def writeFile(self, rFile):
self.curr_node = getCurrNode()
node = self.findSucc(rFile.meta.contentHash)
if node.port == self.node.port and node.ip == self.node.ip:
if not rFile in rfile_list:
temp = RFile()
tempMeta = RFileMetadata()
tempMeta.filename = rFile.meta.filename
tempMeta.version = 0
tempMeta.contentHash = rFile.meta.contentHash
temp.content = rFile.content
temp.meta = tempMeta
rfile_list.append(temp)
else:
for i in rfile_list:
if i.meta.filename == rFile.meta.filename:
ver = i.meta.version
rfile_list.remove(i)
break
temp = RFile()
tempMeta = RFileMetadata()
tempMeta.filename = rFile.meta.filename
tempMeta.version = ver + 1
tempMeta.contentHash = rFile.meta.contentHash
temp.content = rFile.content
temp.meta = tempMeta
rfile_list.append(temp)
else:
s = SystemException()
s.message = "Key not associated"
raise s
def main():
transport = TSocket.TSocket(sys.argv[1], int(sys.argv[2]))
transport = TTransport.TBufferedTransport(transport)
protocol = TBinaryProtocol.TBinaryProtocol(transport)
client = FileStore.Client(protocol)
transport.open()
wFile = RFile()
wFileMeta = RFileMetadata()
wFileMeta.filename = "sample.txt"
sha256file = hashlib.sha256(wFileMeta.filename.encode())
wFileMeta.contentHash = sha256file.hexdigest()
wFile.meta = wFileMeta
wFile.content = "what now?"
#print('dddddddddddddddd : ',sha256file.hexdigest() )
client.writeFile(wFile)
rFile = RFile()
rFile = client.readFile('aaa.txt')
print('sha256: ', rFile.meta.contentHash)
print('content: ', rFile.content)
nodeID = NodeID()
#nodeID = client.getNodeSucc()
#keey = '69c9b6900f19eeddc1c9c99928410ddf045adb877f565487546c9cf05c9e2fd2'
#nodeID = client.findPred(sha256file.hexdigest())
#print('node', nodeID)
transport.close()
def readFile(self, filename, owner):
logger.info("Request to Read file %s by owner %s" % (filename, owner))
self.curr_node = getCurrentNode()
node = self.findSucc(sha256(owner + ":" + filename).hexdigest())
if node.port == self.node.port and node.ip == self.node.ip:
if os.path.isfile(os.getcwd() + "/" + filename):
with open(filename, 'r') as f:
data = f.readlines()
if str(owner) == str(data[2].strip().split('=')[1]):
rf_metadata = RFileMetadata()
rf_metadata.filename = data[0].strip().split('=')[1]
rf_metadata.version = int(
data[1].strip().split('=')[1])
rf_metadata.owner = data[2].strip().split('=')[1]
rf_metadata.contentHash = data[3].strip().split('=')[1]
r_file = RFile()
r_file.meta = rf_metadata
r_file.content = data[4].strip().split('=')[1]
return r_file
else:
logger.error(
"File %s does not exist for the given owner %s" %
(filename, owner))
raise system_exception(
"File does not exist with the given owner name")
else:
logger.error("No file exist with the name %s" % filename)
raise system_exception("No file exist with the name%s" %
filename)
else:
logger.error("Key is not associated with the node")
raise system_exception("Key is not associated with the node")
def incorrectOwnerTest(host, port_list):
if len(port_list) < 2:
return
# Make socket
transport = TSocket.TSocket(host, port_list[0])
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
meta_obj = RFileMetadata()
meta_obj.filename = "book.txt"
meta_obj.version = 0
meta_obj.owner = "Brad"
meta_obj.contentHash = \
hashlib.sha256(("%s:%s" % (meta_obj.filename,\
meta_obj.owner)).encode("utf-8")).hexdigest()
content_str = "Test String"
file_obj = RFile()
file_obj.meta = meta_obj
file_obj.content = content_str
client.writeFile(file_obj)
transport.close()
# Make socket
transport = TSocket.TSocket(host, port_list[1])
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
try:
res = client.readFile("book.txt", "Drake")
except SystemException:
print("Success: Incorrect owner")
transport.close()
def testReadAfterWriteError():
# Make socket
transport = TSocket.TSocket('alpha.cs.binghamton.edu', 9000)
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
meta_obj = RFileMetadata()
meta_obj.filename = "book.txt"
meta_obj.version = 0
meta_obj.owner = "Brad"
meta_obj.contentHash = hashlib.sha256(meta_obj.filename +\
":" + meta_obj.owner).hexdigest()
content_str = "Knowledge Bitch!"
file_obj = RFile()
file_obj.meta = meta_obj
file_obj.content = content_str
client.writeFile(file_obj)
transport.close()
# Make socket
transport = TSocket.TSocket('alpha.cs.binghamton.edu', 9001)
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
try:
res = client.readFile("book.txt", "Brad")
print "Read after write error NOT succesful"
except SystemException:
print "Read after write error successful"
transport.close()
def incorrectOwnerTest():
# Make socket
transport = TSocket.TSocket('alpha.cs.binghamton.edu', 9000)
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
meta_obj = RFileMetadata()
meta_obj.filename = "book.txt"
meta_obj.version = 0
meta_obj.owner = "Brad"
meta_obj.contentHash = hashlib.sha256(meta_obj.filename +\
":" + meta_obj.owner).hexdigest()
content_str = "Test String"
file_obj = RFile()
file_obj.meta = meta_obj
file_obj.content = content_str
client.writeFile(file_obj)
transport.close()
# Make socket
transport = TSocket.TSocket('alpha.cs.binghamton.edu', 9000)
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
try:
res = client.readFile("book.txt", "Drake")
except SystemException:
print "Success: Incorrect owner"
transport.close()
def readFile(self, filename, owner):
key = hashlib.sha256(owner + ":" + filename).hexdigest()
node = self.findSucc(key)
if not node.id == self.NodeID:
raise SystemException("Write File Error - Server does not own fil`s id")
found = False
for my_file in self.files:
if filename == my_file.meta.filename and owner == my_file.meta.owner:
found = True
f = RFile()
m = RFileMetadata()
m.filename = filename
m.version = my_file.meta.version
m.owner = owner
m.contentHash = my_file.meta.contentHash
f.meta = m
f.content = my_file.content
return f
if not found:
raise SystemException("Read File Error - File not found")
def readFile(self, fileC):
ipAddress = socket.gethostbyname(socket.gethostname())
file = ipAddress + ':' + str(port)
sha256key = hashlib.sha256(file.encode())
sHash = sha256key.hexdigest()
sha256val = hashlib.sha256(fileC.encode())
contentHash = sha256val.hexdigest()
checkNode = NodeID()
checkNode = self.findSucc(contentHash)
if self.sha256ID == checkNode.id:
if sHash in self.log:
#sha256val = hashlib.sha256(fileC.encode())
#sHashfile = sha256val.hexdigest()
sFile = RFile()
sFileMeta = RFileMetadata()
sFileMeta.filename = fileC
sFileMeta.version = self.version
sFileMeta.contentHash = contentHash
file = open(fileC, "r")
sFile.content = file.read()
print(sFile.content)
sFile.meta = sFileMeta
else:
x = SystemException()
x.message = "File Is not Present in server"
raise x
return sFile
else:
z = SystemException()
z.message = "server is not the file’s successor"
raise z
def writeFile(self, rFile):
key = hashlib.sha256(rFile.meta.owner + ":" + rFile.meta.filename).hexdigest()
node = self.findSucc(key)
if not node.id == self.NodeID:
raise SystemException("Write File Error - Server does not own fil`s id")
new_file = True
for my_file in self.files:
if rFile.meta.filename == my_file.meta.filename:
my_file.meta.version += 1
my_file.meta.owner = rFile.meta.owner
my_file.meta.contentHash = hashlib.sha256(rFile.meta.contentHash).hexdigest()
my_file.content = rFile.content
new_file = False
if new_file:
f = RFile()
m = RFileMetadata()
m.filename = rFile.meta.filename
m.version = 0
m.owner = rFile.meta.owner
m.contentHash = hashlib.sha256(rFile.meta.contentHash).hexdigest()
f.meta = m
f.content = rFile.content
self.files.append(f)
def readFile(self, filenameIn):
rFile = RFile()
try:
hash_object = hashlib.sha256(filenameIn.encode()).hexdigest()
# Find the successor of file
fileServerNode = self.findSucc(hash_object)
# If successor of file is not same server to which client has requested file - SystemException is thrown
if (fileServerNode.id != self.serverNode.id):
systemException = SystemException()
systemException.message = ("File not owned by Server " +
self.serverNode.ip + ":" +
str(self.serverNode.port) + "\n")
raise systemException
# If successor of file is same server to which client has requested file - Request served
rFileMetadata = RFileMetadata()
if (self.file_info.get(hash_object) != None):
rFileMetadata.filename = filenameIn
rFileMetadata.version = self.file_info.get(hash_object)[1] + 1
rFileMetadata.contentHash = self.file_info.get(hash_object)[3]
rFile.meta = rFileMetadata
rFile.content = self.file_info.get(hash_object)[2]
else:
systemException = SystemException()
systemException.message = ("\nFile " + filenameIn +
" Not Found")
raise systemException
except IOError as e:
systemException = SystemException()
systemException.message = "IO Exception in read file"
raise systemException
return rFile
def readFile(self, filename):
key = sha_256(filename)
node = self.findSucc(key)
if node != self.currentNode:
raise SystemException("ReadFile, file does not exist")
exists = False
index = 0
for x in range(0, len(self.files)):
if self.files[x].meta.filename == filename:
exists = True
index = x
temp = self.files[index]
rFile1 = RFile()
if exists:
print("exist")
meta = RFileMetadata()
meta.filename = filename
meta.version = temp.meta.version
meta.contentHash = temp.meta.contentHash
rFile1.meta = meta
rFile1.content = temp.content
return rFile1
raise SystemException("ReadFile, file not found")
assert err.message == "Fingertable not exist for the current node", "Test_Find_Pred - message content mismatch"
print "Test case passed 16 -- ", err.message
try:
filestore.getNodeSucc()
raise AssertionError(
"Test_Get_Node_Succ - No Exception on empty finger table")
except SystemException as err:
assert err.message == "Fingertable not exist for the current node", "Test_Node_Succ - message content mismatch"
print "Test case passed 17 -- ", err.message
if __name__ == '__main__':
rf_metadata = RFileMetadata()
rf_metadata.filename = "file_name"
rf_metadata.version = 0
rf_metadata.owner = "owner_name"
rf_metadata.contentHash = sha256(rf_metadata.owner + ":" +
rf_metadata.filename).hexdigest()
rfile = RFile()
rfile.meta = rf_metadata
rfile.content = "This is my first apache thrift programming experience"
try:
t = TestChord()
t.test_write_file(rfile)
t.test_read_file(rf_metadata.filename, rf_metadata.owner)
#t.test_negative_cases(make_socket('128.226.180.166', 9095), rfile.meta.contentHash)
except Thrift.TException as tx:
print('%s' % tx.message)
def writeFile(self, inputF):
#print('--------------------------------------------------')
ipAddress = socket.gethostbyname(socket.gethostname())
self.file = ipAddress + ':' + str(port)
sha256file = hashlib.sha256(self.file.encode())
self.sha256ID = sha256file.hexdigest()
#print ('IP and port ', file)
filename = inputF.meta.filename
contentHash = inputF.meta.contentHash
checkNode = NodeID()
checkNode = self.findSucc(contentHash)
#print('checknode id:', checkNode.id, 'self: ',self.sha256ID)
if self.sha256ID == checkNode.id:
if self.sha256ID in self.log:
#x = self.log[self.sha256ID].meta.version
#self.log[self.sha256ID].meta.version = x+1
#self.log[self.sha256ID].content = inputF.content
#x = RFile()
#x1 = RFileMetadata()
#x1 = self.log[self.sha256ID].meta
#x1.version = x1.version + 1
#self.log[self.sha256ID].meta = x1
self.version = self.version + 1
self.content = inputF.content
#x = self.log[self.sha256ID]
#x.meta = RFileMetadata()
#x.meta.version = x.meta.version + 1
#x1 = x.meta
#x1.version = x.meta.version + 1
#x.RFileMetadata = x1
#x.meta.version = x.meta.version+1
#x.content = inputF.content
#self.log[self.sha256ID] = x
#self.log[sha256ID].meta.version = x+1
#self.log[sha256ID].content = inputF.content
#x = serverFile.meta.version
#serverFile.meta.version = x+1
#serverFile.meta.contentHash = inputF.meta.contentHash
#serverFile.content = inputF.content
file = open(inputF.meta.filename, "w+")
file.write(inputF.content)
else:
serverFile = RFile()
sMeta = RFileMetadata()
file = open(filename, "w+")
file.write(inputF.content)
sMeta.filename = filename
sMeta.version = 0
self.version = sMeta.version
sMeta.contentHash = contentHash
serverFile.content = inputF.content
self.content = serverFile.content
serverFile.RFileMetadata = sMeta
self.log[self.sha256ID] = serverFile
file.close()
else:
y = SystemException()
y.message = "Rserver is not the file’s successor"
raise y
def testOverwrite(host, port_list):
rand_idx = random.randint(0, len(port_list)-1)
rand_port = port_list[rand_idx]
# Make socket
transport = TSocket.TSocket(host, rand_port)
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
meta_obj = RFileMetadata()
meta_obj.filename = "book.txt"
meta_obj.version = 0
meta_obj.owner = "Brad"
meta_obj.contentHash = \
hashlib.sha256(("%s:%s" % (meta_obj.filename,\
meta_obj.owner)).encode("utf-8")).hexdigest()
content_str = "Test String"
file_obj = RFile()
file_obj.meta = meta_obj
file_obj.content = content_str
succ = client.findSucc(file_obj.meta.contentHash)
transport.close()
# Make socket
transport = TSocket.TSocket(host, succ.port)
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
client.writeFile(file_obj)
# Make socket
transport = TSocket.TSocket(host, succ.port)
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
file_obj.meta.version = file_obj.meta.version + 1
file_obj.content = "New Test String"
client.writeFile(file_obj)
try:
rand_idx = random.randint(0, len(port_list)-1)
rand_port = port_list[rand_idx]
# Make socket
transport = TSocket.TSocket(host, rand_port)
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
res = client.readFile("book.txt", "Brad")
assert res.content == "New Test String"
assert res.meta.version == 1
print("File Overwrite Successful")
except SystemException:
print("Success: Incorrect owner")
transport.close()
def testReadAfterWriteError(host, port_list):
rand_idx = random.randint(0, len(port_list)-1)
rand_port = port_list[rand_idx]
# Make socket
transport = TSocket.TSocket(host, rand_port)
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
meta_obj = RFileMetadata()
meta_obj.filename = "book.txt"
meta_obj.version = 0
meta_obj.owner = "Brad"
meta_obj.contentHash = \
hashlib.sha256(("%s:%s" % (meta_obj.filename,\
meta_obj.owner)).encode("utf-8")).hexdigest()
content_str = "Knowledge Bitch!"
file_obj = RFile()
file_obj.meta = meta_obj
file_obj.content = content_str
succ = client.findSucc(file_obj.meta.contentHash)
transport.close()
# Make socket
transport = TSocket.TSocket(host, succ.port)
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
client.writeFile(file_obj)
transport.close()
other_port = [port for port in port_list if port != succ.port][0]
# Make socket
transport = TSocket.TSocket(host, other_port)
# Buffering is critical. Raw sockets are very slow
transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
protocol = TBinaryProtocol.TBinaryProtocol(transport)
# Create a client to use the protocol encoder
client = FileStore.Client(protocol)
# Connect!
transport.open()
try:
res = client.readFile("book.txt", "Brad")
print("Read after write error NOT succesful")
except SystemException:
print("Read after write error successful")
transport.close()
