import itertools
import ciso8601
-from arvados.util import portable_data_hash_pattern, uuid_pattern, collection_uuid_pattern, group_uuid_pattern, user_uuid_pattern, link_uuid_pattern
-
-_logger = logging.getLogger('arvados.arvados_fuse')
-
-# Match any character which FUSE or Linux cannot accommodate as part
-# of a filename. (If present in a collection filename, they will
-# appear as underscores in the fuse mount.)
-_disallowed_filename_characters = re.compile('[\x00/]')
-
-def convertTime(t):
- """Parse Arvados timestamp to unix time."""
- if not t:
- return 0
- try:
- return calendar.timegm(ciso8601.parse_datetime_unaware(t).timetuple())
- except (TypeError, ValueError):
- return 0
-
-def sanitize_filename(dirty):
- '''Replace disallowed filename characters with harmless "_".'''
- if dirty is None:
- return None
- elif dirty == '':
- return '_'
- elif dirty == '.':
- return '_'
- elif dirty == '..':
- return '__'
- else:
- return _disallowed_filename_characters.sub('_', dirty)
-
-
-class FreshBase(object):
- '''Base class for maintaining fresh/stale state to determine when to update.'''
- def __init__(self):
- self._stale = True
- self._poll = False
- self._last_update = time.time()
- self._atime = time.time()
- self._poll_time = 60
-
- # Mark the value as stale
- def invalidate(self):
- self._stale = True
-
- # Test if the entries dict is stale.
- def stale(self):
- if self._stale:
- return True
- if self._poll:
- return (self._last_update + self._poll_time) < self._atime
- return False
-
- def fresh(self):
- self._stale = False
- self._last_update = time.time()
-
- def atime(self):
- return self._atime
-
-class File(FreshBase):
- '''Base for file objects.'''
-
- def __init__(self, parent_inode, _mtime=0):
- super(File, self).__init__()
- self.inode = None
- self.parent_inode = parent_inode
- self._mtime = _mtime
-
- def size(self):
- return 0
-
- def readfrom(self, off, size):
- return ''
-
- def mtime(self):
- return self._mtime
-
-
-class StreamReaderFile(File):
- '''Wraps a StreamFileReader as a file.'''
-
- def __init__(self, parent_inode, reader, _mtime):
- super(StreamReaderFile, self).__init__(parent_inode, _mtime)
- self.reader = reader
-
- def size(self):
- return self.reader.size()
-
- def readfrom(self, off, size):
- return self.reader.readfrom(off, size)
-
- def stale(self):
- return False
-
-
-class StringFile(File):
- '''Wrap a simple string as a file'''
- def __init__(self, parent_inode, contents, _mtime):
- super(StringFile, self).__init__(parent_inode, _mtime)
- self.contents = contents
-
- def size(self):
- return len(self.contents)
-
- def readfrom(self, off, size):
- return self.contents[off:(off+size)]
-
-
-class ObjectFile(StringFile):
- '''Wrap a dict as a serialized json object.'''
-
- def __init__(self, parent_inode, obj):
- super(ObjectFile, self).__init__(parent_inode, "", 0)
- self.uuid = obj['uuid']
- self.update(obj)
-
- def update(self, obj):
- self._mtime = convertTime(obj['modified_at']) if 'modified_at' in obj else 0
- self.contents = json.dumps(obj, indent=4, sort_keys=True) + "\n"
-
-
-class Directory(FreshBase):
- '''Generic directory object, backed by a dict.
- Consists of a set of entries with the key representing the filename
- and the value referencing a File or Directory object.
- '''
-
- def __init__(self, parent_inode):
- super(Directory, self).__init__()
-
- '''parent_inode is the integer inode number'''
- self.inode = None
- if not isinstance(parent_inode, int):
- raise Exception("parent_inode should be an int")
- self.parent_inode = parent_inode
- self._entries = {}
- self._mtime = time.time()
-
- # Overriden by subclasses to implement logic to update the entries dict
- # when the directory is stale
- def update(self):
- pass
-
- # Only used when computing the size of the disk footprint of the directory
- # (stub)
- def size(self):
- return 0
-
- def checkupdate(self):
- if self.stale():
- try:
- self.update()
- except apiclient.errors.HttpError as e:
- _logger.debug(e)
-
- def __getitem__(self, item):
- self.checkupdate()
- return self._entries[item]
-
- def items(self):
- self.checkupdate()
- return self._entries.items()
-
- def __iter__(self):
- self.checkupdate()
- return self._entries.iterkeys()
-
- def __contains__(self, k):
- self.checkupdate()
- return k in self._entries
+from fusedir import sanitize_filename, CollectionDirectory, MagicDirectory, TagsDirectory, ProjectDirectory, SharedDirectory
- def merge(self, items, fn, same, new_entry):
- '''Helper method for updating the contents of the directory. Takes a list
- describing the new contents of the directory, reuse entries that are
- the same in both the old and new lists, create new entries, and delete
- old entries missing from the new list.
-
- items: iterable with new directory contents
-
- fn: function to take an entry in 'items' and return the desired file or
- directory name, or None if this entry should be skipped
-
- same: function to compare an existing entry (a File or Directory
- object) with an entry in the items list to determine whether to keep
- the existing entry.
-
- new_entry: function to create a new directory entry (File or Directory
- object) from an entry in the items list.
-
- '''
-
- oldentries = self._entries
- self._entries = {}
- changed = False
- for i in items:
- name = sanitize_filename(fn(i))
- if name:
- if name in oldentries and same(oldentries[name], i):
- # move existing directory entry over
- self._entries[name] = oldentries[name]
- del oldentries[name]
- else:
- # create new directory entry
- ent = new_entry(i)
- if ent is not None:
- self._entries[name] = self.inodes.add_entry(ent)
- changed = True
-
- # delete any other directory entries that were not in found in 'items'
- for i in oldentries:
- llfuse.invalidate_entry(self.inode, str(i))
- self.inodes.del_entry(oldentries[i])
- changed = True
-
- if changed:
- self._mtime = time.time()
-
- self.fresh()
-
- def clear(self):
- '''Delete all entries'''
- oldentries = self._entries
- self._entries = {}
- for n in oldentries:
- if isinstance(n, Directory):
- n.clear()
- llfuse.invalidate_entry(self.inode, str(n))
- self.inodes.del_entry(oldentries[n])
- llfuse.invalidate_inode(self.inode)
- self.invalidate()
-
- def mtime(self):
- return self._mtime
-
-
-class CollectionDirectory(Directory):
- '''Represents the root of a directory tree holding a collection.'''
-
- def __init__(self, parent_inode, inodes, api, num_retries, collection):
- super(CollectionDirectory, self).__init__(parent_inode)
- self.inodes = inodes
- self.api = api
- self.num_retries = num_retries
- self.collection_object_file = None
- self.collection_object = None
- if isinstance(collection, dict):
- self.collection_locator = collection['uuid']
- self._mtime = convertTime(collection.get('modified_at'))
- else:
- self.collection_locator = collection
- self._mtime = 0
-
- def same(self, i):
- return i['uuid'] == self.collection_locator or i['portable_data_hash'] == self.collection_locator
-
- # Used by arv-web.py to switch the contents of the CollectionDirectory
- def change_collection(self, new_locator):
- """Switch the contents of the CollectionDirectory. Must be called with llfuse.lock held."""
- self.collection_locator = new_locator
- self.collection_object = None
- self.update()
-
- def new_collection(self, new_collection_object, coll_reader):
- self.collection_object = new_collection_object
-
- self._mtime = convertTime(self.collection_object.get('modified_at'))
-
- if self.collection_object_file is not None:
- self.collection_object_file.update(self.collection_object)
-
- self.clear()
- for s in coll_reader.all_streams():
- cwd = self
- for part in s.name().split('/'):
- if part != '' and part != '.':
- partname = sanitize_filename(part)
- if partname not in cwd._entries:
- cwd._entries[partname] = self.inodes.add_entry(Directory(cwd.inode))
- cwd = cwd._entries[partname]
- for k, v in s.files().items():
- cwd._entries[sanitize_filename(k)] = self.inodes.add_entry(StreamReaderFile(cwd.inode, v, self.mtime()))
-
- def update(self):
- try:
- if self.collection_object is not None and portable_data_hash_pattern.match(self.collection_locator):
- return True
-
- if self.collection_locator is None:
- self.fresh()
- return True
-
- with llfuse.lock_released:
- coll_reader = arvados.CollectionReader(
- self.collection_locator, self.api, self.api.keep,
- num_retries=self.num_retries)
- new_collection_object = coll_reader.api_response() or {}
- # If the Collection only exists in Keep, there will be no API
- # response. Fill in the fields we need.
- if 'uuid' not in new_collection_object:
- new_collection_object['uuid'] = self.collection_locator
- if "portable_data_hash" not in new_collection_object:
- new_collection_object["portable_data_hash"] = new_collection_object["uuid"]
- if 'manifest_text' not in new_collection_object:
- new_collection_object['manifest_text'] = coll_reader.manifest_text()
- coll_reader.normalize()
- # end with llfuse.lock_released, re-acquire lock
-
- if self.collection_object is None or self.collection_object["portable_data_hash"] != new_collection_object["portable_data_hash"]:
- self.new_collection(new_collection_object, coll_reader)
-
- self.fresh()
- return True
- except arvados.errors.NotFoundError:
- _logger.exception("arv-mount %s: error", self.collection_locator)
- except arvados.errors.ArgumentError as detail:
- _logger.warning("arv-mount %s: error %s", self.collection_locator, detail)
- if self.collection_object is not None and "manifest_text" in self.collection_object:
- _logger.warning("arv-mount manifest_text is: %s", self.collection_object["manifest_text"])
- except Exception:
- _logger.exception("arv-mount %s: error", self.collection_locator)
- if self.collection_object is not None and "manifest_text" in self.collection_object:
- _logger.error("arv-mount manifest_text is: %s", self.collection_object["manifest_text"])
- return False
-
- def __getitem__(self, item):
- self.checkupdate()
- if item == '.arvados#collection':
- if self.collection_object_file is None:
- self.collection_object_file = ObjectFile(self.inode, self.collection_object)
- self.inodes.add_entry(self.collection_object_file)
- return self.collection_object_file
- else:
- return super(CollectionDirectory, self).__getitem__(item)
-
- def __contains__(self, k):
- if k == '.arvados#collection':
- return True
- else:
- return super(CollectionDirectory, self).__contains__(k)
-
-
-class MagicDirectory(Directory):
- '''A special directory that logically contains the set of all extant keep
- locators. When a file is referenced by lookup(), it is tested to see if it
- is a valid keep locator to a manifest, and if so, loads the manifest
- contents as a subdirectory of this directory with the locator as the
- directory name. Since querying a list of all extant keep locators is
- impractical, only collections that have already been accessed are visible
- to readdir().
- '''
-
- README_TEXT = '''
-This directory provides access to Arvados collections as subdirectories listed
-by uuid (in the form 'zzzzz-4zz18-1234567890abcde') or portable data hash (in
-the form '1234567890abcdefghijklmnopqrstuv+123').
-
-Note that this directory will appear empty until you attempt to access a
-specific collection subdirectory (such as trying to 'cd' into it), at which
-point the collection will actually be looked up on the server and the directory
-will appear if it exists.
-'''.lstrip()
-
- def __init__(self, parent_inode, inodes, api, num_retries):
- super(MagicDirectory, self).__init__(parent_inode)
- self.inodes = inodes
- self.api = api
- self.num_retries = num_retries
-
- def __setattr__(self, name, value):
- super(MagicDirectory, self).__setattr__(name, value)
- # When we're assigned an inode, add a README.
- if ((name == 'inode') and (self.inode is not None) and
- (not self._entries)):
- self._entries['README'] = self.inodes.add_entry(
- StringFile(self.inode, self.README_TEXT, time.time()))
- # If we're the root directory, add an identical by_id subdirectory.
- if self.inode == llfuse.ROOT_INODE:
- self._entries['by_id'] = self.inodes.add_entry(MagicDirectory(
- self.inode, self.inodes, self.api, self.num_retries))
-
- def __contains__(self, k):
- if k in self._entries:
- return True
-
- if not portable_data_hash_pattern.match(k) and not uuid_pattern.match(k):
- return False
-
- try:
- e = self.inodes.add_entry(CollectionDirectory(
- self.inode, self.inodes, self.api, self.num_retries, k))
- if e.update():
- self._entries[k] = e
- return True
- else:
- return False
- except Exception as e:
- _logger.debug('arv-mount exception keep %s', e)
- return False
-
- def __getitem__(self, item):
- if item in self:
- return self._entries[item]
- else:
- raise KeyError("No collection with id " + item)
-
-
-class RecursiveInvalidateDirectory(Directory):
- def invalidate(self):
- if self.inode == llfuse.ROOT_INODE:
- llfuse.lock.acquire()
- try:
- super(RecursiveInvalidateDirectory, self).invalidate()
- for a in self._entries:
- self._entries[a].invalidate()
- except Exception:
- _logger.exception()
- finally:
- if self.inode == llfuse.ROOT_INODE:
- llfuse.lock.release()
-
-
-class TagsDirectory(RecursiveInvalidateDirectory):
- '''A special directory that contains as subdirectories all tags visible to the user.'''
-
- def __init__(self, parent_inode, inodes, api, num_retries, poll_time=60):
- super(TagsDirectory, self).__init__(parent_inode)
- self.inodes = inodes
- self.api = api
- self.num_retries = num_retries
- self._poll = True
- self._poll_time = poll_time
-
- def update(self):
- with llfuse.lock_released:
- tags = self.api.links().list(
- filters=[['link_class', '=', 'tag']],
- select=['name'], distinct=True
- ).execute(num_retries=self.num_retries)
- if "items" in tags:
- self.merge(tags['items'],
- lambda i: i['name'],
- lambda a, i: a.tag == i['name'],
- lambda i: TagDirectory(self.inode, self.inodes, self.api, self.num_retries, i['name'], poll=self._poll, poll_time=self._poll_time))
-
-
-class TagDirectory(Directory):
- '''A special directory that contains as subdirectories all collections visible
- to the user that are tagged with a particular tag.
- '''
-
- def __init__(self, parent_inode, inodes, api, num_retries, tag,
- poll=False, poll_time=60):
- super(TagDirectory, self).__init__(parent_inode)
- self.inodes = inodes
- self.api = api
- self.num_retries = num_retries
- self.tag = tag
- self._poll = poll
- self._poll_time = poll_time
-
- def update(self):
- with llfuse.lock_released:
- taggedcollections = self.api.links().list(
- filters=[['link_class', '=', 'tag'],
- ['name', '=', self.tag],
- ['head_uuid', 'is_a', 'arvados#collection']],
- select=['head_uuid']
- ).execute(num_retries=self.num_retries)
- self.merge(taggedcollections['items'],
- lambda i: i['head_uuid'],
- lambda a, i: a.collection_locator == i['head_uuid'],
- lambda i: CollectionDirectory(self.inode, self.inodes, self.api, self.num_retries, i['head_uuid']))
-
-
-class ProjectDirectory(Directory):
- '''A special directory that contains the contents of a project.'''
-
- def __init__(self, parent_inode, inodes, api, num_retries, project_object,
- poll=False, poll_time=60):
- super(ProjectDirectory, self).__init__(parent_inode)
- self.inodes = inodes
- self.api = api
- self.num_retries = num_retries
- self.project_object = project_object
- self.project_object_file = None
- self.uuid = project_object['uuid']
- self._poll = poll
- self._poll_time = poll_time
-
- def createDirectory(self, i):
- if collection_uuid_pattern.match(i['uuid']):
- return CollectionDirectory(self.inode, self.inodes, self.api, self.num_retries, i)
- elif group_uuid_pattern.match(i['uuid']):
- return ProjectDirectory(self.inode, self.inodes, self.api, self.num_retries, i, self._poll, self._poll_time)
- elif link_uuid_pattern.match(i['uuid']):
- if i['head_kind'] == 'arvados#collection' or portable_data_hash_pattern.match(i['head_uuid']):
- return CollectionDirectory(self.inode, self.inodes, self.api, self.num_retries, i['head_uuid'])
- else:
- return None
- elif uuid_pattern.match(i['uuid']):
- return ObjectFile(self.parent_inode, i)
- else:
- return None
-
- def update(self):
- if self.project_object_file == None:
- self.project_object_file = ObjectFile(self.inode, self.project_object)
- self.inodes.add_entry(self.project_object_file)
-
- def namefn(i):
- if 'name' in i:
- if i['name'] is None or len(i['name']) == 0:
- return None
- elif collection_uuid_pattern.match(i['uuid']) or group_uuid_pattern.match(i['uuid']):
- # collection or subproject
- return i['name']
- elif link_uuid_pattern.match(i['uuid']) and i['head_kind'] == 'arvados#collection':
- # name link
- return i['name']
- elif 'kind' in i and i['kind'].startswith('arvados#'):
- # something else
- return "{}.{}".format(i['name'], i['kind'][8:])
- else:
- return None
-
- def samefn(a, i):
- if isinstance(a, CollectionDirectory):
- return a.collection_locator == i['uuid']
- elif isinstance(a, ProjectDirectory):
- return a.uuid == i['uuid']
- elif isinstance(a, ObjectFile):
- return a.uuid == i['uuid'] and not a.stale()
- return False
-
- with llfuse.lock_released:
- if group_uuid_pattern.match(self.uuid):
- self.project_object = self.api.groups().get(
- uuid=self.uuid).execute(num_retries=self.num_retries)
- elif user_uuid_pattern.match(self.uuid):
- self.project_object = self.api.users().get(
- uuid=self.uuid).execute(num_retries=self.num_retries)
-
- contents = arvados.util.list_all(self.api.groups().contents,
- self.num_retries, uuid=self.uuid)
- # Name links will be obsolete soon, take this out when there are no more pre-#3036 in use.
- contents += arvados.util.list_all(
- self.api.links().list, self.num_retries,
- filters=[['tail_uuid', '=', self.uuid],
- ['link_class', '=', 'name']])
-
- # end with llfuse.lock_released, re-acquire lock
-
- self.merge(contents,
- namefn,
- samefn,
- self.createDirectory)
-
- def __getitem__(self, item):
- self.checkupdate()
- if item == '.arvados#project':
- return self.project_object_file
- else:
- return super(ProjectDirectory, self).__getitem__(item)
+from arvados.util import portable_data_hash_pattern, uuid_pattern, collection_uuid_pattern, group_uuid_pattern, user_uuid_pattern, link_uuid_pattern
- def __contains__(self, k):
- if k == '.arvados#project':
- return True
- else:
- return super(ProjectDirectory, self).__contains__(k)
-
-
-class SharedDirectory(Directory):
- '''A special directory that represents users or groups who have shared projects with me.'''
-
- def __init__(self, parent_inode, inodes, api, num_retries, exclude,
- poll=False, poll_time=60):
- super(SharedDirectory, self).__init__(parent_inode)
- self.inodes = inodes
- self.api = api
- self.num_retries = num_retries
- self.current_user = api.users().current().execute(num_retries=num_retries)
- self._poll = True
- self._poll_time = poll_time
-
- def update(self):
- with llfuse.lock_released:
- all_projects = arvados.util.list_all(
- self.api.groups().list, self.num_retries,
- filters=[['group_class','=','project']])
- objects = {}
- for ob in all_projects:
- objects[ob['uuid']] = ob
-
- roots = []
- root_owners = {}
- for ob in all_projects:
- if ob['owner_uuid'] != self.current_user['uuid'] and ob['owner_uuid'] not in objects:
- roots.append(ob)
- root_owners[ob['owner_uuid']] = True
-
- lusers = arvados.util.list_all(
- self.api.users().list, self.num_retries,
- filters=[['uuid','in', list(root_owners)]])
- lgroups = arvados.util.list_all(
- self.api.groups().list, self.num_retries,
- filters=[['uuid','in', list(root_owners)]])
-
- users = {}
- groups = {}
-
- for l in lusers:
- objects[l["uuid"]] = l
- for l in lgroups:
- objects[l["uuid"]] = l
-
- contents = {}
- for r in root_owners:
- if r in objects:
- obr = objects[r]
- if "name" in obr:
- contents[obr["name"]] = obr
- if "first_name" in obr:
- contents[u"{} {}".format(obr["first_name"], obr["last_name"])] = obr
-
- for r in roots:
- if r['owner_uuid'] not in objects:
- contents[r['name']] = r
-
- # end with llfuse.lock_released, re-acquire lock
- try:
- self.merge(contents.items(),
- lambda i: i[0],
- lambda a, i: a.uuid == i[1]['uuid'],
- lambda i: ProjectDirectory(self.inode, self.inodes, self.api, self.num_retries, i[1], poll=self._poll, poll_time=self._poll_time))
- except Exception:
- _logger.exception()
+_logger = logging.getLogger('arvados.arvados_fuse')
class FileHandle(object):
- '''Connects a numeric file handle to a File or Directory object that has
- been opened by the client.'''
+ """Connects a numeric file handle to a File or Directory object that has
+ been opened by the client."""
def __init__(self, fh, entry):
self.fh = fh
class Inodes(object):
- '''Manage the set of inodes. This is the mapping from a numeric id
- to a concrete File or Directory object'''
+ """Manage the set of inodes. This is the mapping from a numeric id
+ to a concrete File or Directory object"""
def __init__(self):
self._entries = {}
llfuse.invalidate_inode(entry.inode)
del self._entries[entry.inode]
+
class Operations(llfuse.Operations):
- '''This is the main interface with llfuse. The methods on this object are
- called by llfuse threads to service FUSE events to query and read from
- the file system.
+ """This is the main interface with llfuse.
+
+ The methods on this object are called by llfuse threads to service FUSE
+ events to query and read from the file system.
llfuse has its own global lock which is acquired before calling a request handler,
so request handlers do not run concurrently unless the lock is explicitly released
- using "with llfuse.lock_released:"'''
+ using 'with llfuse.lock_released:'
+
+ """
def __init__(self, uid, gid, encoding="utf-8"):
super(Operations, self).__init__()
--- /dev/null
+import logging
+import re
+
+from fresh import FreshBase, convertTime
+
+_logger = logging.getLogger('arvados.arvados_fuse')
+
+
+# Match any character which FUSE or Linux cannot accommodate as part
+# of a filename. (If present in a collection filename, they will
+# appear as underscores in the fuse mount.)
+_disallowed_filename_characters = re.compile('[\x00/]')
+
+def sanitize_filename(dirty):
+ """Replace disallowed filename characters with harmless "_"."""
+ if dirty is None:
+ return None
+ elif dirty == '':
+ return '_'
+ elif dirty == '.':
+ return '_'
+ elif dirty == '..':
+ return '__'
+ else:
+ return _disallowed_filename_characters.sub('_', dirty)
+
+
+class Directory(FreshBase):
+ """Generic directory object, backed by a dict.
+
+ Consists of a set of entries with the key representing the filename
+ and the value referencing a File or Directory object.
+ """
+
+ def __init__(self, parent_inode):
+ super(Directory, self).__init__()
+
+ """parent_inode is the integer inode number"""
+ self.inode = None
+ if not isinstance(parent_inode, int):
+ raise Exception("parent_inode should be an int")
+ self.parent_inode = parent_inode
+ self._entries = {}
+ self._mtime = time.time()
+
+ # Overriden by subclasses to implement logic to update the entries dict
+ # when the directory is stale
+ def update(self):
+ pass
+
+ # Only used when computing the size of the disk footprint of the directory
+ # (stub)
+ def size(self):
+ return 0
+
+ def checkupdate(self):
+ if self.stale():
+ try:
+ self.update()
+ except apiclient.errors.HttpError as e:
+ _logger.debug(e)
+
+ def __getitem__(self, item):
+ self.checkupdate()
+ return self._entries[item]
+
+ def items(self):
+ self.checkupdate()
+ return self._entries.items()
+
+ def __iter__(self):
+ self.checkupdate()
+ return self._entries.iterkeys()
+
+ def __contains__(self, k):
+ self.checkupdate()
+ return k in self._entries
+
+ def merge(self, items, fn, same, new_entry):
+ """Helper method for updating the contents of the directory.
+
+ Takes a list describing the new contents of the directory, reuse
+ entries that are the same in both the old and new lists, create new
+ entries, and delete old entries missing from the new list.
+
+ :items: iterable with new directory contents
+
+ :fn: function to take an entry in 'items' and return the desired file or
+ directory name, or None if this entry should be skipped
+
+ :same: function to compare an existing entry (a File or Directory
+ object) with an entry in the items list to determine whether to keep
+ the existing entry.
+
+ :new_entry: function to create a new directory entry (File or Directory
+ object) from an entry in the items list.
+
+ """
+
+ oldentries = self._entries
+ self._entries = {}
+ changed = False
+ for i in items:
+ name = sanitize_filename(fn(i))
+ if name:
+ if name in oldentries and same(oldentries[name], i):
+ # move existing directory entry over
+ self._entries[name] = oldentries[name]
+ del oldentries[name]
+ else:
+ # create new directory entry
+ ent = new_entry(i)
+ if ent is not None:
+ self._entries[name] = self.inodes.add_entry(ent)
+ changed = True
+
+ # delete any other directory entries that were not in found in 'items'
+ for i in oldentries:
+ llfuse.invalidate_entry(self.inode, str(i))
+ self.inodes.del_entry(oldentries[i])
+ changed = True
+
+ if changed:
+ self._mtime = time.time()
+
+ self.fresh()
+
+ def clear(self):
+ """Delete all entries"""
+ oldentries = self._entries
+ self._entries = {}
+ for n in oldentries:
+ if isinstance(n, Directory):
+ n.clear()
+ llfuse.invalidate_entry(self.inode, str(n))
+ self.inodes.del_entry(oldentries[n])
+ llfuse.invalidate_inode(self.inode)
+ self.invalidate()
+
+ def mtime(self):
+ return self._mtime
+
+
+class CollectionDirectory(Directory):
+ """Represents the root of a directory tree holding a collection."""
+
+ def __init__(self, parent_inode, inodes, api, num_retries, collection):
+ super(CollectionDirectory, self).__init__(parent_inode)
+ self.inodes = inodes
+ self.api = api
+ self.num_retries = num_retries
+ self.collection_object_file = None
+ self.collection_object = None
+ if isinstance(collection, dict):
+ self.collection_locator = collection['uuid']
+ self._mtime = convertTime(collection.get('modified_at'))
+ else:
+ self.collection_locator = collection
+ self._mtime = 0
+
+ def same(self, i):
+ return i['uuid'] == self.collection_locator or i['portable_data_hash'] == self.collection_locator
+
+ # Used by arv-web.py to switch the contents of the CollectionDirectory
+ def change_collection(self, new_locator):
+ """Switch the contents of the CollectionDirectory.
+
+ Must be called with llfuse.lock held.
+ """
+
+ self.collection_locator = new_locator
+ self.collection_object = None
+ self.update()
+
+ def new_collection(self, new_collection_object, coll_reader):
+ self.collection_object = new_collection_object
+
+ self._mtime = convertTime(self.collection_object.get('modified_at'))
+
+ if self.collection_object_file is not None:
+ self.collection_object_file.update(self.collection_object)
+
+ self.clear()
+ for s in coll_reader.all_streams():
+ cwd = self
+ for part in s.name().split('/'):
+ if part != '' and part != '.':
+ partname = sanitize_filename(part)
+ if partname not in cwd._entries:
+ cwd._entries[partname] = self.inodes.add_entry(Directory(cwd.inode))
+ cwd = cwd._entries[partname]
+ for k, v in s.files().items():
+ cwd._entries[sanitize_filename(k)] = self.inodes.add_entry(StreamReaderFile(cwd.inode, v, self.mtime()))
+
+ def update(self):
+ try:
+ if self.collection_object is not None and portable_data_hash_pattern.match(self.collection_locator):
+ return True
+
+ if self.collection_locator is None:
+ self.fresh()
+ return True
+
+ with llfuse.lock_released:
+ coll_reader = arvados.CollectionReader(
+ self.collection_locator, self.api, self.api.keep,
+ num_retries=self.num_retries)
+ new_collection_object = coll_reader.api_response() or {}
+ # If the Collection only exists in Keep, there will be no API
+ # response. Fill in the fields we need.
+ if 'uuid' not in new_collection_object:
+ new_collection_object['uuid'] = self.collection_locator
+ if "portable_data_hash" not in new_collection_object:
+ new_collection_object["portable_data_hash"] = new_collection_object["uuid"]
+ if 'manifest_text' not in new_collection_object:
+ new_collection_object['manifest_text'] = coll_reader.manifest_text()
+ coll_reader.normalize()
+ # end with llfuse.lock_released, re-acquire lock
+
+ if self.collection_object is None or self.collection_object["portable_data_hash"] != new_collection_object["portable_data_hash"]:
+ self.new_collection(new_collection_object, coll_reader)
+
+ self.fresh()
+ return True
+ except arvados.errors.NotFoundError:
+ _logger.exception("arv-mount %s: error", self.collection_locator)
+ except arvados.errors.ArgumentError as detail:
+ _logger.warning("arv-mount %s: error %s", self.collection_locator, detail)
+ if self.collection_object is not None and "manifest_text" in self.collection_object:
+ _logger.warning("arv-mount manifest_text is: %s", self.collection_object["manifest_text"])
+ except Exception:
+ _logger.exception("arv-mount %s: error", self.collection_locator)
+ if self.collection_object is not None and "manifest_text" in self.collection_object:
+ _logger.error("arv-mount manifest_text is: %s", self.collection_object["manifest_text"])
+ return False
+
+ def __getitem__(self, item):
+ self.checkupdate()
+ if item == '.arvados#collection':
+ if self.collection_object_file is None:
+ self.collection_object_file = ObjectFile(self.inode, self.collection_object)
+ self.inodes.add_entry(self.collection_object_file)
+ return self.collection_object_file
+ else:
+ return super(CollectionDirectory, self).__getitem__(item)
+
+ def __contains__(self, k):
+ if k == '.arvados#collection':
+ return True
+ else:
+ return super(CollectionDirectory, self).__contains__(k)
+
+
+class MagicDirectory(Directory):
+ """A special directory that logically contains the set of all extant keep locators.
+
+ When a file is referenced by lookup(), it is tested to see if it is a valid
+ keep locator to a manifest, and if so, loads the manifest contents as a
+ subdirectory of this directory with the locator as the directory name.
+ Since querying a list of all extant keep locators is impractical, only
+ collections that have already been accessed are visible to readdir().
+
+ """
+
+ README_TEXT = """
+This directory provides access to Arvados collections as subdirectories listed
+by uuid (in the form 'zzzzz-4zz18-1234567890abcde') or portable data hash (in
+the form '1234567890abcdefghijklmnopqrstuv+123').
+
+Note that this directory will appear empty until you attempt to access a
+specific collection subdirectory (such as trying to 'cd' into it), at which
+point the collection will actually be looked up on the server and the directory
+will appear if it exists.
+""".lstrip()
+
+ def __init__(self, parent_inode, inodes, api, num_retries):
+ super(MagicDirectory, self).__init__(parent_inode)
+ self.inodes = inodes
+ self.api = api
+ self.num_retries = num_retries
+
+ def __setattr__(self, name, value):
+ super(MagicDirectory, self).__setattr__(name, value)
+ # When we're assigned an inode, add a README.
+ if ((name == 'inode') and (self.inode is not None) and
+ (not self._entries)):
+ self._entries['README'] = self.inodes.add_entry(
+ StringFile(self.inode, self.README_TEXT, time.time()))
+ # If we're the root directory, add an identical by_id subdirectory.
+ if self.inode == llfuse.ROOT_INODE:
+ self._entries['by_id'] = self.inodes.add_entry(MagicDirectory(
+ self.inode, self.inodes, self.api, self.num_retries))
+
+ def __contains__(self, k):
+ if k in self._entries:
+ return True
+
+ if not portable_data_hash_pattern.match(k) and not uuid_pattern.match(k):
+ return False
+
+ try:
+ e = self.inodes.add_entry(CollectionDirectory(
+ self.inode, self.inodes, self.api, self.num_retries, k))
+ if e.update():
+ self._entries[k] = e
+ return True
+ else:
+ return False
+ except Exception as e:
+ _logger.debug('arv-mount exception keep %s', e)
+ return False
+
+ def __getitem__(self, item):
+ if item in self:
+ return self._entries[item]
+ else:
+ raise KeyError("No collection with id " + item)
+
+
+class RecursiveInvalidateDirectory(Directory):
+ def invalidate(self):
+ if self.inode == llfuse.ROOT_INODE:
+ llfuse.lock.acquire()
+ try:
+ super(RecursiveInvalidateDirectory, self).invalidate()
+ for a in self._entries:
+ self._entries[a].invalidate()
+ except Exception:
+ _logger.exception()
+ finally:
+ if self.inode == llfuse.ROOT_INODE:
+ llfuse.lock.release()
+
+
+class TagsDirectory(RecursiveInvalidateDirectory):
+ """A special directory that contains as subdirectories all tags visible to the user."""
+
+ def __init__(self, parent_inode, inodes, api, num_retries, poll_time=60):
+ super(TagsDirectory, self).__init__(parent_inode)
+ self.inodes = inodes
+ self.api = api
+ self.num_retries = num_retries
+ self._poll = True
+ self._poll_time = poll_time
+
+ def update(self):
+ with llfuse.lock_released:
+ tags = self.api.links().list(
+ filters=[['link_class', '=', 'tag']],
+ select=['name'], distinct=True
+ ).execute(num_retries=self.num_retries)
+ if "items" in tags:
+ self.merge(tags['items'],
+ lambda i: i['name'],
+ lambda a, i: a.tag == i['name'],
+ lambda i: TagDirectory(self.inode, self.inodes, self.api, self.num_retries, i['name'], poll=self._poll, poll_time=self._poll_time))
+
+
+class TagDirectory(Directory):
+ """A special directory that contains as subdirectories all collections visible
+ to the user that are tagged with a particular tag.
+ """
+
+ def __init__(self, parent_inode, inodes, api, num_retries, tag,
+ poll=False, poll_time=60):
+ super(TagDirectory, self).__init__(parent_inode)
+ self.inodes = inodes
+ self.api = api
+ self.num_retries = num_retries
+ self.tag = tag
+ self._poll = poll
+ self._poll_time = poll_time
+
+ def update(self):
+ with llfuse.lock_released:
+ taggedcollections = self.api.links().list(
+ filters=[['link_class', '=', 'tag'],
+ ['name', '=', self.tag],
+ ['head_uuid', 'is_a', 'arvados#collection']],
+ select=['head_uuid']
+ ).execute(num_retries=self.num_retries)
+ self.merge(taggedcollections['items'],
+ lambda i: i['head_uuid'],
+ lambda a, i: a.collection_locator == i['head_uuid'],
+ lambda i: CollectionDirectory(self.inode, self.inodes, self.api, self.num_retries, i['head_uuid']))
+
+
+class ProjectDirectory(Directory):
+ """A special directory that contains the contents of a project."""
+
+ def __init__(self, parent_inode, inodes, api, num_retries, project_object,
+ poll=False, poll_time=60):
+ super(ProjectDirectory, self).__init__(parent_inode)
+ self.inodes = inodes
+ self.api = api
+ self.num_retries = num_retries
+ self.project_object = project_object
+ self.project_object_file = None
+ self.uuid = project_object['uuid']
+ self._poll = poll
+ self._poll_time = poll_time
+
+ def createDirectory(self, i):
+ if collection_uuid_pattern.match(i['uuid']):
+ return CollectionDirectory(self.inode, self.inodes, self.api, self.num_retries, i)
+ elif group_uuid_pattern.match(i['uuid']):
+ return ProjectDirectory(self.inode, self.inodes, self.api, self.num_retries, i, self._poll, self._poll_time)
+ elif link_uuid_pattern.match(i['uuid']):
+ if i['head_kind'] == 'arvados#collection' or portable_data_hash_pattern.match(i['head_uuid']):
+ return CollectionDirectory(self.inode, self.inodes, self.api, self.num_retries, i['head_uuid'])
+ else:
+ return None
+ elif uuid_pattern.match(i['uuid']):
+ return ObjectFile(self.parent_inode, i)
+ else:
+ return None
+
+ def update(self):
+ if self.project_object_file == None:
+ self.project_object_file = ObjectFile(self.inode, self.project_object)
+ self.inodes.add_entry(self.project_object_file)
+
+ def namefn(i):
+ if 'name' in i:
+ if i['name'] is None or len(i['name']) == 0:
+ return None
+ elif collection_uuid_pattern.match(i['uuid']) or group_uuid_pattern.match(i['uuid']):
+ # collection or subproject
+ return i['name']
+ elif link_uuid_pattern.match(i['uuid']) and i['head_kind'] == 'arvados#collection':
+ # name link
+ return i['name']
+ elif 'kind' in i and i['kind'].startswith('arvados#'):
+ # something else
+ return "{}.{}".format(i['name'], i['kind'][8:])
+ else:
+ return None
+
+ def samefn(a, i):
+ if isinstance(a, CollectionDirectory):
+ return a.collection_locator == i['uuid']
+ elif isinstance(a, ProjectDirectory):
+ return a.uuid == i['uuid']
+ elif isinstance(a, ObjectFile):
+ return a.uuid == i['uuid'] and not a.stale()
+ return False
+
+ with llfuse.lock_released:
+ if group_uuid_pattern.match(self.uuid):
+ self.project_object = self.api.groups().get(
+ uuid=self.uuid).execute(num_retries=self.num_retries)
+ elif user_uuid_pattern.match(self.uuid):
+ self.project_object = self.api.users().get(
+ uuid=self.uuid).execute(num_retries=self.num_retries)
+
+ contents = arvados.util.list_all(self.api.groups().contents,
+ self.num_retries, uuid=self.uuid)
+ # Name links will be obsolete soon, take this out when there are no more pre-#3036 in use.
+ contents += arvados.util.list_all(
+ self.api.links().list, self.num_retries,
+ filters=[['tail_uuid', '=', self.uuid],
+ ['link_class', '=', 'name']])
+
+ # end with llfuse.lock_released, re-acquire lock
+
+ self.merge(contents,
+ namefn,
+ samefn,
+ self.createDirectory)
+
+ def __getitem__(self, item):
+ self.checkupdate()
+ if item == '.arvados#project':
+ return self.project_object_file
+ else:
+ return super(ProjectDirectory, self).__getitem__(item)
+
+ def __contains__(self, k):
+ if k == '.arvados#project':
+ return True
+ else:
+ return super(ProjectDirectory, self).__contains__(k)
+
+
+class SharedDirectory(Directory):
+ """A special directory that represents users or groups who have shared projects with me."""
+
+ def __init__(self, parent_inode, inodes, api, num_retries, exclude,
+ poll=False, poll_time=60):
+ super(SharedDirectory, self).__init__(parent_inode)
+ self.inodes = inodes
+ self.api = api
+ self.num_retries = num_retries
+ self.current_user = api.users().current().execute(num_retries=num_retries)
+ self._poll = True
+ self._poll_time = poll_time
+
+ def update(self):
+ with llfuse.lock_released:
+ all_projects = arvados.util.list_all(
+ self.api.groups().list, self.num_retries,
+ filters=[['group_class','=','project']])
+ objects = {}
+ for ob in all_projects:
+ objects[ob['uuid']] = ob
+
+ roots = []
+ root_owners = {}
+ for ob in all_projects:
+ if ob['owner_uuid'] != self.current_user['uuid'] and ob['owner_uuid'] not in objects:
+ roots.append(ob)
+ root_owners[ob['owner_uuid']] = True
+
+ lusers = arvados.util.list_all(
+ self.api.users().list, self.num_retries,
+ filters=[['uuid','in', list(root_owners)]])
+ lgroups = arvados.util.list_all(
+ self.api.groups().list, self.num_retries,
+ filters=[['uuid','in', list(root_owners)]])
+
+ users = {}
+ groups = {}
+
+ for l in lusers:
+ objects[l["uuid"]] = l
+ for l in lgroups:
+ objects[l["uuid"]] = l
+
+ contents = {}
+ for r in root_owners:
+ if r in objects:
+ obr = objects[r]
+ if "name" in obr:
+ contents[obr["name"]] = obr
+ if "first_name" in obr:
+ contents[u"{} {}".format(obr["first_name"], obr["last_name"])] = obr
+
+ for r in roots:
+ if r['owner_uuid'] not in objects:
+ contents[r['name']] = r
+
+ # end with llfuse.lock_released, re-acquire lock
+
+ try:
+ self.merge(contents.items(),
+ lambda i: i[0],
+ lambda a, i: a.uuid == i[1]['uuid'],
+ lambda i: ProjectDirectory(self.inode, self.inodes, self.api, self.num_retries, i[1], poll=self._poll, poll_time=self._poll_time))
+ except Exception:
+ _logger.exception()
projects / arvados.git / commitdiff