32 lines
998 B
Python
32 lines
998 B
Python
import re
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from web3 import Web3 as Web3super
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from web3 import WebsocketProvider, HTTPProvider
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from web3ext.middleware import PlatformMiddleware
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re_websocket = re.compile('^wss?://')
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re_http = re.compile('^https?://')
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#def create_middleware(ipcaddr='/var/run/cic-platform/cic.ipc'):
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def create_middleware(ipcaddr='/tmp/foo.ipc'):
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PlatformMiddleware.ipcaddr = ipcaddr
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return PlatformMiddleware
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# overrides the original Web3 constructor
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def Web3(blockchain_providers=[], ipcaddr=None):
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if len(blockchain_providers) > 1:
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raise ValueError('backend only supports single provider')
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provider = None
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if re.match(re_websocket, blockchain_providers[0]) != None:
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provider = WebsocketProvider(blockchain_providers[0])
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elif re.match(re_http, blockchain_providers[0]) != None:
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provider = HTTPProvider(blockchain_providers[0])
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w3 = Web3super(provider)
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w3.middleware_onion.add(create_middleware())
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w3.eth.personal = w3.geth.personal
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return w3
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