def test_number():
assert Component.from_segment(13) == b'!\x01\r'
assert Component.from_byte_offset(13) == b'\x22\x01\r'
assert Component.from_sequence_num(13) == b'%\x01\r'
assert Component.from_version(13) == b'#\x01\r'
timeval = 15686790223318112
comp = Component.from_timestamp(timeval)
assert Component.get_type(comp) == 36
assert Component.get_value(comp) == b'\x00\x37\xbb\x0d\x76\xed\x4c\x60'
assert Component.to_number(comp) == timeval
def test_meta_info():
name = '/local/ndn/prefix/37=%00'
meta_info = MetaInfo()
meta_info.content_type = ContentType.BLOB
meta_info.freshness_period = 1000
meta_info.final_block_id = Component.from_sequence_num(2)
data = make_data(name, meta_info, signer=DigestSha256Signer())
assert (data ==
b"\x06\x4e\x07\x17\x08\x05local\x08\x03ndn\x08\x06prefix\x25\x01\x00"
b"\x14\x0c\x18\x01\x00\x19\x02\x03\xe8\x1a\x03\x25\x01\x02"
b"\x16\x03\x1b\x01\x00"
b"\x17 \x03\xb8,\x18\xffMw\x84\x86\xa5a\x94e\xcc\xdaQ\x15\xb7\xfb\x19\xab\x9d1lw\'\xdf\xac\x03#\xcad")
def test_meta_info():
name = '/local/ndn/prefix/37=%00'
meta_info = MetaInfo()
meta_info.content_type = ContentType.BLOB
meta_info.freshness_period = 1000
meta_info.final_block_id = Component.from_sequence_num(2)
data = make_data(name, meta_info, signer=DigestSha256Signer())
assert (
data ==
b"\x06\x4e\x07\x17\x08\x05local\x08\x03ndn\x08\x06prefix\x25\x01\x00"
b"\x14\x0c\x18\x01\x00\x19\x02\x03\xe8\x1a\x03\x3a\x01\x02"
b"\x16\x03\x1b\x01\x00"
b"\x17 \x0f^\xa1\x0c\xa7\xf5Fb\xf0\x9cOT\xe0FeC\x8f92\x04\x9d\xabP\x80o\'\x94\xaa={hQ"
)
def test_number():
assert Component.from_segment(13) == b'!\x01\r'
assert Component.from_byte_offset(13) == b'\x22\x01\r'
assert Component.from_sequence_num(13) == b'%\x01\r'
assert Component.from_version(13) == b'#\x01\r'
timeval = 15686790223318112
comp = Component.from_timestamp(timeval)
assert Component.get_type(comp) == 36
assert Component.get_value(comp) == b'\x00\x37\xbb\x0d\x76\xed\x4c\x60'
assert Component.to_number(comp) == timeval
assert Component.to_str(Component.from_segment(13)) == 'seg=13'
assert Component.to_str(Component.from_byte_offset(13)) == 'off=13'
assert Component.to_str(Component.from_sequence_num(13)) == 'seq=13'
assert Component.to_str(Component.from_version(13)) == 'v=13'
assert Component.to_str(
Component.from_timestamp(timeval)) == 't=15686790223318112'
assert Component.from_str('seg=13') == b'!\x01\r'
assert Component.from_str('off=13') == b'\x22\x01\r'
assert Component.from_str('seq=13') == b'%\x01\r'
assert Component.from_str('v=13') == b'#\x01\r'
assert Component.from_str(
't=15686790223318112') == b'$\x08\x007\xbb\rv\xedL`'
def test_meta_info():
data = (b"\x06\x4e\x07\x17\x08\x05local\x08\x03ndn\x08\x06prefix\x25\x01\x00"
b"\x14\x0c\x18\x01\x00\x19\x02\x03\xe8\x1a\x03\x25\x01\x02"
b"\x16\x03\x1b\x01\x00"
b"\x17 \x03\xb8,\x18\xffMw\x84\x86\xa5a\x94e\xcc\xdaQ\x15\xb7\xfb\x19\xab\x9d1lw\'\xdf\xac\x03#\xcad")
name, meta_info, content, sig = parse_data(data)
assert name == Name.from_str("/local/ndn/prefix/37=%00")
assert meta_info.content_type == ContentType.BLOB
assert meta_info.freshness_period == 1000
assert meta_info.final_block_id == Component.from_sequence_num(2)
assert sig.signature_info.signature_type == SignatureType.DIGEST_SHA256
assert content is None
algo = hashlib.sha256()
for part in sig.signature_covered_part:
algo.update(part)
assert sig.signature_value_buf == algo.digest()
async def face_event(self):
last_seq = -1
name_prefix = Name.from_str('/localhost/nfd/faces/events')
while True:
if last_seq >= 0:
name = name_prefix + [
Component.from_sequence_num(last_seq + 1)
]
init = False
else:
name = name_prefix
init = True
logging.info("Face event notification stream %s",
Name.to_str(name))
try:
data_name, _, content = await self.app.express_interest(
name,
must_be_fresh=init,
can_be_prefix=init,
lifetime=60000)
last_seq = Component.to_number(data_name[-1])
timestamp = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
if not content:
print('ERROR: Face event is empty')
elif content[0] == 0x65:
msg = parse_response(content)
print('Query failed with response', msg['status_code'],
msg['status_text'])
else:
dic = self.face_event_to_dict(content)
dic['seq'] = str(last_seq)
dic['time'] = timestamp
await self.emit('face event', dic)
self.event_list.append(dic)
except (InterestCanceled, NetworkError):
break
except InterestTimeout:
last_seq = -1
except InterestNack as e:
print(f'Face events nacked with reason={e.reason}')
last_seq = -1
except ValidationFailure:
print('Face events failed to validate')
last_seq = -1
await asyncio.sleep(0.1)
def test_meta_info():
data = (
b"\x06\x4e\x07\x17\x08\x05local\x08\x03ndn\x08\x06prefix\x25\x01\x00"
b"\x14\x0c\x18\x01\x00\x19\x02\x03\xe8\x1a\x03\x3a\x01\x02"
b"\x16\x03\x1b\x01\x00"
b"\x17 \x0f^\xa1\x0c\xa7\xf5Fb\xf0\x9cOT\xe0FeC\x8f92\x04\x9d\xabP\x80o\'\x94\xaa={hQ"
)
name, meta_info, content, sig = parse_data(data)
assert name == Name.from_str("/local/ndn/prefix/37=%00")
assert meta_info.content_type == ContentType.BLOB
assert meta_info.freshness_period == 1000
assert meta_info.final_block_id == Component.from_sequence_num(2)
assert sig.signature_info.signature_type == SignatureType.DIGEST_SHA256
assert content is None
algo = hashlib.sha256()
for part in sig.signature_covered_part:
algo.update(part)
assert sig.signature_value_buf == algo.digest()
def _prepare_data(self, file_path: str, name_at_repo) -> int:
"""
Shard file into data packets.
:param file_path: Local FS path to file to insert
:param name_at_repo: Name used to store file at repo
:return: Number of packets required to send this file
"""
with open(file_path, 'rb') as binary_file:
b_array = bytearray(binary_file.read())
if len(b_array) == 0:
logging.warning("File is empty")
return 0
num_packets = int((len(b_array) - 1) / MAX_BYTES_IN_DATA_PACKET + 1)
logging.info(f'There are {num_packets} packets in total')
seq = 0
for i in range(0, len(b_array), MAX_BYTES_IN_DATA_PACKET):
content = b_array[i : min(i + MAX_BYTES_IN_DATA_PACKET, len(b_array))]
name = name_at_repo[:]
name.append(str(seq))
packet = self.app.prepare_data(name, content, final_block_id=Component.from_sequence_num(num_packets - 1))
self.name_str_to_data[Name.to_str(name)] = packet
seq += 1
return num_packets
