116 lines
3.6 KiB
Python
116 lines
3.6 KiB
Python
from typing import List, Tuple, Optional
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from mev_inspect.traces import (
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get_child_traces,
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is_child_of_any_address,
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)
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from mev_inspect.schemas.classified_traces import (
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ClassifiedTrace,
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CallTrace,
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DecodedCallTrace,
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Classification,
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Protocol,
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)
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from mev_inspect.transfers import get_transfer
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from mev_inspect.schemas.transfers import Transfer
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from mev_inspect.schemas.liquidations import Liquidation
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AAVE_CONTRACT_ADDRESSES: List[str] = [
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# AAVE Proxy
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"0x398ec7346dcd622edc5ae82352f02be94c62d119",
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# AAVE V2
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"0x7d2768de32b0b80b7a3454c06bdac94a69ddc7a9",
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# AAVE V1
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"0x3dfd23a6c5e8bbcfc9581d2e864a68feb6a076d3",
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# AAVE V2 WETH
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"0x030ba81f1c18d280636f32af80b9aad02cf0854e",
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# AAVE AMM Market DAI
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"0x79be75ffc64dd58e66787e4eae470c8a1fd08ba4",
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# AAVE i
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"0x030ba81f1c18d280636f32af80b9aad02cf0854e",
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"0xbcca60bb61934080951369a648fb03df4f96263c",
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]
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def get_aave_liquidations(
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traces: List[ClassifiedTrace],
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) -> List[Liquidation]:
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"""Inspect list of classified traces and identify liquidation"""
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liquidations: List[Liquidation] = []
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parent_liquidations: List[List[int]] = []
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for trace in traces:
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if (
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trace.classification == Classification.liquidate
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and isinstance(trace, DecodedCallTrace)
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and not is_child_of_any_address(trace, parent_liquidations)
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and trace.protocol == Protocol.aave
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):
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parent_liquidations.append(trace.trace_address)
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liquidator = trace.from_address
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child_traces = get_child_traces(
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trace.transaction_hash, trace.trace_address, traces
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)
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(
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received_token_address,
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received_amount,
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) = _get_payback_token_and_amount(trace, child_traces, liquidator)
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liquidations.append(
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Liquidation(
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liquidated_user=trace.inputs["_user"],
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collateral_token_address=trace.inputs["_collateral"],
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debt_token_address=trace.inputs["_reserve"],
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liquidator_user=liquidator,
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debt_purchase_amount=trace.inputs["_purchaseAmount"],
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protocol=Protocol.aave,
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received_amount=received_amount,
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received_token_address=received_token_address,
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transaction_hash=trace.transaction_hash,
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trace_address=trace.trace_address,
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block_number=trace.block_number,
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)
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)
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return liquidations
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def _get_payback_token_and_amount(
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liquidation: DecodedCallTrace, child_traces: List[ClassifiedTrace], liquidator: str
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) -> Tuple[str, Optional[int]]:
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"""Look for and return liquidator payback from liquidation"""
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for child in child_traces:
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if isinstance(child, CallTrace):
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child_transfer: Optional[Transfer] = get_transfer(child)
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if child_transfer:
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if (
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child_transfer.to_address == liquidator
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and child.from_address in AAVE_CONTRACT_ADDRESSES
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):
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return child_transfer.token_address, child_transfer.amount
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elif (
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child_transfer.to_address == liquidator
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and child.from_address in AAVE_CONTRACT_ADDRESSES
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and child_transfer.token_address
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== "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee"
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):
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return child_transfer.token_address, child.value
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return liquidation.inputs["_collateral"], 0
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