def getxattr(self, path, name, position=0):
if path not in self.files:
print("GETXATTR in other location")
packet = packets.new_packet(
OP_FIND) # ask bootstrap - find location of file
packet['path'] = path
print('Sending OP_FIND for GETXATTR', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_R for GETXATTR', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_GETXATTR)
packet['path'] = path
packet['name'] = name
print('Sending OP_GETXATTR', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(
tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_GETXATTR_R', reply)
if reply['getxattr']:
return reply['getxattr']
else:
attrs = self.files[path].get('attrs', {})
try:
return attrs[name]
except KeyError:
return '' # Should return ENOATTR
def rename(self, old, new):
print("In Rename")
brename = packets.new_packet(OP_RENAME)
brename['old'] = old
brename['new'] = new
if old not in self.files:
packet = packets.new_packet(OP_FIND) # ask bootstrap - find location of file
packet['path'] = old
print('Sending OP_FIND for RENAME', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_R for RENAME', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_RENAME)
packet['old'] = old
packet['new'] = new
print('Sending OP_RENAME', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_RENAME_R', reply)
else:
self.data[new] = self.data[old]
del self.data[old]
self.files[new] = self.files.pop(old)
boot_sock = socks.tcp_sock()
boot_sock.connect(self.bootstrap)
boot_sock.send(packets.build(brename))
def getattr(self, path, fh=None):
print("memory.py getattr called")
if path not in self.files:
packet = packets.new_packet(OP_FIND) # ask bootstrap - find location of file
packet['path'] = path
print('Sending OP_FIND for getattr', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_Rfor getattr', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_GETATTR)
packet['path'] = path
print('Sending OP_GETATTR', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_GETATTR_R', reply)
if reply['getattr']:
return reply['getattr']
else: raise FuseOSError(ENOENT)
return self.files[path]
def unlink(self, path):
print("In Unlink")
brename = packets.new_packet(OP_DELETE)
brename['path'] = path
if path not in self.files:
print("In other location")
packet = packets.new_packet(OP_FIND) # ask bootstrap - find location of file
packet['path'] = path
print('Sending OP_FIND for DELETE', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_R for DELETE', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_DELETE)
packet['path'] = path
print('Sending OP_DELETE', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_DELETE_R', reply)
else:
print("In self")
del self.data[path]
self.files.pop(path)
boot_sock = socks.tcp_sock()
boot_sock.connect(self.bootstrap)
boot_sock.send(packets.build(brename))
def getattr(self, path, fh=None):
print("memory.py getattr called")
if path not in self.files:
packet = packets.new_packet(
OP_FIND) # ask bootstrap - find location of file
packet['path'] = path
print('Sending OP_FIND for getattr', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_Rfor getattr', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_GETATTR)
packet['path'] = path
print('Sending OP_GETATTR', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(
tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_GETATTR_R', reply)
if reply['getattr']:
return reply['getattr']
else:
raise FuseOSError(ENOENT)
return self.files[path]
def getxattr(self, path, name, position=0):
if path not in self.files:
print("GETXATTR in other location")
packet = packets.new_packet(OP_FIND) # ask bootstrap - find location of file
packet['path'] = path
print('Sending OP_FIND for GETXATTR', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_R for GETXATTR', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_GETXATTR)
packet['path'] = path
packet['name'] = name
print('Sending OP_GETXATTR', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_GETXATTR_R', reply)
if reply['getxattr']:
return reply['getxattr']
else:
attrs = self.files[path].get('attrs', {})
try:
return attrs[name]
except KeyError:
return '' # Should return ENOATTR
def truncate(self, path, length, fh=None):
if path not in self.files:
print("Truncate in other location")
packet = packets.new_packet(OP_FIND) # ask bootstrap - find location of file
packet['path'] = path
print('Sending OP_FIND for TRUNCATE', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_R for TRUNCATE', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_TRUNC)
packet['path'] = path
packet['length'] = length
print('Sending OP_TRUNCATE', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_TRUNCATE_R', reply)
else:
# make sure extending the file fills in zero bytes
self.data[path] = self.data[path][:length].ljust(
length, b'\x00'.decode())
self.files[path]['st_size'] = length
def unlink(self, path):
print("In Unlink")
brename = packets.new_packet(OP_DELETE)
brename['path'] = path
if path not in self.files:
print("In other location")
packet = packets.new_packet(
OP_FIND) # ask bootstrap - find location of file
packet['path'] = path
print('Sending OP_FIND for DELETE', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_R for DELETE', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_DELETE)
packet['path'] = path
print('Sending OP_DELETE', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(
tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_DELETE_R', reply)
else:
print("In self")
del self.data[path]
self.files.pop(path)
boot_sock = socks.tcp_sock()
boot_sock.connect(self.bootstrap)
boot_sock.send(packets.build(brename))
def truncate(self, path, length, fh=None):
if path not in self.files:
print("Truncate in other location")
packet = packets.new_packet(
OP_FIND) # ask bootstrap - find location of file
packet['path'] = path
print('Sending OP_FIND for TRUNCATE', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_R for TRUNCATE', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_TRUNC)
packet['path'] = path
packet['length'] = length
print('Sending OP_TRUNCATE', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(
tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_TRUNCATE_R', reply)
else:
# make sure extending the file fills in zero bytes
self.data[path] = self.data[path][:length].ljust(
length, b'\x00'.decode())
self.files[path]['st_size'] = length
def rename(self, old, new):
print("In Rename")
brename = packets.new_packet(OP_RENAME)
brename['old'] = old
brename['new'] = new
if old not in self.files:
packet = packets.new_packet(
OP_FIND) # ask bootstrap - find location of file
packet['path'] = old
print('Sending OP_FIND for RENAME', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_R for RENAME', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_RENAME)
packet['old'] = old
packet['new'] = new
print('Sending OP_RENAME', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(
tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_RENAME_R', reply)
else:
self.data[new] = self.data[old]
del self.data[old]
self.files[new] = self.files.pop(old)
boot_sock = socks.tcp_sock()
boot_sock.connect(self.bootstrap)
boot_sock.send(packets.build(brename))
def write(self, path, data, offset, fh):
#THIS IS WHERE WRITE HAPPENS
print("WRITE in Memory")
if path not in self.files:
print('remote write')
packet = packets.new_packet(
OP_FIND) # ask bootstrap - find location of file
packet['path'] = path
print('Sending OP_FIND for WRITE', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_R for WRITE', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_WRITE)
packet['path'] = path
packet['data'] = data.decode()
packet['offset'] = offset
packet['fh'] = fh
print('Sending OP_WRITE', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(
tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_WRITE_R', reply)
if 'datalen' in reply:
return reply['datalen']
else:
raise FuseOSError(ENOENT)
print("local write")
print("current contents:", self.data[path])
print("offset", offset)
print("fh", fh)
self.data[path] = self.data[path][:offset].ljust(
offset, b'\x00'.decode())
self.data[path] += data.decode()
self.data[path] += self.data[path][offset + len(data):]
# self.data[path] = (
# # make sure the data gets inserted at the right offset
# self.data[path][:offset].ljust(offset, '\x00'.encode('ascii'))
# + data.decode()
# # and only overwrites the bytes that data is replacing
# + self.data[path][offset + len(data):])
self.files[path]['st_size'] = len(self.data[path])
print("current contents:", self.data[path])
return len(data)
def write(self, path, data, offset, fh):
#THIS IS WHERE WRITE HAPPENS
print("WRITE in Memory")
if path not in self.files:
print('remote write')
packet = packets.new_packet(OP_FIND) # ask bootstrap - find location of file
packet['path'] = path
print('Sending OP_FIND for WRITE', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_R for WRITE', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_WRITE)
packet['path'] = path
packet['data'] = data.decode()
packet['offset'] = offset
packet['fh'] = fh
print('Sending OP_WRITE', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_WRITE_R', reply)
if 'datalen' in reply:
return reply['datalen']
else: raise FuseOSError(ENOENT)
print("local write")
print("current contents:", self.data[path])
print("offset", offset)
print("fh", fh)
self.data[path] = self.data[path][:offset].ljust(offset, b'\x00'.decode())
self.data[path] += data.decode()
self.data[path] += self.data[path][offset + len(data):]
# self.data[path] = (
# # make sure the data gets inserted at the right offset
# self.data[path][:offset].ljust(offset, '\x00'.encode('ascii'))
# + data.decode()
# # and only overwrites the bytes that data is replacing
# + self.data[path][offset + len(data):])
self.files[path]['st_size'] = len(self.data[path])
print("current contents:", self.data[path])
return len(data)
def readdir(self, path, fh):
#This is where LS happens
#return ['.', '..'] + [x[1:] for x in self.files if x != '/']
packet = packets.new_packet(OP_LS)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
ls = packets.unpack(sock.recv(MAX_READ))
print('ls contents', ls['ls'])
return ['.', '..'] + [x[1:] for x in ls['ls']]
def leave():
global listen_sock
temp_sock = socks.tcp_sock()
temp_sock.connect((bootstrap_ip,args.port))
print('connected to bootstrap for exit', temp_sock)
packet = packets.leave_packet(listen_sock.getsockname())
print('sending leave notice', packet)
temp_sock.send(packets.build(packet))
#TODO: recv ack?
temp_sock.close()
def readdir(self, path, fh):
#This is where LS happens
#return ['.', '..'] + [x[1:] for x in self.files if x != '/']
packet = packets.new_packet(OP_LS)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
ls = packets.unpack(sock.recv(MAX_READ))
print('ls contents', ls['ls'])
return ['.', '..'] + [x[1:] for x in ls['ls']]
def read(self, path, size, offset, fh):
print("memory.py read called")
if path not in self.files:
packet = packets.new_packet(
OP_FIND) # ask bootstrap - find location of file
packet['path'] = path
print('Sending OP_FIND for READ', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_R for READ', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_READ)
packet['path'] = path
packet['size'] = size
packet['offset'] = offset
packet['fh'] = fh
print('Sending OP_READ', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(
tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_READ_R', reply)
if 'read' in reply:
return reply['read'].encode('utf-8')
else:
raise FuseOSError(ENOENT)
print("offset: ", offset)
print("size: ", size)
print("read contents:", self.data[path])
datalen = len(self.data[path])
print("datalen", datalen)
end = datalen
if datalen > size:
end = size
return self.data[path][offset:offset + end].encode('utf-8')
def sigint_handler(signal,frame):
for n in nodes:
print(tuple(n))
tcp_sock = socks.tcp_sock()
try:
tcp_sock.connect(tuple(n))
except:
continue
msg = packets.new_packet(OP_LEAVE)
tcp_sock.send(packets.build(msg))
tcp_sock.close()
print("Goodbye~!")
sys.exit(0)
def sigint_handler(signal, frame):
for n in nodes:
print(tuple(n))
tcp_sock = socks.tcp_sock()
try:
tcp_sock.connect(tuple(n))
except:
continue
msg = packets.new_packet(OP_LEAVE)
tcp_sock.send(packets.build(msg))
tcp_sock.close()
print("Goodbye~!")
sys.exit(0)
def read(self, path, size, offset, fh):
print("memory.py read called")
if path not in self.files:
packet = packets.new_packet(OP_FIND) # ask bootstrap - find location of file
packet['path'] = path
print('Sending OP_FIND for READ', packet)
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
sock.send(packets.build(packet))
reply = packets.unpack(sock.recv(MAX_READ))
print('Received OP_FIND_R for READ', reply)
if 'loc' not in reply:
raise FuseOSError(ENOENT)
loc = tuple(reply['loc'])
tcp_sock = socks.tcp_sock()
tcp_sock.connect(loc) # connect to other node
packet = packets.new_packet(OP_READ)
packet['path'] = path
packet['size'] = size
packet['offset'] = offset
packet['fh'] = fh
print('Sending OP_READ', packet)
tcp_sock.send(packets.build(packet)) # send syscall
reply = packets.unpack(tcp_sock.recv(MAX_READ)) # TODO: listen for reply in select
print('Received OP_READ_R', reply)
if 'read' in reply:
return reply['read'].encode('utf-8')
else: raise FuseOSError(ENOENT)
print("offset: ", offset)
print("size: ", size)
print("read contents:",self.data[path])
datalen = len(self.data[path])
print("datalen", datalen)
end = datalen
if datalen > size:
end = size
return self.data[path][offset:offset + end].encode('utf-8')
def join():
global listen_sock
listen_sock = socks.listen_sock()
listen_sock.setblocking(False)
temp_sock = socks.tcp_sock() # only a temp sock is required to join network
try:
temp_sock.connect((bootstrap_ip, args.port))
except:
print("Could not connect to " + str(bootstrap_ip) + " on port " + str(args.port))
sys.exit(0)
print('connected to bootstrap', temp_sock)
packet = packets.join_packet((socket.gethostbyname(socket.gethostname()),listen_sock.getsockname()[1]))
print('Sending join request', packet)
temp_sock.send(packets.build(packet))
#TODO: recv ack?
temp_sock.close()
def create(self, path, mode):
self.files[path] = dict(st_mode=(S_IFREG | mode),
st_nlink=1,
st_size=0,
st_ctime=time(),
st_mtime=time(),
st_atime=time())
self.data[path] = ""
packet = packets.new_packet(OP_CREATE)
packet['path'] = path
packet['loc'] = self.node
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
print('Connected to bootstrap', sock)
print('Sending packet', packet)
print('Built packet', packets.build(packet))
sock.send(packets.build(packet)) # send new file to bootstrap
sock.close()
# should we wait for ack here?
self.fd += 1
return self.fd
def create(self, path, mode):
self.files[path] = dict(
st_mode=(S_IFREG | mode),
st_nlink=1,
st_size=0,
st_ctime=time(),
st_mtime=time(),
st_atime=time())
self.data[path] = ""
packet = packets.new_packet(OP_CREATE)
packet['path'] = path
packet['loc'] = self.node
sock = socks.tcp_sock()
sock.connect(self.bootstrap)
print('Connected to bootstrap', sock)
print('Sending packet', packet)
print('Built packet', packets.build(packet))
sock.send(packets.build(packet)) # send new file to bootstrap
sock.close()
# should we wait for ack here?
self.fd += 1
return self.fd
