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90 lines
3.8 KiB
90 lines
3.8 KiB
# Copyright (c) 2016, Neil Booth
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#
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# All rights reserved.
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#
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# See the file "LICENCE" for information about the copyright
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# and warranty status of this software.
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'''Class for handling environment configuration and defaults.'''
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from os import environ
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from lib.coins import Coin
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from lib.util import LoggedClass
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class Env(LoggedClass):
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'''Wraps environment configuration.'''
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class Error(Exception):
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pass
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def __init__(self):
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super().__init__()
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coin_name = self.default('COIN', 'Bitcoin')
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network = self.default('NETWORK', 'mainnet')
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self.coin = Coin.lookup_coin_class(coin_name, network)
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self.db_dir = self.required('DB_DIRECTORY')
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self.utxo_MB = self.integer('UTXO_MB', 1000)
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self.hist_MB = self.integer('HIST_MB', 300)
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self.host = self.default('HOST', 'localhost')
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self.reorg_limit = self.integer('REORG_LIMIT', self.coin.REORG_LIMIT)
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self.daemon_url = self.required('DAEMON_URL')
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# Server stuff
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self.tcp_port = self.integer('TCP_PORT', None)
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self.ssl_port = self.integer('SSL_PORT', None)
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if self.ssl_port:
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self.ssl_certfile = self.required('SSL_CERTFILE')
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self.ssl_keyfile = self.required('SSL_KEYFILE')
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self.rpc_port = self.integer('RPC_PORT', 8000)
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self.max_subscriptions = self.integer('MAX_SUBSCRIPTIONS', 10000)
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self.banner_file = self.default('BANNER_FILE', None)
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self.anon_logs = self.default('ANON_LOGS', False)
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self.log_sessions = self.integer('LOG_SESSIONS', 3600)
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# The electrum client takes the empty string as unspecified
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self.donation_address = self.default('DONATION_ADDRESS', '')
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self.db_engine = self.default('DB_ENGINE', 'leveldb')
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# Server limits to help prevent DoS
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self.max_send = self.integer('MAX_SEND', 1000000)
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self.max_subs = self.integer('MAX_SUBS', 250000)
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self.max_sessions = self.integer('MAX_SESSIONS', 1000)
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self.max_session_subs = self.integer('MAX_SESSION_SUBS', 50000)
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self.bandwidth_limit = self.integer('BANDWIDTH_LIMIT', 2000000)
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self.session_timeout = self.integer('SESSION_TIMEOUT', 600)
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# IRC
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self.irc = self.default('IRC', False)
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self.irc_nick = self.default('IRC_NICK', None)
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self.report_tcp_port = self.integer('REPORT_TCP_PORT', self.tcp_port)
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self.report_ssl_port = self.integer('REPORT_SSL_PORT', self.ssl_port)
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self.report_host = self.default('REPORT_HOST', self.host)
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self.report_tcp_port_tor = self.integer('REPORT_TCP_PORT_TOR',
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self.report_tcp_port
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if self.report_tcp_port else
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self.tcp_port)
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self.report_ssl_port_tor = self.integer('REPORT_SSL_PORT_TOR',
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self.report_ssl_port
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if self.report_ssl_port else
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self.ssl_port)
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self.report_host_tor = self.default('REPORT_HOST_TOR', None)
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# Debugging
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self.force_reorg = self.integer('FORCE_REORG', 0)
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def default(self, envvar, default):
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return environ.get(envvar, default)
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def required(self, envvar):
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value = environ.get(envvar)
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if value is None:
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raise self.Error('required envvar {} not set'.format(envvar))
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return value
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def integer(self, envvar, default):
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value = environ.get(envvar)
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if value is None:
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return default
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try:
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return int(value)
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except:
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raise self.Error('cannot convert envvar {} value {} to an integer'
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.format(envvar, value))
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