node = self._lookup_object(src_account, src_container, src_name)
774 # TODO: Will do another fetch of the properties in duplicate version...
775 props = self._get_version(node, src_version) # Check to see if source exists.
776 src_version_id = props[self.SERIAL]
777 hash = props[self.HASH]
778 size = props[self.SIZE]
779 is_copy = not is_move and (src_account, src_container, src_name) != (dest_account, dest_container, dest_name) # New uuid.
780 dest_version_ids.append(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))
781 if is_move and (src_account, src_container, src_name) != (dest_account, dest_container, dest_name):
782 self._delete_object(user, src_account, src_container, src_name)
785 prefix = src_name + delimiter if not src_name.endswith(delimiter) else src_name
786 src_names = self._list_objects_no_limit(user, src_account, src_container, prefix, delimiter=None, virtual=True, domain=None, keys=[], shared=False, until=None, size_range=None, all_props=True, public=False)
787 paths = [elem[0] for elem in src_names]
788 nodes = [elem[2] for elem in src_names]
789 # TODO: Will do another fetch of the properties in duplicate version...
790 props = self._get_versions(nodes) # Check to see if source exists.
792 for prop, path, node in zip(props, paths, nodes):
793 src_version_id = prop[self.SERIAL]
794 hash = prop[self.HASH]
795 vtype = prop[self.TYPE]
796 dest_prefix = dest_name + delimiter if not dest_name.endswith(delimiter) else dest_name
797 vdest_name = path.replace(prefix, dest_prefix, 1)
798 dest_version_ids.append(self._update_object_hash(user, dest_account, dest_container, vdest_name, size, vtype, hash, None, dest_domain, dest_meta, replace_meta, permissions, src_node=node, src_version_id=src_version_id, is_copy=is_copy))
799 if is_move and (src_account, src_container, src_name) != (dest_account, dest_container, dest_name):
800 self._delete_object(user, src_account, src_container, path)
801 return dest_version_ids[0] if len(dest_version_ids) == 1 else dest_version_ids
804 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, delimiter=None):
805 """Copy an object's data and metadata."""
807 logger.debug("copy_object: %s %s %s %s %s %s %s %s %s %s %s %s %s %s", user, src_account, src_container, src_name, dest_account, dest_container, dest_name, type, domain, meta, replace_meta, permissions, src_version, delimiter)
808 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, delimiter)
809 return dest_version_id
812 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, delimiter=None):
813 """Move an object's data and metadata."""
815 logger.debug("move_object: %s %s %s %s %s %s %s %s %s %s %s %s %s", user, src_account, src_container, src_name, dest_account, dest_container, dest_name, type, domain, meta, replace_meta, permissions, delimiter)
816 if user != src_account:
817 raise NotAllowedError
818 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, delimiter)
819 return dest_version_id
821 def _delete_object(self, user, account, container, name, until=None, delimiter=None):
823 raise NotAllowedError
825 if until is not None:
826 path = '/'.join((account, container, name))
827 node = self.node.node_lookup(path)
832 h, s = self.node.node_purge(node, until, CLUSTER_NORMAL)
835 h, s = self.node.node_purge(node, until, CLUSTER_HISTORY)
839 self.store.map_delete(h)
840 self.node.node_purge(node, until, CLUSTER_DELETED)
842 props = self._get_version(node)
844 self.permissions.access_clear(path)
845 self._report_size_change(user, account, -size, {'action': 'object purge'})
848 path, node = self._lookup_object(account, container, name)
849 src_version_id, dest_version_id = self._put_version_duplicate(user, node, size=0, type='', hash=None, checksum='', cluster=CLUSTER_DELETED)
850 del_size = self._apply_versioning(account, container, src_version_id)
852 self._report_size_change(user, account, -del_size, {'action': 'object delete'})
853 self._report_object_change(user, account, path, details={'action': 'object delete'})
854 self.permissions.access_clear(path)
857 prefix = name + delimiter if not name.endswith(delimiter) else name
858 src_names = self._list_objects_no_limit(user, account, container, prefix, delimiter=None, virtual=True, domain=None, keys=[], shared=False, until=None, size_range=None, all_props=True, public=False)
861 path = '/'.join((account, container, t[0]))
863 src_version_id, dest_version_id = self._put_version_duplicate(user, node, size=0, type='', hash=None, checksum='', cluster=CLUSTER_DELETED)
864 del_size = self._apply_versioning(account, container, src_version_id)
866 self._report_size_change(user, account, -del_size, {'action': 'object delete'})
867 self._report_object_change(user, account, path, details={'action': 'object delete'})
869 self.permissions.access_clear_bulk(paths)
872 def delete_object(self, user, account, container, name, until=None, prefix='', delimiter=None):
873 """Delete/purge an object."""
875 logger.debug("delete_object: %s %s %s %s %s %s %s", user, account, container, name, until, prefix, delimiter)
876 self._delete_object(user, account, container, name, until, delimiter)
879 def list_versions(self, user, account, container, name):
880 """Return a list of all (version, version_timestamp) tuples for an object."""
882 logger.debug("list_versions: %s %s %s %s", user, account, container, name)
883 self._can_read(user, account, container, name)
884 path, node = self._lookup_object(account, container, name)
885 versions = self.node.node_get_versions(node)
886 return [[x[self.SERIAL], x[self.MTIME]] for x in versions if x[self.CLUSTER] != CLUSTER_DELETED]
889 def get_uuid(self, user, uuid):
890 """Return the (account, container, name) for the UUID given."""
892 logger.debug("get_uuid: %s %s", user, uuid)
893 info = self.node.latest_uuid(uuid)
897 account, container, name = path.split('/', 2)
898 self._can_read(user, account, container, name)
899 return (account, container, name)
902 def get_public(self, user, public):
903 """Return the (account, container, name) for the public id given."""
905 logger.debug("get_public: %s %s", user, public)
906 if public is None or public < ULTIMATE_ANSWER:
908 path = self.permissions.public_path(public - ULTIMATE_ANSWER)
911 account, container, name = path.split('/', 2)
912 self._can_read(user, account, container, name)
913 return (account, container, name)
915 @backend_method(autocommit=0)
916 def get_block(self, hash):
917 """Return a block's data."""
919 logger.debug("get_block: %s", hash)
920 block = self.store.block_get(binascii.unhexlify(hash))
922 raise NameError('Block does not exist')
925 @backend_method(autocommit=0)
926 def put_block(self, data):
927 """Store a block and return the hash."""
929 logger.debug("put_block: %s", len(data))
930 return binascii.hexlify(self.store.block_put(data))
932 @backend_method(autocommit=0)
933 def update_block(self, hash, data, offset=0):
934 """Update a known block and return the hash."""
936 logger.debug("update_block: %s %s %s", hash, len(data), offset)
937 if offset == 0 and len(data) == self.block_size:
938 return self.put_block(data)
939 h = self.store.block_update(binascii.unhexlify(hash), offset, data)
940 return binascii.hexlify(h)
944 def _generate_uuid(self):
945 return str(uuidlib.uuid4())
947 def _put_object_node(self, path, parent, name):
948 path = '/'.join((path, name))
949 node = self.node.node_lookup(path)
951 node = self.node.node_create(parent, path)
954 def _put_path(self, user, parent, path):
955 node = self.node.node_create(parent, path)
956 self.node.version_create(node, None, 0, '', None, user, self._generate_uuid(), '', CLUSTER_NORMAL)
959 def _lookup_account(self, account, create=True):
960 node = self.node.node_lookup(account)
961 if node is None and create:
962 node = self._put_path(account, self.ROOTNODE, account) # User is account.
965 def _lookup_container(self, account, container):
966 path = '/'.join((account, container))
967 node = self.node.node_lookup(path)
969 raise NameError('Container does not exist')
972 def _lookup_object(self, account, container, name):
973 path = '/'.join((account, container, name))
974 node = self.node.node_lookup(path)
976 raise NameError('Object does not exist')
979 def _lookup_objects(self, paths):
980 nodes = self.node.node_lookup_bulk(paths)
982 raise NameError('Object does not exist')
985 def _get_properties(self, node, until=None):
986 """Return properties until the timestamp given."""
988 before = until if until is not None else inf
989 props = self.node.version_lookup(node, before, CLUSTER_NORMAL)
990 if props is None and until is not None:
991 props = self.node.version_lookup(node, before, CLUSTER_HISTORY)
993 raise NameError('Path does not exist')
996 def _get_statistics(self, node, until=None):
997 """Return count, sum of size and latest timestamp of everything under node."""
1000 stats = self.node.statistics_get(node, CLUSTER_NORMAL)
1002 stats = self.node.statistics_latest(node, until, CLUSTER_DELETED)
1007 def _get_version(self, node, version=None):
1009 props = self.node.version_lookup(node, inf, CLUSTER_NORMAL)
1011 raise NameError('Object does not exist')
1014 version = int(version)
1016 raise IndexError('Version does not exist')
1017 props = self.node.version_get_properties(version)
1018 if props is None or props[self.CLUSTER] == CLUSTER_DELETED:
1019 raise IndexError('Version does not exist')
1022 def _get_versions(self, nodes, version=None):
1024 props = self.node.version_lookup_bulk(nodes, inf, CLUSTER_NORMAL)
1026 raise NameError('Object does not exist')
1029 version = int(version)
1031 raise IndexError('Version does not exist')
1032 props = self.node.version_get_properties(version)
1033 if props is None or props[self.CLUSTER] == CLUSTER_DELETED:
1034 raise IndexError('Version does not exist')
1037 def _put_version_duplicate(self, user, node, src_node=None, size=None, type=None, hash=None, checksum=None, cluster=CLUSTER_NORMAL, is_copy=False):
1038 """Create a new version of the node."""
1040 props = self.node.version_lookup(node if src_node is None else src_node, inf, CLUSTER_NORMAL)
1041 if props is not None:
1042 src_version_id = props[self.SERIAL]
1043 src_hash = props[self.HASH]
1044 src_size = props[self.SIZE]
1045 src_type = props[self.TYPE]
1046 src_checksum = props[self.CHECKSUM]
1048 src_version_id = None
1053 if size is None: # Set metadata.
1054 hash = src_hash # This way hash can be set to None (account or container).
1058 if checksum is None:
1059 checksum = src_checksum
1060 uuid = self._generate_uuid() if (is_copy or src_version_id is None) else props[self.UUID]
1062 if src_node is None:
1063 pre_version_id = src_version_id
1065 pre_version_id = None
1066 props = self.node.version_lookup(node, inf, CLUSTER_NORMAL)
1067 if props is not None:
1068 pre_version_id = props[self.SERIAL]
1069 if pre_version_id is not None:
1070 self.node.version_recluster(pre_version_id, CLUSTER_HISTORY)
1072 dest_version_id, mtime = self.node.version_create(node, hash, size, type, src_version_id, user, uuid, checksum, cluster)
1073 return pre_version_id, dest_version_id
1075 def _put_metadata_duplicate(self, src_version_id, dest_version_id, domain, meta, replace=False):
1076 if src_version_id is not None:
1077 self.node.attribute_copy(src_version_id, dest_version_id)
1079 self.node.attribute_del(dest_version_id, domain, (k for k, v in meta.iteritems() if v == ''))
1080 self.node.attribute_set(dest_version_id, domain, ((k, v) for k, v in meta.iteritems() if v != ''))
1082 self.node.attribute_del(dest_version_id, domain)
1083 self.node.attribute_set(dest_version_id, domain, ((k, v) for k, v in meta.iteritems()))
1085 def _put_metadata(self, user, node, domain, meta, replace=False):
1086 """Create a new version and store metadata."""
1088 src_version_id, dest_version_id = self._put_version_duplicate(user, node)
1089 self._put_metadata_duplicate(src_version_id, dest_version_id, domain, meta, replace)
1090 return src_version_id, dest_version_id
1092 def _list_limits(self, listing, marker, limit):
1096 start = listing.index(marker) + 1
1099 if not limit or limit > 10000:
1103 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):
1104 cont_prefix = path + '/'
1105 prefix = cont_prefix + prefix
1106 start = cont_prefix + marker if marker else None
1107 before = until if until is not None else inf
1108 filterq = keys if domain else []
1111 objects, prefixes = self.node.latest_version_list(parent, prefix, delimiter, start, limit, before, CLUSTER_DELETED, allowed, domain, filterq, sizeq, all_props)
1112 objects.extend([(p, None) for p in prefixes] if virtual else [])
1113 objects.sort(key=lambda x: x[0])
1114 objects = [(x[0][len(cont_prefix):],) + x[1:] for x in objects]
1117 # Reporting functions.
1119 def _report_size_change(self, user, account, size, details={}):
1120 logger.debug("_report_size_change: %s %s %s %s", user, account, size, details)
1121 account_node = self._lookup_account(account, True)[1]
1122 total = self._get_statistics(account_node)[1]
1123 details.update({'user': user, 'total': total})
1124 self.messages.append((QUEUE_MESSAGE_KEY_PREFIX % ('resource.diskspace',), account, QUEUE_INSTANCE_ID, 'diskspace', float(size), details))
1126 def _report_object_change(self, user, account, path, details={}):
1127 logger.debug("_report_object_change: %s %s %s %s", user, account, path, details)
1128 details.update({'user': user})
1129 self.messages.append((QUEUE_MESSAGE_KEY_PREFIX % ('object',), account, QUEUE_INSTANCE_ID, 'object', path, details))
1131 def _report_sharing_change(self, user, account, path, details={}):
1132 logger.debug("_report_permissions_change: %s %s %s %s", user, account, path, details)
1133 details.update({'user': user})
1134 self.messages.append((QUEUE_MESSAGE_KEY_PREFIX % ('sharing',), account, QUEUE_INSTANCE_ID, 'sharing', path, details))
1138 def _check_policy(self, policy):
1139 for k in policy.keys():
1141 policy[k] = self.default_policy.get(k)
1142 for k, v in policy.iteritems():
1144 q = int(v) # May raise ValueError.
1147 elif k == 'versioning':
1148 if v not in ['auto', 'none']:
1153 def _put_policy(self, node, policy, replace):
1155 for k, v in self.default_policy.iteritems():
1158 self.node.policy_set(node, policy)
1160 def _get_policy(self, node):
1161 policy = self.default_policy.copy()
1162 policy.update(self.node.policy_get(node))
1165 def _apply_versioning(self, account, container, version_id):
1166 """Delete the provided version if such is the policy.
1167 Return size of object removed.
1170 if version_id is None:
1172 path, node = self._lookup_container(account, container)
1173 versioning = self._get_policy(node)['versioning']
1174 if versioning != 'auto':
1175 hash, size = self.node.version_remove(version_id)
1176 self.store.map_delete(hash)
1180 # Access control functions.
1182 def _check_groups(self, groups):
1183 # raise ValueError('Bad characters in groups')
1186 def _check_permissions(self, path, permissions):
1187 # raise ValueError('Bad characters in permissions')
1190 def _get_formatted_paths(self, paths):
1193 node = self.node.node_lookup(p)
1194 if node is not None:
1195 props = self.node.version_lookup(node, inf, CLUSTER_NORMAL)
1196 if props is not None:
1197 if props[self.TYPE].split(';', 1)[0].strip() in ('application/directory', 'application/folder'):
1198 formatted.append((p.rstrip('/') + '/', self.MATCH_PREFIX))
1199 formatted.append((p, self.MATCH_EXACT))
1202 def _get_permissions_path(self, account, container, name):
1203 path = '/'.join((account, container, name))
1204 permission_paths = self.permissions.access_inherit(path)
1205 permission_paths.sort()
1206 permission_paths.reverse()
1207 for p in permission_paths:
1211 if p.count('/') < 2:
1213 node = self.node.node_lookup(p)
1214 if node is not None:
1215 props = self.node.version_lookup(node, inf, CLUSTER_NORMAL)
1216 if props is not None:
1217 if props[self.TYPE].split(';', 1)[0].strip() in ('application/directory', 'application/folder'):
1221 def _can_read(self, user, account, container, name):
1224 path = '/'.join((account, container, name))
1225 if self.permissions.public_get(path) is not None:
1227 path = self._get_permissions_path(account, container, name)
1229 raise NotAllowedError
1230 if not self.permissions.access_check(path, self.READ, user) and not self.permissions.access_check(path, self.WRITE, user):
1231 raise NotAllowedError
1233 def _can_write(self, user, account, container, name):
1236 path = '/'.join((account, container, name))
1237 path = self._get_permissions_path(account, container, name)
1239 raise NotAllowedError
1240 if not self.permissions.access_check(path, self.WRITE, user):
1241 raise NotAllowedError
1243 def _allowed_accounts(self, user):
1245 for path in self.permissions.access_list_paths(user):
1246 allow.add(path.split('/', 1)[0])
1247 return sorted(allow)
1249 def _allowed_containers(self, user, account):
1251 for path in self.permissions.access_list_paths(user, account):
1252 allow.add(path.split('/', 2)[1])
1253 return sorted(allow)