def wait_for_transaction_receipt(self, txid):
LOG.info("Waiting for transaction receipt from the DID sidechain...")
try:
w3 = Web3(Web3.HTTPProvider(self.sidechain_rpc))
tx_receipt = w3.eth.wait_for_transaction_receipt(txid,
timeout=30,
poll_latency=0.1)
return {
"tx_receipt": json.loads(Web3.toJSON(tx_receipt)),
"err_type": None,
"err_message": None
}
except TimeExhausted as e:
LOG.info(
f"Timed out while sending transactions to the DID sidechain: {str(e)}"
)
return {
"tx_receipt": {},
"err_type": "TimeExhausted",
"err_message": str(e)
}
except Exception as e:
LOG.info(
f"Error while sending transactions to the DID sidechain: {str(e)}"
)
return {
"tx_receipt": {},
"err_type": "Exception",
"err_message": str(e)
}
def __init__(self,
ipc_path: str = DEFAULT_IPC_PATH,
timeout: int = TIMEOUT,
testnet: bool = False):
super().__init__()
self.w3 = Web3(provider=IPCProvider(ipc_path=ipc_path, timeout=timeout)
) # TODO: Unify with clients or build error handling
self.ipc_path = ipc_path
self.testnet = testnet
def get_block_count(self) -> int:
LOG.info("Get block count...")
try:
w3 = Web3(Web3.HTTPProvider(self.sidechain_rpc))
currentBlock = w3.eth.get_block_number()
LOG.info("Actual block number: " + str(currentBlock))
return currentBlock
except Exception as e:
LOG.info(f"Error while getting block count: {str(e)}")
return None
def get_raw_transaction(self, txid):
LOG.info(f"Retrieving transaction {txid} from the DID sidechain...")
try:
w3 = Web3(Web3.HTTPProvider(self.sidechain_rpc))
tx = w3.eth.get_transaction_receipt(txid)
return json.loads(Web3.toJSON(tx))
except Exception as e:
LOG.info(
f"Error while getting raw transaction for a txid: {str(e)}")
return None
def send_raw_transaction(self, signed_transaction):
LOG.info("Sending transaction to the DID sidechain...")
try:
w3 = Web3(Web3.HTTPProvider(self.sidechain_rpc))
tx = w3.eth.send_raw_transaction(signed_transaction.rawTransaction)
return {"tx_id": tx.hex(), "error": None}
except Exception as e:
LOG.info(
f"Error while sending transactions to the DID sidechain: {str(e)}"
)
return {"tx_id": None, "error": str(e)}
def get_balance(self, address):
LOG.info(
f"Retrieving current balance on DID sidechain for address {address}"
)
balance = 0
try:
w3 = Web3(Web3.HTTPProvider(self.sidechain_rpc))
balance = float(w3.eth.get_balance(
Web3.toChecksumAddress(address)))
balance = balance / 1000000000000000000.0
except Exception as e:
LOG.info(f"Error while retrieving balance for an address: {e}")
return balance
def web3():
provider = EthereumTesterProvider()
w3 = Web3(provider)
# Delete this whole block after eth-account has passed security audit
try:
w3.eth.account
except AttributeError:
pass
else:
raise AssertionError("Unaudited features must be disabled by default")
w3.eth.enable_unaudited_features()
return w3
def get_web3(network_url: str) -> Web3:
"""
Return a web3 instance connected via the given network_url.
Adds POA middleware when connecting to the Rinkeby Testnet.
A note about using the `rinkeby` testnet:
Web3 py has an issue when making some requests to `rinkeby`
- the issue is described here: https://github.com/ethereum/web3.py/issues/549
- and the fix is here: https://web3py.readthedocs.io/en/latest/middleware.html#geth-style-proof-of-authority
"""
provider = get_web3_connection_provider(network_url)
web3 = Web3(provider)
if web3.eth.chain_id == 4:
web3.middleware_onion.inject(geth_poa_middleware, layer=0)
return web3
def __init__(self, requester: Requester, ethClient: EthClientInterface,
s3manager: S3Manager, bucketName: str):
self.requester = requester
self.ethClient = ethClient
self.s3manager = s3manager
self.bucketName = bucketName
self.w3 = Web3()
with open('./contracts/IERC721Metadata.json') as contractJsonFile:
erc721MetadataContractJson = json.load(contractJsonFile)
self.erc721MetadataContractAbi = erc721MetadataContractJson['abi']
self.erc721MetadataUriFunctionAbi = [
internalAbi for internalAbi in self.erc721MetadataContractAbi
if internalAbi.get('name') == 'tokenURI'
][0]
self.erc721MetadataNameFunctionAbi = [
internalAbi for internalAbi in self.erc721MetadataContractAbi
if internalAbi.get('name') == 'name'
][0]
with open('./contracts/CryptoPunksMetadata.json') as contractJsonFile:
contractJson = json.load(contractJsonFile)
self.cryptoPunksContract = self.w3.eth.contract(
address='0x16F5A35647D6F03D5D3da7b35409D65ba03aF3B2',
abi=contractJson['abi'])
self.cryptoPunksAttributesFunctionAbi = [
internalAbi for internalAbi in self.cryptoPunksContract.abi
if internalAbi.get('name') == 'punkAttributes'
][0]
self.cryptoPunksImageSvgFunctionAbi = [
internalAbi for internalAbi in self.cryptoPunksContract.abi
if internalAbi.get('name') == 'punkImageSvg'
][0]
with open('./contracts/IERC1155MetadataURI.json') as contractJsonFile:
erc1155MetadataContractJson = json.load(contractJsonFile)
self.erc1155MetadataContractAbi = erc1155MetadataContractJson['abi']
self.erc1155MetadataUriFunctionAbi = [
internalAbi for internalAbi in self.erc1155MetadataContractAbi
if internalAbi.get('name') == 'uri'
][0]
#self.erc1155MetadataNameFunctionAbi = [internalAbi for internalAbi in self.erc1155MetadataContractAbi if internalAbi.get('name') == 'name'][0]
with open('./contracts/IERC165.json') as contractJsonFile:
erc165MetadataContractJson = json.load(contractJsonFile)
self.erc165MetadataContractAbi = erc165MetadataContractJson['abi']
self.erc165SupportInterfaceUriFunctionAbi = [
internalAbi for internalAbi in self.erc165MetadataContractAbi
if internalAbi.get('name') == 'supportsInterface'
][0]
def web3():
provider = EthereumTesterProvider()
return Web3(provider)
def w3_strict_abi():
w3 = Web3(EthereumTesterProvider())
w3.enable_strict_bytes_type_checking()
return w3
##run ganache-cli with ganache-cli --acctKeys ganache-accounts.json
## ganache-cli --acctKeys ganache-accounts.json
##this will generate ganache-accounts.json which will have addresses dict with each key as private key
##and private_keys key which is a list of private keys
import json
from web3.auto import w3
from eth_account.messages import encode_defunct
from eth_account.datastructures import AttributeDict
from web3.main import Web3
import sys, os
filepath = os.path.dirname(os.path.abspath(__file__))
w3 = Web3()
def read_keys():
_path = os.path.join(os.path.dirname(filepath), "ganache-accounts.json")
f = open(_path, "r")
data = json.loads(f.read())
return data["addresses"], data["private_keys"]
def to_32byte_hex(val):
return Web3.toHex(Web3.toBytes(val).rjust(32, b'\0'))
def ec_revoverable_message(msg, private_key):
signed_message = sign_message(msg, private_key)
