390 lines
10 KiB
Python
390 lines
10 KiB
Python
import hashlib
|
|
import hmac
|
|
import ipaddress
|
|
import logging
|
|
import typing
|
|
import collections
|
|
from asyncio import get_event_loop, Event
|
|
from prometheus_client import Counter
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
_sha256 = hashlib.sha256
|
|
_sha512 = hashlib.sha512
|
|
_new_hash = hashlib.new
|
|
_new_hmac = hmac.new
|
|
HASHX_LEN = 11
|
|
CLAIM_HASH_LEN = 20
|
|
|
|
|
|
HISTOGRAM_BUCKETS = (
|
|
.005, .01, .025, .05, .075, .1, .25, .5, .75, 1.0, 2.5, 5.0, 7.5, 10.0, 15.0, 20.0, 30.0, 60.0, float('inf')
|
|
)
|
|
|
|
|
|
def setup_logging():
|
|
logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)-4s %(name)s:%(lineno)d: %(message)s")
|
|
logging.getLogger('aiohttp').setLevel(logging.WARNING)
|
|
logging.getLogger('elasticsearch').setLevel(logging.WARNING)
|
|
|
|
|
|
class StagedClaimtrieItem(typing.NamedTuple):
|
|
"""
|
|
Represents a claim TXO, used internally by the block processor
|
|
"""
|
|
name: str
|
|
normalized_name: str
|
|
claim_hash: bytes
|
|
amount: int
|
|
expiration_height: int
|
|
tx_num: int
|
|
position: int
|
|
root_tx_num: int
|
|
root_position: int
|
|
channel_signature_is_valid: bool
|
|
signing_hash: typing.Optional[bytes]
|
|
reposted_claim_hash: typing.Optional[bytes]
|
|
|
|
@property
|
|
def is_update(self) -> bool:
|
|
return (self.tx_num, self.position) != (self.root_tx_num, self.root_position)
|
|
|
|
def invalidate_signature(self) -> 'StagedClaimtrieItem':
|
|
return StagedClaimtrieItem(
|
|
self.name, self.normalized_name, self.claim_hash, self.amount, self.expiration_height, self.tx_num,
|
|
self.position, self.root_tx_num, self.root_position, False, None, self.reposted_claim_hash
|
|
)
|
|
|
|
|
|
def formatted_time(t, sep=' '):
|
|
"""Return a number of seconds as a string in days, hours, mins and
|
|
maybe secs."""
|
|
t = int(t)
|
|
fmts = (('{:d}d', 86400), ('{:02d}h', 3600), ('{:02d}m', 60))
|
|
parts = []
|
|
for fmt, n in fmts:
|
|
val = t // n
|
|
if parts or val:
|
|
parts.append(fmt.format(val))
|
|
t %= n
|
|
if len(parts) < 3:
|
|
parts.append(f'{t:02d}s')
|
|
return sep.join(parts)
|
|
|
|
|
|
def protocol_tuple(s):
|
|
"""Converts a protocol version number, such as "1.0" to a tuple (1, 0).
|
|
|
|
If the version number is bad, (0, ) indicating version 0 is returned."""
|
|
try:
|
|
return tuple(int(part) for part in s.split('.'))
|
|
except Exception:
|
|
return (0, )
|
|
|
|
|
|
def version_string(ptuple):
|
|
"""Convert a version tuple such as (1, 2) to "1.2".
|
|
There is always at least one dot, so (1, ) becomes "1.0"."""
|
|
while len(ptuple) < 2:
|
|
ptuple += (0, )
|
|
return '.'.join(str(p) for p in ptuple)
|
|
|
|
|
|
def protocol_version(client_req, min_tuple, max_tuple):
|
|
"""Given a client's protocol version string, return a pair of
|
|
protocol tuples:
|
|
(negotiated version, client min request)
|
|
If the request is unsupported, the negotiated protocol tuple is
|
|
None.
|
|
"""
|
|
if client_req is None:
|
|
client_min = client_max = min_tuple
|
|
else:
|
|
if isinstance(client_req, list) and len(client_req) == 2:
|
|
client_min, client_max = client_req
|
|
else:
|
|
client_min = client_max = client_req
|
|
client_min = protocol_tuple(client_min)
|
|
client_max = protocol_tuple(client_max)
|
|
|
|
result = min(client_max, max_tuple)
|
|
if result < max(client_min, min_tuple) or result == (0, ):
|
|
result = None
|
|
|
|
return result, client_min
|
|
|
|
|
|
class LRUCacheWithMetrics:
|
|
__slots__ = [
|
|
'capacity',
|
|
'cache',
|
|
'_track_metrics',
|
|
'hits',
|
|
'misses'
|
|
]
|
|
|
|
def __init__(self, capacity: int, metric_name: typing.Optional[str] = None, namespace: str = "daemon_cache"):
|
|
self.capacity = capacity
|
|
self.cache = collections.OrderedDict()
|
|
if metric_name is None:
|
|
self._track_metrics = False
|
|
self.hits = self.misses = None
|
|
else:
|
|
self._track_metrics = True
|
|
try:
|
|
self.hits = Counter(
|
|
f"{metric_name}_cache_hit_count", "Number of cache hits", namespace=namespace
|
|
)
|
|
self.misses = Counter(
|
|
f"{metric_name}_cache_miss_count", "Number of cache misses", namespace=namespace
|
|
)
|
|
except ValueError as err:
|
|
log.debug("failed to set up prometheus %s_cache_miss_count metric: %s", metric_name, err)
|
|
self._track_metrics = False
|
|
self.hits = self.misses = None
|
|
|
|
def get(self, key, default=None):
|
|
try:
|
|
value = self.cache.pop(key)
|
|
if self._track_metrics:
|
|
self.hits.inc()
|
|
except KeyError:
|
|
if self._track_metrics:
|
|
self.misses.inc()
|
|
return default
|
|
self.cache[key] = value
|
|
return value
|
|
|
|
def set(self, key, value):
|
|
try:
|
|
self.cache.pop(key)
|
|
except KeyError:
|
|
if len(self.cache) >= self.capacity:
|
|
self.cache.popitem(last=False)
|
|
self.cache[key] = value
|
|
|
|
def clear(self):
|
|
self.cache.clear()
|
|
|
|
def pop(self, key):
|
|
return self.cache.pop(key)
|
|
|
|
def __setitem__(self, key, value):
|
|
return self.set(key, value)
|
|
|
|
def __getitem__(self, item):
|
|
return self.get(item)
|
|
|
|
def __contains__(self, item) -> bool:
|
|
return item in self.cache
|
|
|
|
def __len__(self):
|
|
return len(self.cache)
|
|
|
|
def __delitem__(self, key):
|
|
self.cache.pop(key)
|
|
|
|
def __del__(self):
|
|
self.clear()
|
|
|
|
|
|
class LRUCache:
|
|
__slots__ = [
|
|
'capacity',
|
|
'cache'
|
|
]
|
|
|
|
def __init__(self, capacity: int):
|
|
self.capacity = capacity
|
|
self.cache = collections.OrderedDict()
|
|
|
|
def get(self, key, default=None):
|
|
try:
|
|
value = self.cache.pop(key)
|
|
except KeyError:
|
|
return default
|
|
self.cache[key] = value
|
|
return value
|
|
|
|
def set(self, key, value):
|
|
try:
|
|
self.cache.pop(key)
|
|
except KeyError:
|
|
if len(self.cache) >= self.capacity:
|
|
self.cache.popitem(last=False)
|
|
self.cache[key] = value
|
|
|
|
def items(self):
|
|
return self.cache.items()
|
|
|
|
def clear(self):
|
|
self.cache.clear()
|
|
|
|
def pop(self, key, default=None):
|
|
return self.cache.pop(key, default)
|
|
|
|
def __setitem__(self, key, value):
|
|
return self.set(key, value)
|
|
|
|
def __getitem__(self, item):
|
|
return self.get(item)
|
|
|
|
def __contains__(self, item) -> bool:
|
|
return item in self.cache
|
|
|
|
def __len__(self):
|
|
return len(self.cache)
|
|
|
|
def __delitem__(self, key):
|
|
self.cache.pop(key)
|
|
|
|
def __del__(self):
|
|
self.clear()
|
|
|
|
|
|
# the ipaddress module does not show these subnets as reserved
|
|
CARRIER_GRADE_NAT_SUBNET = ipaddress.ip_network('100.64.0.0/10')
|
|
IPV4_TO_6_RELAY_SUBNET = ipaddress.ip_network('192.88.99.0/24')
|
|
|
|
|
|
def is_valid_public_ipv4(address, allow_localhost: bool = False, allow_lan: bool = False):
|
|
try:
|
|
parsed_ip = ipaddress.ip_address(address)
|
|
if parsed_ip.is_loopback and allow_localhost:
|
|
return True
|
|
if allow_lan and parsed_ip.is_private:
|
|
return True
|
|
if any((parsed_ip.version != 4, parsed_ip.is_unspecified, parsed_ip.is_link_local, parsed_ip.is_loopback,
|
|
parsed_ip.is_multicast, parsed_ip.is_reserved, parsed_ip.is_private)):
|
|
return False
|
|
else:
|
|
return not any((CARRIER_GRADE_NAT_SUBNET.supernet_of(ipaddress.ip_network(f"{address}/32")),
|
|
IPV4_TO_6_RELAY_SUBNET.supernet_of(ipaddress.ip_network(f"{address}/32"))))
|
|
except (ipaddress.AddressValueError, ValueError):
|
|
return False
|
|
|
|
|
|
def sha256(x):
|
|
"""Simple wrapper of hashlib sha256."""
|
|
return _sha256(x).digest()
|
|
|
|
|
|
def ripemd160(x):
|
|
"""Simple wrapper of hashlib ripemd160."""
|
|
h = _new_hash('ripemd160')
|
|
h.update(x)
|
|
return h.digest()
|
|
|
|
|
|
def double_sha256(x):
|
|
"""SHA-256 of SHA-256, as used extensively in bitcoin."""
|
|
return sha256(sha256(x))
|
|
|
|
|
|
def hmac_sha512(key, msg):
|
|
"""Use SHA-512 to provide an HMAC."""
|
|
return _new_hmac(key, msg, _sha512).digest()
|
|
|
|
|
|
def hash160(x):
|
|
"""RIPEMD-160 of SHA-256. Used to make bitcoin addresses from pubkeys."""
|
|
return ripemd160(sha256(x))
|
|
|
|
|
|
def hash_to_hex_str(x: bytes) -> str:
|
|
"""Convert a big-endian binary hash to displayed hex string.
|
|
|
|
Display form of a binary hash is reversed and converted to hex.
|
|
"""
|
|
return x[::-1].hex()
|
|
|
|
|
|
def hex_str_to_hash(x: str) -> bytes:
|
|
"""Convert a displayed hex string to a binary hash."""
|
|
return bytes.fromhex(x)[::-1]
|
|
|
|
|
|
|
|
INVALID_REQUEST = -32600
|
|
INVALID_ARGS = -32602
|
|
|
|
|
|
class CodeMessageError(Exception):
|
|
|
|
@property
|
|
def code(self):
|
|
return self.args[0]
|
|
|
|
@property
|
|
def message(self):
|
|
return self.args[1]
|
|
|
|
def __eq__(self, other):
|
|
return (isinstance(other, self.__class__) and
|
|
self.code == other.code and self.message == other.message)
|
|
|
|
def __hash__(self):
|
|
# overridden to make the exception hashable
|
|
# see https://bugs.python.org/issue28603
|
|
return hash((self.code, self.message))
|
|
|
|
@classmethod
|
|
def invalid_args(cls, message):
|
|
return cls(INVALID_ARGS, message)
|
|
|
|
@classmethod
|
|
def invalid_request(cls, message):
|
|
return cls(INVALID_REQUEST, message)
|
|
|
|
@classmethod
|
|
def empty_batch(cls):
|
|
return cls.invalid_request('batch is empty')
|
|
|
|
|
|
class RPCError(CodeMessageError):
|
|
pass
|
|
|
|
|
|
|
|
class DaemonError(Exception):
|
|
"""Raised when the daemon returns an error in its results."""
|
|
|
|
|
|
class WarmingUpError(Exception):
|
|
"""Internal - when the daemon is warming up."""
|
|
|
|
|
|
class WorkQueueFullError(Exception):
|
|
"""Internal - when the daemon's work queue is full."""
|
|
|
|
|
|
class TaskGroup:
|
|
def __init__(self, loop=None):
|
|
self._loop = loop or get_event_loop()
|
|
self._tasks = set()
|
|
self.done = Event()
|
|
self.started = Event()
|
|
|
|
def __len__(self):
|
|
return len(self._tasks)
|
|
|
|
def add(self, coro):
|
|
task = self._loop.create_task(coro)
|
|
self._tasks.add(task)
|
|
self.started.set()
|
|
self.done.clear()
|
|
task.add_done_callback(self._remove)
|
|
return task
|
|
|
|
def _remove(self, task):
|
|
self._tasks.remove(task)
|
|
if len(self._tasks) < 1:
|
|
self.done.set()
|
|
self.started.clear()
|
|
|
|
def cancel(self):
|
|
for task in self._tasks:
|
|
task.cancel()
|
|
self.done.set()
|
|
self.started.clear()
|