lbry-sdk/lbrynet/conf.py
2019-01-24 00:13:15 -05:00

525 lines
17 KiB
Python

import os
import re
import sys
import typing
import json
import logging
import yaml
from argparse import ArgumentParser
from contextlib import contextmanager
from appdirs import user_data_dir, user_config_dir
from lbrynet.error import InvalidCurrencyError
from lbrynet.dht import constants
log = logging.getLogger(__name__)
NOT_SET = type(str('NOT_SET'), (object,), {})
T = typing.TypeVar('T')
KB = 2 ** 10
MB = 2 ** 20
ANALYTICS_ENDPOINT = 'https://api.segment.io/v1'
ANALYTICS_TOKEN = 'Ax5LZzR1o3q3Z3WjATASDwR5rKyHH0qOIRIbLmMXn2H='
API_ADDRESS = 'lbryapi'
APP_NAME = 'LBRY'
BLOBFILES_DIR = 'blobfiles'
CRYPTSD_FILE_EXTENSION = '.cryptsd'
CURRENCIES = {
'BTC': {'type': 'crypto'},
'LBC': {'type': 'crypto'},
'USD': {'type': 'fiat'},
}
ICON_PATH = 'icons' if 'win' in sys.platform else 'app.icns'
LOG_FILE_NAME = 'lbrynet.log'
LOG_POST_URL = 'https://lbry.io/log-upload'
MAX_BLOB_REQUEST_SIZE = 64 * KB
MAX_HANDSHAKE_SIZE = 64 * KB
MAX_REQUEST_SIZE = 64 * KB
MAX_RESPONSE_INFO_SIZE = 64 * KB
MAX_BLOB_INFOS_TO_REQUEST = 20
PROTOCOL_PREFIX = 'lbry'
SLACK_WEBHOOK = (
'nUE0pUZ6Yl9bo29epl5moTSwnl5wo20ip2IlqzywMKZiIQSFZR5'
'AHx4mY0VmF0WQZ1ESEP9kMHZlp1WzJwWOoKN3ImR1M2yUAaMyqGZ='
)
HEADERS_FILE_SHA256_CHECKSUM = (
366295, 'b0c8197153a33ccbc52fb81a279588b6015b68b7726f73f6a2b81f7e25bfe4b9'
)
class Setting(typing.Generic[T]):
def __init__(self, doc: str, default: typing.Optional[T] = None,
previous_names: typing.Optional[typing.List[str]] = None):
self.doc = doc
self.default = default
self.previous_names = previous_names or []
def __set_name__(self, owner, name):
self.name = name
def __get__(self, obj: typing.Optional['BaseConfig'], owner) -> T:
if obj is None:
return self
for location in obj.search_order:
if self.name in location:
return location[self.name]
return self.default
def __set__(self, obj: 'BaseConfig', val: typing.Union[T, NOT_SET]):
if val == NOT_SET:
for location in obj.modify_order:
if self.name in location:
del location[self.name]
else:
self.validate(val)
for location in obj.modify_order:
location[self.name] = val
def validate(self, val):
raise NotImplementedError()
def deserialize(self, value):
return value
def serialize(self, value):
return value
class String(Setting[str]):
def validate(self, val):
assert isinstance(val, str), \
f"Setting '{self.name}' must be a string."
class Integer(Setting[int]):
def validate(self, val):
assert isinstance(val, int), \
f"Setting '{self.name}' must be an integer."
class Float(Setting[float]):
def validate(self, val):
assert isinstance(val, float), \
f"Setting '{self.name}' must be a decimal."
class Toggle(Setting[bool]):
def validate(self, val):
assert isinstance(val, bool), \
f"Setting '{self.name}' must be a true/false value."
class Path(String):
def __init__(self, doc: str, default: str = '', *args, **kwargs):
super().__init__(doc, default, *args, **kwargs)
def __get__(self, obj, owner):
value = super().__get__(obj, owner)
if isinstance(value, str):
return os.path.expanduser(os.path.expandvars(value))
return value
class MaxKeyFee(Setting[dict]):
def validate(self, value):
assert isinstance(value, dict), \
f"Setting '{self.name}' must be of the format \"{'currency': 'USD', 'amount': 50.0}\"."
assert set(value) == {'currency', 'amount'}, \
f"Setting '{self.name}' must contain a 'currency' and an 'amount' field."
currency = str(value["currency"]).upper()
if currency not in CURRENCIES:
raise InvalidCurrencyError(currency)
serialize = staticmethod(json.dumps)
deserialize = staticmethod(json.loads)
class Servers(Setting[list]):
def validate(self, val):
assert isinstance(val, (tuple, list)), \
f"Setting '{self.name}' must be a tuple or list of servers."
for idx, server in enumerate(val):
assert isinstance(server, (tuple, list)) and len(server) == 2, \
f"Server defined '{server}' at index {idx} in setting " \
f"'{self.name}' must be a tuple or list of two items."
assert isinstance(server[0], str), \
f"Server defined '{server}' at index {idx} in setting " \
f"'{self.name}' must be have hostname as string in first position."
assert isinstance(server[1], int), \
f"Server defined '{server}' at index {idx} in setting " \
f"'{self.name}' must be have port as int in second position."
def deserialize(self, value):
servers = []
if isinstance(value, list):
for server in value:
if isinstance(server, str) and server.count(':') == 1:
host, port = server.split(':')
try:
servers.append((host, int(port)))
except ValueError:
pass
return servers
def serialize(self, value):
if value:
return [f"{host}:{port}" for host, port in value]
return value
class Strings(Setting[list]):
def validate(self, val):
assert isinstance(val, (tuple, list)), \
f"Setting '{self.name}' must be a tuple or list of strings."
for idx, string in enumerate(val):
assert isinstance(string, str), \
f"Value of '{string}' at index {idx} in setting " \
f"'{self.name}' must be a string."
class EnvironmentAccess:
PREFIX = 'LBRY_'
def __init__(self, environ: dict):
self.environ = environ
def __contains__(self, item: str):
return f'{self.PREFIX}{item.upper()}' in self.environ
def __getitem__(self, item: str):
return self.environ[f'{self.PREFIX}{item.upper()}']
class ArgumentAccess:
def __init__(self, args: dict):
self.args = args
def __contains__(self, item: str):
return getattr(self.args, item, None) is not None
def __getitem__(self, item: str):
return getattr(self.args, item)
class ConfigFileAccess:
def __init__(self, config: 'BaseConfig', path: str):
self.configuration = config
self.path = path
self.data = {}
if self.exists:
self.load()
@property
def exists(self):
return self.path and os.path.exists(self.path)
def load(self):
cls = type(self.configuration)
with open(self.path, 'r') as config_file:
raw = config_file.read()
serialized = yaml.load(raw) or {}
for key, value in serialized.items():
attr = getattr(cls, key, None)
if attr is None:
for setting in self.configuration.settings:
if key in setting.previous_names:
attr = setting
break
if attr is not None:
self.data[key] = attr.deserialize(value)
def save(self):
cls = type(self.configuration)
serialized = {}
for key, value in self.data.items():
attr = getattr(cls, key)
serialized[key] = attr.serialize(value)
with open(self.path, 'w') as config_file:
config_file.write(yaml.safe_dump(serialized, default_flow_style=False))
def upgrade(self) -> bool:
upgraded = False
for key in list(self.data):
for setting in self.configuration.settings:
if key in setting.previous_names:
self.data[setting.name] = self.data[key]
del self.data[key]
upgraded = True
break
return upgraded
def __contains__(self, item: str):
return item in self.data
def __getitem__(self, item: str):
return self.data[item]
def __setitem__(self, key, value):
self.data[key] = value
def __delitem__(self, key):
del self.data[key]
class BaseConfig:
config = Path("Path to configuration file.")
def __init__(self, **kwargs):
self.runtime = {} # set internally or by various API calls
self.arguments = {} # from command line arguments
self.environment = {} # from environment variables
self.persisted = {} # from config file
self._updating_config = False
for key, value in kwargs.items():
setattr(self, key, value)
@contextmanager
def update_config(self):
if not isinstance(self.persisted, ConfigFileAccess):
raise TypeError("Config file cannot be updated.")
self._updating_config = True
yield self
self._updating_config = False
self.persisted.save()
@property
def modify_order(self):
locations = [self.runtime]
if self._updating_config:
locations.append(self.persisted)
return locations
@property
def search_order(self):
return [
self.runtime,
self.arguments,
self.environment,
self.persisted
]
@classmethod
def get_settings(cls):
for setting in cls.__dict__.values():
if isinstance(setting, Setting):
yield setting
@property
def settings(self):
return self.get_settings()
@property
def settings_dict(self):
return {
setting.name: getattr(self, setting.name) for setting in self.settings
}
@classmethod
def create_from_arguments(cls, args):
conf = cls()
conf.set_arguments(args)
conf.set_environment()
conf.set_persisted()
return conf
@classmethod
def contribute_args(cls, parser: ArgumentParser):
for setting in cls.get_settings():
if isinstance(setting, Toggle):
parser.add_argument(
f"--{setting.name.replace('_', '-')}",
help=setting.doc,
action="store_true"
)
else:
parser.add_argument(
f"--{setting.name.replace('_', '-')}",
help=setting.doc
)
def set_arguments(self, args):
self.arguments = ArgumentAccess(args)
def set_environment(self, environ=None):
self.environment = EnvironmentAccess(environ or os.environ)
def set_persisted(self, config_file_path=None):
if config_file_path is None:
config_file_path = self.config
if not config_file_path:
return
ext = os.path.splitext(config_file_path)[1]
assert ext in ('.yml', '.yaml'),\
f"File extension '{ext}' is not supported, " \
f"configuration file must be in YAML (.yaml)."
self.persisted = ConfigFileAccess(self, config_file_path)
if self.persisted.upgrade():
self.persisted.save()
class CLIConfig(BaseConfig):
api = String('Host name and port for lbrynet daemon API.', 'localhost:5279')
@property
def api_connection_url(self) -> str:
return f"http://{self.api}/lbryapi"
@property
def api_host(self):
return self.api.split(':')[0]
@property
def api_port(self):
return int(self.api.split(':')[1])
class Config(CLIConfig):
data_dir = Path("Directory path to store blobs.")
download_dir = Path("Directory path to place assembled files downloaded from LBRY.")
wallet_dir = Path(
"Directory containing a 'wallets' subdirectory with 'default_wallet' file.",
previous_names=['lbryum_wallet_dir']
)
share_usage_data = Toggle(
"Whether to share usage stats and diagnostic info with LBRY.", True,
previous_names=['upload_log', 'upload_log', 'share_debug_info']
)
# claims set to expire within this many blocks will be
# automatically renewed after startup (if set to 0, renews
# will not be made automatically)
auto_renew_claim_height_delta = Integer("", 0)
cache_time = Integer("", 150)
data_rate = Float("points/megabyte", .0001)
delete_blobs_on_remove = Toggle("", True)
dht_node_port = Integer("", 4444)
download_timeout = Float("", 30.0)
blob_download_timeout = Float("", 20.0)
peer_connect_timeout = Float("", 3.0)
node_rpc_timeout = Float("", constants.rpc_timeout)
is_generous_host = Toggle("", True)
announce_head_blobs_only = Toggle("", True)
concurrent_announcers = Integer("", 10)
known_dht_nodes = Servers("", [
('lbrynet1.lbry.io', 4444), # US EAST
('lbrynet2.lbry.io', 4444), # US WEST
('lbrynet3.lbry.io', 4444), # EU
('lbrynet4.lbry.io', 4444) # ASIA
])
max_connections_per_stream = Integer("", 5)
seek_head_blob_first = Toggle("", True)
# TODO: writing json on the cmd line is a pain, come up with a nicer
# parser for this data structure. maybe 'USD:25'
max_key_fee = MaxKeyFee("", {'currency': 'USD', 'amount': 50.0})
disable_max_key_fee = Toggle("", False)
min_info_rate = Float("points/1000 infos", .02)
min_valuable_hash_rate = Float("points/1000 infos", .05)
min_valuable_info_rate = Float("points/1000 infos", .05)
peer_port = Integer("", 3333)
pointtrader_server = String("", 'http://127.0.0.1:2424')
reflector_port = Integer("", 5566)
# if reflect_uploads is True, send files to reflector after publishing (as well as a periodic check in the
# event the initial upload failed or was disconnected part way through, provided the auto_re_reflect_interval > 0)
reflect_uploads = Toggle("", True)
auto_re_reflect_interval = Integer("set to 0 to disable", 86400)
reflector_servers = Servers("", [
('reflector.lbry.io', 5566)
])
run_reflector_server = Toggle("adds reflector to components_to_skip unless True", False)
sd_download_timeout = Integer("", 3)
peer_search_timeout = Integer("", 60)
use_upnp = Toggle("", True)
use_keyring = Toggle("", False)
blockchain_name = String("", 'lbrycrd_main')
lbryum_servers = Servers("", [
('lbryumx1.lbry.io', 50001),
('lbryumx2.lbry.io', 50001)
])
s3_headers_depth = Integer("download headers from s3 when the local height is more than 10 chunks behind", 96 * 10)
components_to_skip = Strings("components which will be skipped during start-up of daemon", [])
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.set_default_paths()
def set_default_paths(self):
if 'darwin' in sys.platform.lower():
get_directories = get_darwin_directories
elif 'win' in sys.platform.lower():
get_directories = get_windows_directories
elif 'linux' in sys.platform.lower():
get_directories = get_linux_directories
else:
return
cls = type(self)
cls.data_dir.default, cls.wallet_dir.default, cls.download_dir.default = get_directories()
cls.config.default = os.path.join(
self.data_dir, 'daemon_settings.yml'
)
@property
def log_file_path(self):
return os.path.join(self.data_dir, 'lbrynet.log')
def get_windows_directories() -> typing.Tuple[str, str, str]:
from lbrynet.winpaths import get_path, FOLDERID, UserHandle
download_dir = get_path(FOLDERID.Downloads, UserHandle.current)
# old
appdata = get_path(FOLDERID.RoamingAppData, UserHandle.current)
data_dir = os.path.join(appdata, 'lbrynet')
lbryum_dir = os.path.join(appdata, 'lbryum')
if os.path.isdir(data_dir) or os.path.isdir(lbryum_dir):
return data_dir, lbryum_dir, download_dir
# new
data_dir = user_data_dir('lbrynet', 'lbry')
lbryum_dir = user_data_dir('lbryum', 'lbry')
download_dir = get_path(FOLDERID.Downloads, UserHandle.current)
return data_dir, lbryum_dir, download_dir
def get_darwin_directories() -> typing.Tuple[str, str, str]:
data_dir = user_data_dir('LBRY')
lbryum_dir = os.path.expanduser('~/.lbryum')
download_dir = os.path.expanduser('~/Downloads')
return data_dir, lbryum_dir, download_dir
def get_linux_directories() -> typing.Tuple[str, str, str]:
try:
with open(os.path.join(user_config_dir(), 'user-dirs.dirs'), 'r') as xdg:
down_dir = re.search(r'XDG_DOWNLOAD_DIR=(.+)', xdg.read()).group(1)
down_dir = re.sub('\$HOME', os.getenv('HOME'), down_dir)
download_dir = re.sub('\"', '', down_dir)
except EnvironmentError:
download_dir = os.getenv('XDG_DOWNLOAD_DIR')
if not download_dir:
download_dir = os.path.expanduser('~/Downloads')
# old
data_dir = os.path.expanduser('~/.lbrynet')
lbryum_dir = os.path.expanduser('~/.lbryum')
if os.path.isdir(data_dir) or os.path.isdir(lbryum_dir):
return data_dir, lbryum_dir, download_dir
# new
return user_data_dir('lbry/lbrynet'), user_data_dir('lbry/lbryum'), download_dir