77 lines
1.8 KiB
Python
77 lines
1.8 KiB
Python
# external imports
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from chainlib.jsonrpc import JSONRPCException
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from eth_erc20 import ERC20
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from eth_accounts_index import AccountsIndex
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from eth_token_index import TokenUniqueSymbolIndex
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class ERC20Token:
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def __init__(self, chain_spec, address, conn):
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self.__address = address
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c = ERC20(chain_spec)
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o = c.symbol(address)
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r = conn.do(o)
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self.__symbol = c.parse_symbol(r)
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o = c.decimals(address)
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r = conn.do(o)
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self.__decimals = c.parse_decimals(r)
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def symbol(self):
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return self.__symbol
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def decimals(self):
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return self.__decimals
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class IndexCache:
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def __init__(self, chain_spec, address):
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self.address = address
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self.chain_spec = chain_spec
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def parse(self, r):
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return r
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def get(self, conn):
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entries = []
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i = 0
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while True:
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o = self.o.entry(self.address, i)
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try:
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r = conn.do(o)
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entries.append(self.parse(r, conn))
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except JSONRPCException:
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return entries
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i += 1
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class AccountRegistryCache(IndexCache):
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def __init__(self, chain_spec, address):
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super(AccountRegistryCache, self).__init__(chain_spec, address)
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self.o = AccountsIndex(chain_spec)
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self.get_accounts = self.get
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def parse(self, r, conn):
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return self.o.parse_account(r)
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class TokenRegistryCache(IndexCache):
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def __init__(self, chain_spec, address):
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super(TokenRegistryCache, self).__init__(chain_spec, address)
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self.o = TokenUniqueSymbolIndex(chain_spec)
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self.get_tokens = self.get
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def parse(self, r, conn):
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token_address = self.o.parse_entry(r)
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return ERC20Token(self.chain_spec, token_address, conn)
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