# FUSE driver for Arvados Keep
#
+from __future__ import print_function
import os
import sys
from time import time
from llfuse import FUSEError
+DEBUG = False
+
class FreshBase(object):
'''Base class for maintaining fresh/stale state to determine when to update.'''
def __init__(self):
try:
self.update()
except apiclient.errors.HttpError as e:
- print e
+ if DEBUG:
+ print(e, file=sys.stderr)
def __getitem__(self, item):
self.checkupdate()
for k, v in s.files().items():
cwd._entries[k] = self.inodes.add_entry(StreamReaderFile(cwd.inode, v))
self.fresh()
+ return True
except Exception as detail:
- print("%s: error: %s" % (self.collection_locator,detail) )
+ if DEBUG:
+ print("arv-mount %s: error: %s" % (self.collection_locator,detail), file=sys.stderr)
+ return False
class MagicDirectory(Directory):
'''A special directory that logically contains the set of all extant keep
if k in self._entries:
return True
try:
- if arvados.Keep.get(k):
+ e = self.inodes.add_entry(CollectionDirectory(self.inode, self.inodes, k))
+ if e.update():
+ self._entries[k] = e
return True
else:
return False
except Exception as e:
- #print 'exception keep', e
+ if DEBUG:
+ print('arv-mount exception keep', e, file=sys.stderr)
return False
def __getitem__(self, item):
- if item not in self._entries:
- self._entries[item] = self.inodes.add_entry(CollectionDirectory(self.inode, self.inodes, item))
- return self._entries[item]
-
+ if self.__contains__(item):
+ return self._entries[item]
+ else:
+ raise KeyError()
class TagsDirectory(Directory):
'''A special directory that contains as subdirectories all tags visible to the user.'''
so request handlers do not run concurrently unless the lock is explicitly released
with llfuse.lock_released.'''
- def __init__(self, uid, gid):
+ def __init__(self, uid, gid, debug):
super(Operations, self).__init__()
+ if debug:
+ global DEBUG
+ DEBUG = True
+ print("arv-mount debug enabled", file=sys.stderr)
+
self.inodes = Inodes()
self.uid = uid
self.gid = gid
return entry
def lookup(self, parent_inode, name):
- #print "lookup: parent_inode", parent_inode, "name", name
+ if DEBUG:
+ print("arv-mount lookup: parent_inode", parent_inode, "name", name, file=sys.stderr)
inode = None
if name == '.':
return fh
def read(self, fh, off, size):
- #print "read", fh, off, size
+ if DEBUG:
+ print("arv-mount read", fh, off, size, file=sys.stderr)
if fh in self._filehandles:
handle = self._filehandles[fh]
else:
del self._filehandles[fh]
def opendir(self, inode):
- #print "opendir: inode", inode
+ if DEBUG:
+ print("arv-mount opendir: inode", inode, file=sys.stderr)
if inode in self.inodes:
p = self.inodes[inode]
return fh
def readdir(self, fh, off):
- #print "readdir: fh", fh, "off", off
+ if DEBUG:
+ print("arv-mount readdir: fh", fh, "off", off, file=sys.stderr)
if fh in self._filehandles:
handle = self._filehandles[fh]
else:
raise llfuse.FUSEError(errno.EBADF)
- #print "handle.entry", handle.entry
+ if DEBUG:
+ print("arv-mount handle.entry", handle.entry, file=sys.stderr)
e = off
while e < len(handle.entry):