87 lines
2.9 KiB
Python
87 lines
2.9 KiB
Python
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# standard imports
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import logging
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import copy
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# external imports
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from cic_registry import CICRegistry
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from eth_token_index import TokenUniqueSymbolIndex
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from eth_accounts_index import AccountRegistry
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from chainlib.chain import ChainSpec
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from cic_registry.chain import ChainRegistry
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from cic_registry.helper.declarator import DeclaratorOracleAdapter
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logg = logging.getLogger(__name__)
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class TokenOracle:
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def __init__(self, conn, chain_spec, registry):
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self.tokens = []
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self.chain_spec = chain_spec
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self.registry = registry
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token_registry_contract = CICRegistry.get_contract(chain_spec, 'TokenRegistry', 'Registry')
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self.getter = TokenUniqueSymbolIndex(conn, token_registry_contract.address())
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def get_tokens(self):
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token_count = self.getter.count()
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if token_count == len(self.tokens):
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return self.tokens
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for i in range(len(self.tokens), token_count):
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token_address = self.getter.get_index(i)
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t = self.registry.get_address(self.chain_spec, token_address)
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token_symbol = t.symbol()
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self.tokens.append(t)
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logg.debug('adding token idx {} symbol {} address {}'.format(i, token_symbol, token_address))
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return copy.copy(self.tokens)
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class AccountsOracle:
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def __init__(self, conn, chain_spec, registry):
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self.accounts = []
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self.chain_spec = chain_spec
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self.registry = registry
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accounts_registry_contract = CICRegistry.get_contract(chain_spec, 'AccountRegistry', 'Registry')
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self.getter = AccountRegistry(conn, accounts_registry_contract.address())
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def get_accounts(self):
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accounts_count = self.getter.count()
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if accounts_count == len(self.accounts):
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return self.accounts
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for i in range(len(self.accounts), accounts_count):
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account = self.getter.get_index(i)
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self.accounts.append(account)
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logg.debug('adding account {}'.format(account))
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return copy.copy(self.accounts)
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def init_registry(config, w3):
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chain_spec = ChainSpec.from_chain_str(config.get('CIC_CHAIN_SPEC'))
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CICRegistry.init(w3, config.get('CIC_REGISTRY_ADDRESS'), chain_spec)
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CICRegistry.add_path(config.get('ETH_ABI_DIR'))
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chain_registry = ChainRegistry(chain_spec)
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CICRegistry.add_chain_registry(chain_registry, True)
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declarator = CICRegistry.get_contract(chain_spec, 'AddressDeclarator', interface='Declarator')
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trusted_addresses_src = config.get('CIC_TRUST_ADDRESS')
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if trusted_addresses_src == None:
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raise ValueError('At least one trusted address must be declared in CIC_TRUST_ADDRESS')
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trusted_addresses = trusted_addresses_src.split(',')
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for address in trusted_addresses:
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logg.info('using trusted address {}'.format(address))
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oracle = DeclaratorOracleAdapter(declarator.contract, trusted_addresses)
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chain_registry.add_oracle(oracle, 'naive_erc20_oracle')
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return CICRegistry
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