MulticallWrapper

Documentation for eth_defi.event_reader.multicall_batcher.MulticallWrapper Python class.

class MulticallWrapper

Bases: abc.ABC

Wrap a call going through the Multicall contract.

• Each call in the batch is represented by one instance of MulticallWrapper

• This class must be subclassed and needed get_key(), handle() and __repr__()

Attributes summary

call	Bound web3.py function with args in the place
debug	Set for extensive info logging
contract_address

Methods summary

__init__(call, debug)
get_address_and_data()
get_human_args()	Get Solidity args as human readable string for debugging.
get_human_id()
get_key()	Get key that will identify this call in the result dictionary
handle(succeed, raw_return_value)	Parse the call result.
multicall_callback(succeed, raw_return_value)	Convert the raw Solidity function call result to a denominated token amount.

call: web3.contract.contract.ContractFunction

Bound web3.py function with args in the place

debug: bool

Set for extensive info logging

abstract get_key()

Get key that will identify this call in the result dictionary

Return type

Hashable

abstract handle(succeed, raw_return_value)

Parse the call result.

Parameters

• succeed (bool) – Did we revert or not

• raw_return_value (bytes) – Undecoded bytes from the Solidity function call

Returns

The value placed in the return dict

Return type

Any

get_human_args()

Get Solidity args as human readable string for debugging.

Return type

str

multicall_callback(succeed, raw_return_value)

Convert the raw Solidity function call result to a denominated token amount.

• Multicall library callback

Returns

The token amount in the reserve currency we get on the market sell.

None if this path was not supported (Solidity reverted).

Parameters

• succeed (bool) –

• raw_return_value (Any) –

Return type

Any

__init__(call, debug)

Parameters

• call (web3.contract.contract.ContractFunction) –

• debug (bool) –

Return type

None